| File: | root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp |
| Warning: | line 384, column 40 Dereference of null pointer |
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| 1 | /* | |||
| 2 | * Copyright 2006-2012 The Android Open Source Project | |||
| 3 | * Copyright 2012 Mozilla Foundation | |||
| 4 | * | |||
| 5 | * Use of this source code is governed by a BSD-style license that can be | |||
| 6 | * found in the LICENSE file. | |||
| 7 | */ | |||
| 8 | ||||
| 9 | #include "src/ports/SkFontHost_FreeType_common.h" | |||
| 10 | ||||
| 11 | #include "include/core/SkBitmap.h" | |||
| 12 | #include "include/core/SkCanvas.h" | |||
| 13 | #include "include/core/SkColor.h" | |||
| 14 | #include "include/core/SkDrawable.h" | |||
| 15 | #include "include/core/SkGraphics.h" | |||
| 16 | #include "include/core/SkImage.h" | |||
| 17 | #include "include/core/SkOpenTypeSVGDecoder.h" | |||
| 18 | #include "include/core/SkPath.h" | |||
| 19 | #include "include/core/SkPathBuilder.h" | |||
| 20 | #include "include/effects/SkGradient.h" | |||
| 21 | #include "include/private/base/SkTo.h" | |||
| 22 | #include "src/core/SkColorData.h" | |||
| 23 | #include "src/core/SkFDot6.h" | |||
| 24 | #include "src/core/SkSwizzlePriv.h" | |||
| 25 | #include "src/core/SkTHash.h" | |||
| 26 | ||||
| 27 | #include <algorithm> | |||
| 28 | #include <optional> | |||
| 29 | #include <utility> | |||
| 30 | #include <vector> | |||
| 31 | ||||
| 32 | #include <ft2build.h> | |||
| 33 | #include FT_FREETYPE_H<freetype/freetype.h> | |||
| 34 | #include FT_BITMAP_H<freetype/ftbitmap.h> | |||
| 35 | #ifdef FT_COLOR_H<freetype/ftcolor.h> | |||
| 36 | # include FT_COLOR_H<freetype/ftcolor.h> | |||
| 37 | #endif | |||
| 38 | #include FT_IMAGE_H<freetype/ftimage.h> | |||
| 39 | #include FT_OUTLINE_H<freetype/ftoutln.h> | |||
| 40 | #include FT_SIZES_H<freetype/ftsizes.h> | |||
| 41 | // In the past, FT_GlyphSlot_Own_Bitmap was defined in this header file. | |||
| 42 | #include FT_SYNTHESIS_H<freetype/ftsynth.h> | |||
| 43 | ||||
| 44 | using namespace skia_private; | |||
| 45 | ||||
| 46 | namespace { | |||
| 47 | [[maybe_unused]] static inline const constexpr bool kSkShowTextBlitCoverage = false; | |||
| 48 | } | |||
| 49 | ||||
| 50 | #if defined(FT_CONFIG_OPTION_SVG) | |||
| 51 | # include FT_OTSVG_H<freetype/otsvg.h> | |||
| 52 | #endif | |||
| 53 | ||||
| 54 | #ifdef TT_SUPPORT_COLRV1 | |||
| 55 | // FT_ClipBox and FT_Get_Color_Glyph_ClipBox introduced VER-2-11-0-18-g47cf8ebf4 | |||
| 56 | // FT_COLR_COMPOSITE_PLUS and renumbering introduced VER-2-11-0-21-ge40ae7569 | |||
| 57 | // FT_SIZEOF_LONG_LONG introduced VER-2-11-0-31-gffdac8d67 | |||
| 58 | // FT_PaintRadialGradient changed size and layout at VER-2-11-0-147-gd3d3ff76d | |||
| 59 | // FT_STATIC_CAST introduced VER-2-11-0-172-g9079c5d91 | |||
| 60 | // So undefine TT_SUPPORT_COLRV1 before 2.11.1 but not if FT_STATIC_CAST is defined. | |||
| 61 | #if (((FREETYPE_MAJOR2) < 2) || \ | |||
| 62 | ((FREETYPE_MAJOR2) == 2 && (FREETYPE_MINOR14) < 11) || \ | |||
| 63 | ((FREETYPE_MAJOR2) == 2 && (FREETYPE_MINOR14) == 11 && (FREETYPE_PATCH3) < 1)) && \ | |||
| 64 | !defined(FT_STATIC_CAST) | |||
| 65 | # undef TT_SUPPORT_COLRV1 | |||
| 66 | #else | |||
| 67 | # include "src/base/SkScopeExit.h" | |||
| 68 | #endif | |||
| 69 | #endif | |||
| 70 | ||||
| 71 | // FT_OUTLINE_OVERLAP was added in FreeType 2.10.3 | |||
| 72 | #ifndef FT_OUTLINE_OVERLAP0x40 | |||
| 73 | # define FT_OUTLINE_OVERLAP0x40 0x40 | |||
| 74 | #endif | |||
| 75 | ||||
| 76 | // FT_LOAD_COLOR and the corresponding FT_Pixel_Mode::FT_PIXEL_MODE_BGRA | |||
| 77 | // were introduced in FreeType 2.5.0. | |||
| 78 | // The following may be removed once FreeType 2.5.0 is required to build. | |||
| 79 | #ifndef FT_LOAD_COLOR( 1L << 20 ) | |||
| 80 | # define FT_LOAD_COLOR( 1L << 20 ) ( 1L << 20 ) | |||
| 81 | # define FT_PIXEL_MODE_BGRA 7 | |||
| 82 | #endif | |||
| 83 | ||||
| 84 | #ifndef FT_LOAD_BITMAP_METRICS_ONLY( 1L << 22 ) | |||
| 85 | # define FT_LOAD_BITMAP_METRICS_ONLY( 1L << 22 ) ( 1L << 22 ) | |||
| 86 | #endif | |||
| 87 | ||||
| 88 | #ifdef SK_DEBUG | |||
| 89 | const char* SkTraceFtrGetError(int e) { | |||
| 90 | switch ((FT_Error)e) { | |||
| 91 | #undef FTERRORS_H_ | |||
| 92 | #define FT_ERRORDEF( e, v, s ) case v: return s; | |||
| 93 | #define FT_ERROR_START_LIST | |||
| 94 | #define FT_ERROR_END_LIST | |||
| 95 | #include FT_ERRORS_H<freetype/fterrors.h> | |||
| 96 | #undef FT_ERRORDEF | |||
| 97 | #undef FT_ERROR_START_LIST | |||
| 98 | #undef FT_ERROR_END_LIST | |||
| 99 | default: return ""; | |||
| 100 | } | |||
| 101 | } | |||
| 102 | #endif // SK_DEBUG | |||
| 103 | ||||
| 104 | #ifdef TT_SUPPORT_COLRV1 | |||
| 105 | bool operator==(const FT_OpaquePaint& a, const FT_OpaquePaint& b) { | |||
| 106 | return a.p == b.p && a.insert_root_transform == b.insert_root_transform; | |||
| 107 | } | |||
| 108 | ||||
| 109 | // The stop_offset field is being upgraded to a larger representation in FreeType, and changed from | |||
| 110 | // 2.14 to 16.16. Adjust the shift factor depending on size type. | |||
| 111 | static_assert(sizeof(FT_Fixed) != sizeof(FT_F2Dot14)); | |||
| 112 | constexpr float kColorStopShift = | |||
| 113 | sizeof(FT_ColorStop::stop_offset) == sizeof(FT_F2Dot14) ? 1 << 14 : 1 << 16; | |||
| 114 | #endif | |||
| 115 | ||||
| 116 | namespace { | |||
| 117 | using SkUniqueFTSize = std::unique_ptr<FT_SizeRec, SkFunctionObject<FT_Done_Size>>; | |||
| 118 | ||||
| 119 | FT_Pixel_Mode compute_pixel_mode(SkMask::Format format) { | |||
| 120 | switch (format) { | |||
| 121 | case SkMask::kBW_Format: | |||
| 122 | return FT_PIXEL_MODE_MONO; | |||
| 123 | case SkMask::kA8_Format: | |||
| 124 | default: | |||
| 125 | return FT_PIXEL_MODE_GRAY; | |||
| 126 | } | |||
| 127 | } | |||
| 128 | ||||
| 129 | /////////////////////////////////////////////////////////////////////////////// | |||
| 130 | ||||
| 131 | uint16_t packTriple(U8CPU r, U8CPU g, U8CPU b) { | |||
| 132 | if constexpr (kSkShowTextBlitCoverage) { | |||
| 133 | r = std::max(r, (U8CPU)0x40); | |||
| 134 | g = std::max(g, (U8CPU)0x40); | |||
| 135 | b = std::max(b, (U8CPU)0x40); | |||
| 136 | } | |||
| 137 | return SkPack888ToRGB16(r, g, b); | |||
| 138 | } | |||
| 139 | ||||
| 140 | uint16_t grayToRGB16(U8CPU gray) { | |||
| 141 | if constexpr (kSkShowTextBlitCoverage) { | |||
| 142 | gray = std::max(gray, (U8CPU)0x40); | |||
| 143 | } | |||
| 144 | return SkPack888ToRGB16(gray, gray, gray); | |||
| 145 | } | |||
| 146 | ||||
| 147 | int bittst(const uint8_t data[], int bitOffset) { | |||
| 148 | SkASSERT(bitOffset >= 0)static_cast<void>( __builtin_expect(static_cast<bool >(bitOffset >= 0), 1) ? static_cast<void>(0) : [] { do { if (sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 148, "bitOffset >= 0"); ; sk_abort_no_print(); } while ( false); } } while(false); }() ); | |||
| 149 | int lowBit = data[bitOffset >> 3] >> (~bitOffset & 7); | |||
| 150 | return lowBit & 1; | |||
| 151 | } | |||
| 152 | ||||
| 153 | /** | |||
| 154 | * Copies a FT_Bitmap into an SkMask with the same dimensions. | |||
| 155 | * | |||
| 156 | * FT_PIXEL_MODE_MONO | |||
| 157 | * FT_PIXEL_MODE_GRAY | |||
| 158 | * FT_PIXEL_MODE_LCD | |||
| 159 | * FT_PIXEL_MODE_LCD_V | |||
| 160 | */ | |||
| 161 | template<bool APPLY_PREBLEND> | |||
| 162 | void copyFT2LCD16(const FT_Bitmap& bitmap, SkMaskBuilder* dstMask, int lcdIsBGR, | |||
| 163 | const uint8_t* tableR, const uint8_t* tableG, const uint8_t* tableB) | |||
| 164 | { | |||
| 165 | SkASSERT(SkMask::kLCD16_Format == dstMask->fFormat)static_cast<void>( __builtin_expect(static_cast<bool >(SkMask::kLCD16_Format == dstMask->fFormat), 1) ? static_cast <void>(0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf ("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 165, "SkMask::kLCD16_Format == dstMask->fFormat"); ; sk_abort_no_print (); } while (false); } } while(false); }() ); | |||
| 166 | if (FT_PIXEL_MODE_LCD != bitmap.pixel_mode) { | |||
| 167 | SkASSERT(dstMask->fBounds.width() == static_cast<int>(bitmap.width))static_cast<void>( __builtin_expect(static_cast<bool >(dstMask->fBounds.width() == static_cast<int>(bitmap .width)), 1) ? static_cast<void>(0) : []{ do { if (sk_abort_is_enabled ()) { do { SkDebugf("%s:%d" ": fatal error: \"" "check(%s)" "\"\n" , "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 167, "dstMask->fBounds.width() == static_cast<int>(bitmap.width)" ); ; sk_abort_no_print(); } while (false); } } while(false); } () ); | |||
| 168 | } | |||
| 169 | if (FT_PIXEL_MODE_LCD_V != bitmap.pixel_mode) { | |||
| 170 | SkASSERT(dstMask->fBounds.height() == static_cast<int>(bitmap.rows))static_cast<void>( __builtin_expect(static_cast<bool >(dstMask->fBounds.height() == static_cast<int>(bitmap .rows)), 1) ? static_cast<void>(0) : []{ do { if (sk_abort_is_enabled ()) { do { SkDebugf("%s:%d" ": fatal error: \"" "check(%s)" "\"\n" , "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 170, "dstMask->fBounds.height() == static_cast<int>(bitmap.rows)" ); ; sk_abort_no_print(); } while (false); } } while(false); } () ); | |||
| 171 | } | |||
| 172 | ||||
| 173 | const uint8_t* src = bitmap.buffer; | |||
| 174 | uint16_t* dst = reinterpret_cast<uint16_t*>(dstMask->image()); | |||
| 175 | const size_t dstRB = dstMask->fRowBytes; | |||
| 176 | ||||
| 177 | const int width = dstMask->fBounds.width(); | |||
| 178 | const int height = dstMask->fBounds.height(); | |||
| 179 | ||||
| 180 | switch (bitmap.pixel_mode) { | |||
| 181 | case FT_PIXEL_MODE_MONO: | |||
| 182 | for (int y = height; y --> 0;) { | |||
| 183 | for (int x = 0; x < width; ++x) { | |||
| 184 | dst[x] = -bittst(src, x); | |||
| 185 | } | |||
| 186 | dst = (uint16_t*)((char*)dst + dstRB); | |||
| 187 | src += bitmap.pitch; | |||
| 188 | } | |||
| 189 | break; | |||
| 190 | case FT_PIXEL_MODE_GRAY: | |||
| 191 | for (int y = height; y --> 0;) { | |||
| 192 | for (int x = 0; x < width; ++x) { | |||
| 193 | dst[x] = grayToRGB16(src[x]); | |||
| 194 | } | |||
| 195 | dst = (uint16_t*)((char*)dst + dstRB); | |||
| 196 | src += bitmap.pitch; | |||
| 197 | } | |||
| 198 | break; | |||
| 199 | case FT_PIXEL_MODE_LCD: | |||
| 200 | SkASSERT(3 * dstMask->fBounds.width() == static_cast<int>(bitmap.width))static_cast<void>( __builtin_expect(static_cast<bool >(3 * dstMask->fBounds.width() == static_cast<int> (bitmap.width)), 1) ? static_cast<void>(0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 200, "3 * dstMask->fBounds.width() == static_cast<int>(bitmap.width)" ); ; sk_abort_no_print(); } while (false); } } while(false); } () ); | |||
| 201 | for (int y = height; y --> 0;) { | |||
| 202 | const uint8_t* triple = src; | |||
| 203 | if (lcdIsBGR) { | |||
| 204 | for (int x = 0; x < width; x++) { | |||
| 205 | dst[x] = packTriple(sk_apply_lut_if<APPLY_PREBLEND>(triple[2], tableR), | |||
| 206 | sk_apply_lut_if<APPLY_PREBLEND>(triple[1], tableG), | |||
| 207 | sk_apply_lut_if<APPLY_PREBLEND>(triple[0], tableB)); | |||
| 208 | triple += 3; | |||
| 209 | } | |||
| 210 | } else { | |||
| 211 | for (int x = 0; x < width; x++) { | |||
| 212 | dst[x] = packTriple(sk_apply_lut_if<APPLY_PREBLEND>(triple[0], tableR), | |||
| 213 | sk_apply_lut_if<APPLY_PREBLEND>(triple[1], tableG), | |||
| 214 | sk_apply_lut_if<APPLY_PREBLEND>(triple[2], tableB)); | |||
| 215 | triple += 3; | |||
| 216 | } | |||
| 217 | } | |||
| 218 | src += bitmap.pitch; | |||
| 219 | dst = (uint16_t*)((char*)dst + dstRB); | |||
| 220 | } | |||
| 221 | break; | |||
| 222 | case FT_PIXEL_MODE_LCD_V: | |||
| 223 | SkASSERT(3 * dstMask->fBounds.height() == static_cast<int>(bitmap.rows))static_cast<void>( __builtin_expect(static_cast<bool >(3 * dstMask->fBounds.height() == static_cast<int> (bitmap.rows)), 1) ? static_cast<void>(0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 223, "3 * dstMask->fBounds.height() == static_cast<int>(bitmap.rows)" ); ; sk_abort_no_print(); } while (false); } } while(false); } () ); | |||
| 224 | for (int y = height; y --> 0;) { | |||
| 225 | const uint8_t* srcR = src; | |||
| 226 | const uint8_t* srcG = srcR + bitmap.pitch; | |||
| 227 | const uint8_t* srcB = srcG + bitmap.pitch; | |||
| 228 | if (lcdIsBGR) { | |||
| 229 | using std::swap; | |||
| 230 | swap(srcR, srcB); | |||
| 231 | } | |||
| 232 | for (int x = 0; x < width; x++) { | |||
| 233 | dst[x] = packTriple(sk_apply_lut_if<APPLY_PREBLEND>(*srcR++, tableR), | |||
| 234 | sk_apply_lut_if<APPLY_PREBLEND>(*srcG++, tableG), | |||
| 235 | sk_apply_lut_if<APPLY_PREBLEND>(*srcB++, tableB)); | |||
| 236 | } | |||
| 237 | src += 3 * bitmap.pitch; | |||
| 238 | dst = (uint16_t*)((char*)dst + dstRB); | |||
| 239 | } | |||
| 240 | break; | |||
| 241 | default: | |||
| 242 | SkDEBUGF("FT_Pixel_Mode %d", bitmap.pixel_mode)SkDebugf("FT_Pixel_Mode %d", bitmap.pixel_mode); | |||
| 243 | SkDEBUGFAIL("unsupported FT_Pixel_Mode for LCD16")do { if (sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "%s" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 243, "unsupported FT_Pixel_Mode for LCD16"); ; sk_abort_no_print (); } while (false); } } while(false); | |||
| 244 | break; | |||
| 245 | } | |||
| 246 | } | |||
| 247 | ||||
| 248 | /** | |||
| 249 | * Copies a FT_Bitmap into an SkMask with the same dimensions. | |||
| 250 | * | |||
| 251 | * Yes, No, Never Requested, Never Produced | |||
| 252 | * | |||
| 253 | * kBW kA8 k3D kARGB32 kLCD16 | |||
| 254 | * FT_PIXEL_MODE_MONO Y Y NR N Y | |||
| 255 | * FT_PIXEL_MODE_GRAY N Y NR N Y | |||
| 256 | * FT_PIXEL_MODE_GRAY2 NP NP NR NP NP | |||
| 257 | * FT_PIXEL_MODE_GRAY4 NP NP NR NP NP | |||
| 258 | * FT_PIXEL_MODE_LCD NP NP NR NP NP | |||
| 259 | * FT_PIXEL_MODE_LCD_V NP NP NR NP NP | |||
| 260 | * FT_PIXEL_MODE_BGRA N N NR Y N | |||
| 261 | * | |||
| 262 | * TODO: All of these N need to be Y or otherwise ruled out. | |||
| 263 | */ | |||
| 264 | void copyFTBitmap(const FT_Bitmap& srcFTBitmap, SkMaskBuilder* dstMask) { | |||
| 265 | SkASSERTF(dstMask->fBounds.width() == static_cast<int>(srcFTBitmap.width),static_cast<void>( __builtin_expect(static_cast<bool >(dstMask->fBounds.width() == static_cast<int>(srcFTBitmap .width)), 1) ? static_cast<void>(0) : [&]{ do { if ( sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "assertf(%s): " "dstMask.fBounds.width() = %d\n" "static_cast<int>(srcFTBitmap.width) = %d" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 270, "dstMask->fBounds.width() == static_cast<int>(srcFTBitmap.width)" , dstMask->fBounds.width(), static_cast<int>(srcFTBitmap .width)); ; sk_abort_no_print(); } while (false); } } while(false ); }() ) | |||
| 266 | "dstMask.fBounds.width() = %d\n"static_cast<void>( __builtin_expect(static_cast<bool >(dstMask->fBounds.width() == static_cast<int>(srcFTBitmap .width)), 1) ? static_cast<void>(0) : [&]{ do { if ( sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "assertf(%s): " "dstMask.fBounds.width() = %d\n" "static_cast<int>(srcFTBitmap.width) = %d" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 270, "dstMask->fBounds.width() == static_cast<int>(srcFTBitmap.width)" , dstMask->fBounds.width(), static_cast<int>(srcFTBitmap .width)); ; sk_abort_no_print(); } while (false); } } while(false ); }() ) | |||
| 267 | "static_cast<int>(srcFTBitmap.width) = %d",static_cast<void>( __builtin_expect(static_cast<bool >(dstMask->fBounds.width() == static_cast<int>(srcFTBitmap .width)), 1) ? static_cast<void>(0) : [&]{ do { if ( sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "assertf(%s): " "dstMask.fBounds.width() = %d\n" "static_cast<int>(srcFTBitmap.width) = %d" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 270, "dstMask->fBounds.width() == static_cast<int>(srcFTBitmap.width)" , dstMask->fBounds.width(), static_cast<int>(srcFTBitmap .width)); ; sk_abort_no_print(); } while (false); } } while(false ); }() ) | |||
| 268 | dstMask->fBounds.width(),static_cast<void>( __builtin_expect(static_cast<bool >(dstMask->fBounds.width() == static_cast<int>(srcFTBitmap .width)), 1) ? static_cast<void>(0) : [&]{ do { if ( sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "assertf(%s): " "dstMask.fBounds.width() = %d\n" "static_cast<int>(srcFTBitmap.width) = %d" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 270, "dstMask->fBounds.width() == static_cast<int>(srcFTBitmap.width)" , dstMask->fBounds.width(), static_cast<int>(srcFTBitmap .width)); ; sk_abort_no_print(); } while (false); } } while(false ); }() ) | |||
| 269 | static_cast<int>(srcFTBitmap.width)static_cast<void>( __builtin_expect(static_cast<bool >(dstMask->fBounds.width() == static_cast<int>(srcFTBitmap .width)), 1) ? static_cast<void>(0) : [&]{ do { if ( sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "assertf(%s): " "dstMask.fBounds.width() = %d\n" "static_cast<int>(srcFTBitmap.width) = %d" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 270, "dstMask->fBounds.width() == static_cast<int>(srcFTBitmap.width)" , dstMask->fBounds.width(), static_cast<int>(srcFTBitmap .width)); ; sk_abort_no_print(); } while (false); } } while(false ); }() ) | |||
| 270 | )static_cast<void>( __builtin_expect(static_cast<bool >(dstMask->fBounds.width() == static_cast<int>(srcFTBitmap .width)), 1) ? static_cast<void>(0) : [&]{ do { if ( sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "assertf(%s): " "dstMask.fBounds.width() = %d\n" "static_cast<int>(srcFTBitmap.width) = %d" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 270, "dstMask->fBounds.width() == static_cast<int>(srcFTBitmap.width)" , dstMask->fBounds.width(), static_cast<int>(srcFTBitmap .width)); ; sk_abort_no_print(); } while (false); } } while(false ); }() ); | |||
| 271 | SkASSERTF(dstMask->fBounds.height() == static_cast<int>(srcFTBitmap.rows),static_cast<void>( __builtin_expect(static_cast<bool >(dstMask->fBounds.height() == static_cast<int>(srcFTBitmap .rows)), 1) ? static_cast<void>(0) : [&]{ do { if ( sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "assertf(%s): " "dstMask.fBounds.height() = %d\n" "static_cast<int>(srcFTBitmap.rows) = %d" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 276, "dstMask->fBounds.height() == static_cast<int>(srcFTBitmap.rows)" , dstMask->fBounds.height(), static_cast<int>(srcFTBitmap .rows)); ; sk_abort_no_print(); } while (false); } } while(false ); }() ) | |||
| 272 | "dstMask.fBounds.height() = %d\n"static_cast<void>( __builtin_expect(static_cast<bool >(dstMask->fBounds.height() == static_cast<int>(srcFTBitmap .rows)), 1) ? static_cast<void>(0) : [&]{ do { if ( sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "assertf(%s): " "dstMask.fBounds.height() = %d\n" "static_cast<int>(srcFTBitmap.rows) = %d" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 276, "dstMask->fBounds.height() == static_cast<int>(srcFTBitmap.rows)" , dstMask->fBounds.height(), static_cast<int>(srcFTBitmap .rows)); ; sk_abort_no_print(); } while (false); } } while(false ); }() ) | |||
| 273 | "static_cast<int>(srcFTBitmap.rows) = %d",static_cast<void>( __builtin_expect(static_cast<bool >(dstMask->fBounds.height() == static_cast<int>(srcFTBitmap .rows)), 1) ? static_cast<void>(0) : [&]{ do { if ( sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "assertf(%s): " "dstMask.fBounds.height() = %d\n" "static_cast<int>(srcFTBitmap.rows) = %d" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 276, "dstMask->fBounds.height() == static_cast<int>(srcFTBitmap.rows)" , dstMask->fBounds.height(), static_cast<int>(srcFTBitmap .rows)); ; sk_abort_no_print(); } while (false); } } while(false ); }() ) | |||
| 274 | dstMask->fBounds.height(),static_cast<void>( __builtin_expect(static_cast<bool >(dstMask->fBounds.height() == static_cast<int>(srcFTBitmap .rows)), 1) ? static_cast<void>(0) : [&]{ do { if ( sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "assertf(%s): " "dstMask.fBounds.height() = %d\n" "static_cast<int>(srcFTBitmap.rows) = %d" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 276, "dstMask->fBounds.height() == static_cast<int>(srcFTBitmap.rows)" , dstMask->fBounds.height(), static_cast<int>(srcFTBitmap .rows)); ; sk_abort_no_print(); } while (false); } } while(false ); }() ) | |||
| 275 | static_cast<int>(srcFTBitmap.rows)static_cast<void>( __builtin_expect(static_cast<bool >(dstMask->fBounds.height() == static_cast<int>(srcFTBitmap .rows)), 1) ? static_cast<void>(0) : [&]{ do { if ( sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "assertf(%s): " "dstMask.fBounds.height() = %d\n" "static_cast<int>(srcFTBitmap.rows) = %d" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 276, "dstMask->fBounds.height() == static_cast<int>(srcFTBitmap.rows)" , dstMask->fBounds.height(), static_cast<int>(srcFTBitmap .rows)); ; sk_abort_no_print(); } while (false); } } while(false ); }() ) | |||
| 276 | )static_cast<void>( __builtin_expect(static_cast<bool >(dstMask->fBounds.height() == static_cast<int>(srcFTBitmap .rows)), 1) ? static_cast<void>(0) : [&]{ do { if ( sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "assertf(%s): " "dstMask.fBounds.height() = %d\n" "static_cast<int>(srcFTBitmap.rows) = %d" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 276, "dstMask->fBounds.height() == static_cast<int>(srcFTBitmap.rows)" , dstMask->fBounds.height(), static_cast<int>(srcFTBitmap .rows)); ; sk_abort_no_print(); } while (false); } } while(false ); }() ); | |||
| 277 | ||||
| 278 | const uint8_t* src = reinterpret_cast<const uint8_t*>(srcFTBitmap.buffer); | |||
| 279 | const FT_Pixel_Mode srcFormat = static_cast<FT_Pixel_Mode>(srcFTBitmap.pixel_mode); | |||
| 280 | // FT_Bitmap::pitch is an int and allowed to be negative. | |||
| 281 | const int srcPitch = srcFTBitmap.pitch; | |||
| 282 | const size_t srcRowBytes = SkTAbs(srcPitch); | |||
| 283 | ||||
| 284 | uint8_t* dst = dstMask->image(); | |||
| 285 | const SkMask::Format dstFormat = dstMask->fFormat; | |||
| 286 | const size_t dstRowBytes = dstMask->fRowBytes; | |||
| 287 | ||||
| 288 | const size_t width = srcFTBitmap.width; | |||
| 289 | const size_t height = srcFTBitmap.rows; | |||
| 290 | ||||
| 291 | if (SkMask::kLCD16_Format == dstFormat) { | |||
| 292 | copyFT2LCD16<false>(srcFTBitmap, dstMask, false, nullptr, nullptr, nullptr); | |||
| 293 | return; | |||
| 294 | } | |||
| 295 | ||||
| 296 | if ((FT_PIXEL_MODE_MONO == srcFormat && SkMask::kBW_Format == dstFormat) || | |||
| 297 | (FT_PIXEL_MODE_GRAY == srcFormat && SkMask::kA8_Format == dstFormat)) | |||
| 298 | { | |||
| 299 | size_t commonRowBytes = std::min(srcRowBytes, dstRowBytes); | |||
| 300 | for (size_t y = height; y --> 0;) { | |||
| 301 | memcpy(dst, src, commonRowBytes); | |||
| 302 | src += srcPitch; | |||
| 303 | dst += dstRowBytes; | |||
| 304 | } | |||
| 305 | } else if (FT_PIXEL_MODE_MONO == srcFormat && SkMask::kA8_Format == dstFormat) { | |||
| 306 | for (size_t y = height; y --> 0;) { | |||
| 307 | uint8_t byte = 0; | |||
| 308 | int bits = 0; | |||
| 309 | const uint8_t* src_row = src; | |||
| 310 | uint8_t* dst_row = dst; | |||
| 311 | for (size_t x = width; x --> 0;) { | |||
| 312 | if (0 == bits) { | |||
| 313 | byte = *src_row++; | |||
| 314 | bits = 8; | |||
| 315 | } | |||
| 316 | *dst_row++ = byte & 0x80 ? 0xff : 0x00; | |||
| 317 | bits--; | |||
| 318 | byte <<= 1; | |||
| 319 | } | |||
| 320 | src += srcPitch; | |||
| 321 | dst += dstRowBytes; | |||
| 322 | } | |||
| 323 | } else if (FT_PIXEL_MODE_BGRA == srcFormat && SkMask::kARGB32_Format == dstFormat) { | |||
| 324 | // FT_PIXEL_MODE_BGRA is pre-multiplied. | |||
| 325 | for (size_t y = height; y --> 0;) { | |||
| 326 | const uint8_t* src_row = src; | |||
| 327 | SkPMColor* dst_row = reinterpret_cast<SkPMColor*>(dst); | |||
| 328 | for (size_t x = 0; x < width; ++x) { | |||
| 329 | uint8_t b = *src_row++; | |||
| 330 | uint8_t g = *src_row++; | |||
| 331 | uint8_t r = *src_row++; | |||
| 332 | uint8_t a = *src_row++; | |||
| 333 | *dst_row++ = SkPackARGB32(a, r, g, b); | |||
| 334 | if constexpr (kSkShowTextBlitCoverage) { | |||
| 335 | *(dst_row-1) = SkFourByteInterp256(*(dst_row-1), SK_ColorWHITE, 0x40); | |||
| 336 | } | |||
| 337 | } | |||
| 338 | src += srcPitch; | |||
| 339 | dst += dstRowBytes; | |||
| 340 | } | |||
| 341 | } else { | |||
| 342 | SkDEBUGF("FT_Pixel_Mode %d, SkMask::Format %d\n", srcFormat, dstFormat)SkDebugf("FT_Pixel_Mode %d, SkMask::Format %d\n", srcFormat, dstFormat ); | |||
| 343 | SkDEBUGFAIL("unsupported combination of FT_Pixel_Mode and SkMask::Format")do { if (sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "%s" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 343, "unsupported combination of FT_Pixel_Mode and SkMask::Format" ); ; sk_abort_no_print(); } while (false); } } while(false); | |||
| 344 | } | |||
| 345 | } | |||
| 346 | ||||
| 347 | inline int convert_8_to_1(unsigned byte) { | |||
| 348 | SkASSERT(byte <= 0xFF)static_cast<void>( __builtin_expect(static_cast<bool >(byte <= 0xFF), 1) ? static_cast<void>(0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 348, "byte <= 0xFF"); ; sk_abort_no_print(); } while (false ); } } while(false); }() ); | |||
| 349 | // Arbitrary decision that making the cutoff at 1/4 instead of 1/2 in general looks better. | |||
| 350 | return (byte >> 6) != 0; | |||
| 351 | } | |||
| 352 | ||||
| 353 | uint8_t pack_8_to_1(const uint8_t alpha[8]) { | |||
| 354 | unsigned bits = 0; | |||
| 355 | for (int i = 0; i < 8; ++i) { | |||
| 356 | bits <<= 1; | |||
| 357 | bits |= convert_8_to_1(alpha[i]); | |||
| 358 | } | |||
| 359 | return SkToU8(bits); | |||
| 360 | } | |||
| 361 | ||||
| 362 | void packA8ToA1(SkMaskBuilder* dstMask, const uint8_t* src, size_t srcRB) { | |||
| 363 | const int height = dstMask->fBounds.height(); | |||
| 364 | const int width = dstMask->fBounds.width(); | |||
| 365 | const int octs = width >> 3; | |||
| 366 | const int leftOverBits = width & 7; | |||
| 367 | ||||
| 368 | uint8_t* dst = dstMask->image(); | |||
| 369 | const int dstPad = dstMask->fRowBytes - SkAlign8(width)/8; | |||
| 370 | SkASSERT(dstPad >= 0)static_cast<void>( __builtin_expect(static_cast<bool >(dstPad >= 0), 1) ? static_cast<void>(0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 370, "dstPad >= 0"); ; sk_abort_no_print(); } while (false ); } } while(false); }() ); | |||
| 371 | ||||
| 372 | const int srcPad = srcRB - width; | |||
| 373 | SkASSERT(srcPad >= 0)static_cast<void>( __builtin_expect(static_cast<bool >(srcPad >= 0), 1) ? static_cast<void>(0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 373, "srcPad >= 0"); ; sk_abort_no_print(); } while (false ); } } while(false); }() ); | |||
| 374 | ||||
| 375 | for (int y = 0; y < height; ++y) { | |||
| 376 | for (int i = 0; i < octs; ++i) { | |||
| 377 | *dst++ = pack_8_to_1(src); | |||
| 378 | src += 8; | |||
| 379 | } | |||
| 380 | if (leftOverBits > 0) { | |||
| 381 | unsigned bits = 0; | |||
| 382 | int shift = 7; | |||
| 383 | for (int i = 0; i
| |||
| 384 | bits |= convert_8_to_1(*src++) << shift; | |||
| ||||
| 385 | } | |||
| 386 | *dst++ = bits; | |||
| 387 | } | |||
| 388 | src += srcPad; | |||
| 389 | dst += dstPad; | |||
| 390 | } | |||
| 391 | } | |||
| 392 | ||||
| 393 | inline SkMask::Format SkMaskFormat_for_SkColorType(SkColorType colorType) { | |||
| 394 | switch (colorType) { | |||
| 395 | case kAlpha_8_SkColorType: | |||
| 396 | return SkMask::kA8_Format; | |||
| 397 | case kN32_SkColorType: | |||
| 398 | return SkMask::kARGB32_Format; | |||
| 399 | default: | |||
| 400 | SkDEBUGFAIL("unsupported SkBitmap::Config")do { if (sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "%s" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 400, "unsupported SkBitmap::Config"); ; sk_abort_no_print() ; } while (false); } } while(false); | |||
| 401 | return SkMask::kA8_Format; | |||
| 402 | } | |||
| 403 | } | |||
| 404 | ||||
| 405 | inline SkColorType SkColorType_for_FTPixelMode(FT_Pixel_Mode pixel_mode) { | |||
| 406 | switch (pixel_mode) { | |||
| 407 | case FT_PIXEL_MODE_MONO: | |||
| 408 | case FT_PIXEL_MODE_GRAY: | |||
| 409 | return kAlpha_8_SkColorType; | |||
| 410 | case FT_PIXEL_MODE_BGRA: | |||
| 411 | return kN32_SkColorType; | |||
| 412 | default: | |||
| 413 | SkDEBUGFAIL("unsupported FT_PIXEL_MODE")do { if (sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "%s" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 413, "unsupported FT_PIXEL_MODE"); ; sk_abort_no_print(); } while (false); } } while(false); | |||
| 414 | return kAlpha_8_SkColorType; | |||
| 415 | } | |||
| 416 | } | |||
| 417 | ||||
| 418 | inline SkColorType SkColorType_for_SkMaskFormat(SkMask::Format format) { | |||
| 419 | switch (format) { | |||
| 420 | case SkMask::kBW_Format: | |||
| 421 | case SkMask::kA8_Format: | |||
| 422 | case SkMask::kLCD16_Format: | |||
| 423 | return kAlpha_8_SkColorType; | |||
| 424 | case SkMask::kARGB32_Format: | |||
| 425 | return kN32_SkColorType; | |||
| 426 | default: | |||
| 427 | SkDEBUGFAIL("unsupported destination SkBitmap::Config")do { if (sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "%s" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 427, "unsupported destination SkBitmap::Config"); ; sk_abort_no_print (); } while (false); } } while(false); | |||
| 428 | return kAlpha_8_SkColorType; | |||
| 429 | } | |||
| 430 | } | |||
| 431 | ||||
| 432 | // Only build COLRv1 rendering code if FreeType is new enough to have COLRv1 | |||
| 433 | // additions. FreeType defines a macro in the ftoption header to tell us whether | |||
| 434 | // it does support these features. | |||
| 435 | #ifdef TT_SUPPORT_COLRV1 | |||
| 436 | ||||
| 437 | const uint16_t kForegroundColorPaletteIndex = 0xFFFF; | |||
| 438 | ||||
| 439 | // This linear interpolation is used for calculating a truncated color line in special edge cases. | |||
| 440 | // This interpolation needs to be kept in sync with what the gradient shader would normally do when | |||
| 441 | // truncating and drawing color lines. When drawing into N32 surfaces, this is expected to be true. | |||
| 442 | // If that changes, or if we support other color spaces in CPAL tables at some point, this needs to | |||
| 443 | // be looked at. | |||
| 444 | SkColor4f lerpSkColor(SkColor4f c0, SkColor4f c1, float t) { | |||
| 445 | // Due to the floating point calculation in the caller, when interpolating between very narrow | |||
| 446 | // stops, we may get values outside the interpolation range, guard against these. | |||
| 447 | if (t < 0) { | |||
| 448 | return c0; | |||
| 449 | } | |||
| 450 | if (t > 1) { | |||
| 451 | return c1; | |||
| 452 | } | |||
| 453 | ||||
| 454 | const auto c0_4f = skvx::float4::Load(c0.vec()); | |||
| 455 | const auto c1_4f = skvx::float4::Load(c1.vec()); | |||
| 456 | const auto c_4f = c0_4f + (c1_4f - c0_4f) * t; | |||
| 457 | ||||
| 458 | SkColor4f l; | |||
| 459 | c_4f.store(l.vec()); | |||
| 460 | return l; | |||
| 461 | } | |||
| 462 | ||||
| 463 | enum TruncateStops { | |||
| 464 | TruncateStart, | |||
| 465 | TruncateEnd | |||
| 466 | }; | |||
| 467 | ||||
| 468 | // Truncate a vector of color stops at a previously computed stop position and insert at that | |||
| 469 | // position the color interpolated between the surrounding stops. | |||
| 470 | void truncateToStopInterpolating(SkScalar zeroRadiusStop, | |||
| 471 | std::vector<SkColor4f>& colors, | |||
| 472 | std::vector<SkScalar>& stops, | |||
| 473 | TruncateStops truncateStops) { | |||
| 474 | if (stops.size() <= 1u || | |||
| 475 | zeroRadiusStop < stops.front() || stops.back() < zeroRadiusStop) | |||
| 476 | { | |||
| 477 | return; | |||
| 478 | } | |||
| 479 | ||||
| 480 | size_t afterIndex = (truncateStops == TruncateStart) | |||
| 481 | ? std::lower_bound(stops.begin(), stops.end(), zeroRadiusStop) - stops.begin() | |||
| 482 | : std::upper_bound(stops.begin(), stops.end(), zeroRadiusStop) - stops.begin(); | |||
| 483 | ||||
| 484 | const float t = (zeroRadiusStop - stops[afterIndex - 1]) / | |||
| 485 | (stops[afterIndex] - stops[afterIndex - 1]); | |||
| 486 | SkColor4f lerpColor = lerpSkColor(colors[afterIndex - 1], colors[afterIndex], t); | |||
| 487 | ||||
| 488 | if (truncateStops == TruncateStart) { | |||
| 489 | stops.erase(stops.begin(), stops.begin() + afterIndex); | |||
| 490 | colors.erase(colors.begin(), colors.begin() + afterIndex); | |||
| 491 | stops.insert(stops.begin(), 0); | |||
| 492 | colors.insert(colors.begin(), lerpColor); | |||
| 493 | } else { | |||
| 494 | stops.erase(stops.begin() + afterIndex, stops.end()); | |||
| 495 | colors.erase(colors.begin() + afterIndex, colors.end()); | |||
| 496 | stops.insert(stops.end(), 1); | |||
| 497 | colors.insert(colors.end(), lerpColor); | |||
| 498 | } | |||
| 499 | } | |||
| 500 | ||||
| 501 | struct OpaquePaintHasher { | |||
| 502 | size_t operator()(const FT_OpaquePaint& opaquePaint) { | |||
| 503 | return SkGoodHash()(opaquePaint.p) ^ | |||
| 504 | SkGoodHash()(opaquePaint.insert_root_transform); | |||
| 505 | } | |||
| 506 | }; | |||
| 507 | ||||
| 508 | using VisitedSet = THashSet<FT_OpaquePaint, OpaquePaintHasher>; | |||
| 509 | ||||
| 510 | std::optional<SkPath> generateFacePathCOLRv1(FT_Face face, SkGlyphID glyphID, | |||
| 511 | const SkMatrix* = nullptr); | |||
| 512 | ||||
| 513 | inline float SkColrV1AlphaToFloat(uint16_t alpha) { return (alpha / float(1 << 14)); } | |||
| 514 | ||||
| 515 | ||||
| 516 | inline SkTileMode ToSkTileMode(FT_PaintExtend extendMode) { | |||
| 517 | switch (extendMode) { | |||
| 518 | case FT_COLR_PAINT_EXTEND_REPEAT: | |||
| 519 | return SkTileMode::kRepeat; | |||
| 520 | case FT_COLR_PAINT_EXTEND_REFLECT: | |||
| 521 | return SkTileMode::kMirror; | |||
| 522 | default: | |||
| 523 | return SkTileMode::kClamp; | |||
| 524 | } | |||
| 525 | } | |||
| 526 | ||||
| 527 | inline SkBlendMode ToSkBlendMode(FT_Composite_Mode compositeMode) { | |||
| 528 | switch (compositeMode) { | |||
| 529 | case FT_COLR_COMPOSITE_CLEAR: | |||
| 530 | return SkBlendMode::kClear; | |||
| 531 | case FT_COLR_COMPOSITE_SRC: | |||
| 532 | return SkBlendMode::kSrc; | |||
| 533 | case FT_COLR_COMPOSITE_DEST: | |||
| 534 | return SkBlendMode::kDst; | |||
| 535 | case FT_COLR_COMPOSITE_SRC_OVER: | |||
| 536 | return SkBlendMode::kSrcOver; | |||
| 537 | case FT_COLR_COMPOSITE_DEST_OVER: | |||
| 538 | return SkBlendMode::kDstOver; | |||
| 539 | case FT_COLR_COMPOSITE_SRC_IN: | |||
| 540 | return SkBlendMode::kSrcIn; | |||
| 541 | case FT_COLR_COMPOSITE_DEST_IN: | |||
| 542 | return SkBlendMode::kDstIn; | |||
| 543 | case FT_COLR_COMPOSITE_SRC_OUT: | |||
| 544 | return SkBlendMode::kSrcOut; | |||
| 545 | case FT_COLR_COMPOSITE_DEST_OUT: | |||
| 546 | return SkBlendMode::kDstOut; | |||
| 547 | case FT_COLR_COMPOSITE_SRC_ATOP: | |||
| 548 | return SkBlendMode::kSrcATop; | |||
| 549 | case FT_COLR_COMPOSITE_DEST_ATOP: | |||
| 550 | return SkBlendMode::kDstATop; | |||
| 551 | case FT_COLR_COMPOSITE_XOR: | |||
| 552 | return SkBlendMode::kXor; | |||
| 553 | case FT_COLR_COMPOSITE_PLUS: | |||
| 554 | return SkBlendMode::kPlus; | |||
| 555 | case FT_COLR_COMPOSITE_SCREEN: | |||
| 556 | return SkBlendMode::kScreen; | |||
| 557 | case FT_COLR_COMPOSITE_OVERLAY: | |||
| 558 | return SkBlendMode::kOverlay; | |||
| 559 | case FT_COLR_COMPOSITE_DARKEN: | |||
| 560 | return SkBlendMode::kDarken; | |||
| 561 | case FT_COLR_COMPOSITE_LIGHTEN: | |||
| 562 | return SkBlendMode::kLighten; | |||
| 563 | case FT_COLR_COMPOSITE_COLOR_DODGE: | |||
| 564 | return SkBlendMode::kColorDodge; | |||
| 565 | case FT_COLR_COMPOSITE_COLOR_BURN: | |||
| 566 | return SkBlendMode::kColorBurn; | |||
| 567 | case FT_COLR_COMPOSITE_HARD_LIGHT: | |||
| 568 | return SkBlendMode::kHardLight; | |||
| 569 | case FT_COLR_COMPOSITE_SOFT_LIGHT: | |||
| 570 | return SkBlendMode::kSoftLight; | |||
| 571 | case FT_COLR_COMPOSITE_DIFFERENCE: | |||
| 572 | return SkBlendMode::kDifference; | |||
| 573 | case FT_COLR_COMPOSITE_EXCLUSION: | |||
| 574 | return SkBlendMode::kExclusion; | |||
| 575 | case FT_COLR_COMPOSITE_MULTIPLY: | |||
| 576 | return SkBlendMode::kMultiply; | |||
| 577 | case FT_COLR_COMPOSITE_HSL_HUE: | |||
| 578 | return SkBlendMode::kHue; | |||
| 579 | case FT_COLR_COMPOSITE_HSL_SATURATION: | |||
| 580 | return SkBlendMode::kSaturation; | |||
| 581 | case FT_COLR_COMPOSITE_HSL_COLOR: | |||
| 582 | return SkBlendMode::kColor; | |||
| 583 | case FT_COLR_COMPOSITE_HSL_LUMINOSITY: | |||
| 584 | return SkBlendMode::kLuminosity; | |||
| 585 | default: | |||
| 586 | return SkBlendMode::kDst; | |||
| 587 | } | |||
| 588 | } | |||
| 589 | ||||
| 590 | inline SkMatrix ToSkMatrix(FT_Affine23 affine23) { | |||
| 591 | // Convert from FreeType's FT_Affine23 column major order to SkMatrix row-major order. | |||
| 592 | return SkMatrix::MakeAll( | |||
| 593 | SkFixedToScalar(affine23.xx)((affine23.xx) * 1.52587890625e-5f), -SkFixedToScalar(affine23.xy)((affine23.xy) * 1.52587890625e-5f), SkFixedToScalar(affine23.dx)((affine23.dx) * 1.52587890625e-5f), | |||
| 594 | -SkFixedToScalar(affine23.yx)((affine23.yx) * 1.52587890625e-5f), SkFixedToScalar(affine23.yy)((affine23.yy) * 1.52587890625e-5f), -SkFixedToScalar(affine23.dy)((affine23.dy) * 1.52587890625e-5f), | |||
| 595 | 0, 0, 1); | |||
| 596 | } | |||
| 597 | ||||
| 598 | inline SkPoint SkVectorProjection(SkPoint a, SkPoint b) { | |||
| 599 | SkScalar length = b.length(); | |||
| 600 | if (!length) { | |||
| 601 | return SkPoint(); | |||
| 602 | } | |||
| 603 | SkPoint bNormalized = b; | |||
| 604 | bNormalized.normalize(); | |||
| 605 | bNormalized.scale(SkPoint::DotProduct(a, b) / length); | |||
| 606 | return bNormalized; | |||
| 607 | } | |||
| 608 | ||||
| 609 | bool colrv1_configure_skpaint(FT_Face face, | |||
| 610 | const SkSpan<SkColor>& palette, | |||
| 611 | const SkColor foregroundColor, | |||
| 612 | const FT_COLR_Paint& colrPaint, | |||
| 613 | SkPaint* paint) { | |||
| 614 | auto fetchColorStops = [&face, &palette, &foregroundColor]( | |||
| 615 | const FT_ColorStopIterator& colorStopIterator, | |||
| 616 | std::vector<SkScalar>& stops, | |||
| 617 | std::vector<SkColor4f>& colors) -> bool { | |||
| 618 | const FT_UInt colorStopCount = colorStopIterator.num_color_stops; | |||
| 619 | if (colorStopCount == 0) { | |||
| 620 | return false; | |||
| 621 | } | |||
| 622 | ||||
| 623 | // 5.7.11.2.4 ColorIndex, ColorStop and ColorLine | |||
| 624 | // "Applications shall apply the colorStops in increasing stopOffset order." | |||
| 625 | struct ColorStop { | |||
| 626 | SkScalar pos; | |||
| 627 | SkColor4f color; | |||
| 628 | }; | |||
| 629 | std::vector<ColorStop> colorStopsSorted; | |||
| 630 | colorStopsSorted.resize(colorStopCount); | |||
| 631 | ||||
| 632 | FT_ColorStop ftStop; | |||
| 633 | FT_ColorStopIterator mutable_color_stop_iterator = colorStopIterator; | |||
| 634 | while (FT_Get_Colorline_Stops(face, &ftStop, &mutable_color_stop_iterator)) { | |||
| 635 | FT_UInt index = mutable_color_stop_iterator.current_color_stop - 1; | |||
| 636 | ColorStop& skStop = colorStopsSorted[index]; | |||
| 637 | skStop.pos = ftStop.stop_offset / kColorStopShift; | |||
| 638 | FT_UInt16& palette_index = ftStop.color.palette_index; | |||
| 639 | if (palette_index == kForegroundColorPaletteIndex) { | |||
| 640 | skStop.color = SkColor4f::FromColor(foregroundColor); | |||
| 641 | } else if (palette_index >= palette.size()) { | |||
| 642 | return false; | |||
| 643 | } else { | |||
| 644 | skStop.color = SkColor4f::FromColor(palette[palette_index]); | |||
| 645 | } | |||
| 646 | skStop.color.fA *= SkColrV1AlphaToFloat(ftStop.color.alpha); | |||
| 647 | } | |||
| 648 | ||||
| 649 | std::stable_sort(colorStopsSorted.begin(), colorStopsSorted.end(), | |||
| 650 | [](const ColorStop& a, const ColorStop& b) { return a.pos < b.pos; }); | |||
| 651 | ||||
| 652 | stops.resize(colorStopCount); | |||
| 653 | colors.resize(colorStopCount); | |||
| 654 | for (size_t i = 0; i < colorStopCount; ++i) { | |||
| 655 | stops[i] = colorStopsSorted[i].pos; | |||
| 656 | colors[i] = colorStopsSorted[i].color; | |||
| 657 | } | |||
| 658 | return true; | |||
| 659 | }; | |||
| 660 | ||||
| 661 | switch (colrPaint.format) { | |||
| 662 | case FT_COLR_PAINTFORMAT_SOLID: { | |||
| 663 | FT_PaintSolid solid = colrPaint.u.solid; | |||
| 664 | ||||
| 665 | // Dont' draw anything with this color if the palette index is out of bounds. | |||
| 666 | SkColor4f color = SkColors::kTransparent; | |||
| 667 | if (solid.color.palette_index == kForegroundColorPaletteIndex) { | |||
| 668 | color = SkColor4f::FromColor(foregroundColor); | |||
| 669 | } else if (solid.color.palette_index >= palette.size()) { | |||
| 670 | return false; | |||
| 671 | } else { | |||
| 672 | color = SkColor4f::FromColor(palette[solid.color.palette_index]); | |||
| 673 | } | |||
| 674 | color.fA *= SkColrV1AlphaToFloat(solid.color.alpha); | |||
| 675 | paint->setShader(nullptr); | |||
| 676 | paint->setColor(color); | |||
| 677 | return true; | |||
| 678 | } | |||
| 679 | case FT_COLR_PAINTFORMAT_LINEAR_GRADIENT: { | |||
| 680 | const FT_PaintLinearGradient& linearGradient = colrPaint.u.linear_gradient; | |||
| 681 | std::vector<SkScalar> stops; | |||
| 682 | std::vector<SkColor4f> colors; | |||
| 683 | ||||
| 684 | if (!fetchColorStops(linearGradient.colorline.color_stop_iterator, stops, colors)) { | |||
| 685 | return false; | |||
| 686 | } | |||
| 687 | ||||
| 688 | if (stops.size() == 1) { | |||
| 689 | paint->setColor(colors[0]); | |||
| 690 | return true; | |||
| 691 | } | |||
| 692 | ||||
| 693 | SkPoint linePositions[2] = {SkPoint::Make( SkFixedToScalar(linearGradient.p0.x)((linearGradient.p0.x) * 1.52587890625e-5f), | |||
| 694 | -SkFixedToScalar(linearGradient.p0.y)((linearGradient.p0.y) * 1.52587890625e-5f)), | |||
| 695 | SkPoint::Make( SkFixedToScalar(linearGradient.p1.x)((linearGradient.p1.x) * 1.52587890625e-5f), | |||
| 696 | -SkFixedToScalar(linearGradient.p1.y)((linearGradient.p1.y) * 1.52587890625e-5f))}; | |||
| 697 | SkPoint p0 = linePositions[0]; | |||
| 698 | SkPoint p1 = linePositions[1]; | |||
| 699 | SkPoint p2 = SkPoint::Make( SkFixedToScalar(linearGradient.p2.x)((linearGradient.p2.x) * 1.52587890625e-5f), | |||
| 700 | -SkFixedToScalar(linearGradient.p2.y)((linearGradient.p2.y) * 1.52587890625e-5f)); | |||
| 701 | ||||
| 702 | // If p0p1 or p0p2 are degenerate probably nothing should be drawn. | |||
| 703 | // If p0p1 and p0p2 are parallel then one side is the first color and the other side is | |||
| 704 | // the last color, depending on the direction. | |||
| 705 | // For now, just use the first color. | |||
| 706 | if (p1 == p0 || p2 == p0 || !SkPoint::CrossProduct(p1 - p0, p2 - p0)) { | |||
| 707 | paint->setColor(colors[0]); | |||
| 708 | return true; | |||
| 709 | } | |||
| 710 | ||||
| 711 | // Follow implementation note in nanoemoji: | |||
| 712 | // https://github.com/googlefonts/nanoemoji/blob/0ac6e7bb4d8202db692574d8530a9b643f1b3b3c/src/nanoemoji/svg.py#L188 | |||
| 713 | // to compute a new gradient end point P3 as the orthogonal | |||
| 714 | // projection of the vector from p0 to p1 onto a line perpendicular | |||
| 715 | // to line p0p2 and passing through p0. | |||
| 716 | SkVector perpendicularToP2P0 = (p2 - p0); | |||
| 717 | perpendicularToP2P0 = SkPoint::Make( perpendicularToP2P0.y(), | |||
| 718 | -perpendicularToP2P0.x()); | |||
| 719 | SkVector p3 = p0 + SkVectorProjection((p1 - p0), perpendicularToP2P0); | |||
| 720 | linePositions[1] = p3; | |||
| 721 | ||||
| 722 | // Project/scale points according to stop extrema along p0p3 line, | |||
| 723 | // p3 being the result of the projection above, then scale stops to | |||
| 724 | // to [0, 1] range so that repeat modes work. The Skia linear | |||
| 725 | // gradient shader performs the repeat modes over the 0 to 1 range, | |||
| 726 | // that's why we need to scale the stops to within that range. | |||
| 727 | SkTileMode tileMode = ToSkTileMode(linearGradient.colorline.extend); | |||
| 728 | SkScalar colorStopRange = stops.back() - stops.front(); | |||
| 729 | // If the color stops are all at the same offset position, repeat and reflect modes | |||
| 730 | // become meaningless. | |||
| 731 | if (colorStopRange == 0.f) { | |||
| 732 | if (tileMode != SkTileMode::kClamp) { | |||
| 733 | paint->setColor(SK_ColorTRANSPARENT); | |||
| 734 | return true; | |||
| 735 | } else { | |||
| 736 | // Insert duplicated fake color stop in pad case at +1.0f to enable the projection | |||
| 737 | // of circles for an originally 0-length color stop range. Adding this stop will | |||
| 738 | // paint the equivalent gradient, because: All font specified color stops are in the | |||
| 739 | // same spot, mode is pad, so everything before this spot is painted with the first | |||
| 740 | // color, everything after this spot is painted with the last color. Not adding this | |||
| 741 | // stop will skip the projection and result in specifying non-normalized color stops | |||
| 742 | // to the shader. | |||
| 743 | stops.push_back(stops.back() + 1.0f); | |||
| 744 | colors.push_back(colors.back()); | |||
| 745 | colorStopRange = 1.0f; | |||
| 746 | } | |||
| 747 | } | |||
| 748 | SkASSERT(colorStopRange != 0.f)static_cast<void>( __builtin_expect(static_cast<bool >(colorStopRange != 0.f), 1) ? static_cast<void>(0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 748, "colorStopRange != 0.f"); ; sk_abort_no_print(); } while (false); } } while(false); }() ); | |||
| 749 | ||||
| 750 | // If the colorStopRange is 0 at this point, the default behavior of the shader is to | |||
| 751 | // clamp to 1 color stops that are above 1, clamp to 0 for color stops that are below 0, | |||
| 752 | // and repeat the outer color stops at 0 and 1 if the color stops are inside the | |||
| 753 | // range. That will result in the correct rendering. | |||
| 754 | if ((colorStopRange != 1 || stops.front() != 0.f)) { | |||
| 755 | SkVector p0p3 = p3 - p0; | |||
| 756 | SkVector p0Offset = p0p3; | |||
| 757 | p0Offset.scale(stops.front()); | |||
| 758 | SkVector p1Offset = p0p3; | |||
| 759 | p1Offset.scale(stops.back()); | |||
| 760 | ||||
| 761 | linePositions[0] = p0 + p0Offset; | |||
| 762 | linePositions[1] = p0 + p1Offset; | |||
| 763 | ||||
| 764 | SkScalar scaleFactor = 1 / colorStopRange; | |||
| 765 | SkScalar startOffset = stops.front(); | |||
| 766 | for (SkScalar& stop : stops) { | |||
| 767 | stop = (stop - startOffset) * scaleFactor; | |||
| 768 | } | |||
| 769 | } | |||
| 770 | ||||
| 771 | sk_sp<SkShader> shader(SkShaders::LinearGradient( | |||
| 772 | linePositions, | |||
| 773 | {{colors, stops, tileMode, SkColorSpace::MakeSRGB()}, | |||
| 774 | SkGradient::Interpolation{ | |||
| 775 | SkGradient::Interpolation::InPremul::kNo, | |||
| 776 | SkGradient::Interpolation::ColorSpace::kSRGB, | |||
| 777 | SkGradient::Interpolation::HueMethod::kShorter | |||
| 778 | }})); | |||
| 779 | ||||
| 780 | SkASSERT(shader)static_cast<void>( __builtin_expect(static_cast<bool >(shader), 1) ? static_cast<void>(0) : []{ do { if ( sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 780, "shader"); ; sk_abort_no_print(); } while (false); } } while(false); }() ); | |||
| 781 | // An opaque color is needed to ensure the gradient is not modulated by alpha. | |||
| 782 | paint->setColor(SK_ColorBLACK); | |||
| 783 | paint->setShader(shader); | |||
| 784 | return true; | |||
| 785 | } | |||
| 786 | case FT_COLR_PAINTFORMAT_RADIAL_GRADIENT: { | |||
| 787 | const FT_PaintRadialGradient& radialGradient = colrPaint.u.radial_gradient; | |||
| 788 | SkPoint start = SkPoint::Make( SkFixedToScalar(radialGradient.c0.x)((radialGradient.c0.x) * 1.52587890625e-5f), | |||
| 789 | -SkFixedToScalar(radialGradient.c0.y)((radialGradient.c0.y) * 1.52587890625e-5f)); | |||
| 790 | SkScalar startRadius = SkFixedToScalar(radialGradient.r0)((radialGradient.r0) * 1.52587890625e-5f); | |||
| 791 | SkPoint end = SkPoint::Make( SkFixedToScalar(radialGradient.c1.x)((radialGradient.c1.x) * 1.52587890625e-5f), | |||
| 792 | -SkFixedToScalar(radialGradient.c1.y)((radialGradient.c1.y) * 1.52587890625e-5f)); | |||
| 793 | SkScalar endRadius = SkFixedToScalar(radialGradient.r1)((radialGradient.r1) * 1.52587890625e-5f); | |||
| 794 | ||||
| 795 | ||||
| 796 | std::vector<SkScalar> stops; | |||
| 797 | std::vector<SkColor4f> colors; | |||
| 798 | if (!fetchColorStops(radialGradient.colorline.color_stop_iterator, stops, colors)) { | |||
| 799 | return false; | |||
| 800 | } | |||
| 801 | ||||
| 802 | if (stops.size() == 1) { | |||
| 803 | paint->setColor(colors[0]); | |||
| 804 | return true; | |||
| 805 | } | |||
| 806 | ||||
| 807 | SkScalar colorStopRange = stops.back() - stops.front(); | |||
| 808 | SkTileMode tileMode = ToSkTileMode(radialGradient.colorline.extend); | |||
| 809 | ||||
| 810 | if (colorStopRange == 0.f) { | |||
| 811 | if (tileMode != SkTileMode::kClamp) { | |||
| 812 | paint->setColor(SK_ColorTRANSPARENT); | |||
| 813 | return true; | |||
| 814 | } else { | |||
| 815 | // Insert duplicated fake color stop in pad case at +1.0f to enable the projection | |||
| 816 | // of circles for an originally 0-length color stop range. Adding this stop will | |||
| 817 | // paint the equivalent gradient, because: All font specified color stops are in the | |||
| 818 | // same spot, mode is pad, so everything before this spot is painted with the first | |||
| 819 | // color, everything after this spot is painted with the last color. Not adding this | |||
| 820 | // stop will skip the projection and result in specifying non-normalized color stops | |||
| 821 | // to the shader. | |||
| 822 | stops.push_back(stops.back() + 1.0f); | |||
| 823 | colors.push_back(colors.back()); | |||
| 824 | colorStopRange = 1.0f; | |||
| 825 | } | |||
| 826 | } | |||
| 827 | SkASSERT(colorStopRange != 0.f)static_cast<void>( __builtin_expect(static_cast<bool >(colorStopRange != 0.f), 1) ? static_cast<void>(0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 827, "colorStopRange != 0.f"); ; sk_abort_no_print(); } while (false); } } while(false); }() ); | |||
| 828 | ||||
| 829 | // If the colorStopRange is 0 at this point, the default behavior of the shader is to | |||
| 830 | // clamp to 1 color stops that are above 1, clamp to 0 for color stops that are below 0, | |||
| 831 | // and repeat the outer color stops at 0 and 1 if the color stops are inside the | |||
| 832 | // range. That will result in the correct rendering. | |||
| 833 | if (colorStopRange != 1 || stops.front() != 0.f) { | |||
| 834 | // For the Skia two-point caonical shader to understand the | |||
| 835 | // COLRv1 color stops we need to scale stops to 0 to 1 range and | |||
| 836 | // interpolate new centers and radii. Otherwise the shader | |||
| 837 | // clamps stops outside the range to 0 and 1 (larger interval) | |||
| 838 | // or repeats the outer stops at 0 and 1 if the (smaller | |||
| 839 | // interval). | |||
| 840 | SkVector startToEnd = end - start; | |||
| 841 | SkScalar radiusDiff = endRadius - startRadius; | |||
| 842 | SkScalar scaleFactor = 1 / colorStopRange; | |||
| 843 | SkScalar stopsStartOffset = stops.front(); | |||
| 844 | ||||
| 845 | SkVector startOffset = startToEnd; | |||
| 846 | startOffset.scale(stops.front()); | |||
| 847 | SkVector endOffset = startToEnd; | |||
| 848 | endOffset.scale(stops.back()); | |||
| 849 | ||||
| 850 | // The order of the following computations is important in order to avoid | |||
| 851 | // overwriting start or startRadius before the second reassignment. | |||
| 852 | end = start + endOffset; | |||
| 853 | start = start + startOffset; | |||
| 854 | endRadius = startRadius + radiusDiff * stops.back(); | |||
| 855 | startRadius = startRadius + radiusDiff * stops.front(); | |||
| 856 | ||||
| 857 | for (auto& stop : stops) { | |||
| 858 | stop = (stop - stopsStartOffset) * scaleFactor; | |||
| 859 | } | |||
| 860 | } | |||
| 861 | ||||
| 862 | // For negative radii, interpolation is needed to prepare parameters suitable | |||
| 863 | // for invoking the shader. Implementation below as resolution discussed in | |||
| 864 | // https://github.com/googlefonts/colr-gradients-spec/issues/367. | |||
| 865 | // Truncate to manually interpolated color for tile mode clamp, otherwise | |||
| 866 | // calculate positive projected circles. | |||
| 867 | if (startRadius < 0 || endRadius < 0) { | |||
| 868 | if (startRadius == endRadius && startRadius < 0) { | |||
| 869 | paint->setColor(SK_ColorTRANSPARENT); | |||
| 870 | return true; | |||
| 871 | } | |||
| 872 | ||||
| 873 | if (tileMode == SkTileMode::kClamp) { | |||
| 874 | SkVector startToEnd = end - start; | |||
| 875 | SkScalar radiusDiff = endRadius - startRadius; | |||
| 876 | SkScalar zeroRadiusStop = 0.f; | |||
| 877 | TruncateStops truncateSide = TruncateStart; | |||
| 878 | if (startRadius < 0) { | |||
| 879 | truncateSide = TruncateStart; | |||
| 880 | ||||
| 881 | // Compute color stop position where radius is = 0. After the scaling | |||
| 882 | // of stop positions to the normal 0,1 range that we have done above, | |||
| 883 | // the size of the radius as a function of the color stops is: r(x) = r0 | |||
| 884 | // + x*(r1-r0) Solving this function for r(x) = 0, we get: x = -r0 / | |||
| 885 | // (r1-r0) | |||
| 886 | zeroRadiusStop = -startRadius / (endRadius - startRadius); | |||
| 887 | startRadius = 0.f; | |||
| 888 | SkVector startEndDiff = end - start; | |||
| 889 | startEndDiff.scale(zeroRadiusStop); | |||
| 890 | start = start + startEndDiff; | |||
| 891 | } | |||
| 892 | ||||
| 893 | if (endRadius < 0) { | |||
| 894 | truncateSide = TruncateEnd; | |||
| 895 | zeroRadiusStop = -startRadius / (endRadius - startRadius); | |||
| 896 | endRadius = 0.f; | |||
| 897 | SkVector startEndDiff = end - start; | |||
| 898 | startEndDiff.scale(1 - zeroRadiusStop); | |||
| 899 | end = end - startEndDiff; | |||
| 900 | } | |||
| 901 | ||||
| 902 | if (!(startRadius == 0 && endRadius == 0)) { | |||
| 903 | truncateToStopInterpolating( | |||
| 904 | zeroRadiusStop, colors, stops, truncateSide); | |||
| 905 | } else { | |||
| 906 | // If both radii have become negative and where clamped to 0, we need to | |||
| 907 | // produce a single color cone, otherwise the shader colors the whole | |||
| 908 | // plane in a single color when two radii are specified as 0. | |||
| 909 | if (radiusDiff > 0) { | |||
| 910 | end = start + startToEnd; | |||
| 911 | endRadius = radiusDiff; | |||
| 912 | colors.erase(colors.begin(), colors.end() - 1); | |||
| 913 | stops.erase(stops.begin(), stops.end() - 1); | |||
| 914 | } else { | |||
| 915 | start -= startToEnd; | |||
| 916 | startRadius = -radiusDiff; | |||
| 917 | colors.erase(colors.begin() + 1, colors.end()); | |||
| 918 | stops.erase(stops.begin() + 1, stops.end()); | |||
| 919 | } | |||
| 920 | } | |||
| 921 | } else { | |||
| 922 | if (startRadius < 0 || endRadius < 0) { | |||
| 923 | auto roundIntegerMultiple = [](SkScalar factorZeroCrossing, | |||
| 924 | SkTileMode tileMode) { | |||
| 925 | int roundedMultiple = factorZeroCrossing > 0 | |||
| 926 | ? ceilf(factorZeroCrossing) | |||
| 927 | : floorf(factorZeroCrossing) - 1; | |||
| 928 | if (tileMode == SkTileMode::kMirror && roundedMultiple % 2 != 0) { | |||
| 929 | roundedMultiple += roundedMultiple < 0 ? -1 : 1; | |||
| 930 | } | |||
| 931 | return roundedMultiple; | |||
| 932 | }; | |||
| 933 | ||||
| 934 | SkVector startToEnd = end - start; | |||
| 935 | SkScalar radiusDiff = endRadius - startRadius; | |||
| 936 | SkScalar factorZeroCrossing = (startRadius / (startRadius - endRadius)); | |||
| 937 | bool inRange = 0.f <= factorZeroCrossing && factorZeroCrossing <= 1.0f; | |||
| 938 | SkScalar direction = inRange && radiusDiff < 0 ? -1.0f : 1.0f; | |||
| 939 | SkScalar circleProjectionFactor = | |||
| 940 | roundIntegerMultiple(factorZeroCrossing * direction, tileMode); | |||
| 941 | startToEnd.scale(circleProjectionFactor); | |||
| 942 | startRadius += circleProjectionFactor * radiusDiff; | |||
| 943 | endRadius += circleProjectionFactor * radiusDiff; | |||
| 944 | start += startToEnd; | |||
| 945 | end += startToEnd; | |||
| 946 | } | |||
| 947 | } | |||
| 948 | } | |||
| 949 | ||||
| 950 | // An opaque color is needed to ensure the gradient is not modulated by alpha. | |||
| 951 | paint->setColor(SK_ColorBLACK); | |||
| 952 | ||||
| 953 | paint->setShader(SkShaders::TwoPointConicalGradient( | |||
| 954 | start, startRadius, end, endRadius, | |||
| 955 | {{colors, stops, tileMode, SkColorSpace::MakeSRGB()}, | |||
| 956 | SkGradient::Interpolation{ | |||
| 957 | SkGradient::Interpolation::InPremul::kNo, | |||
| 958 | SkGradient::Interpolation::ColorSpace::kSRGB, | |||
| 959 | SkGradient::Interpolation::HueMethod::kShorter | |||
| 960 | }}, | |||
| 961 | nullptr)); | |||
| 962 | ||||
| 963 | return true; | |||
| 964 | } | |||
| 965 | case FT_COLR_PAINTFORMAT_SWEEP_GRADIENT: { | |||
| 966 | const FT_PaintSweepGradient& sweepGradient = colrPaint.u.sweep_gradient; | |||
| 967 | SkPoint center = SkPoint::Make( SkFixedToScalar(sweepGradient.center.x)((sweepGradient.center.x) * 1.52587890625e-5f), | |||
| 968 | -SkFixedToScalar(sweepGradient.center.y)((sweepGradient.center.y) * 1.52587890625e-5f)); | |||
| 969 | ||||
| 970 | ||||
| 971 | SkScalar startAngle = SkFixedToScalar(sweepGradient.start_angle * 180.0f)((sweepGradient.start_angle * 180.0f) * 1.52587890625e-5f); | |||
| 972 | SkScalar endAngle = SkFixedToScalar(sweepGradient.end_angle * 180.0f)((sweepGradient.end_angle * 180.0f) * 1.52587890625e-5f); | |||
| 973 | // OpenType 1.9.1 adds a shift to the angle to ease specification of a 0 to 360 | |||
| 974 | // degree sweep. | |||
| 975 | startAngle += 180.0f; | |||
| 976 | endAngle += 180.0f; | |||
| 977 | ||||
| 978 | std::vector<SkScalar> stops; | |||
| 979 | std::vector<SkColor4f> colors; | |||
| 980 | if (!fetchColorStops(sweepGradient.colorline.color_stop_iterator, stops, colors)) { | |||
| 981 | return false; | |||
| 982 | } | |||
| 983 | ||||
| 984 | if (stops.size() == 1) { | |||
| 985 | paint->setColor(colors[0]); | |||
| 986 | return true; | |||
| 987 | } | |||
| 988 | ||||
| 989 | // An opaque color is needed to ensure the gradient is not modulated by alpha. | |||
| 990 | paint->setColor(SK_ColorBLACK); | |||
| 991 | ||||
| 992 | // New (Var)SweepGradient implementation compliant with OpenType 1.9.1 from here. | |||
| 993 | ||||
| 994 | // The shader expects stops from 0 to 1, so we need to account for | |||
| 995 | // minimum and maximum stop positions being different from 0 and | |||
| 996 | // 1. We do that by scaling minimum and maximum stop positions to | |||
| 997 | // the 0 to 1 interval and scaling the angles inverse proportionally. | |||
| 998 | ||||
| 999 | // 1) Scale angles to their equivalent positions if stops were from 0 to 1. | |||
| 1000 | ||||
| 1001 | SkScalar sectorAngle = endAngle - startAngle; | |||
| 1002 | SkTileMode tileMode = ToSkTileMode(sweepGradient.colorline.extend); | |||
| 1003 | if (sectorAngle == 0 && tileMode != SkTileMode::kClamp) { | |||
| 1004 | // "If the ColorLine's extend mode is reflect or repeat and start and end angle | |||
| 1005 | // are equal, nothing is drawn.". | |||
| 1006 | paint->setColor(SK_ColorTRANSPARENT); | |||
| 1007 | return true; | |||
| 1008 | } | |||
| 1009 | ||||
| 1010 | ||||
| 1011 | SkScalar startAngleScaled = startAngle + sectorAngle * stops.front(); | |||
| 1012 | SkScalar endAngleScaled = startAngle + sectorAngle * stops.back(); | |||
| 1013 | ||||
| 1014 | // 2) Scale stops accordingly to 0 to 1 range. | |||
| 1015 | ||||
| 1016 | float colorStopRange = stops.back() - stops.front(); | |||
| 1017 | if (colorStopRange == 0.f) { | |||
| 1018 | if (tileMode != SkTileMode::kClamp) { | |||
| 1019 | paint->setColor(SK_ColorTRANSPARENT); | |||
| 1020 | return true; | |||
| 1021 | } else { | |||
| 1022 | // Insert duplicated fake color stop in pad case at +1.0f to feed the shader correct | |||
| 1023 | // values and enable painting a pad sweep gradient with two colors. Adding this stop | |||
| 1024 | // will paint the equivalent gradient, because: All font specified color stops are | |||
| 1025 | // in the same spot, mode is pad, so everything before this spot is painted with the | |||
| 1026 | // first color, everything after this spot is painted with the last color. Not | |||
| 1027 | // adding this stop will skip the projection and result in specifying non-normalized | |||
| 1028 | // color stops to the shader. | |||
| 1029 | stops.push_back(stops.back() + 1.0f); | |||
| 1030 | colors.push_back(colors.back()); | |||
| 1031 | colorStopRange = 1.0f; | |||
| 1032 | } | |||
| 1033 | } | |||
| 1034 | ||||
| 1035 | SkScalar scaleFactor = 1 / colorStopRange; | |||
| 1036 | SkScalar startOffset = stops.front(); | |||
| 1037 | ||||
| 1038 | for (SkScalar& stop : stops) { | |||
| 1039 | stop = (stop - startOffset) * scaleFactor; | |||
| 1040 | } | |||
| 1041 | ||||
| 1042 | /* https://docs.microsoft.com/en-us/typography/opentype/spec/colr#sweep-gradients | |||
| 1043 | * "The angles are expressed in counter-clockwise degrees from | |||
| 1044 | * the direction of the positive x-axis on the design | |||
| 1045 | * grid. [...] The color line progresses from the start angle | |||
| 1046 | * to the end angle in the counter-clockwise direction;" - | |||
| 1047 | * Convert angles and stops from counter-clockwise to clockwise | |||
| 1048 | * for the shader if the gradient is not already reversed due to | |||
| 1049 | * start angle being larger than end angle. */ | |||
| 1050 | startAngleScaled = 360.f - startAngleScaled; | |||
| 1051 | endAngleScaled = 360.f - endAngleScaled; | |||
| 1052 | if (startAngleScaled >= endAngleScaled) { | |||
| 1053 | std::swap(startAngleScaled, endAngleScaled); | |||
| 1054 | std::reverse(stops.begin(), stops.end()); | |||
| 1055 | std::reverse(colors.begin(), colors.end()); | |||
| 1056 | for (auto& stop : stops) { | |||
| 1057 | stop = 1.0f - stop; | |||
| 1058 | } | |||
| 1059 | } | |||
| 1060 | ||||
| 1061 | paint->setShader(SkShaders::SweepGradient( | |||
| 1062 | center, startAngleScaled, endAngleScaled, | |||
| 1063 | {{colors, stops, tileMode, SkColorSpace::MakeSRGB()}, | |||
| 1064 | { | |||
| 1065 | SkGradient::Interpolation::InPremul::kNo, | |||
| 1066 | SkGradient::Interpolation::ColorSpace::kSRGB, | |||
| 1067 | SkGradient::Interpolation::HueMethod::kShorter | |||
| 1068 | }}, | |||
| 1069 | nullptr)); | |||
| 1070 | ||||
| 1071 | return true; | |||
| 1072 | } | |||
| 1073 | default: { | |||
| 1074 | SkASSERT(false)static_cast<void>( __builtin_expect(static_cast<bool >(false), 1) ? static_cast<void>(0) : []{ do { if (sk_abort_is_enabled ()) { do { SkDebugf("%s:%d" ": fatal error: \"" "check(%s)" "\"\n" , "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1074, "false"); ; sk_abort_no_print(); } while (false); } } while(false); }() ); | |||
| 1075 | return false; | |||
| 1076 | } | |||
| 1077 | } | |||
| 1078 | SkUNREACHABLE__builtin_trap(); | |||
| 1079 | } | |||
| 1080 | ||||
| 1081 | bool colrv1_draw_paint(SkCanvas* canvas, | |||
| 1082 | const SkSpan<SkColor>& palette, | |||
| 1083 | const SkColor foregroundColor, | |||
| 1084 | FT_Face face, | |||
| 1085 | const FT_COLR_Paint& colrPaint) { | |||
| 1086 | switch (colrPaint.format) { | |||
| 1087 | case FT_COLR_PAINTFORMAT_GLYPH: { | |||
| 1088 | auto path = generateFacePathCOLRv1(face, colrPaint.u.glyph.glyphID); | |||
| 1089 | if (!path) { | |||
| 1090 | return false; | |||
| 1091 | } | |||
| 1092 | if constexpr (kSkShowTextBlitCoverage) { | |||
| 1093 | SkPaint highlight_paint; | |||
| 1094 | highlight_paint.setColor(0x33FF0000); | |||
| 1095 | canvas->drawRect(path->getBounds(), highlight_paint); | |||
| 1096 | } | |||
| 1097 | canvas->clipPath(*path, true /* doAntiAlias */); | |||
| 1098 | return true; | |||
| 1099 | } | |||
| 1100 | case FT_COLR_PAINTFORMAT_SOLID: | |||
| 1101 | case FT_COLR_PAINTFORMAT_LINEAR_GRADIENT: | |||
| 1102 | case FT_COLR_PAINTFORMAT_RADIAL_GRADIENT: | |||
| 1103 | case FT_COLR_PAINTFORMAT_SWEEP_GRADIENT: { | |||
| 1104 | SkPaint skPaint; | |||
| 1105 | if (!colrv1_configure_skpaint(face, palette, foregroundColor, colrPaint, &skPaint)) { | |||
| 1106 | return false; | |||
| 1107 | } | |||
| 1108 | canvas->drawPaint(skPaint); | |||
| 1109 | return true; | |||
| 1110 | } | |||
| 1111 | case FT_COLR_PAINTFORMAT_TRANSFORM: | |||
| 1112 | case FT_COLR_PAINTFORMAT_TRANSLATE: | |||
| 1113 | case FT_COLR_PAINTFORMAT_SCALE: | |||
| 1114 | case FT_COLR_PAINTFORMAT_ROTATE: | |||
| 1115 | case FT_COLR_PAINTFORMAT_SKEW: | |||
| 1116 | [[fallthrough]]; // Transforms handled in colrv1_transform. | |||
| 1117 | default: | |||
| 1118 | SkASSERT(false)static_cast<void>( __builtin_expect(static_cast<bool >(false), 1) ? static_cast<void>(0) : []{ do { if (sk_abort_is_enabled ()) { do { SkDebugf("%s:%d" ": fatal error: \"" "check(%s)" "\"\n" , "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1118, "false"); ; sk_abort_no_print(); } while (false); } } while(false); }() ); | |||
| 1119 | return false; | |||
| 1120 | } | |||
| 1121 | SkUNREACHABLE__builtin_trap(); | |||
| 1122 | } | |||
| 1123 | ||||
| 1124 | bool colrv1_draw_glyph_with_path(SkCanvas* canvas, | |||
| 1125 | const SkSpan<SkColor>& palette, SkColor foregroundColor, | |||
| 1126 | FT_Face face, | |||
| 1127 | const FT_COLR_Paint& glyphPaint, const FT_COLR_Paint& fillPaint) { | |||
| 1128 | SkASSERT(glyphPaint.format == FT_COLR_PAINTFORMAT_GLYPH)static_cast<void>( __builtin_expect(static_cast<bool >(glyphPaint.format == FT_COLR_PAINTFORMAT_GLYPH), 1) ? static_cast <void>(0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf ("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1128, "glyphPaint.format == FT_COLR_PAINTFORMAT_GLYPH"); ; sk_abort_no_print (); } while (false); } } while(false); }() ); | |||
| 1129 | SkASSERT(fillPaint.format == FT_COLR_PAINTFORMAT_SOLID ||static_cast<void>( __builtin_expect(static_cast<bool >(fillPaint.format == FT_COLR_PAINTFORMAT_SOLID || fillPaint .format == FT_COLR_PAINTFORMAT_LINEAR_GRADIENT || fillPaint.format == FT_COLR_PAINTFORMAT_RADIAL_GRADIENT || fillPaint.format == FT_COLR_PAINTFORMAT_SWEEP_GRADIENT), 1) ? static_cast<void >(0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf ("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1132, "fillPaint.format == FT_COLR_PAINTFORMAT_SOLID || fillPaint.format == FT_COLR_PAINTFORMAT_LINEAR_GRADIENT || fillPaint.format == FT_COLR_PAINTFORMAT_RADIAL_GRADIENT || fillPaint.format == FT_COLR_PAINTFORMAT_SWEEP_GRADIENT" ); ; sk_abort_no_print(); } while (false); } } while(false); } () ) | |||
| 1130 | fillPaint.format == FT_COLR_PAINTFORMAT_LINEAR_GRADIENT ||static_cast<void>( __builtin_expect(static_cast<bool >(fillPaint.format == FT_COLR_PAINTFORMAT_SOLID || fillPaint .format == FT_COLR_PAINTFORMAT_LINEAR_GRADIENT || fillPaint.format == FT_COLR_PAINTFORMAT_RADIAL_GRADIENT || fillPaint.format == FT_COLR_PAINTFORMAT_SWEEP_GRADIENT), 1) ? static_cast<void >(0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf ("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1132, "fillPaint.format == FT_COLR_PAINTFORMAT_SOLID || fillPaint.format == FT_COLR_PAINTFORMAT_LINEAR_GRADIENT || fillPaint.format == FT_COLR_PAINTFORMAT_RADIAL_GRADIENT || fillPaint.format == FT_COLR_PAINTFORMAT_SWEEP_GRADIENT" ); ; sk_abort_no_print(); } while (false); } } while(false); } () ) | |||
| 1131 | fillPaint.format == FT_COLR_PAINTFORMAT_RADIAL_GRADIENT ||static_cast<void>( __builtin_expect(static_cast<bool >(fillPaint.format == FT_COLR_PAINTFORMAT_SOLID || fillPaint .format == FT_COLR_PAINTFORMAT_LINEAR_GRADIENT || fillPaint.format == FT_COLR_PAINTFORMAT_RADIAL_GRADIENT || fillPaint.format == FT_COLR_PAINTFORMAT_SWEEP_GRADIENT), 1) ? static_cast<void >(0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf ("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1132, "fillPaint.format == FT_COLR_PAINTFORMAT_SOLID || fillPaint.format == FT_COLR_PAINTFORMAT_LINEAR_GRADIENT || fillPaint.format == FT_COLR_PAINTFORMAT_RADIAL_GRADIENT || fillPaint.format == FT_COLR_PAINTFORMAT_SWEEP_GRADIENT" ); ; sk_abort_no_print(); } while (false); } } while(false); } () ) | |||
| 1132 | fillPaint.format == FT_COLR_PAINTFORMAT_SWEEP_GRADIENT)static_cast<void>( __builtin_expect(static_cast<bool >(fillPaint.format == FT_COLR_PAINTFORMAT_SOLID || fillPaint .format == FT_COLR_PAINTFORMAT_LINEAR_GRADIENT || fillPaint.format == FT_COLR_PAINTFORMAT_RADIAL_GRADIENT || fillPaint.format == FT_COLR_PAINTFORMAT_SWEEP_GRADIENT), 1) ? static_cast<void >(0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf ("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1132, "fillPaint.format == FT_COLR_PAINTFORMAT_SOLID || fillPaint.format == FT_COLR_PAINTFORMAT_LINEAR_GRADIENT || fillPaint.format == FT_COLR_PAINTFORMAT_RADIAL_GRADIENT || fillPaint.format == FT_COLR_PAINTFORMAT_SWEEP_GRADIENT" ); ; sk_abort_no_print(); } while (false); } } while(false); } () ); | |||
| 1133 | ||||
| 1134 | SkPaint skiaFillPaint; | |||
| 1135 | skiaFillPaint.setAntiAlias(true); | |||
| 1136 | if (!colrv1_configure_skpaint(face, palette, foregroundColor, fillPaint, &skiaFillPaint)) { | |||
| 1137 | return false; | |||
| 1138 | } | |||
| 1139 | ||||
| 1140 | auto path = generateFacePathCOLRv1(face, glyphPaint.u.glyph.glyphID); | |||
| 1141 | if (!path) { | |||
| 1142 | return false; | |||
| 1143 | } | |||
| 1144 | if constexpr (kSkShowTextBlitCoverage) { | |||
| 1145 | SkPaint highlightPaint; | |||
| 1146 | highlightPaint.setColor(0x33FF0000); | |||
| 1147 | canvas->drawRect(path->getBounds(), highlightPaint); | |||
| 1148 | } | |||
| 1149 | canvas->drawPath(*path, skiaFillPaint); | |||
| 1150 | return true; | |||
| 1151 | } | |||
| 1152 | ||||
| 1153 | ||||
| 1154 | /* In drawing mode, concatenates the transforms directly on SkCanvas. In | |||
| 1155 | * bounding box calculation mode, no SkCanvas is specified, but we only want to | |||
| 1156 | * retrieve the transform from the FreeType paint object. */ | |||
| 1157 | void colrv1_transform(FT_Face face, | |||
| 1158 | const FT_COLR_Paint& colrPaint, | |||
| 1159 | SkCanvas* canvas, | |||
| 1160 | SkMatrix* outTransform = nullptr) { | |||
| 1161 | SkMatrix transform; | |||
| 1162 | ||||
| 1163 | SkASSERT(canvas || outTransform)static_cast<void>( __builtin_expect(static_cast<bool >(canvas || outTransform), 1) ? static_cast<void>(0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1163, "canvas || outTransform"); ; sk_abort_no_print(); } while (false); } } while(false); }() ); | |||
| 1164 | ||||
| 1165 | switch (colrPaint.format) { | |||
| 1166 | case FT_COLR_PAINTFORMAT_TRANSFORM: { | |||
| 1167 | transform = ToSkMatrix(colrPaint.u.transform.affine); | |||
| 1168 | break; | |||
| 1169 | } | |||
| 1170 | case FT_COLR_PAINTFORMAT_TRANSLATE: { | |||
| 1171 | transform = SkMatrix::Translate( SkFixedToScalar(colrPaint.u.translate.dx)((colrPaint.u.translate.dx) * 1.52587890625e-5f), | |||
| 1172 | -SkFixedToScalar(colrPaint.u.translate.dy)((colrPaint.u.translate.dy) * 1.52587890625e-5f)); | |||
| 1173 | break; | |||
| 1174 | } | |||
| 1175 | case FT_COLR_PAINTFORMAT_SCALE: { | |||
| 1176 | transform.setScale( SkFixedToScalar(colrPaint.u.scale.scale_x)((colrPaint.u.scale.scale_x) * 1.52587890625e-5f), | |||
| 1177 | SkFixedToScalar(colrPaint.u.scale.scale_y)((colrPaint.u.scale.scale_y) * 1.52587890625e-5f), | |||
| 1178 | SkFixedToScalar(colrPaint.u.scale.center_x)((colrPaint.u.scale.center_x) * 1.52587890625e-5f), | |||
| 1179 | -SkFixedToScalar(colrPaint.u.scale.center_y)((colrPaint.u.scale.center_y) * 1.52587890625e-5f)); | |||
| 1180 | break; | |||
| 1181 | } | |||
| 1182 | case FT_COLR_PAINTFORMAT_ROTATE: { | |||
| 1183 | // COLRv1 angles are counter-clockwise, compare | |||
| 1184 | // https://docs.microsoft.com/en-us/typography/opentype/spec/colr#formats-24-to-27-paintrotate-paintvarrotate-paintrotatearoundcenter-paintvarrotatearoundcenter | |||
| 1185 | transform = SkMatrix::RotateDeg( | |||
| 1186 | -SkFixedToScalar(colrPaint.u.rotate.angle)((colrPaint.u.rotate.angle) * 1.52587890625e-5f) * 180.0f, | |||
| 1187 | SkPoint::Make( SkFixedToScalar(colrPaint.u.rotate.center_x)((colrPaint.u.rotate.center_x) * 1.52587890625e-5f), | |||
| 1188 | -SkFixedToScalar(colrPaint.u.rotate.center_y)((colrPaint.u.rotate.center_y) * 1.52587890625e-5f))); | |||
| 1189 | break; | |||
| 1190 | } | |||
| 1191 | case FT_COLR_PAINTFORMAT_SKEW: { | |||
| 1192 | // In the PAINTFORMAT_ROTATE implementation, SkMatrix setRotate | |||
| 1193 | // snaps to 0 for values very close to 0. Do the same here. | |||
| 1194 | ||||
| 1195 | SkScalar xDeg = SkFixedToScalar(colrPaint.u.skew.x_skew_angle)((colrPaint.u.skew.x_skew_angle) * 1.52587890625e-5f) * 180.0f; | |||
| 1196 | SkScalar xRad = SkDegreesToRadians(xDeg)((xDeg) * (SK_FloatPI / 180)); | |||
| 1197 | SkScalar xTan = SkScalarTan(xRad)((float)std::tan(xRad)); | |||
| 1198 | xTan = SkScalarNearlyZero(xTan) ? 0.0f : xTan; | |||
| 1199 | ||||
| 1200 | SkScalar yDeg = SkFixedToScalar(colrPaint.u.skew.y_skew_angle)((colrPaint.u.skew.y_skew_angle) * 1.52587890625e-5f) * 180.0f; | |||
| 1201 | // Negate y_skew_angle due to Skia's y-down coordinate system to achieve | |||
| 1202 | // counter-clockwise skew along the y-axis. | |||
| 1203 | SkScalar yRad = SkDegreesToRadians(-yDeg)((-yDeg) * (SK_FloatPI / 180)); | |||
| 1204 | SkScalar yTan = SkScalarTan(yRad)((float)std::tan(yRad)); | |||
| 1205 | yTan = SkScalarNearlyZero(yTan) ? 0.0f : yTan; | |||
| 1206 | ||||
| 1207 | transform.setSkew(xTan, yTan, | |||
| 1208 | SkFixedToScalar(colrPaint.u.skew.center_x)((colrPaint.u.skew.center_x) * 1.52587890625e-5f), | |||
| 1209 | -SkFixedToScalar(colrPaint.u.skew.center_y)((colrPaint.u.skew.center_y) * 1.52587890625e-5f)); | |||
| 1210 | break; | |||
| 1211 | } | |||
| 1212 | default: { | |||
| 1213 | SkASSERT(false)static_cast<void>( __builtin_expect(static_cast<bool >(false), 1) ? static_cast<void>(0) : []{ do { if (sk_abort_is_enabled ()) { do { SkDebugf("%s:%d" ": fatal error: \"" "check(%s)" "\"\n" , "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1213, "false"); ; sk_abort_no_print(); } while (false); } } while(false); }() ); // Only transforms are handled in this function. | |||
| 1214 | } | |||
| 1215 | } | |||
| 1216 | if (canvas) { | |||
| 1217 | canvas->concat(transform); | |||
| 1218 | } | |||
| 1219 | if (outTransform) { | |||
| 1220 | *outTransform = transform; | |||
| 1221 | } | |||
| 1222 | } | |||
| 1223 | ||||
| 1224 | bool colrv1_start_glyph(SkCanvas* canvas, | |||
| 1225 | const SkSpan<SkColor>& palette, | |||
| 1226 | SkColor foregroundColor, | |||
| 1227 | FT_Face face, | |||
| 1228 | SkGlyphID glyphId, | |||
| 1229 | FT_Color_Root_Transform rootTransform, | |||
| 1230 | VisitedSet* activePaints); | |||
| 1231 | ||||
| 1232 | bool colrv1_traverse_paint(SkCanvas* canvas, | |||
| 1233 | const SkSpan<SkColor>& palette, | |||
| 1234 | const SkColor foregroundColor, | |||
| 1235 | FT_Face face, | |||
| 1236 | FT_OpaquePaint opaquePaint, | |||
| 1237 | VisitedSet* activePaints) { | |||
| 1238 | // Cycle detection, see section "5.7.11.1.9 Color glyphs as a directed acyclic graph". | |||
| 1239 | if (activePaints->contains(opaquePaint)) { | |||
| 1240 | return true; | |||
| 1241 | } | |||
| 1242 | ||||
| 1243 | activePaints->add(opaquePaint); | |||
| 1244 | SK_AT_SCOPE_EXIT(activePaints->remove(opaquePaint))SkScopeExit at_scope_exit_1244([&]() { activePaints->remove (opaquePaint); }); | |||
| 1245 | ||||
| 1246 | FT_COLR_Paint paint; | |||
| 1247 | if (!FT_Get_Paint(face, opaquePaint, &paint)) { | |||
| 1248 | return false; | |||
| 1249 | } | |||
| 1250 | ||||
| 1251 | SkAutoCanvasRestore autoRestore(canvas, true /* doSave */); | |||
| 1252 | switch (paint.format) { | |||
| 1253 | case FT_COLR_PAINTFORMAT_COLR_LAYERS: { | |||
| 1254 | FT_LayerIterator& layerIterator = paint.u.colr_layers.layer_iterator; | |||
| 1255 | FT_OpaquePaint layerPaint{nullptr, 1}; | |||
| 1256 | while (FT_Get_Paint_Layers(face, &layerIterator, &layerPaint)) { | |||
| 1257 | if (!colrv1_traverse_paint(canvas, palette, foregroundColor, face, | |||
| 1258 | layerPaint, activePaints)) { | |||
| 1259 | return false; | |||
| 1260 | } | |||
| 1261 | } | |||
| 1262 | return true; | |||
| 1263 | } | |||
| 1264 | case FT_COLR_PAINTFORMAT_GLYPH: | |||
| 1265 | // Special case paint graph leaf situations to improve | |||
| 1266 | // performance. These are situations in the graph where a GlyphPaint | |||
| 1267 | // is followed by either a solid or a gradient fill. Here we can use | |||
| 1268 | // drawPath() + SkPaint directly which is faster than setting a | |||
| 1269 | // clipPath() followed by a drawPaint(). | |||
| 1270 | FT_COLR_Paint fillPaint; | |||
| 1271 | if (!FT_Get_Paint(face, paint.u.glyph.paint, &fillPaint)) { | |||
| 1272 | return false; | |||
| 1273 | } | |||
| 1274 | if (fillPaint.format == FT_COLR_PAINTFORMAT_SOLID || | |||
| 1275 | fillPaint.format == FT_COLR_PAINTFORMAT_LINEAR_GRADIENT || | |||
| 1276 | fillPaint.format == FT_COLR_PAINTFORMAT_RADIAL_GRADIENT || | |||
| 1277 | fillPaint.format == FT_COLR_PAINTFORMAT_SWEEP_GRADIENT) | |||
| 1278 | { | |||
| 1279 | return colrv1_draw_glyph_with_path(canvas, palette, foregroundColor, | |||
| 1280 | face, paint, fillPaint); | |||
| 1281 | } | |||
| 1282 | if (!colrv1_draw_paint(canvas, palette, foregroundColor, face, paint)) { | |||
| 1283 | return false; | |||
| 1284 | } | |||
| 1285 | return colrv1_traverse_paint(canvas, palette, foregroundColor, | |||
| 1286 | face, paint.u.glyph.paint, activePaints); | |||
| 1287 | case FT_COLR_PAINTFORMAT_COLR_GLYPH: | |||
| 1288 | return colrv1_start_glyph(canvas, palette, foregroundColor, | |||
| 1289 | face, paint.u.colr_glyph.glyphID, FT_COLOR_NO_ROOT_TRANSFORM, | |||
| 1290 | activePaints); | |||
| 1291 | case FT_COLR_PAINTFORMAT_TRANSFORM: | |||
| 1292 | colrv1_transform(face, paint, canvas); | |||
| 1293 | return colrv1_traverse_paint(canvas, palette, foregroundColor, | |||
| 1294 | face, paint.u.transform.paint, activePaints); | |||
| 1295 | case FT_COLR_PAINTFORMAT_TRANSLATE: | |||
| 1296 | colrv1_transform(face, paint, canvas); | |||
| 1297 | return colrv1_traverse_paint(canvas, palette, foregroundColor, | |||
| 1298 | face, paint.u.translate.paint, activePaints); | |||
| 1299 | case FT_COLR_PAINTFORMAT_SCALE: | |||
| 1300 | colrv1_transform(face, paint, canvas); | |||
| 1301 | return colrv1_traverse_paint(canvas, palette, foregroundColor, | |||
| 1302 | face, paint.u.scale.paint, activePaints); | |||
| 1303 | case FT_COLR_PAINTFORMAT_ROTATE: | |||
| 1304 | colrv1_transform(face, paint, canvas); | |||
| 1305 | return colrv1_traverse_paint(canvas, palette, foregroundColor, | |||
| 1306 | face, paint.u.rotate.paint, activePaints); | |||
| 1307 | case FT_COLR_PAINTFORMAT_SKEW: | |||
| 1308 | colrv1_transform(face, paint, canvas); | |||
| 1309 | return colrv1_traverse_paint(canvas, palette, foregroundColor, | |||
| 1310 | face, paint.u.skew.paint, activePaints); | |||
| 1311 | case FT_COLR_PAINTFORMAT_COMPOSITE: { | |||
| 1312 | SkAutoCanvasRestore acr(canvas, false); | |||
| 1313 | canvas->saveLayer(nullptr, nullptr); | |||
| 1314 | if (!colrv1_traverse_paint(canvas, palette, foregroundColor, | |||
| 1315 | face, paint.u.composite.backdrop_paint, activePaints)) { | |||
| 1316 | return false; | |||
| 1317 | } | |||
| 1318 | SkPaint blendModePaint; | |||
| 1319 | blendModePaint.setBlendMode(ToSkBlendMode(paint.u.composite.composite_mode)); | |||
| 1320 | canvas->saveLayer(nullptr, &blendModePaint); | |||
| 1321 | return colrv1_traverse_paint(canvas, palette, foregroundColor, | |||
| 1322 | face, paint.u.composite.source_paint, activePaints); | |||
| 1323 | } | |||
| 1324 | case FT_COLR_PAINTFORMAT_SOLID: | |||
| 1325 | case FT_COLR_PAINTFORMAT_LINEAR_GRADIENT: | |||
| 1326 | case FT_COLR_PAINTFORMAT_RADIAL_GRADIENT: | |||
| 1327 | case FT_COLR_PAINTFORMAT_SWEEP_GRADIENT: { | |||
| 1328 | return colrv1_draw_paint(canvas, palette, foregroundColor, face, paint); | |||
| 1329 | } | |||
| 1330 | default: | |||
| 1331 | SkASSERT(false)static_cast<void>( __builtin_expect(static_cast<bool >(false), 1) ? static_cast<void>(0) : []{ do { if (sk_abort_is_enabled ()) { do { SkDebugf("%s:%d" ": fatal error: \"" "check(%s)" "\"\n" , "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1331, "false"); ; sk_abort_no_print(); } while (false); } } while(false); }() ); | |||
| 1332 | return false; | |||
| 1333 | } | |||
| 1334 | SkUNREACHABLE__builtin_trap(); | |||
| 1335 | } | |||
| 1336 | ||||
| 1337 | SkPath GetClipBoxPath(FT_Face face, SkGlyphID glyphId, bool untransformed) { | |||
| 1338 | SkPath resultPath; | |||
| 1339 | SkUniqueFTSize unscaledFtSize = nullptr; | |||
| 1340 | FT_Size oldSize = face->size; | |||
| 1341 | FT_Matrix oldTransform; | |||
| 1342 | FT_Vector oldDelta; | |||
| 1343 | FT_Error err = 0; | |||
| 1344 | ||||
| 1345 | if (untransformed) { | |||
| 1346 | unscaledFtSize.reset( | |||
| 1347 | [face]() -> FT_Size { | |||
| 1348 | FT_Size size; | |||
| 1349 | FT_Error err = FT_New_Size(face, &size); | |||
| 1350 | if (err != 0) { | |||
| 1351 | SK_TRACEFTR(err,SkDebugf("%s:%d:1: error: 0x%x '%s' " "FT_New_Size(%s) failed in generateFacePathStaticCOLRv1." "\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1353, (uint32_t)err, SkTraceFtrGetError((int)(err)), face-> family_name) | |||
| 1352 | "FT_New_Size(%s) failed in generateFacePathStaticCOLRv1.",SkDebugf("%s:%d:1: error: 0x%x '%s' " "FT_New_Size(%s) failed in generateFacePathStaticCOLRv1." "\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1353, (uint32_t)err, SkTraceFtrGetError((int)(err)), face-> family_name) | |||
| 1353 | face->family_name)SkDebugf("%s:%d:1: error: 0x%x '%s' " "FT_New_Size(%s) failed in generateFacePathStaticCOLRv1." "\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1353, (uint32_t)err, SkTraceFtrGetError((int)(err)), face-> family_name); | |||
| 1354 | return nullptr; | |||
| 1355 | } | |||
| 1356 | return size; | |||
| 1357 | }()); | |||
| 1358 | if (!unscaledFtSize) { | |||
| 1359 | return resultPath; | |||
| 1360 | } | |||
| 1361 | ||||
| 1362 | err = FT_Activate_Size(unscaledFtSize.get()); | |||
| 1363 | if (err != 0) { | |||
| 1364 | return resultPath; | |||
| 1365 | } | |||
| 1366 | ||||
| 1367 | err = FT_Set_Char_Size(face, SkIntToFDot6(face->units_per_EM), 0, 0, 0); | |||
| 1368 | if (err != 0) { | |||
| 1369 | return resultPath; | |||
| 1370 | } | |||
| 1371 | ||||
| 1372 | FT_Get_Transform(face, &oldTransform, &oldDelta); | |||
| 1373 | FT_Set_Transform(face, nullptr, nullptr); | |||
| 1374 | } | |||
| 1375 | ||||
| 1376 | FT_ClipBox colrGlyphClipBox; | |||
| 1377 | if (FT_Get_Color_Glyph_ClipBox(face, glyphId, &colrGlyphClipBox)) { | |||
| 1378 | resultPath = SkPath::Polygon({{{ SkFDot6ToScalar(colrGlyphClipBox.bottom_left.x)((float)(colrGlyphClipBox.bottom_left.x) * 0.015625f), | |||
| 1379 | -SkFDot6ToScalar(colrGlyphClipBox.bottom_left.y)((float)(colrGlyphClipBox.bottom_left.y) * 0.015625f)}, | |||
| 1380 | { SkFDot6ToScalar(colrGlyphClipBox.top_left.x)((float)(colrGlyphClipBox.top_left.x) * 0.015625f), | |||
| 1381 | -SkFDot6ToScalar(colrGlyphClipBox.top_left.y)((float)(colrGlyphClipBox.top_left.y) * 0.015625f)}, | |||
| 1382 | { SkFDot6ToScalar(colrGlyphClipBox.top_right.x)((float)(colrGlyphClipBox.top_right.x) * 0.015625f), | |||
| 1383 | -SkFDot6ToScalar(colrGlyphClipBox.top_right.y)((float)(colrGlyphClipBox.top_right.y) * 0.015625f)}, | |||
| 1384 | { SkFDot6ToScalar(colrGlyphClipBox.bottom_right.x)((float)(colrGlyphClipBox.bottom_right.x) * 0.015625f), | |||
| 1385 | -SkFDot6ToScalar(colrGlyphClipBox.bottom_right.y)((float)(colrGlyphClipBox.bottom_right.y) * 0.015625f)}}}, | |||
| 1386 | true); | |||
| 1387 | } | |||
| 1388 | ||||
| 1389 | if (untransformed) { | |||
| 1390 | err = FT_Activate_Size(oldSize); | |||
| 1391 | if (err != 0) { | |||
| 1392 | return resultPath; | |||
| 1393 | } | |||
| 1394 | FT_Set_Transform(face, &oldTransform, &oldDelta); | |||
| 1395 | } | |||
| 1396 | ||||
| 1397 | return resultPath; | |||
| 1398 | } | |||
| 1399 | ||||
| 1400 | bool colrv1_start_glyph(SkCanvas* canvas, | |||
| 1401 | const SkSpan<SkColor>& palette, | |||
| 1402 | SkColor foregroundColor, | |||
| 1403 | FT_Face face, | |||
| 1404 | uint16_t glyphId, | |||
| 1405 | FT_Color_Root_Transform rootTransform, | |||
| 1406 | VisitedSet* activePaints) { | |||
| 1407 | FT_OpaquePaint opaquePaint{nullptr, 1}; | |||
| 1408 | if (!FT_Get_Color_Glyph_Paint(face, glyphId, rootTransform, &opaquePaint)) { | |||
| 1409 | return false; | |||
| 1410 | } | |||
| 1411 | ||||
| 1412 | bool untransformed = rootTransform == FT_COLOR_NO_ROOT_TRANSFORM; | |||
| 1413 | SkPath clipBoxPath = GetClipBoxPath(face, glyphId, untransformed); | |||
| 1414 | if (!clipBoxPath.isEmpty()) { | |||
| 1415 | canvas->clipPath(clipBoxPath, true); | |||
| 1416 | } | |||
| 1417 | ||||
| 1418 | if (!colrv1_traverse_paint(canvas, palette, foregroundColor, | |||
| 1419 | face, opaquePaint, activePaints)) { | |||
| 1420 | return false; | |||
| 1421 | } | |||
| 1422 | ||||
| 1423 | return true; | |||
| 1424 | } | |||
| 1425 | ||||
| 1426 | bool colrv1_start_glyph_bounds(SkMatrix *ctm, | |||
| 1427 | SkRect* bounds, | |||
| 1428 | FT_Face face, | |||
| 1429 | SkGlyphID glyphId, | |||
| 1430 | FT_Color_Root_Transform rootTransform, | |||
| 1431 | VisitedSet* activePaints); | |||
| 1432 | ||||
| 1433 | bool colrv1_traverse_paint_bounds(SkMatrix* ctm, | |||
| 1434 | SkRect* bounds, | |||
| 1435 | FT_Face face, | |||
| 1436 | FT_OpaquePaint opaquePaint, | |||
| 1437 | VisitedSet* activePaints) { | |||
| 1438 | // Cycle detection, see section "5.7.11.1.9 Color glyphs as a directed acyclic graph". | |||
| 1439 | if (activePaints->contains(opaquePaint)) { | |||
| 1440 | return false; | |||
| 1441 | } | |||
| 1442 | ||||
| 1443 | activePaints->add(opaquePaint); | |||
| 1444 | SK_AT_SCOPE_EXIT(activePaints->remove(opaquePaint))SkScopeExit at_scope_exit_1444([&]() { activePaints->remove (opaquePaint); }); | |||
| 1445 | ||||
| 1446 | FT_COLR_Paint paint; | |||
| 1447 | if (!FT_Get_Paint(face, opaquePaint, &paint)) { | |||
| 1448 | return false; | |||
| 1449 | } | |||
| 1450 | ||||
| 1451 | SkMatrix restoreMatrix = *ctm; | |||
| 1452 | SK_AT_SCOPE_EXIT(*ctm = restoreMatrix)SkScopeExit at_scope_exit_1452([&]() { *ctm = restoreMatrix ; }); | |||
| 1453 | ||||
| 1454 | switch (paint.format) { | |||
| 1455 | case FT_COLR_PAINTFORMAT_COLR_LAYERS: { | |||
| 1456 | FT_LayerIterator& layerIterator = paint.u.colr_layers.layer_iterator; | |||
| 1457 | FT_OpaquePaint layerPaint{nullptr, 1}; | |||
| 1458 | while (FT_Get_Paint_Layers(face, &layerIterator, &layerPaint)) { | |||
| 1459 | if (!colrv1_traverse_paint_bounds(ctm, bounds, face, layerPaint, activePaints)) { | |||
| 1460 | return false; | |||
| 1461 | } | |||
| 1462 | } | |||
| 1463 | return true; | |||
| 1464 | } | |||
| 1465 | case FT_COLR_PAINTFORMAT_GLYPH: { | |||
| 1466 | auto path = generateFacePathCOLRv1(face, paint.u.glyph.glyphID, ctm); | |||
| 1467 | if (!path) { | |||
| 1468 | return false; | |||
| 1469 | } | |||
| 1470 | bounds->join(path->getBounds()); | |||
| 1471 | return true; | |||
| 1472 | } | |||
| 1473 | case FT_COLR_PAINTFORMAT_COLR_GLYPH: { | |||
| 1474 | FT_UInt glyphID = paint.u.colr_glyph.glyphID; | |||
| 1475 | return colrv1_start_glyph_bounds(ctm, bounds, face, glyphID, FT_COLOR_NO_ROOT_TRANSFORM, | |||
| 1476 | activePaints); | |||
| 1477 | } | |||
| 1478 | case FT_COLR_PAINTFORMAT_TRANSFORM: { | |||
| 1479 | SkMatrix transformMatrix; | |||
| 1480 | colrv1_transform(face, paint, nullptr, &transformMatrix); | |||
| 1481 | ctm->preConcat(transformMatrix); | |||
| 1482 | FT_OpaquePaint& transformPaint = paint.u.transform.paint; | |||
| 1483 | return colrv1_traverse_paint_bounds(ctm, bounds, face, transformPaint, activePaints); | |||
| 1484 | } | |||
| 1485 | case FT_COLR_PAINTFORMAT_TRANSLATE: { | |||
| 1486 | SkMatrix transformMatrix; | |||
| 1487 | colrv1_transform(face, paint, nullptr, &transformMatrix); | |||
| 1488 | ctm->preConcat(transformMatrix); | |||
| 1489 | FT_OpaquePaint& translatePaint = paint.u.translate.paint; | |||
| 1490 | return colrv1_traverse_paint_bounds(ctm, bounds, face, translatePaint, activePaints); | |||
| 1491 | } | |||
| 1492 | case FT_COLR_PAINTFORMAT_SCALE: { | |||
| 1493 | SkMatrix transformMatrix; | |||
| 1494 | colrv1_transform(face, paint, nullptr, &transformMatrix); | |||
| 1495 | ctm->preConcat(transformMatrix); | |||
| 1496 | FT_OpaquePaint& scalePaint = paint.u.scale.paint; | |||
| 1497 | return colrv1_traverse_paint_bounds(ctm, bounds, face, scalePaint, activePaints); | |||
| 1498 | } | |||
| 1499 | case FT_COLR_PAINTFORMAT_ROTATE: { | |||
| 1500 | SkMatrix transformMatrix; | |||
| 1501 | colrv1_transform(face, paint, nullptr, &transformMatrix); | |||
| 1502 | ctm->preConcat(transformMatrix); | |||
| 1503 | FT_OpaquePaint& rotatePaint = paint.u.rotate.paint; | |||
| 1504 | return colrv1_traverse_paint_bounds(ctm, bounds, face, rotatePaint, activePaints); | |||
| 1505 | } | |||
| 1506 | case FT_COLR_PAINTFORMAT_SKEW: { | |||
| 1507 | SkMatrix transformMatrix; | |||
| 1508 | colrv1_transform(face, paint, nullptr, &transformMatrix); | |||
| 1509 | ctm->preConcat(transformMatrix); | |||
| 1510 | FT_OpaquePaint& skewPaint = paint.u.skew.paint; | |||
| 1511 | return colrv1_traverse_paint_bounds(ctm, bounds, face, skewPaint, activePaints); | |||
| 1512 | } | |||
| 1513 | case FT_COLR_PAINTFORMAT_COMPOSITE: { | |||
| 1514 | FT_OpaquePaint& backdropPaint = paint.u.composite.backdrop_paint; | |||
| 1515 | FT_OpaquePaint& sourcePaint = paint.u.composite. source_paint; | |||
| 1516 | return colrv1_traverse_paint_bounds(ctm, bounds, face, backdropPaint, activePaints) && | |||
| 1517 | colrv1_traverse_paint_bounds(ctm, bounds, face, sourcePaint, activePaints); | |||
| 1518 | } | |||
| 1519 | case FT_COLR_PAINTFORMAT_SOLID: | |||
| 1520 | case FT_COLR_PAINTFORMAT_LINEAR_GRADIENT: | |||
| 1521 | case FT_COLR_PAINTFORMAT_RADIAL_GRADIENT: | |||
| 1522 | case FT_COLR_PAINTFORMAT_SWEEP_GRADIENT: { | |||
| 1523 | return true; | |||
| 1524 | } | |||
| 1525 | default: | |||
| 1526 | SkASSERT(false)static_cast<void>( __builtin_expect(static_cast<bool >(false), 1) ? static_cast<void>(0) : []{ do { if (sk_abort_is_enabled ()) { do { SkDebugf("%s:%d" ": fatal error: \"" "check(%s)" "\"\n" , "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1526, "false"); ; sk_abort_no_print(); } while (false); } } while(false); }() ); | |||
| 1527 | return false; | |||
| 1528 | } | |||
| 1529 | SkUNREACHABLE__builtin_trap(); | |||
| 1530 | } | |||
| 1531 | ||||
| 1532 | ||||
| 1533 | bool colrv1_start_glyph_bounds(SkMatrix *ctm, | |||
| 1534 | SkRect* bounds, | |||
| 1535 | FT_Face face, | |||
| 1536 | uint16_t glyphId, | |||
| 1537 | FT_Color_Root_Transform rootTransform, | |||
| 1538 | VisitedSet* activePaints) { | |||
| 1539 | FT_OpaquePaint opaquePaint{nullptr, 1}; | |||
| 1540 | return FT_Get_Color_Glyph_Paint(face, glyphId, rootTransform, &opaquePaint) && | |||
| 1541 | colrv1_traverse_paint_bounds(ctm, bounds, face, opaquePaint, activePaints); | |||
| 1542 | } | |||
| 1543 | #endif // TT_SUPPORT_COLRV1 | |||
| 1544 | ||||
| 1545 | } // namespace | |||
| 1546 | ||||
| 1547 | //////////////// | |||
| 1548 | ||||
| 1549 | void SkScalerContextFTUtils::init(SkColor fgColor, SkScalerContext::Flags flags) { | |||
| 1550 | fForegroundColor = fgColor; | |||
| 1551 | fFlags = flags; | |||
| 1552 | } | |||
| 1553 | ||||
| 1554 | #ifdef TT_SUPPORT_COLRV1 | |||
| 1555 | bool SkScalerContextFTUtils::drawCOLRv1Glyph(FT_Face face, const SkGlyph& glyph, uint32_t loadGlyphFlags, | |||
| 1556 | SkSpan<SkColor> palette, SkCanvas* canvas) const { | |||
| 1557 | if (this->isSubpixel()) { | |||
| 1558 | canvas->translate(SkFixedToScalar(glyph.getSubXFixed())((glyph.getSubXFixed()) * 1.52587890625e-5f), | |||
| 1559 | SkFixedToScalar(glyph.getSubYFixed())((glyph.getSubYFixed()) * 1.52587890625e-5f)); | |||
| 1560 | } | |||
| 1561 | ||||
| 1562 | VisitedSet activePaints; | |||
| 1563 | return colrv1_start_glyph(canvas, palette, fForegroundColor, | |||
| 1564 | face, glyph.getGlyphID(), | |||
| 1565 | FT_COLOR_INCLUDE_ROOT_TRANSFORM, &activePaints); | |||
| 1566 | } | |||
| 1567 | #endif // TT_SUPPORT_COLRV1 | |||
| 1568 | ||||
| 1569 | #ifdef FT_COLOR_H<freetype/ftcolor.h> | |||
| 1570 | bool SkScalerContextFTUtils::drawCOLRv0Glyph(FT_Face face, const SkGlyph& glyph, LoadGlyphFlags flags, | |||
| 1571 | SkSpan<SkColor> palette, SkCanvas* canvas) const { | |||
| 1572 | if (this->isSubpixel()) { | |||
| 1573 | canvas->translate(SkFixedToScalar(glyph.getSubXFixed())((glyph.getSubXFixed()) * 1.52587890625e-5f), | |||
| 1574 | SkFixedToScalar(glyph.getSubYFixed())((glyph.getSubYFixed()) * 1.52587890625e-5f)); | |||
| 1575 | } | |||
| 1576 | ||||
| 1577 | bool haveLayers = false; | |||
| 1578 | FT_LayerIterator layerIterator; | |||
| 1579 | layerIterator.p = nullptr; | |||
| 1580 | FT_UInt layerGlyphIndex = 0; | |||
| 1581 | FT_UInt layerColorIndex = 0; | |||
| 1582 | SkPaint paint; | |||
| 1583 | paint.setAntiAlias(!(flags & FT_LOAD_TARGET_MONO( static_cast<FT_Int32>((FT_RENDER_MODE_MONO) & 15) << 16 ))); | |||
| 1584 | while (FT_Get_Color_Glyph_Layer(face, glyph.getGlyphID(), &layerGlyphIndex, | |||
| 1585 | &layerColorIndex, &layerIterator)) { | |||
| 1586 | haveLayers = true; | |||
| 1587 | if (layerColorIndex == 0xFFFF) { | |||
| 1588 | paint.setColor(fForegroundColor); | |||
| 1589 | } else { | |||
| 1590 | paint.setColor(palette[layerColorIndex]); | |||
| 1591 | } | |||
| 1592 | SkPathBuilder builder; | |||
| 1593 | if (this->generateFacePath(face, layerGlyphIndex, flags, &builder)) { | |||
| 1594 | canvas->drawPath(builder.detach(), paint); | |||
| 1595 | } | |||
| 1596 | } | |||
| 1597 | SkASSERTF(haveLayers, "Could not get COLRv0 layers from '%s'.", face->family_name)static_cast<void>( __builtin_expect(static_cast<bool >(haveLayers), 1) ? static_cast<void>(0) : [&]{ do { if (sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "assertf(%s): " "Could not get COLRv0 layers from '%s'." "\"\n" , "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1597, "haveLayers", face->family_name); ; sk_abort_no_print (); } while (false); } } while(false); }() ); | |||
| 1598 | return haveLayers; | |||
| 1599 | } | |||
| 1600 | #endif // FT_COLOR_H | |||
| 1601 | ||||
| 1602 | #if defined(FT_CONFIG_OPTION_SVG) | |||
| 1603 | bool SkScalerContextFTUtils::drawSVGGlyph(FT_Face face, const SkGlyph& glyph, LoadGlyphFlags flags, | |||
| 1604 | SkSpan<SkColor> palette, SkCanvas* canvas) const { | |||
| 1605 | SkASSERT(face->glyph->format == FT_GLYPH_FORMAT_SVG)static_cast<void>( __builtin_expect(static_cast<bool >(face->glyph->format == FT_GLYPH_FORMAT_SVG), 1) ? static_cast <void>(0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf ("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1605, "face->glyph->format == FT_GLYPH_FORMAT_SVG"); ; sk_abort_no_print(); } while (false); } } while(false); }() ); | |||
| 1606 | ||||
| 1607 | FT_SVG_Document ftSvg = (FT_SVG_Document)face->glyph->other; | |||
| 1608 | SkMatrix m; | |||
| 1609 | FT_Matrix ftMatrix = ftSvg->transform; | |||
| 1610 | FT_Vector ftOffset = ftSvg->delta; | |||
| 1611 | m.setAll( | |||
| 1612 | SkFixedToFloat(ftMatrix.xx)((ftMatrix.xx) * 1.52587890625e-5f), -SkFixedToFloat(ftMatrix.xy)((ftMatrix.xy) * 1.52587890625e-5f), SkFixedToFloat(ftOffset.x)((ftOffset.x) * 1.52587890625e-5f), | |||
| 1613 | -SkFixedToFloat(ftMatrix.yx)((ftMatrix.yx) * 1.52587890625e-5f), SkFixedToFloat(ftMatrix.yy)((ftMatrix.yy) * 1.52587890625e-5f), -SkFixedToFloat(ftOffset.y)((ftOffset.y) * 1.52587890625e-5f), | |||
| 1614 | 0 , 0 , 1 ); | |||
| 1615 | m.postScale(SkFixedToFloat(ftSvg->metrics.x_scale)((ftSvg->metrics.x_scale) * 1.52587890625e-5f) / 64.0f, | |||
| 1616 | SkFixedToFloat(ftSvg->metrics.y_scale)((ftSvg->metrics.y_scale) * 1.52587890625e-5f) / 64.0f); | |||
| 1617 | if (this->isSubpixel()) { | |||
| 1618 | m.postTranslate(SkFixedToScalar(glyph.getSubXFixed())((glyph.getSubXFixed()) * 1.52587890625e-5f), | |||
| 1619 | SkFixedToScalar(glyph.getSubYFixed())((glyph.getSubYFixed()) * 1.52587890625e-5f)); | |||
| 1620 | } | |||
| 1621 | canvas->concat(m); | |||
| 1622 | ||||
| 1623 | SkGraphics::OpenTypeSVGDecoderFactory svgFactory = SkGraphics::GetOpenTypeSVGDecoderFactory(); | |||
| 1624 | if (!svgFactory) { | |||
| 1625 | return false; | |||
| 1626 | } | |||
| 1627 | auto svgDecoder = svgFactory(ftSvg->svg_document, ftSvg->svg_document_length); | |||
| 1628 | if (!svgDecoder) { | |||
| 1629 | return false; | |||
| 1630 | } | |||
| 1631 | return svgDecoder->render(*canvas, ftSvg->units_per_EM, glyph.getGlyphID(), | |||
| 1632 | fForegroundColor, palette); | |||
| 1633 | } | |||
| 1634 | #endif // FT_CONFIG_OPTION_SVG | |||
| 1635 | ||||
| 1636 | void SkScalerContextFTUtils::generateGlyphImage(FT_Face face, const SkGlyph& glyph, void* imageBuffer, | |||
| 1637 | const SkMatrix& bitmapTransform, | |||
| 1638 | const SkMaskGamma::PreBlend& preBlend) const { | |||
| 1639 | switch ( face->glyph->format ) { | |||
| ||||
| 1640 | case FT_GLYPH_FORMAT_OUTLINE: { | |||
| 1641 | FT_Outline* outline = &face->glyph->outline; | |||
| 1642 | ||||
| 1643 | int dx = 0, dy = 0; | |||
| 1644 | if (this->isSubpixel()) { | |||
| 1645 | dx = SkFixedToFDot6(glyph.getSubXFixed())((glyph.getSubXFixed()) >> 10); | |||
| 1646 | dy = SkFixedToFDot6(glyph.getSubYFixed())((glyph.getSubYFixed()) >> 10); | |||
| 1647 | // negate dy since freetype-y-goes-up and skia-y-goes-down | |||
| 1648 | dy = -dy; | |||
| 1649 | } | |||
| 1650 | ||||
| 1651 | memset(imageBuffer, 0, glyph.rowBytes() * glyph.height()); | |||
| 1652 | ||||
| 1653 | if (SkMask::kLCD16_Format == glyph.maskFormat()) { | |||
| 1654 | const bool doBGR = SkToBool(fFlags & SkScalerContext::kLCD_BGROrder_Flag); | |||
| 1655 | const bool doVert = SkToBool(fFlags & SkScalerContext::kLCD_Vertical_Flag); | |||
| 1656 | ||||
| 1657 | FT_Outline_Translate(outline, dx, dy); | |||
| 1658 | FT_Error err = FT_Render_Glyph(face->glyph, doVert ? FT_RENDER_MODE_LCD_V : | |||
| 1659 | FT_RENDER_MODE_LCD); | |||
| 1660 | if (err) { | |||
| 1661 | SK_TRACEFTR(err, "Could not render glyph %p.", face->glyph)SkDebugf("%s:%d:1: error: 0x%x '%s' " "Could not render glyph %p." "\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1661, (uint32_t)err, SkTraceFtrGetError((int)(err)), face-> glyph); | |||
| 1662 | return; | |||
| 1663 | } | |||
| 1664 | ||||
| 1665 | SkMaskBuilder mask(static_cast<uint8_t*>(imageBuffer), | |||
| 1666 | glyph.iRect(), glyph.rowBytes(), glyph.maskFormat()); | |||
| 1667 | ||||
| 1668 | if constexpr (kSkShowTextBlitCoverage) { | |||
| 1669 | memset(mask.image(), 0x80, mask.fBounds.height() * mask.fRowBytes); | |||
| 1670 | } | |||
| 1671 | FT_GlyphSlotRec& ftGlyph = *face->glyph; | |||
| 1672 | ||||
| 1673 | if (!SkIRect::Intersects(mask.fBounds, | |||
| 1674 | SkIRect::MakeXYWH( ftGlyph.bitmap_left, | |||
| 1675 | -ftGlyph.bitmap_top, | |||
| 1676 | ftGlyph.bitmap.width, | |||
| 1677 | ftGlyph.bitmap.rows))) | |||
| 1678 | { | |||
| 1679 | return; | |||
| 1680 | } | |||
| 1681 | ||||
| 1682 | // If the FT_Bitmap extent is larger, discard bits of the bitmap outside the mask. | |||
| 1683 | // If the SkMask extent is larger, shrink mask to fit bitmap (clearing discarded). | |||
| 1684 | unsigned char* origBuffer = ftGlyph.bitmap.buffer; | |||
| 1685 | // First align the top left (origin). | |||
| 1686 | if (-ftGlyph.bitmap_top < mask.fBounds.fTop) { | |||
| 1687 | int32_t topDiff = mask.fBounds.fTop - (-ftGlyph.bitmap_top); | |||
| 1688 | ftGlyph.bitmap.buffer += ftGlyph.bitmap.pitch * topDiff; | |||
| 1689 | ftGlyph.bitmap.rows -= topDiff; | |||
| 1690 | ftGlyph.bitmap_top = -mask.fBounds.fTop; | |||
| 1691 | } | |||
| 1692 | if (ftGlyph.bitmap_left < mask.fBounds.fLeft) { | |||
| 1693 | int32_t leftDiff = mask.fBounds.fLeft - ftGlyph.bitmap_left; | |||
| 1694 | ftGlyph.bitmap.buffer += leftDiff; | |||
| 1695 | ftGlyph.bitmap.width -= leftDiff; | |||
| 1696 | ftGlyph.bitmap_left = mask.fBounds.fLeft; | |||
| 1697 | } | |||
| 1698 | if (mask.fBounds.fTop < -ftGlyph.bitmap_top) { | |||
| 1699 | mask.image() += mask.fRowBytes * (-ftGlyph.bitmap_top - mask.fBounds.fTop); | |||
| 1700 | mask.bounds().fTop = -ftGlyph.bitmap_top; | |||
| 1701 | } | |||
| 1702 | if (mask.fBounds.fLeft < ftGlyph.bitmap_left) { | |||
| 1703 | mask.image() += sizeof(uint16_t) * (ftGlyph.bitmap_left - mask.fBounds.fLeft); | |||
| 1704 | mask.bounds().fLeft = ftGlyph.bitmap_left; | |||
| 1705 | } | |||
| 1706 | // Origins aligned, clean up the width and height. | |||
| 1707 | int ftVertScale = (doVert ? 3 : 1); | |||
| 1708 | int ftHoriScale = (doVert ? 1 : 3); | |||
| 1709 | if (mask.fBounds.height() * ftVertScale < SkToInt(ftGlyph.bitmap.rows)) { | |||
| 1710 | ftGlyph.bitmap.rows = mask.fBounds.height() * ftVertScale; | |||
| 1711 | } | |||
| 1712 | if (mask.fBounds.width() * ftHoriScale < SkToInt(ftGlyph.bitmap.width)) { | |||
| 1713 | ftGlyph.bitmap.width = mask.fBounds.width() * ftHoriScale; | |||
| 1714 | } | |||
| 1715 | if (SkToInt(ftGlyph.bitmap.rows) < mask.fBounds.height() * ftVertScale) { | |||
| 1716 | mask.bounds().fBottom = mask.fBounds.fTop + ftGlyph.bitmap.rows / ftVertScale; | |||
| 1717 | } | |||
| 1718 | if (SkToInt(ftGlyph.bitmap.width) < mask.fBounds.width() * ftHoriScale) { | |||
| 1719 | mask.bounds().fRight = mask.fBounds.fLeft + ftGlyph.bitmap.width / ftHoriScale; | |||
| 1720 | } | |||
| 1721 | if (preBlend.isApplicable()) { | |||
| 1722 | copyFT2LCD16<true>(ftGlyph.bitmap, &mask, doBGR, | |||
| 1723 | preBlend.fR, preBlend.fG, preBlend.fB); | |||
| 1724 | } else { | |||
| 1725 | copyFT2LCD16<false>(ftGlyph.bitmap, &mask, doBGR, | |||
| 1726 | preBlend.fR, preBlend.fG, preBlend.fB); | |||
| 1727 | } | |||
| 1728 | // Restore the buffer pointer so FreeType can properly free it. | |||
| 1729 | ftGlyph.bitmap.buffer = origBuffer; | |||
| 1730 | } else { | |||
| 1731 | FT_BBox bbox; | |||
| 1732 | FT_Bitmap target; | |||
| 1733 | FT_Outline_Get_CBox(outline, &bbox); | |||
| 1734 | /* | |||
| 1735 | what we really want to do for subpixel is | |||
| 1736 | offset(dx, dy) | |||
| 1737 | compute_bounds | |||
| 1738 | offset(bbox & !63) | |||
| 1739 | but that is two calls to offset, so we do the following, which | |||
| 1740 | achieves the same thing with only one offset call. | |||
| 1741 | */ | |||
| 1742 | FT_Outline_Translate(outline, dx - ((bbox.xMin + dx) & ~63), | |||
| 1743 | dy - ((bbox.yMin + dy) & ~63)); | |||
| 1744 | ||||
| 1745 | target.width = glyph.width(); | |||
| 1746 | target.rows = glyph.height(); | |||
| 1747 | target.pitch = glyph.rowBytes(); | |||
| 1748 | target.buffer = static_cast<uint8_t*>(imageBuffer); | |||
| 1749 | target.pixel_mode = compute_pixel_mode(glyph.maskFormat()); | |||
| 1750 | target.num_grays = 256; | |||
| 1751 | ||||
| 1752 | FT_Outline_Get_Bitmap(face->glyph->library, outline, &target); | |||
| 1753 | if constexpr (kSkShowTextBlitCoverage) { | |||
| 1754 | if (glyph.maskFormat() == SkMask::kBW_Format) { | |||
| 1755 | for (unsigned y = 0; y < target.rows; y += 2) { | |||
| 1756 | for (unsigned x = (y & 0x2); x < target.width; x+=4) { | |||
| 1757 | uint8_t& b = target.buffer[(target.pitch * y) + (x >> 3)]; | |||
| 1758 | b = b ^ (1 << (0x7 - (x & 0x7))); | |||
| 1759 | } | |||
| 1760 | } | |||
| 1761 | } else { | |||
| 1762 | for (unsigned y = 0; y < target.rows; ++y) { | |||
| 1763 | for (unsigned x = 0; x < target.width; ++x) { | |||
| 1764 | uint8_t& a = target.buffer[(target.pitch * y) + x]; | |||
| 1765 | a = std::max<uint8_t>(a, 0x20); | |||
| 1766 | } | |||
| 1767 | } | |||
| 1768 | } | |||
| 1769 | } | |||
| 1770 | } | |||
| 1771 | } break; | |||
| 1772 | ||||
| 1773 | case FT_GLYPH_FORMAT_BITMAP: { | |||
| 1774 | FT_Pixel_Mode pixel_mode = static_cast<FT_Pixel_Mode>(face->glyph->bitmap.pixel_mode); | |||
| 1775 | SkMask::Format maskFormat = glyph.maskFormat(); | |||
| 1776 | ||||
| 1777 | // Assume that the other formats do not exist. | |||
| 1778 | SkASSERT(FT_PIXEL_MODE_MONO == pixel_mode ||static_cast<void>( __builtin_expect(static_cast<bool >(FT_PIXEL_MODE_MONO == pixel_mode || FT_PIXEL_MODE_GRAY == pixel_mode || FT_PIXEL_MODE_BGRA == pixel_mode), 1) ? static_cast <void>(0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf ("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1780, "FT_PIXEL_MODE_MONO == pixel_mode || FT_PIXEL_MODE_GRAY == pixel_mode || FT_PIXEL_MODE_BGRA == pixel_mode" ); ; sk_abort_no_print(); } while (false); } } while(false); } () ) | |||
| 1779 | FT_PIXEL_MODE_GRAY == pixel_mode ||static_cast<void>( __builtin_expect(static_cast<bool >(FT_PIXEL_MODE_MONO == pixel_mode || FT_PIXEL_MODE_GRAY == pixel_mode || FT_PIXEL_MODE_BGRA == pixel_mode), 1) ? static_cast <void>(0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf ("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1780, "FT_PIXEL_MODE_MONO == pixel_mode || FT_PIXEL_MODE_GRAY == pixel_mode || FT_PIXEL_MODE_BGRA == pixel_mode" ); ; sk_abort_no_print(); } while (false); } } while(false); } () ) | |||
| 1780 | FT_PIXEL_MODE_BGRA == pixel_mode)static_cast<void>( __builtin_expect(static_cast<bool >(FT_PIXEL_MODE_MONO == pixel_mode || FT_PIXEL_MODE_GRAY == pixel_mode || FT_PIXEL_MODE_BGRA == pixel_mode), 1) ? static_cast <void>(0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf ("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1780, "FT_PIXEL_MODE_MONO == pixel_mode || FT_PIXEL_MODE_GRAY == pixel_mode || FT_PIXEL_MODE_BGRA == pixel_mode" ); ; sk_abort_no_print(); } while (false); } } while(false); } () ); | |||
| 1781 | ||||
| 1782 | // These are the only formats this ScalerContext should request. | |||
| 1783 | SkASSERT(SkMask::kBW_Format == maskFormat ||static_cast<void>( __builtin_expect(static_cast<bool >(SkMask::kBW_Format == maskFormat || SkMask::kA8_Format == maskFormat || SkMask::kARGB32_Format == maskFormat || SkMask ::kLCD16_Format == maskFormat), 1) ? static_cast<void>( 0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1786, "SkMask::kBW_Format == maskFormat || SkMask::kA8_Format == maskFormat || SkMask::kARGB32_Format == maskFormat || SkMask::kLCD16_Format == maskFormat" ); ; sk_abort_no_print(); } while (false); } } while(false); } () ) | |||
| 1784 | SkMask::kA8_Format == maskFormat ||static_cast<void>( __builtin_expect(static_cast<bool >(SkMask::kBW_Format == maskFormat || SkMask::kA8_Format == maskFormat || SkMask::kARGB32_Format == maskFormat || SkMask ::kLCD16_Format == maskFormat), 1) ? static_cast<void>( 0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1786, "SkMask::kBW_Format == maskFormat || SkMask::kA8_Format == maskFormat || SkMask::kARGB32_Format == maskFormat || SkMask::kLCD16_Format == maskFormat" ); ; sk_abort_no_print(); } while (false); } } while(false); } () ) | |||
| 1785 | SkMask::kARGB32_Format == maskFormat ||static_cast<void>( __builtin_expect(static_cast<bool >(SkMask::kBW_Format == maskFormat || SkMask::kA8_Format == maskFormat || SkMask::kARGB32_Format == maskFormat || SkMask ::kLCD16_Format == maskFormat), 1) ? static_cast<void>( 0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1786, "SkMask::kBW_Format == maskFormat || SkMask::kA8_Format == maskFormat || SkMask::kARGB32_Format == maskFormat || SkMask::kLCD16_Format == maskFormat" ); ; sk_abort_no_print(); } while (false); } } while(false); } () ) | |||
| 1786 | SkMask::kLCD16_Format == maskFormat)static_cast<void>( __builtin_expect(static_cast<bool >(SkMask::kBW_Format == maskFormat || SkMask::kA8_Format == maskFormat || SkMask::kARGB32_Format == maskFormat || SkMask ::kLCD16_Format == maskFormat), 1) ? static_cast<void>( 0) : []{ do { if (sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "check(%s)" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1786, "SkMask::kBW_Format == maskFormat || SkMask::kA8_Format == maskFormat || SkMask::kARGB32_Format == maskFormat || SkMask::kLCD16_Format == maskFormat" ); ; sk_abort_no_print(); } while (false); } } while(false); } () ); | |||
| 1787 | ||||
| 1788 | // If no scaling needed, directly copy glyph bitmap. | |||
| 1789 | if (bitmapTransform.isIdentity()) { | |||
| 1790 | SkMaskBuilder dstMask = SkMaskBuilder(static_cast<uint8_t*>(imageBuffer), | |||
| 1791 | glyph.iRect(), glyph.rowBytes(), | |||
| 1792 | glyph.maskFormat()); | |||
| 1793 | copyFTBitmap(face->glyph->bitmap, &dstMask); | |||
| 1794 | break; | |||
| 1795 | } | |||
| 1796 | ||||
| 1797 | // Otherwise, scale the bitmap. | |||
| 1798 | ||||
| 1799 | // Copy the FT_Bitmap into an SkBitmap (either A8 or ARGB) | |||
| 1800 | SkBitmap unscaledBitmap; | |||
| 1801 | // TODO: mark this as sRGB when the blits will be sRGB. | |||
| 1802 | unscaledBitmap.setInfo(SkImageInfo::Make(face->glyph->bitmap.width, | |||
| 1803 | face->glyph->bitmap.rows, | |||
| 1804 | SkColorType_for_FTPixelMode(pixel_mode), | |||
| 1805 | kPremul_SkAlphaType)); | |||
| 1806 | if (!unscaledBitmap.tryAllocPixels()) { | |||
| 1807 | // TODO: set the imageBuffer to indicate "missing" | |||
| 1808 | memset(imageBuffer, 0, glyph.rowBytes() * glyph.height()); | |||
| 1809 | return; | |||
| 1810 | } | |||
| 1811 | ||||
| 1812 | SkMaskBuilder unscaledBitmapAlias( | |||
| 1813 | reinterpret_cast<uint8_t*>(unscaledBitmap.getPixels()), | |||
| 1814 | SkIRect::MakeWH(unscaledBitmap.width(), unscaledBitmap.height()), | |||
| 1815 | unscaledBitmap.rowBytes(), | |||
| 1816 | SkMaskFormat_for_SkColorType(unscaledBitmap.colorType())); | |||
| 1817 | copyFTBitmap(face->glyph->bitmap, &unscaledBitmapAlias); | |||
| 1818 | ||||
| 1819 | // Wrap the glyph's mask in a bitmap, unless the glyph's mask is BW or LCD. | |||
| 1820 | // BW requires an A8 target for resizing, which can then be down sampled. | |||
| 1821 | // LCD should use a 4x A8 target, which will then be down sampled. | |||
| 1822 | // For simplicity, LCD uses A8 and is replicated. | |||
| 1823 | int bitmapRowBytes = 0; | |||
| 1824 | if (SkMask::kBW_Format != maskFormat
| |||
| 1825 | bitmapRowBytes = glyph.rowBytes(); | |||
| 1826 | } | |||
| 1827 | SkBitmap dstBitmap; | |||
| 1828 | // TODO: mark this as sRGB when the blits will be sRGB. | |||
| 1829 | dstBitmap.setInfo(SkImageInfo::Make(glyph.width(), glyph.height(), | |||
| 1830 | SkColorType_for_SkMaskFormat(maskFormat), | |||
| 1831 | kPremul_SkAlphaType), | |||
| 1832 | bitmapRowBytes); | |||
| 1833 | if (SkMask::kBW_Format == maskFormat
| |||
| 1834 | if (!dstBitmap.tryAllocPixels()) { | |||
| 1835 | // TODO: set the fImage to indicate "missing" | |||
| 1836 | memset(imageBuffer, 0, glyph.rowBytes() * glyph.height()); | |||
| 1837 | return; | |||
| 1838 | } | |||
| 1839 | } else { | |||
| 1840 | dstBitmap.setPixels(imageBuffer); | |||
| 1841 | } | |||
| 1842 | ||||
| 1843 | // Scale unscaledBitmap into dstBitmap. | |||
| 1844 | SkCanvas canvas(dstBitmap); | |||
| 1845 | if constexpr (kSkShowTextBlitCoverage
| |||
| 1846 | canvas.clear(0x33FF0000); | |||
| 1847 | } else { | |||
| 1848 | canvas.clear(SK_ColorTRANSPARENT); | |||
| 1849 | } | |||
| 1850 | canvas.translate(-glyph.left(), -glyph.top()); | |||
| 1851 | canvas.concat(bitmapTransform); | |||
| 1852 | canvas.translate(face->glyph->bitmap_left, -face->glyph->bitmap_top); | |||
| 1853 | ||||
| 1854 | SkSamplingOptions sampling(SkFilterMode::kLinear, SkMipmapMode::kNearest); | |||
| 1855 | canvas.drawImage(unscaledBitmap.asImage().get(), 0, 0, sampling, nullptr); | |||
| 1856 | ||||
| 1857 | // If the destination is BW or LCD, convert from A8. | |||
| 1858 | if (SkMask::kBW_Format == maskFormat
| |||
| 1859 | // Copy the A8 dstBitmap into the A1 imageBuffer. | |||
| 1860 | SkMaskBuilder dstMask(static_cast<uint8_t*>(imageBuffer), | |||
| 1861 | glyph.iRect(), glyph.rowBytes(), glyph.maskFormat()); | |||
| 1862 | packA8ToA1(&dstMask, dstBitmap.getAddr8(0, 0), dstBitmap.rowBytes()); | |||
| 1863 | } else if (SkMask::kLCD16_Format == maskFormat) { | |||
| 1864 | // Copy the A8 dstBitmap into the LCD16 imageBuffer. | |||
| 1865 | uint8_t* src = dstBitmap.getAddr8(0, 0); | |||
| 1866 | uint16_t* dst = reinterpret_cast<uint16_t*>(imageBuffer); | |||
| 1867 | for (int y = dstBitmap.height(); y --> 0;) { | |||
| 1868 | for (int x = 0; x < dstBitmap.width(); ++x) { | |||
| 1869 | dst[x] = grayToRGB16(src[x]); | |||
| 1870 | } | |||
| 1871 | dst = (uint16_t*)((char*)dst + glyph.rowBytes()); | |||
| 1872 | src += dstBitmap.rowBytes(); | |||
| 1873 | } | |||
| 1874 | } | |||
| 1875 | } break; | |||
| 1876 | ||||
| 1877 | default: | |||
| 1878 | SkDEBUGFAIL("unknown glyph format")do { if (sk_abort_is_enabled()) { do { SkDebugf("%s:%d" ": fatal error: \"" "%s" "\"\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 1878, "unknown glyph format"); ; sk_abort_no_print(); } while (false); } } while(false); | |||
| 1879 | memset(imageBuffer, 0, glyph.rowBytes() * glyph.height()); | |||
| 1880 | return; | |||
| 1881 | } | |||
| 1882 | ||||
| 1883 | // We used to always do this pre-USE_COLOR_LUMINANCE, but with colorlum, | |||
| 1884 | // it is optional | |||
| 1885 | #if defined(SK_GAMMA_APPLY_TO_A8) | |||
| 1886 | if (SkMask::kA8_Format == glyph.maskFormat() && preBlend.isApplicable()) { | |||
| 1887 | uint8_t* SK_RESTRICT__restrict__ dst = (uint8_t*)imageBuffer; | |||
| 1888 | unsigned rowBytes = glyph.rowBytes(); | |||
| 1889 | ||||
| 1890 | for (int y = glyph.height() - 1; y >= 0; --y) { | |||
| 1891 | for (int x = glyph.width() - 1; x >= 0; --x) { | |||
| 1892 | dst[x] = preBlend.fG[dst[x]]; | |||
| 1893 | } | |||
| 1894 | dst += rowBytes; | |||
| 1895 | } | |||
| 1896 | } | |||
| 1897 | #endif | |||
| 1898 | } | |||
| 1899 | ||||
| 1900 | /////////////////////////////////////////////////////////////////////////////// | |||
| 1901 | ||||
| 1902 | namespace { | |||
| 1903 | ||||
| 1904 | class SkFTGeometrySink { | |||
| 1905 | SkPathBuilder* fBuilder; | |||
| 1906 | bool fStarted; | |||
| 1907 | FT_Vector fCurrent; | |||
| 1908 | ||||
| 1909 | void goingTo(const FT_Vector* pt) { | |||
| 1910 | if (!fStarted) { | |||
| 1911 | fStarted = true; | |||
| 1912 | fBuilder->moveTo(SkFDot6ToScalar(fCurrent.x)((float)(fCurrent.x) * 0.015625f), -SkFDot6ToScalar(fCurrent.y)((float)(fCurrent.y) * 0.015625f)); | |||
| 1913 | } | |||
| 1914 | fCurrent = *pt; | |||
| 1915 | } | |||
| 1916 | ||||
| 1917 | bool currentIsNot(const FT_Vector* pt) { | |||
| 1918 | return fCurrent.x != pt->x || fCurrent.y != pt->y; | |||
| 1919 | } | |||
| 1920 | ||||
| 1921 | static int Move(const FT_Vector* pt, void* ctx) { | |||
| 1922 | SkFTGeometrySink& self = *(SkFTGeometrySink*)ctx; | |||
| 1923 | if (self.fStarted) { | |||
| 1924 | self.fBuilder->close(); | |||
| 1925 | self.fStarted = false; | |||
| 1926 | } | |||
| 1927 | self.fCurrent = *pt; | |||
| 1928 | return 0; | |||
| 1929 | } | |||
| 1930 | ||||
| 1931 | static int Line(const FT_Vector* pt, void* ctx) { | |||
| 1932 | SkFTGeometrySink& self = *(SkFTGeometrySink*)ctx; | |||
| 1933 | if (self.currentIsNot(pt)) { | |||
| 1934 | self.goingTo(pt); | |||
| 1935 | self.fBuilder->lineTo(SkFDot6ToScalar(pt->x)((float)(pt->x) * 0.015625f), -SkFDot6ToScalar(pt->y)((float)(pt->y) * 0.015625f)); | |||
| 1936 | } | |||
| 1937 | return 0; | |||
| 1938 | } | |||
| 1939 | ||||
| 1940 | static int Quad(const FT_Vector* pt0, const FT_Vector* pt1, void* ctx) { | |||
| 1941 | SkFTGeometrySink& self = *(SkFTGeometrySink*)ctx; | |||
| 1942 | if (self.currentIsNot(pt0) || self.currentIsNot(pt1)) { | |||
| 1943 | self.goingTo(pt1); | |||
| 1944 | self.fBuilder->quadTo(SkFDot6ToScalar(pt0->x)((float)(pt0->x) * 0.015625f), -SkFDot6ToScalar(pt0->y)((float)(pt0->y) * 0.015625f), | |||
| 1945 | SkFDot6ToScalar(pt1->x)((float)(pt1->x) * 0.015625f), -SkFDot6ToScalar(pt1->y)((float)(pt1->y) * 0.015625f)); | |||
| 1946 | } | |||
| 1947 | return 0; | |||
| 1948 | } | |||
| 1949 | ||||
| 1950 | static int Cubic(const FT_Vector* pt0, const FT_Vector* pt1, const FT_Vector* pt2, void* ctx) { | |||
| 1951 | SkFTGeometrySink& self = *(SkFTGeometrySink*)ctx; | |||
| 1952 | if (self.currentIsNot(pt0) || self.currentIsNot(pt1) || self.currentIsNot(pt2)) { | |||
| 1953 | self.goingTo(pt2); | |||
| 1954 | self.fBuilder->cubicTo(SkFDot6ToScalar(pt0->x)((float)(pt0->x) * 0.015625f), -SkFDot6ToScalar(pt0->y)((float)(pt0->y) * 0.015625f), | |||
| 1955 | SkFDot6ToScalar(pt1->x)((float)(pt1->x) * 0.015625f), -SkFDot6ToScalar(pt1->y)((float)(pt1->y) * 0.015625f), | |||
| 1956 | SkFDot6ToScalar(pt2->x)((float)(pt2->x) * 0.015625f), -SkFDot6ToScalar(pt2->y)((float)(pt2->y) * 0.015625f)); | |||
| 1957 | } | |||
| 1958 | return 0; | |||
| 1959 | } | |||
| 1960 | ||||
| 1961 | public: | |||
| 1962 | SkFTGeometrySink(SkPathBuilder* builder) : fBuilder{builder}, fStarted{false}, fCurrent{0,0} {} | |||
| 1963 | ||||
| 1964 | inline static constexpr const FT_Outline_Funcs Funcs{ | |||
| 1965 | /*move_to =*/ SkFTGeometrySink::Move, | |||
| 1966 | /*line_to =*/ SkFTGeometrySink::Line, | |||
| 1967 | /*conic_to =*/ SkFTGeometrySink::Quad, | |||
| 1968 | /*cubic_to =*/ SkFTGeometrySink::Cubic, | |||
| 1969 | /*shift = */ 0, | |||
| 1970 | /*delta =*/ 0, | |||
| 1971 | }; | |||
| 1972 | }; | |||
| 1973 | ||||
| 1974 | bool generateGlyphPathStatic(FT_Face face, SkPathBuilder* builder) { | |||
| 1975 | SkFTGeometrySink sink{builder}; | |||
| 1976 | if (face->glyph->format != FT_GLYPH_FORMAT_OUTLINE || | |||
| 1977 | FT_Outline_Decompose(&face->glyph->outline, &SkFTGeometrySink::Funcs, &sink)) | |||
| 1978 | { | |||
| 1979 | return false; | |||
| 1980 | } | |||
| 1981 | builder->close(); | |||
| 1982 | return true; | |||
| 1983 | } | |||
| 1984 | ||||
| 1985 | bool generateFacePathStatic(FT_Face face, SkGlyphID glyphID, | |||
| 1986 | SkScalerContextFTUtils::LoadGlyphFlags flags, SkPathBuilder* builder) { | |||
| 1987 | flags |= FT_LOAD_BITMAP_METRICS_ONLY( 1L << 22 ); // Don't decode any bitmaps. | |||
| 1988 | flags |= FT_LOAD_NO_BITMAP( 1L << 3 ); // Ignore embedded bitmaps. | |||
| 1989 | flags &= ~FT_LOAD_RENDER( 1L << 2 ); // Don't scan convert. | |||
| 1990 | flags &= ~FT_LOAD_COLOR( 1L << 20 ); // Ignore SVG. | |||
| 1991 | if (FT_Load_Glyph(face, glyphID, flags)) { | |||
| 1992 | return false; | |||
| 1993 | } | |||
| 1994 | return generateGlyphPathStatic(face, builder); | |||
| 1995 | } | |||
| 1996 | ||||
| 1997 | #ifdef TT_SUPPORT_COLRV1 | |||
| 1998 | /* TODO: Currently this call retrieves the path at units_per_em size. If we want to get | |||
| 1999 | * correct hinting for the scaled size under the transforms at this point in the color | |||
| 2000 | * glyph graph, we need to extract at least the requested glyph width and height and | |||
| 2001 | * pass that to the path generation. */ | |||
| 2002 | std::optional<SkPath> generateFacePathCOLRv1(FT_Face face, SkGlyphID glyphID, const SkMatrix* mx) { | |||
| 2003 | uint32_t flags = 0; | |||
| 2004 | flags |= FT_LOAD_BITMAP_METRICS_ONLY( 1L << 22 ); // Don't decode any bitmaps. | |||
| 2005 | flags |= FT_LOAD_NO_BITMAP( 1L << 3 ); // Ignore embedded bitmaps. | |||
| 2006 | flags &= ~FT_LOAD_RENDER( 1L << 2 ); // Don't scan convert. | |||
| 2007 | flags &= ~FT_LOAD_COLOR( 1L << 20 ); // Ignore SVG. | |||
| 2008 | flags |= FT_LOAD_NO_HINTING( 1L << 1 ); | |||
| 2009 | flags |= FT_LOAD_NO_AUTOHINT( 1L << 15 ); | |||
| 2010 | flags |= FT_LOAD_IGNORE_TRANSFORM( 1L << 11 ); | |||
| 2011 | ||||
| 2012 | SkUniqueFTSize unscaledFtSize([face]() -> FT_Size { | |||
| 2013 | FT_Size size; | |||
| 2014 | FT_Error err = FT_New_Size(face, &size); | |||
| 2015 | if (err != 0) { | |||
| 2016 | SK_TRACEFTR(err, "FT_New_Size(%s) failed in generateFacePathStaticCOLRv1.",SkDebugf("%s:%d:1: error: 0x%x '%s' " "FT_New_Size(%s) failed in generateFacePathStaticCOLRv1." "\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 2017, (uint32_t)err, SkTraceFtrGetError((int)(err)), face-> family_name) | |||
| 2017 | face->family_name)SkDebugf("%s:%d:1: error: 0x%x '%s' " "FT_New_Size(%s) failed in generateFacePathStaticCOLRv1." "\n", "/root/firefox-clang/gfx/skia/skia/src/ports/SkFontHost_FreeType_common.cpp" , 2017, (uint32_t)err, SkTraceFtrGetError((int)(err)), face-> family_name); | |||
| 2018 | return nullptr; | |||
| 2019 | } | |||
| 2020 | return size; | |||
| 2021 | }()); | |||
| 2022 | ||||
| 2023 | if (!unscaledFtSize) { | |||
| 2024 | return {}; | |||
| 2025 | } | |||
| 2026 | ||||
| 2027 | FT_Size oldSize = face->size; | |||
| 2028 | SkPathBuilder builder; | |||
| 2029 | ||||
| 2030 | auto tryGeneratePath = [face, &unscaledFtSize, glyphID, flags, &builder]() { | |||
| 2031 | FT_Error err = 0; | |||
| 2032 | ||||
| 2033 | err = FT_Activate_Size(unscaledFtSize.get()); | |||
| 2034 | if (err != 0) { | |||
| 2035 | return false; | |||
| 2036 | } | |||
| 2037 | ||||
| 2038 | err = FT_Set_Char_Size(face, SkIntToFDot6(face->units_per_EM), | |||
| 2039 | SkIntToFDot6(face->units_per_EM), 72, 72); | |||
| 2040 | if (err != 0) { | |||
| 2041 | return false; | |||
| 2042 | } | |||
| 2043 | ||||
| 2044 | err = FT_Load_Glyph(face, glyphID, flags); | |||
| 2045 | if (err != 0) { | |||
| 2046 | return false; | |||
| 2047 | } | |||
| 2048 | ||||
| 2049 | return generateGlyphPathStatic(face, &builder); | |||
| 2050 | }; | |||
| 2051 | ||||
| 2052 | bool pathGenerationResult = tryGeneratePath(); | |||
| 2053 | ||||
| 2054 | FT_Activate_Size(oldSize); | |||
| 2055 | ||||
| 2056 | if (pathGenerationResult) { | |||
| 2057 | if (mx) { | |||
| 2058 | builder.transform(*mx); | |||
| 2059 | } | |||
| 2060 | return builder.detach(); | |||
| 2061 | } else { | |||
| 2062 | return {}; | |||
| 2063 | } | |||
| 2064 | } | |||
| 2065 | #endif | |||
| 2066 | ||||
| 2067 | } // namespace | |||
| 2068 | ||||
| 2069 | bool SkScalerContextFTUtils::generateGlyphPath(FT_Face face, SkPathBuilder* builder) const { | |||
| 2070 | // We used to try simplifying overlapping contours (flags & FT_OUTLINE_OVERLAP) | |||
| 2071 | // at this stage, but that was not 100% reliable, and other font backends | |||
| 2072 | // (e.g. CoreText) do not attempt this, so we removed it. | |||
| 2073 | ||||
| 2074 | return generateGlyphPathStatic(face, builder); | |||
| 2075 | } | |||
| 2076 | ||||
| 2077 | bool SkScalerContextFTUtils::generateFacePath(FT_Face face, SkGlyphID glyphID, LoadGlyphFlags flags, | |||
| 2078 | SkPathBuilder* builder) const { | |||
| 2079 | return generateFacePathStatic(face, glyphID, flags, builder); | |||
| 2080 | } | |||
| 2081 | ||||
| 2082 | #ifdef TT_SUPPORT_COLRV1 | |||
| 2083 | bool SkScalerContextFTUtils::computeColrV1GlyphBoundingBox(FT_Face face, SkGlyphID glyphID, | |||
| 2084 | SkRect* bounds) { | |||
| 2085 | SkMatrix ctm; | |||
| 2086 | *bounds = SkRect::MakeEmpty(); | |||
| 2087 | VisitedSet activePaints; | |||
| 2088 | return colrv1_start_glyph_bounds(&ctm, bounds, face, glyphID, | |||
| 2089 | FT_COLOR_INCLUDE_ROOT_TRANSFORM, &activePaints); | |||
| 2090 | } | |||
| 2091 | #endif |