diff options
Diffstat (limited to 'gfx/skia/patches/archive/0007-Bug-848491-Re-apply-bug-687188-Expand-the-gradient-c.patch')
| -rw-r--r-- | gfx/skia/patches/archive/0007-Bug-848491-Re-apply-bug-687188-Expand-the-gradient-c.patch | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/gfx/skia/patches/archive/0007-Bug-848491-Re-apply-bug-687188-Expand-the-gradient-c.patch b/gfx/skia/patches/archive/0007-Bug-848491-Re-apply-bug-687188-Expand-the-gradient-c.patch new file mode 100644 index 0000000000..73bca9a48d --- /dev/null +++ b/gfx/skia/patches/archive/0007-Bug-848491-Re-apply-bug-687188-Expand-the-gradient-c.patch @@ -0,0 +1,168 @@ +From: George Wright <gw@gwright.org.uk> +Date: Thu, 25 Apr 2013 20:47:06 -0400 +Subject: Bug 848491 - Re-apply bug 687188 - Expand the gradient cache by 2 to store 0/1 colour stop values for clamping. + + +diff --git a/gfx/skia/src/effects/gradients/SkGradientShader.cpp b/gfx/skia/src/effects/gradients/SkGradientShader.cpp +index 684355d..27a9c46 100644 +--- a/gfx/skia/src/effects/gradients/SkGradientShader.cpp ++++ b/gfx/skia/src/effects/gradients/SkGradientShader.cpp +@@ -453,15 +453,15 @@ const uint16_t* SkGradientShaderBase::getCache16() const { + + const SkPMColor* SkGradientShaderBase::getCache32() const { + if (fCache32 == NULL) { +- // double the count for dither entries +- const int entryCount = kCache32Count * 4; ++ // double the count for dither entries, and have an extra two entries for clamp values ++ const int entryCount = kCache32Count * 4 + 2; + const size_t allocSize = sizeof(SkPMColor) * entryCount; + + if (NULL == fCache32PixelRef) { + fCache32PixelRef = SkNEW_ARGS(SkMallocPixelRef, + (NULL, allocSize, NULL)); + } +- fCache32 = (SkPMColor*)fCache32PixelRef->getAddr(); ++ fCache32 = (SkPMColor*)fCache32PixelRef->getAddr() + 1; + if (fColorCount == 2) { + Build32bitCache(fCache32, fOrigColors[0], fOrigColors[1], + kCache32Count, fCacheAlpha); +@@ -484,7 +484,7 @@ const SkPMColor* SkGradientShaderBase::getCache32() const { + SkMallocPixelRef* newPR = SkNEW_ARGS(SkMallocPixelRef, + (NULL, allocSize, NULL)); + SkPMColor* linear = fCache32; // just computed linear data +- SkPMColor* mapped = (SkPMColor*)newPR->getAddr(); // storage for mapped data ++ SkPMColor* mapped = (SkPMColor*)newPR->getAddr() + 1; // storage for mapped data + SkUnitMapper* map = fMapper; + for (int i = 0; i < kCache32Count; i++) { + int index = map->mapUnit16((i << 8) | i) >> 8; +@@ -495,9 +495,21 @@ const SkPMColor* SkGradientShaderBase::getCache32() const { + } + fCache32PixelRef->unref(); + fCache32PixelRef = newPR; +- fCache32 = (SkPMColor*)newPR->getAddr(); ++ fCache32 = (SkPMColor*)newPR->getAddr() + 1; + } + } ++ ++ // Write the clamp colours into the first and last entries of fCache32 ++ fCache32[kCache32ClampLower] = SkPackARGB32(fCacheAlpha, ++ SkColorGetR(fOrigColors[0]), ++ SkColorGetG(fOrigColors[0]), ++ SkColorGetB(fOrigColors[0])); ++ ++ fCache32[kCache32ClampUpper] = SkPackARGB32(fCacheAlpha, ++ SkColorGetR(fOrigColors[fColorCount - 1]), ++ SkColorGetG(fOrigColors[fColorCount - 1]), ++ SkColorGetB(fOrigColors[fColorCount - 1])); ++ + return fCache32; + } + +diff --git a/gfx/skia/src/effects/gradients/SkGradientShaderPriv.h b/gfx/skia/src/effects/gradients/SkGradientShaderPriv.h +index 729ce4e..2cb6a9d 100644 +--- a/gfx/skia/src/effects/gradients/SkGradientShaderPriv.h ++++ b/gfx/skia/src/effects/gradients/SkGradientShaderPriv.h +@@ -86,6 +86,9 @@ public: + /// if dithering is disabled. + kDitherStride32 = kCache32Count, + kDitherStride16 = kCache16Count, ++ ++ kCache32ClampLower = -1, ++ kCache32ClampUpper = kCache32Count * 4 + }; + + +diff --git a/gfx/skia/src/effects/gradients/SkLinearGradient.cpp b/gfx/skia/src/effects/gradients/SkLinearGradient.cpp +index e0f216c..40ab918 100644 +--- a/gfx/skia/src/effects/gradients/SkLinearGradient.cpp ++++ b/gfx/skia/src/effects/gradients/SkLinearGradient.cpp +@@ -127,6 +127,17 @@ void shadeSpan_linear_vertical_lerp(TileProc proc, SkFixed dx, SkFixed fx, + SkPMColor* SK_RESTRICT dstC, + const SkPMColor* SK_RESTRICT cache, + int toggle, int count) { ++ if (proc == clamp_tileproc) { ++ // No need to lerp or dither for clamp values ++ if (fx < 0) { ++ sk_memset32(dstC, cache[SkGradientShaderBase::kCache32ClampLower], count); ++ return; ++ } else if (fx > 0xffff) { ++ sk_memset32(dstC, cache[SkGradientShaderBase::kCache32ClampUpper], count); ++ return; ++ } ++ } ++ + // We're a vertical gradient, so no change in a span. + // If colors change sharply across the gradient, dithering is + // insufficient (it subsamples the color space) and we need to lerp. +@@ -154,10 +165,7 @@ void shadeSpan_linear_clamp(TileProc proc, SkFixed dx, SkFixed fx, + range.init(fx, dx, count, 0, SkGradientShaderBase::kCache32Count - 1); + + if ((count = range.fCount0) > 0) { +- sk_memset32_dither(dstC, +- cache[toggle + range.fV0], +- cache[next_dither_toggle(toggle) + range.fV0], +- count); ++ sk_memset32(dstC, cache[SkGradientShaderBase::kCache32ClampLower], count); + dstC += count; + } + if ((count = range.fCount1) > 0) { +@@ -176,10 +184,7 @@ void shadeSpan_linear_clamp(TileProc proc, SkFixed dx, SkFixed fx, + } + } + if ((count = range.fCount2) > 0) { +- sk_memset32_dither(dstC, +- cache[toggle + range.fV1], +- cache[next_dither_toggle(toggle) + range.fV1], +- count); ++ sk_memset32(dstC, cache[SkGradientShaderBase::kCache32ClampUpper], count); + } + } + +diff --git a/gfx/skia/src/effects/gradients/SkTwoPointConicalGradient.cpp b/gfx/skia/src/effects/gradients/SkTwoPointConicalGradient.cpp +index abd974b..601fff4 100644 +--- a/gfx/skia/src/effects/gradients/SkTwoPointConicalGradient.cpp ++++ b/gfx/skia/src/effects/gradients/SkTwoPointConicalGradient.cpp +@@ -124,10 +124,14 @@ static void twopoint_clamp(TwoPtRadial* rec, SkPMColor* SK_RESTRICT dstC, + if (TwoPtRadial::DontDrawT(t)) { + *dstC++ = 0; + } else { +- SkFixed index = SkClampMax(t, 0xFFFF); +- SkASSERT(index <= 0xFFFF); +- *dstC++ = cache[toggle + +- (index >> SkGradientShaderBase::kCache32Shift)]; ++ if (t < 0) { ++ *dstC++ = cache[SkGradientShaderBase::kCache32ClampLower]; ++ } else if (t > 0xFFFF) { ++ *dstC++ = cache[SkGradientShaderBase::kCache32ClampUpper]; ++ } else { ++ SkASSERT(t <= 0xFFFF); ++ *dstC++ = cache[t >> SkGradientShaderBase::kCache32Shift]; ++ } + } + toggle = next_dither_toggle(toggle); + } +diff --git a/gfx/skia/src/effects/gradients/SkTwoPointRadialGradient.cpp b/gfx/skia/src/effects/gradients/SkTwoPointRadialGradient.cpp +index f70b67d..ec2ae75 100644 +--- a/gfx/skia/src/effects/gradients/SkTwoPointRadialGradient.cpp ++++ b/gfx/skia/src/effects/gradients/SkTwoPointRadialGradient.cpp +@@ -120,9 +120,14 @@ void shadeSpan_twopoint_clamp(SkScalar fx, SkScalar dx, + for (; count > 0; --count) { + SkFixed t = two_point_radial(b, fx, fy, fSr2D2, foura, + fOneOverTwoA, posRoot); +- SkFixed index = SkClampMax(t, 0xFFFF); +- SkASSERT(index <= 0xFFFF); +- *dstC++ = cache[index >> SkGradientShaderBase::kCache32Shift]; ++ if (t < 0) { ++ *dstC++ = cache[SkGradientShaderBase::kCache32ClampLower]; ++ } else if (t > 0xFFFF) { ++ *dstC++ = cache[SkGradientShaderBase::kCache32ClampUpper]; ++ } else { ++ SkASSERT(t <= 0xFFFF); ++ *dstC++ = cache[t >> SkGradientShaderBase::kCache32Shift]; ++ } + fx += dx; + fy += dy; + b += db; +-- +1.7.11.7 + |