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-rw-r--r--core/fxge/skia/fx_skia_device.cpp23
1 files changed, 20 insertions, 3 deletions
diff --git a/core/fxge/skia/fx_skia_device.cpp b/core/fxge/skia/fx_skia_device.cpp
index ad3b85c1fb..278b6d874f 100644
--- a/core/fxge/skia/fx_skia_device.cpp
+++ b/core/fxge/skia/fx_skia_device.cpp
@@ -599,10 +599,27 @@ bool Upsample(const CFX_RetainPtr<CFX_DIBSource>& pSource,
break;
}
case 8:
+ // we upscale ctables to 32bit.
if (pSource->GetPalette()) {
- *ctPtr =
- new SkColorTable(pSource->GetPalette(), pSource->GetPaletteSize());
- colorType = SkColorType::kIndex_8_SkColorType;
+ dst32Storage.reset(FX_Alloc2D(uint32_t, width, height));
+ SkPMColor* dst32Pixels = dst32Storage.get();
+ const SkPMColor* ctable = pSource->GetPalette();
+ const unsigned ctableSize = pSource->GetPaletteSize();
+ for (int y = 0; y < height; ++y) {
+ const uint8_t* srcRow =
+ static_cast<const uint8_t*>(buffer) + y * rowBytes;
+ uint32_t* dstRow = dst32Pixels + y * width;
+ for (int x = 0; x < width; ++x) {
+ unsigned index = srcRow[x];
+ if (index >= ctableSize) {
+ index = 0;
+ }
+ dstRow[x] = ctable[index];
+ }
+ }
+ buffer = dst32Storage.get();
+ rowBytes = width * sizeof(uint32_t);
+ colorType = SkColorType::kN32_SkColorType;
}
break;
case 24: {