f1b7a1d828
One side effect is that the SkShader's (or implicit shader's) fragment processor is responsible for the transition from an unpremul paint color to a premul color. Review URL: https://codereview.chromium.org/1348583002
146 lines
5.4 KiB
C++
146 lines
5.4 KiB
C++
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/*
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* Copyright 2010 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkGr_DEFINED
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#define SkGr_DEFINED
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#include <stddef.h>
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// Gr headers
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#include "GrContext.h"
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#include "GrTextureAccess.h"
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#include "GrTypes.h"
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// skia headers
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#include "SkBitmap.h"
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#include "SkPath.h"
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#include "SkPoint.h"
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#include "SkRegion.h"
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#include "SkClipStack.h"
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////////////////////////////////////////////////////////////////////////////////
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// Sk to Gr Type conversions
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GR_STATIC_ASSERT((int)kZero_GrBlendCoeff == (int)SkXfermode::kZero_Coeff);
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GR_STATIC_ASSERT((int)kOne_GrBlendCoeff == (int)SkXfermode::kOne_Coeff);
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GR_STATIC_ASSERT((int)kSC_GrBlendCoeff == (int)SkXfermode::kSC_Coeff);
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GR_STATIC_ASSERT((int)kISC_GrBlendCoeff == (int)SkXfermode::kISC_Coeff);
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GR_STATIC_ASSERT((int)kDC_GrBlendCoeff == (int)SkXfermode::kDC_Coeff);
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GR_STATIC_ASSERT((int)kIDC_GrBlendCoeff == (int)SkXfermode::kIDC_Coeff);
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GR_STATIC_ASSERT((int)kSA_GrBlendCoeff == (int)SkXfermode::kSA_Coeff);
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GR_STATIC_ASSERT((int)kISA_GrBlendCoeff == (int)SkXfermode::kISA_Coeff);
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GR_STATIC_ASSERT((int)kDA_GrBlendCoeff == (int)SkXfermode::kDA_Coeff);
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GR_STATIC_ASSERT((int)kIDA_GrBlendCoeff == (int)SkXfermode::kIDA_Coeff);
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GR_STATIC_ASSERT(SkXfermode::kCoeffCount == 10);
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#define SkXfermodeCoeffToGrBlendCoeff(X) ((GrBlendCoeff)(X))
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///////////////////////////////////////////////////////////////////////////////
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#include "SkColorPriv.h"
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GrPixelConfig SkImageInfo2GrPixelConfig(SkColorType, SkAlphaType, SkColorProfileType);
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static inline GrPixelConfig SkImageInfo2GrPixelConfig(const SkImageInfo& info) {
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return SkImageInfo2GrPixelConfig(info.colorType(), info.alphaType(), info.profileType());
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}
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bool GrPixelConfig2ColorAndProfileType(GrPixelConfig, SkColorType*, SkColorProfileType*);
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static inline GrColor SkColorToPremulGrColor(SkColor c) {
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SkPMColor pm = SkPreMultiplyColor(c);
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unsigned r = SkGetPackedR32(pm);
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unsigned g = SkGetPackedG32(pm);
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unsigned b = SkGetPackedB32(pm);
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unsigned a = SkGetPackedA32(pm);
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return GrColorPackRGBA(r, g, b, a);
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}
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static inline GrColor SkColorToUnpremulGrColor(SkColor c) {
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unsigned r = SkColorGetR(c);
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unsigned g = SkColorGetG(c);
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unsigned b = SkColorGetB(c);
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unsigned a = SkColorGetA(c);
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return GrColorPackRGBA(r, g, b, a);
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}
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static inline GrColor SkColorToOpaqueGrColor(SkColor c) {
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unsigned r = SkColorGetR(c);
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unsigned g = SkColorGetG(c);
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unsigned b = SkColorGetB(c);
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return GrColorPackRGBA(r, g, b, 0xFF);
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}
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/** Replicates the SkColor's alpha to all four channels of the GrColor. */
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static inline GrColor SkColorAlphaToGrColor(SkColor c) {
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U8CPU a = SkColorGetA(c);
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return GrColorPackRGBA(a, a, a, a);
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}
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static inline SkPMColor GrColorToSkPMColor(GrColor c) {
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GrColorIsPMAssert(c);
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return SkPackARGB32(GrColorUnpackA(c), GrColorUnpackR(c), GrColorUnpackG(c), GrColorUnpackB(c));
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}
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static inline GrColor SkPMColorToGrColor(SkPMColor c) {
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return GrColorPackRGBA(SkGetPackedR32(c), SkGetPackedG32(c), SkGetPackedB32(c),
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SkGetPackedA32(c));
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}
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GrSurfaceDesc GrImageInfoToSurfaceDesc(const SkImageInfo&);
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////////////////////////////////////////////////////////////////////////////////
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/**
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* If the compressed data in the SkData is supported (as a texture format, this returns
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* the pixel-config that should be used, and sets outStartOfDataToUpload to the ptr into
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* the data where the actual raw data starts (skipping any header bytes).
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*
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* If the compressed data is not supported, this returns kUnknown_GrPixelConfig, and
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* ignores outStartOfDataToUpload.
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*/
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GrPixelConfig GrIsCompressedTextureDataSupported(GrContext* ctx, SkData* data,
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int expectedW, int expectedH,
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const void** outStartOfDataToUpload);
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// Helper that calls GrIsImageInCache assuming bitmap is not volatile.
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bool GrIsBitmapInCache(const GrContext*, const SkBitmap&, const GrTextureParams*);
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bool GrIsImageInCache(const GrContext* ctx, uint32_t imageID, const SkIRect& subset,
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GrTexture* nativeTexture, const GrTextureParams*);
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GrTexture* GrRefCachedBitmapTexture(GrContext*, const SkBitmap&, const GrTextureParams*);
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GrTexture* GrRefCachedBitmapTexture(GrContext*, const SkBitmap&, SkImageUsageType);
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GrTexture* GrCreateTextureForPixels(GrContext*, const GrUniqueKey& optionalKey, GrSurfaceDesc,
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SkPixelRef* pixelRefForInvalidationNotificationOrNull,
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const void* pixels, size_t rowBytesOrZero);
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////////////////////////////////////////////////////////////////////////////////
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SkImageInfo GrMakeInfoFromTexture(GrTexture* tex, int w, int h, bool isOpaque);
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// Using the dreaded SkGrPixelRef ...
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SK_API void GrWrapTextureInBitmap(GrTexture* src, int w, int h, bool isOpaque,
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SkBitmap* dst);
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GrTextureParams::FilterMode GrSkFilterQualityToGrFilterMode(SkFilterQuality paintFilterQuality,
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const SkMatrix& viewM,
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const SkMatrix& localM,
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bool* doBicubic);
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////////////////////////////////////////////////////////////////////////////////
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// Classes
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class SkGlyphCache;
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////////////////////////////////////////////////////////////////////////////////
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#endif
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