skia2/include/gpu/SkGr.h
brianosman a635936588 sRGB support in Ganesh. Several pieces:
sRGB support now also requires GL_EXT_texture_sRGB_decode, which allows
us to disable sRGB -> Linear conversion when reading textures. This gives
us an easy way to support "legacy" L32 mode. We disable decoding based on
the pixel config of the render target. Textures can override that behavior
(specifically for format-conversion draws where we want that behavior).

Added sBGRA pixel config, which is not-really-a-format. It's just sRGBA
internally, and the external format is BGR order, so TexImage calls will
swizzle correctly. This lets us interact with sRGB raster surfaces on BGR
platforms.

Devices without sRGB support behave like they always have: conversion from
color type and profile type ignores sRGB and always returns linear pixel
configs.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1789663002

Review URL: https://codereview.chromium.org/1789663002
2016-03-21 06:55:37 -07:00

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3.3 KiB
C++

/*
* Copyright 2010 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkGr_DEFINED
#define SkGr_DEFINED
#include "GrColor.h"
#include "GrTextureAccess.h"
#include "SkColor.h"
#include "SkColorPriv.h"
#include "SkFilterQuality.h"
#include "SkImageInfo.h"
class GrCaps;
class GrContext;
class GrTexture;
class GrTextureParams;
class SkBitmap;
////////////////////////////////////////////////////////////////////////////////
// Sk to Gr Type conversions
static inline GrColor SkColorToPremulGrColor(SkColor c) {
SkPMColor pm = SkPreMultiplyColor(c);
unsigned r = SkGetPackedR32(pm);
unsigned g = SkGetPackedG32(pm);
unsigned b = SkGetPackedB32(pm);
unsigned a = SkGetPackedA32(pm);
return GrColorPackRGBA(r, g, b, a);
}
static inline GrColor SkColorToUnpremulGrColor(SkColor c) {
unsigned r = SkColorGetR(c);
unsigned g = SkColorGetG(c);
unsigned b = SkColorGetB(c);
unsigned a = SkColorGetA(c);
return GrColorPackRGBA(r, g, b, a);
}
static inline GrColor SkColorToOpaqueGrColor(SkColor c) {
unsigned r = SkColorGetR(c);
unsigned g = SkColorGetG(c);
unsigned b = SkColorGetB(c);
return GrColorPackRGBA(r, g, b, 0xFF);
}
/** Replicates the SkColor's alpha to all four channels of the GrColor. */
static inline GrColor SkColorAlphaToGrColor(SkColor c) {
U8CPU a = SkColorGetA(c);
return GrColorPackRGBA(a, a, a, a);
}
static inline SkPMColor GrColorToSkPMColor(GrColor c) {
GrColorIsPMAssert(c);
return SkPackARGB32(GrColorUnpackA(c), GrColorUnpackR(c), GrColorUnpackG(c), GrColorUnpackB(c));
}
static inline GrColor SkPMColorToGrColor(SkPMColor c) {
return GrColorPackRGBA(SkGetPackedR32(c), SkGetPackedG32(c), SkGetPackedB32(c),
SkGetPackedA32(c));
}
////////////////////////////////////////////////////////////////////////////////
/** Returns a texture representing the bitmap that is compatible with the GrTextureParams. The
texture is inserted into the cache (unless the bitmap is marked volatile) and can be
retrieved again via this function. */
GrTexture* GrRefCachedBitmapTexture(GrContext*, const SkBitmap&, const GrTextureParams&);
// TODO: Move SkImageInfo2GrPixelConfig to SkGrPriv.h (requires cleanup to SkWindow its subclasses).
GrPixelConfig SkImageInfo2GrPixelConfig(SkColorType, SkAlphaType, SkColorProfileType, const GrCaps&);
static inline GrPixelConfig SkImageInfo2GrPixelConfig(const SkImageInfo& info, const GrCaps& caps) {
return SkImageInfo2GrPixelConfig(info.colorType(), info.alphaType(), info.profileType(), caps);
}
GrTextureParams::FilterMode GrSkFilterQualityToGrFilterMode(SkFilterQuality paintFilterQuality,
const SkMatrix& viewM,
const SkMatrix& localM,
bool* doBicubic);
////////////////////////////////////////////////////////////////////////////////
SkImageInfo GrMakeInfoFromTexture(GrTexture* tex, int w, int h, bool isOpaque);
// Using the dreaded SkGrPixelRef ...
SK_API void GrWrapTextureInBitmap(GrTexture* src, int w, int h, bool isOpaque,
SkBitmap* dst);
#endif