1/*
2 * Copyright 2010 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#ifndef SkGr_DEFINED
9#define SkGr_DEFINED
10
11#include "GrColor.h"
12#include "GrTextureAccess.h"
13#include "SkColor.h"
14#include "SkColorPriv.h"
15#include "SkFilterQuality.h"
16#include "SkImageInfo.h"
17
18class GrContext;
19class GrTexture;
20class GrTextureParams;
21class SkBitmap;
22
23////////////////////////////////////////////////////////////////////////////////
24// Sk to Gr Type conversions
25
26static inline GrColor SkColorToPremulGrColor(SkColor c) {
27    SkPMColor pm = SkPreMultiplyColor(c);
28    unsigned r = SkGetPackedR32(pm);
29    unsigned g = SkGetPackedG32(pm);
30    unsigned b = SkGetPackedB32(pm);
31    unsigned a = SkGetPackedA32(pm);
32    return GrColorPackRGBA(r, g, b, a);
33}
34
35static inline GrColor SkColorToUnpremulGrColor(SkColor c) {
36    unsigned r = SkColorGetR(c);
37    unsigned g = SkColorGetG(c);
38    unsigned b = SkColorGetB(c);
39    unsigned a = SkColorGetA(c);
40    return GrColorPackRGBA(r, g, b, a);
41}
42
43static inline GrColor SkColorToOpaqueGrColor(SkColor c) {
44    unsigned r = SkColorGetR(c);
45    unsigned g = SkColorGetG(c);
46    unsigned b = SkColorGetB(c);
47    return GrColorPackRGBA(r, g, b, 0xFF);
48}
49
50/** Replicates the SkColor's alpha to all four channels of the GrColor. */
51static inline GrColor SkColorAlphaToGrColor(SkColor c) {
52    U8CPU a = SkColorGetA(c);
53    return GrColorPackRGBA(a, a, a, a);
54}
55
56static inline SkPMColor GrColorToSkPMColor(GrColor c) {
57    GrColorIsPMAssert(c);
58    return SkPackARGB32(GrColorUnpackA(c), GrColorUnpackR(c), GrColorUnpackG(c), GrColorUnpackB(c));
59}
60
61static inline GrColor SkPMColorToGrColor(SkPMColor c) {
62    return GrColorPackRGBA(SkGetPackedR32(c), SkGetPackedG32(c), SkGetPackedB32(c),
63                           SkGetPackedA32(c));
64}
65
66////////////////////////////////////////////////////////////////////////////////
67/** Returns a texture representing the bitmap that is compatible with the GrTextureParams. The
68    texture is inserted into the cache (unless the bitmap is marked volatile) and can be
69    retrieved again via this function. */
70GrTexture* GrRefCachedBitmapTexture(GrContext*, const SkBitmap&, const GrTextureParams&);
71
72// TODO: Move SkImageInfo2GrPixelConfig to SkGrPriv.h (requires cleanup to SkWindow its subclasses).
73GrPixelConfig SkImageInfo2GrPixelConfig(SkColorType, SkAlphaType, SkColorProfileType);
74
75static inline GrPixelConfig SkImageInfo2GrPixelConfig(const SkImageInfo& info) {
76    return SkImageInfo2GrPixelConfig(info.colorType(), info.alphaType(), info.profileType());
77}
78
79GrTextureParams::FilterMode GrSkFilterQualityToGrFilterMode(SkFilterQuality paintFilterQuality,
80                                                            const SkMatrix& viewM,
81                                                            const SkMatrix& localM,
82                                                            bool* doBicubic);
83
84////////////////////////////////////////////////////////////////////////////////
85
86SkImageInfo GrMakeInfoFromTexture(GrTexture* tex, int w, int h, bool isOpaque);
87
88// Using the dreaded SkGrPixelRef ...
89SK_API void GrWrapTextureInBitmap(GrTexture* src, int w, int h, bool isOpaque,
90                                  SkBitmap* dst);
91
92#endif
93