include/gpu/SkGr.h

   1
   2 /*
   3  * Copyright 2010 Google Inc.
   4  *
   5  * Use of this source code is governed by a BSD-style license that can be
   6  * found in the LICENSE file.
   7  */
   8
   9
  10
  11 #ifndef SkGr_DEFINED
  12 #define SkGr_DEFINED
  13
  14 #include <stddef.h>
  15
  16 // Gr headers
  17 #include "GrTypes.h"
  18 #include "GrContext.h"
  19
  20 // skia headers
  21 #include "SkBitmap.h"
  22 #include "SkPath.h"
  23 #include "SkPoint.h"
  24 #include "SkRegion.h"
  25 #include "SkClipStack.h"
  26
  27 ////////////////////////////////////////////////////////////////////////////////
  28 // Sk to Gr Type conversions
  29
  30 GR_STATIC_ASSERT((int)kZero_GrBlendCoeff == (int)SkXfermode::kZero_Coeff);
  31 GR_STATIC_ASSERT((int)kOne_GrBlendCoeff  == (int)SkXfermode::kOne_Coeff);
  32 GR_STATIC_ASSERT((int)kSC_GrBlendCoeff   == (int)SkXfermode::kSC_Coeff);
  33 GR_STATIC_ASSERT((int)kISC_GrBlendCoeff  == (int)SkXfermode::kISC_Coeff);
  34 GR_STATIC_ASSERT((int)kDC_GrBlendCoeff   == (int)SkXfermode::kDC_Coeff);
  35 GR_STATIC_ASSERT((int)kIDC_GrBlendCoeff  == (int)SkXfermode::kIDC_Coeff);
  36 GR_STATIC_ASSERT((int)kSA_GrBlendCoeff   == (int)SkXfermode::kSA_Coeff);
  37 GR_STATIC_ASSERT((int)kISA_GrBlendCoeff  == (int)SkXfermode::kISA_Coeff);
  38 GR_STATIC_ASSERT((int)kDA_GrBlendCoeff   == (int)SkXfermode::kDA_Coeff);
  39 GR_STATIC_ASSERT((int)kIDA_GrBlendCoeff  == (int)SkXfermode::kIDA_Coeff);
  40
  41 #define sk_blend_to_grblend(X) ((GrBlendCoeff)(X))
  42
  43 ///////////////////////////////////////////////////////////////////////////////
  44
  45 #include "SkColorPriv.h"
  46
  47 GrPixelConfig SkImageInfo2GrPixelConfig(SkColorType, SkAlphaType);
  48
  49 static inline GrPixelConfig SkImageInfo2GrPixelConfig(const SkImageInfo& info) {
  50     return SkImageInfo2GrPixelConfig(info.colorType(), info.alphaType());
  51 }
  52
  53 bool GrPixelConfig2ColorType(GrPixelConfig, SkColorType*);
  54
  55 static inline GrColor SkColor2GrColor(SkColor c) {
  56     SkPMColor pm = SkPreMultiplyColor(c);
  57     unsigned r = SkGetPackedR32(pm);
  58     unsigned g = SkGetPackedG32(pm);
  59     unsigned b = SkGetPackedB32(pm);
  60     unsigned a = SkGetPackedA32(pm);
  61     return GrColorPackRGBA(r, g, b, a);
  62 }
  63
  64 static inline GrColor SkColor2GrColorJustAlpha(SkColor c) {
  65     U8CPU a = SkColorGetA(c);
  66     return GrColorPackRGBA(a, a, a, a);
  67 }
  68
  69 ////////////////////////////////////////////////////////////////////////////////
  70
  71 bool GrIsBitmapInCache(const GrContext*, const SkBitmap&, const GrTextureParams*);
  72
  73 GrTexture* GrLockAndRefCachedBitmapTexture(GrContext*, const SkBitmap&, const GrTextureParams*);
  74
  75 void GrUnlockAndUnrefCachedBitmapTexture(GrTexture*);
  76
  77 ////////////////////////////////////////////////////////////////////////////////
  78
  79 // Converts a SkPaint to a GrPaint, ignoring the SkPaint's shader.
  80 // Sets the color of GrPaint to the value of the parameter paintColor
  81 // Callers may subsequently modify the GrPaint. Setting constantColor indicates
  82 // that the final paint will draw the same color at every pixel. This allows
  83 // an optimization where the the color filter can be applied to the SkPaint's
  84 // color once while converting to GrPaint and then ignored.
  85 void SkPaint2GrPaintNoShader(GrContext* context, const SkPaint& skPaint, GrColor paintColor,
  86                              bool constantColor, GrPaint* grPaint);
  87
  88 // This function is similar to skPaint2GrPaintNoShader but also converts
  89 // skPaint's shader to a GrTexture/GrProcessorStage if possible.
  90 // constantColor has the same meaning as in skPaint2GrPaintNoShader.
  91 void SkPaint2GrPaintShader(GrContext* context, const SkPaint& skPaint,
  92                            bool constantColor, GrPaint* grPaint);
  93
  94 ////////////////////////////////////////////////////////////////////////////////
  95 // Classes
  96
  97 class SkGlyphCache;
  98
  99 ////////////////////////////////////////////////////////////////////////////////
 100
 101 #endif