1 /* 2 * Copyright 2017 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 "GrBlend.h" 12 #include "GrColor.h" 13 #include "GrSamplerState.h" 14 #include "GrTypes.h" 15 #include "SkBlendModePriv.h" 16 #include "SkCanvas.h" 17 #include "SkColor.h" 18 #include "SkColorData.h" 19 #include "SkFilterQuality.h" 20 #include "SkImageInfo.h" 21 #include "SkMatrix.h" 22 #include "SkVertices.h" 23 24 class GrCaps; 25 class GrColorSpaceInfo; 26 class GrColorSpaceXform; 27 class GrContext; 28 class GrFragmentProcessor; 29 class GrPaint; 30 class GrResourceProvider; 31 class GrTextureProxy; 32 class GrUniqueKey; 33 class SkBitmap; 34 class SkData; 35 class SkPaint; 36 class SkPixelRef; 37 class SkPixmap; 38 struct SkIRect; 39 40 //////////////////////////////////////////////////////////////////////////////// 41 // Color type conversions 42 43 static inline GrColor SkColorToPremulGrColor(SkColor c) { 44 SkPMColor pm = SkPreMultiplyColor(c); 45 unsigned r = SkGetPackedR32(pm); 46 unsigned g = SkGetPackedG32(pm); 47 unsigned b = SkGetPackedB32(pm); 48 unsigned a = SkGetPackedA32(pm); 49 return GrColorPackRGBA(r, g, b, a); 50 } 51 52 static inline GrColor SkColorToUnpremulGrColor(SkColor c) { 53 unsigned r = SkColorGetR(c); 54 unsigned g = SkColorGetG(c); 55 unsigned b = SkColorGetB(c); 56 unsigned a = SkColorGetA(c); 57 return GrColorPackRGBA(r, g, b, a); 58 } 59 60 /** Similar, but using SkPMColor4f. */ 61 SkPMColor4f SkColorToPMColor4f(SkColor, const GrColorSpaceInfo&); 62 63 /** Converts an SkColor4f to the destination color space. Pins the color if the destination is 64 normalized, or the device does not support half-float vertex attributes. */ 65 SkColor4f SkColor4fPrepForDst(SkColor4f, const GrColorSpaceInfo&, const GrCaps&); 66 67 //////////////////////////////////////////////////////////////////////////////// 68 // Paint conversion 69 70 /** Converts an SkPaint to a GrPaint for a given GrContext. The matrix is required in order 71 to convert the SkShader (if any) on the SkPaint. The primitive itself has no color. */ 72 bool SkPaintToGrPaint(GrContext*, 73 const GrColorSpaceInfo& dstColorSpaceInfo, 74 const SkPaint& skPaint, 75 const SkMatrix& viewM, 76 GrPaint* grPaint); 77 78 /** Same as above but ignores the SkShader (if any) on skPaint. */ 79 bool SkPaintToGrPaintNoShader(GrContext* context, 80 const GrColorSpaceInfo& dstColorSpaceInfo, 81 const SkPaint& skPaint, 82 GrPaint* grPaint); 83 84 /** Replaces the SkShader (if any) on skPaint with the passed in GrFragmentProcessor. The processor 85 should expect an unpremul input color and produce a premultiplied output color. There is 86 no primitive color. */ 87 bool SkPaintToGrPaintReplaceShader(GrContext*, 88 const GrColorSpaceInfo& dstColorSpaceInfo, 89 const SkPaint& skPaint, 90 std::unique_ptr<GrFragmentProcessor> shaderFP, 91 GrPaint* grPaint); 92 93 /** Blends the SkPaint's shader (or color if no shader) with the color which specified via a 94 GrOp's GrPrimitiveProcesssor. */ 95 bool SkPaintToGrPaintWithXfermode(GrContext* context, 96 const GrColorSpaceInfo& dstColorSpaceInfo, 97 const SkPaint& skPaint, 98 const SkMatrix& viewM, 99 SkBlendMode primColorMode, 100 GrPaint* grPaint); 101 102 /** This is used when there is a primitive color, but the shader should be ignored. Currently, 103 the expectation is that the primitive color will be premultiplied, though it really should be 104 unpremultiplied so that interpolation is done in unpremul space. The paint's alpha will be 105 applied to the primitive color after interpolation. */ 106 inline bool SkPaintToGrPaintWithPrimitiveColor(GrContext* context, 107 const GrColorSpaceInfo& dstColorSpaceInfo, 108 const SkPaint& skPaint, GrPaint* grPaint) { 109 return SkPaintToGrPaintWithXfermode(context, dstColorSpaceInfo, skPaint, SkMatrix::I(), 110 SkBlendMode::kDst, grPaint); 111 } 112 113 /** This is used when there may or may not be a shader, and the caller wants to plugin a texture 114 lookup. If there is a shader, then its output will only be used if the texture is alpha8. */ 115 bool SkPaintToGrPaintWithTexture(GrContext* context, 116 const GrColorSpaceInfo& dstColorSpaceInfo, 117 const SkPaint& paint, 118 const SkMatrix& viewM, 119 std::unique_ptr<GrFragmentProcessor> fp, 120 bool textureIsAlphaOnly, 121 GrPaint* grPaint); 122 123 //////////////////////////////////////////////////////////////////////////////// 124 // Misc Sk to Gr type conversions 125 126 GrSurfaceDesc GrImageInfoToSurfaceDesc(const SkImageInfo&); 127 GrPixelConfig SkColorType2GrPixelConfig(const SkColorType); 128 GrPixelConfig SkImageInfo2GrPixelConfig(const SkImageInfo& info); 129 130 bool GrPixelConfigToColorType(GrPixelConfig, SkColorType*); 131 132 GrSamplerState::Filter GrSkFilterQualityToGrFilterMode(SkFilterQuality paintFilterQuality, 133 const SkMatrix& viewM, 134 const SkMatrix& localM, 135 bool sharpenMipmappedTextures, 136 bool* doBicubic); 137 138 ////////////////////////////////////////////////////////////////////////////// 139 140 static inline GrPrimitiveType SkVertexModeToGrPrimitiveType(SkVertices::VertexMode mode) { 141 switch (mode) { 142 case SkVertices::kTriangles_VertexMode: 143 return GrPrimitiveType::kTriangles; 144 case SkVertices::kTriangleStrip_VertexMode: 145 return GrPrimitiveType::kTriangleStrip; 146 case SkVertices::kTriangleFan_VertexMode: 147 break; 148 } 149 SK_ABORT("Invalid mode"); 150 return GrPrimitiveType::kPoints; 151 } 152 153 ////////////////////////////////////////////////////////////////////////////// 154 155 GR_STATIC_ASSERT((int)kZero_GrBlendCoeff == (int)SkBlendModeCoeff::kZero); 156 GR_STATIC_ASSERT((int)kOne_GrBlendCoeff == (int)SkBlendModeCoeff::kOne); 157 GR_STATIC_ASSERT((int)kSC_GrBlendCoeff == (int)SkBlendModeCoeff::kSC); 158 GR_STATIC_ASSERT((int)kISC_GrBlendCoeff == (int)SkBlendModeCoeff::kISC); 159 GR_STATIC_ASSERT((int)kDC_GrBlendCoeff == (int)SkBlendModeCoeff::kDC); 160 GR_STATIC_ASSERT((int)kIDC_GrBlendCoeff == (int)SkBlendModeCoeff::kIDC); 161 GR_STATIC_ASSERT((int)kSA_GrBlendCoeff == (int)SkBlendModeCoeff::kSA); 162 GR_STATIC_ASSERT((int)kISA_GrBlendCoeff == (int)SkBlendModeCoeff::kISA); 163 GR_STATIC_ASSERT((int)kDA_GrBlendCoeff == (int)SkBlendModeCoeff::kDA); 164 GR_STATIC_ASSERT((int)kIDA_GrBlendCoeff == (int)SkBlendModeCoeff::kIDA); 165 //GR_STATIC_ASSERT(SkXfermode::kCoeffCount == 10); 166 167 //////////////////////////////////////////////////////////////////////////////// 168 // Texture management 169 170 /** Returns a texture representing the bitmap that is compatible with the GrSamplerState. The 171 * texture is inserted into the cache (unless the bitmap is marked volatile) and can be 172 * retrieved again via this function. 173 * The 'scaleAdjust' in/out parameter will be updated to hold any rescaling that needs to be 174 * performed on the absolute texture coordinates (e.g., if the texture is resized out to 175 * the next power of two). It can be null if the caller is sure the bitmap won't be resized. 176 */ 177 sk_sp<GrTextureProxy> GrRefCachedBitmapTextureProxy(GrContext*, 178 const SkBitmap&, 179 const GrSamplerState&, 180 SkScalar scaleAdjust[2]); 181 182 /** 183 * Creates a new texture for the bitmap. Does not concern itself with cache keys or texture params. 184 * The bitmap must have CPU-accessible pixels. Attempts to take advantage of faster paths for 185 * yuv planes. 186 */ 187 sk_sp<GrTextureProxy> GrUploadBitmapToTextureProxy(GrProxyProvider*, const SkBitmap&); 188 189 /** 190 * Creates a new texture with mipmap levels and copies the baseProxy into the base layer. 191 */ 192 sk_sp<GrTextureProxy> GrCopyBaseMipMapToTextureProxy(GrContext*, 193 GrTextureProxy* baseProxy); 194 195 /* 196 * Create a texture proxy from the provided bitmap by wrapping it in an image and calling 197 * GrMakeCachedImageProxy. 198 */ 199 sk_sp<GrTextureProxy> GrMakeCachedBitmapProxy(GrProxyProvider*, const SkBitmap& bitmap, 200 SkBackingFit fit = SkBackingFit::kExact); 201 202 /* 203 * Create a texture proxy from the provided 'srcImage' and add it to the texture cache 204 * using the key also extracted from 'srcImage'. 205 */ 206 sk_sp<GrTextureProxy> GrMakeCachedImageProxy(GrProxyProvider*, sk_sp<SkImage> srcImage, 207 SkBackingFit fit = SkBackingFit::kExact); 208 209 /** 210 * Our key includes the offset, width, and height so that bitmaps created by extractSubset() 211 * are unique. 212 * 213 * The imageID is in the shared namespace (see SkNextID::ImageID()) 214 * - SkBitmap/SkPixelRef 215 * - SkImage 216 * - SkImageGenerator 217 * 218 * Note: width/height must fit in 16bits for this impl. 219 */ 220 void GrMakeKeyFromImageID(GrUniqueKey* key, uint32_t imageID, const SkIRect& imageBounds); 221 222 /** Call this after installing a GrUniqueKey on texture. It will cause the texture's key to be 223 removed should the bitmap's contents change or be destroyed. */ 224 void GrInstallBitmapUniqueKeyInvalidator(const GrUniqueKey& key, uint32_t contextUniqueID, 225 SkPixelRef* pixelRef); 226 227 #endif 228
