/* * Copyright 2014 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #ifndef GrDefaultGeoProcFactory_DEFINED #define GrDefaultGeoProcFactory_DEFINED #include "src/gpu/GrColorSpaceXform.h" #include "src/gpu/GrGeometryProcessor.h" #include "src/gpu/GrShaderCaps.h" /* * A factory for creating default Geometry Processors which simply multiply position by the uniform * view matrix and wire through color, coverage, UV coords if requested. */ namespace GrDefaultGeoProcFactory { struct Color { enum Type { kPremulGrColorUniform_Type, kPremulGrColorAttribute_Type, kPremulWideColorAttribute_Type, kUnpremulSkColorAttribute_Type, }; explicit Color(const SkPMColor4f& color) : fType(kPremulGrColorUniform_Type) , fColor(color) , fColorSpaceXform(nullptr) {} Color(Type type) : fType(type) , fColor(SK_PMColor4fILLEGAL) , fColorSpaceXform(nullptr) { SkASSERT(type != kPremulGrColorUniform_Type); } Type fType; SkPMColor4f fColor; // This only applies to SkColor. Any GrColors are assumed to have been color converted // during paint conversion. sk_sp fColorSpaceXform; }; struct Coverage { enum Type { kSolid_Type, kUniform_Type, kAttribute_Type, kAttributeTweakAlpha_Type, }; explicit Coverage(uint8_t coverage) : fType(kUniform_Type), fCoverage(coverage) {} Coverage(Type type) : fType(type), fCoverage(0xff) { SkASSERT(type != kUniform_Type); } Type fType; uint8_t fCoverage; }; struct LocalCoords { enum Type { kUnused_Type, kUsePosition_Type, kHasExplicit_Type, kHasTransformed_Type, }; LocalCoords(Type type) : fType(type), fMatrix(nullptr) {} LocalCoords(Type type, const SkMatrix* matrix) : fType(type), fMatrix(matrix) { SkASSERT(kUnused_Type != type); } bool hasLocalMatrix() const { return nullptr != fMatrix; } Type fType; const SkMatrix* fMatrix; }; sk_sp Make(const GrShaderCaps*, const Color&, const Coverage&, const LocalCoords&, const SkMatrix& viewMatrix); /* * Use this factory to create a GrGeometryProcessor that expects a device space vertex position * attribute. The view matrix must still be provided to compute correctly transformed * coordinates for GrFragmentProcessors. It may fail if the view matrix is not invertible. */ sk_sp MakeForDeviceSpace(const GrShaderCaps*, const Color&, const Coverage&, const LocalCoords&, const SkMatrix& viewMatrix); }; #endif