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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "effects/GrSingleTextureEffect.h"
#include "gl/GrGLProgramStage.h"
#include "gl/GrGLSL.h"
#include "gl/GrGLTexture.h"
#include "GrProgramStageFactory.h"
#include "GrTexture.h"
// For brevity, and these definitions are likely to move to a different class soon.
typedef GrGLShaderBuilder::UniformHandle UniformHandle;
static const UniformHandle kInvalidUniformHandle = GrGLShaderBuilder::kInvalidUniformHandle;
class GrGLSingleTextureEffect : public GrGLProgramStage {
public:
GrGLSingleTextureEffect(const GrProgramStageFactory& factory,
const GrCustomStage& stage) : INHERITED (factory) { }
virtual void emitVS(GrGLShaderBuilder* builder,
const char* vertexCoords) SK_OVERRIDE { }
virtual void emitFS(GrGLShaderBuilder* builder,
const char* outputColor,
const char* inputColor,
const char* samplerName) SK_OVERRIDE {
builder->emitDefaultFetch(outputColor, samplerName);
}
static inline StageKey GenKey(const GrCustomStage&) { return 0; }
private:
typedef GrGLProgramStage INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
GrSingleTextureEffect::GrSingleTextureEffect(GrTexture* texture)
: fTexture (texture) {
SkSafeRef(fTexture);
}
GrSingleTextureEffect::~GrSingleTextureEffect() {
SkSafeUnref(fTexture);
}
unsigned int GrSingleTextureEffect::numTextures() const {
return 1;
}
GrTexture* GrSingleTextureEffect::texture(unsigned int index) const {
GrAssert(0 == index);
return fTexture;
}
const GrProgramStageFactory& GrSingleTextureEffect::getFactory() const {
return GrTProgramStageFactory<GrSingleTextureEffect>::getInstance();
}
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