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/*
* Copyright 2013 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrSimpleTextureEffect_DEFINED
#define GrSimpleTextureEffect_DEFINED
#include "GrSingleTextureEffect.h"
#include "GrTextureProxy.h"
class GrInvariantOutput;
/**
* The output color of this effect is a modulation of the input color and a sample from a texture.
* It allows explicit specification of the filtering and wrap modes (GrSamplerParams) and accepts
* a matrix that is used to compute texture coordinates from local coordinates.
*/
class GrSimpleTextureEffect : public GrSingleTextureEffect {
public:
/* unfiltered, clamp mode */
static sk_sp<GrFragmentProcessor> Make(GrResourceProvider* resourceProvider,
sk_sp<GrTextureProxy> proxy,
sk_sp<GrColorSpaceXform> colorSpaceXform,
const SkMatrix& matrix) {
// MDB TODO: remove this instantiation once instantiation is pushed past the
// TextureSamplers. Instantiation failure in the TextureSampler is difficult to
// recover from.
GrTexture* temp = proxy->instantiateTexture(resourceProvider);
if (!temp) {
return nullptr;
}
return sk_sp<GrFragmentProcessor>(
new GrSimpleTextureEffect(resourceProvider, std::move(proxy),
std::move(colorSpaceXform), matrix,
GrSamplerParams::kNone_FilterMode));
}
/* clamp mode */
static sk_sp<GrFragmentProcessor> Make(GrResourceProvider* resourceProvider,
sk_sp<GrTextureProxy> proxy,
sk_sp<GrColorSpaceXform> colorSpaceXform,
const SkMatrix& matrix,
GrSamplerParams::FilterMode filterMode) {
// MDB TODO: remove this instantiation once instantiation is pushed past the
// TextureSamplers. Instantiation failure in the TextureSampler is difficult to
// recover from.
GrTexture* temp = proxy->instantiateTexture(resourceProvider);
if (!temp) {
return nullptr;
}
return sk_sp<GrFragmentProcessor>(
new GrSimpleTextureEffect(resourceProvider, std::move(proxy),
std::move(colorSpaceXform),
matrix, filterMode));
}
static sk_sp<GrFragmentProcessor> Make(GrResourceProvider* resourceProvider,
sk_sp<GrTextureProxy> proxy,
sk_sp<GrColorSpaceXform> colorSpaceXform,
const SkMatrix& matrix,
const GrSamplerParams& p) {
// MDB TODO: remove this instantiation once instantiation is pushed past the
// TextureSamplers. Instantiation failure in the TextureSampler is difficult to
// recover from.
GrTexture* temp = proxy->instantiateTexture(resourceProvider);
if (!temp) {
return nullptr;
}
return sk_sp<GrFragmentProcessor>(new GrSimpleTextureEffect(resourceProvider,
std::move(proxy),
std::move(colorSpaceXform),
matrix, p));
}
~GrSimpleTextureEffect() override {}
const char* name() const override { return "SimpleTexture"; }
private:
GrSimpleTextureEffect(GrResourceProvider*, sk_sp<GrTextureProxy>,
sk_sp<GrColorSpaceXform>, const SkMatrix& matrix,
GrSamplerParams::FilterMode);
GrSimpleTextureEffect(GrResourceProvider*, sk_sp<GrTextureProxy>,
sk_sp<GrColorSpaceXform>, const SkMatrix& matrix,
const GrSamplerParams&);
GrGLSLFragmentProcessor* onCreateGLSLInstance() const override;
void onGetGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder*) const override;
bool onIsEqual(const GrFragmentProcessor& other) const override { return true; }
GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
typedef GrSingleTextureEffect INHERITED;
};
#endif
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