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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"
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 (GrTextureParams). It can use
* local coords, positions, or a custom vertex attribute as input texture coords. The input coords
* can have a matrix applied in the VS in both the local and position cases but not with a custom
* attribute coords at this time. It will add a varying to input interpolate texture coords to the
* FS.
*/
class GrSimpleTextureEffect : public GrSingleTextureEffect {
public:
/* unfiltered, clamp mode */
static GrFragmentProcessor* Create(GrTexture* tex,
const SkMatrix& matrix,
GrCoordSet coordSet = kLocal_GrCoordSet) {
return SkNEW_ARGS(GrSimpleTextureEffect, (tex, matrix, GrTextureParams::kNone_FilterMode,
coordSet));
}
/* clamp mode */
static GrFragmentProcessor* Create(GrTexture* tex,
const SkMatrix& matrix,
GrTextureParams::FilterMode filterMode,
GrCoordSet coordSet = kLocal_GrCoordSet) {
return SkNEW_ARGS(GrSimpleTextureEffect, (tex, matrix, filterMode, coordSet));
}
static GrFragmentProcessor* Create(GrTexture* tex,
const SkMatrix& matrix,
const GrTextureParams& p,
GrCoordSet coordSet = kLocal_GrCoordSet) {
return SkNEW_ARGS(GrSimpleTextureEffect, (tex, matrix, p, coordSet));
}
virtual ~GrSimpleTextureEffect() {}
const char* name() const override { return "SimpleTexture"; }
void getGLProcessorKey(const GrGLCaps&, GrProcessorKeyBuilder*) const override;
GrGLFragmentProcessor* createGLInstance() const override;
private:
GrSimpleTextureEffect(GrTexture* texture,
const SkMatrix& matrix,
GrTextureParams::FilterMode filterMode,
GrCoordSet coordSet)
: GrSingleTextureEffect(texture, matrix, filterMode, coordSet) {
this->initClassID<GrSimpleTextureEffect>();
}
GrSimpleTextureEffect(GrTexture* texture,
const SkMatrix& matrix,
const GrTextureParams& params,
GrCoordSet coordSet)
: GrSingleTextureEffect(texture, matrix, params, coordSet) {
this->initClassID<GrSimpleTextureEffect>();
}
bool onIsEqual(const GrFragmentProcessor& other) const override { return true; }
void onComputeInvariantOutput(GrInvariantOutput* inout) const override;
GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
typedef GrSingleTextureEffect INHERITED;
};
#endif
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