1/*
2 * Copyright 2013 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 GrCustomCoordsTextureEffect_DEFINED
9#define GrCustomCoordsTextureEffect_DEFINED
10
11#include "GrProcessor.h"
12#include "GrGeometryProcessor.h"
13
14class GrGLCustomCoordsTextureEffect;
15
16/**
17 * The output color of this effect is a modulation of the input color and a sample from a texture.
18 * It allows explicit specification of the filtering and wrap modes (GrTextureParams). The input
19 * coords are a custom attribute.
20 */
21class GrCustomCoordsTextureEffect : public GrGeometryProcessor {
22public:
23    static GrGeometryProcessor* Create(GrTexture* tex, const GrTextureParams& p) {
24        return SkNEW_ARGS(GrCustomCoordsTextureEffect, (tex, p));
25    }
26
27    virtual ~GrCustomCoordsTextureEffect() {}
28
29    static const char* Name() { return "Texture"; }
30
31    virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
32
33    const GrShaderVar& inTextureCoords() const { return fInTextureCoords; }
34
35    typedef GrGLCustomCoordsTextureEffect GLProcessor;
36
37    virtual const GrBackendGeometryProcessorFactory& getFactory() const SK_OVERRIDE;
38
39private:
40    GrCustomCoordsTextureEffect(GrTexture* texture, const GrTextureParams& params);
41
42    virtual bool onIsEqual(const GrProcessor& other) const SK_OVERRIDE;
43
44    GrTextureAccess    fTextureAccess;
45    const GrShaderVar& fInTextureCoords;
46
47    GR_DECLARE_GEOMETRY_PROCESSOR_TEST;
48
49    typedef GrGeometryProcessor INHERITED;
50};
51
52#endif
53