2 * Copyright 2013 Google Inc.
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
8 #ifndef GrSimpleTextureEffect_DEFINED
9 #define GrSimpleTextureEffect_DEFINED
11 #include "GrSingleTextureEffect.h"
13 class GrInvariantOutput;
16 * The output color of this effect is a modulation of the input color and a sample from a texture.
17 * It allows explicit specification of the filtering and wrap modes (GrTextureParams). It can use
18 * local coords, positions, or a custom vertex attribute as input texture coords. The input coords
19 * can have a matrix applied in the VS in both the local and position cases but not with a custom
20 * attribute coords at this time. It will add a varying to input interpolate texture coords to the
23 class GrSimpleTextureEffect : public GrSingleTextureEffect {
25 /* unfiltered, clamp mode */
26 static GrFragmentProcessor* Create(GrTexture* tex,
27 const SkMatrix& matrix,
28 GrCoordSet coordSet = kLocal_GrCoordSet) {
29 return SkNEW_ARGS(GrSimpleTextureEffect, (tex, matrix, GrTextureParams::kNone_FilterMode,
34 static GrFragmentProcessor* Create(GrTexture* tex,
35 const SkMatrix& matrix,
36 GrTextureParams::FilterMode filterMode,
37 GrCoordSet coordSet = kLocal_GrCoordSet) {
38 return SkNEW_ARGS(GrSimpleTextureEffect, (tex, matrix, filterMode, coordSet));
41 static GrFragmentProcessor* Create(GrTexture* tex,
42 const SkMatrix& matrix,
43 const GrTextureParams& p,
44 GrCoordSet coordSet = kLocal_GrCoordSet) {
45 return SkNEW_ARGS(GrSimpleTextureEffect, (tex, matrix, p, coordSet));
48 virtual ~GrSimpleTextureEffect() {}
50 virtual const char* name() const SK_OVERRIDE { return "SimpleTexture"; }
52 virtual void getGLProcessorKey(const GrGLCaps&, GrProcessorKeyBuilder*) const SK_OVERRIDE;
54 virtual GrGLFragmentProcessor* createGLInstance() const SK_OVERRIDE;
57 GrSimpleTextureEffect(GrTexture* texture,
58 const SkMatrix& matrix,
59 GrTextureParams::FilterMode filterMode,
61 : GrSingleTextureEffect(texture, matrix, filterMode, coordSet) {
62 this->initClassID<GrSimpleTextureEffect>();
65 GrSimpleTextureEffect(GrTexture* texture,
66 const SkMatrix& matrix,
67 const GrTextureParams& params,
69 : GrSingleTextureEffect(texture, matrix, params, coordSet) {
70 this->initClassID<GrSimpleTextureEffect>();
73 virtual bool onIsEqual(const GrFragmentProcessor& other) const SK_OVERRIDE { return true; }
75 virtual void onComputeInvariantOutput(GrInvariantOutput* inout) const SK_OVERRIDE;
77 GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
79 typedef GrSingleTextureEffect INHERITED;