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      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 GrBitmapTextGeoProc_DEFINED
      9 #define GrBitmapTextGeoProc_DEFINED
     10 
     11 #include "GrProcessor.h"
     12 #include "GrGeometryProcessor.h"
     13 
     14 class GrGLBitmapTextGeoProc;
     15 class GrInvariantOutput;
     16 
     17 /**
     18  * The output color of this effect is a modulation of the input color and a sample from a texture.
     19  * It allows explicit specification of the filtering and wrap modes (GrTextureParams). The input
     20  * coords are a custom attribute.
     21  */
     22 class GrBitmapTextGeoProc : public GrGeometryProcessor {
     23 public:
     24     static GrGeometryProcessor* Create(GrColor color, GrTexture* tex, const GrTextureParams& p,
     25                                        GrMaskFormat format, const SkMatrix& localMatrix,
     26                                        bool usesLocalCoords) {
     27         return new GrBitmapTextGeoProc(color, tex, p, format, localMatrix, usesLocalCoords);
     28     }
     29 
     30     virtual ~GrBitmapTextGeoProc() {}
     31 
     32     const char* name() const override { return "Texture"; }
     33 
     34     const Attribute* inPosition() const { return fInPosition; }
     35     const Attribute* inColor() const { return fInColor; }
     36     const Attribute* inTextureCoords() const { return fInTextureCoords; }
     37     GrMaskFormat maskFormat() const { return fMaskFormat; }
     38     GrColor color() const { return fColor; }
     39     bool colorIgnored() const { return GrColor_ILLEGAL == fColor; }
     40     bool hasVertexColor() const { return SkToBool(fInColor); }
     41     const SkMatrix& localMatrix() const { return fLocalMatrix; }
     42     bool usesLocalCoords() const { return fUsesLocalCoords; }
     43 
     44     void getGLSLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) const override;
     45 
     46     GrGLSLPrimitiveProcessor* createGLSLInstance(const GrGLSLCaps& caps) const override;
     47 
     48 private:
     49     GrBitmapTextGeoProc(GrColor, GrTexture* texture, const GrTextureParams& params,
     50                         GrMaskFormat format, const SkMatrix& localMatrix, bool usesLocalCoords);
     51 
     52     GrColor          fColor;
     53     SkMatrix         fLocalMatrix;
     54     bool             fUsesLocalCoords;
     55     GrTextureAccess  fTextureAccess;
     56     const Attribute* fInPosition;
     57     const Attribute* fInColor;
     58     const Attribute* fInTextureCoords;
     59     GrMaskFormat     fMaskFormat;
     60 
     61     GR_DECLARE_GEOMETRY_PROCESSOR_TEST;
     62 
     63     typedef GrGeometryProcessor INHERITED;
     64 };
     65 
     66 #endif
     67