Upstream version 10.39.225.0

[platform/framework/web/crosswalk.git] / src / third_party / skia / src / gpu / effects / GrDistanceFieldTextureEffect.h

diff --git a/src/third_party/skia/src/gpu/effects/GrDistanceFieldTextureEffect.h b/src/third_party/skia/src/gpu/effects/GrDistanceFieldTextureEffect.h
index 937908f..b8d774d 100644 (file)
--- a/src/third_party/skia/src/gpu/effects/GrDistanceFieldTextureEffect.h
+++ b/src/third_party/skia/src/gpu/effects/GrDistanceFieldTextureEffect.h
@@ -8,91 +8,135 @@
 #ifndef GrDistanceFieldTextureEffect_DEFINED
 #define GrDistanceFieldTextureEffect_DEFINED
 
-#include "GrEffect.h"
-#include "GrVertexEffect.h"
+#include "GrProcessor.h"
+#include "GrGeometryProcessor.h"
 
 class GrGLDistanceFieldTextureEffect;
 class GrGLDistanceFieldLCDTextureEffect;
 
+enum GrDistanceFieldEffectFlags {
+    kSimilarity_DistanceFieldEffectFlag = 0x01,   // ctm is similarity matrix
+    kRectToRect_DistanceFieldEffectFlag = 0x02,   // ctm maps rects to rects
+    kUseLCD_DistanceFieldEffectFlag     = 0x04,   // use lcd text
+    kBGR_DistanceFieldEffectFlag        = 0x08,   // lcd display has bgr order
+    kPortrait_DistanceFieldEffectFlag   = 0x10,   // lcd display is in portrait mode (not used yet)
+    
+    kUniformScale_DistanceFieldEffectMask = kSimilarity_DistanceFieldEffectFlag |
+                                            kRectToRect_DistanceFieldEffectFlag,
+    // The subset of the flags relevant to GrDistanceFieldTextureEffect
+    kNonLCD_DistanceFieldEffectMask       = kSimilarity_DistanceFieldEffectFlag,
+    // The subset of the flags relevant to GrDistanceFieldLCDTextureEffect
+    kLCD_DistanceFieldEffectMask          = kSimilarity_DistanceFieldEffectFlag |
+                                            kRectToRect_DistanceFieldEffectFlag |
+                                            kUseLCD_DistanceFieldEffectFlag |
+                                            kBGR_DistanceFieldEffectFlag,
+};
+
 /**
  * The output color of this effect is a modulation of the input color and a sample from a
  * distance field texture (using a smoothed step function near 0.5).
  * It allows explicit specification of the filtering and wrap modes (GrTextureParams). The input
- * coords are a custom attribute.
+ * coords are a custom attribute. Gamma correction is handled via a texture LUT.
  */
-class GrDistanceFieldTextureEffect : public GrVertexEffect {
+class GrDistanceFieldTextureEffect : public GrGeometryProcessor {
 public:
-    static GrEffectRef* Create(GrTexture* tex, const GrTextureParams& params, bool similarity) {
-        AutoEffectUnref effect(SkNEW_ARGS(GrDistanceFieldTextureEffect, (tex, params, similarity)));
-        return CreateEffectRef(effect);
+#ifdef SK_GAMMA_APPLY_TO_A8
+    static GrGeometryProcessor* Create(GrTexture* tex, const GrTextureParams& params,
+                                       GrTexture* gamma, const GrTextureParams& gammaParams,
+                                       float lum, uint32_t flags) {
+       return SkNEW_ARGS(GrDistanceFieldTextureEffect, (tex, params, gamma, gammaParams, lum,
+                                                        flags));
+    }
+#else
+    static GrGeometryProcessor* Create(GrTexture* tex, const GrTextureParams& params,
+                                       uint32_t flags) {
+        return  SkNEW_ARGS(GrDistanceFieldTextureEffect, (tex, params, flags));
     }
+#endif
 
     virtual ~GrDistanceFieldTextureEffect() {}
 
     static const char* Name() { return "DistanceFieldTexture"; }
 
     virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
-    bool isSimilarity() const { return fIsSimilarity; }
 
-    typedef GrGLDistanceFieldTextureEffect GLEffect;
+    const GrShaderVar& inTextureCoords() const { return fInTextureCoords; }
+#ifdef SK_GAMMA_APPLY_TO_A8
+    float getLuminance() const { return fLuminance; }
+#endif
+    uint32_t getFlags() const { return fFlags; }
 
-    virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE;
+    typedef GrGLDistanceFieldTextureEffect GLProcessor;
+
+    virtual const GrBackendGeometryProcessorFactory& getFactory() const SK_OVERRIDE;
 
 private:
     GrDistanceFieldTextureEffect(GrTexture* texture, const GrTextureParams& params,
-                                 bool uniformScale);
+#ifdef SK_GAMMA_APPLY_TO_A8
+                                 GrTexture* gamma, const GrTextureParams& gammaParams, float lum,
+#endif
+                                 uint32_t flags);
 
-    virtual bool onIsEqual(const GrEffect& other) const SK_OVERRIDE;
+    virtual bool onIsEqual(const GrProcessor& other) const SK_OVERRIDE;
 
-    GrTextureAccess fTextureAccess;
-    bool            fIsSimilarity;
+    GrTextureAccess    fTextureAccess;
+#ifdef SK_GAMMA_APPLY_TO_A8
+    GrTextureAccess    fGammaTextureAccess;
+    float              fLuminance;
+#endif
+    uint32_t           fFlags;
+    const GrShaderVar& fInTextureCoords;
 
-    GR_DECLARE_EFFECT_TEST;
+    GR_DECLARE_GEOMETRY_PROCESSOR_TEST;
 
-    typedef GrVertexEffect INHERITED;
+    typedef GrFragmentProcessor INHERITED;
 };
 
 /**
  * The output color of this effect is a modulation of the input color and samples from a
  * distance field texture (using a smoothed step function near 0.5), adjusted for LCD displays.
  * It allows explicit specification of the filtering and wrap modes (GrTextureParams). The input
- * coords are a custom attribute.
+ * coords are a custom attribute. Gamma correction is handled via a texture LUT.
  */
-class GrDistanceFieldLCDTextureEffect : public GrVertexEffect {
+class GrDistanceFieldLCDTextureEffect : public GrGeometryProcessor {
 public:
-    static GrEffectRef* Create(GrTexture* tex, const GrTextureParams& params,
-                               bool uniformScale, bool useBGR) {
-        AutoEffectUnref effect(SkNEW_ARGS(GrDistanceFieldLCDTextureEffect,
-                                          (tex, params, uniformScale, useBGR)));
-        return CreateEffectRef(effect);
+    static GrGeometryProcessor* Create(GrTexture* tex, const GrTextureParams& params,
+                                       GrTexture* gamma, const GrTextureParams& gammaParams,
+                                       SkColor textColor, uint32_t flags) {
+        return SkNEW_ARGS(GrDistanceFieldLCDTextureEffect,
+                          (tex, params, gamma, gammaParams, textColor, flags));
     }
 
     virtual ~GrDistanceFieldLCDTextureEffect() {}
 
     static const char* Name() { return "DistanceFieldLCDTexture"; }
 
+    const GrShaderVar& inTextureCoords() const { return fInTextureCoords; }
     virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags) const SK_OVERRIDE;
-    bool isUniformScale() const { return fUniformScale; }
-    bool useBGR() const { return fUseBGR; }
+    GrColor getTextColor() const { return fTextColor; }
+    uint32_t getFlags() const { return fFlags; }
 
-    typedef GrGLDistanceFieldLCDTextureEffect GLEffect;
+    typedef GrGLDistanceFieldLCDTextureEffect GLProcessor;
 
-    virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE;
+    virtual const GrBackendGeometryProcessorFactory& getFactory() const SK_OVERRIDE;
 
 private:
     GrDistanceFieldLCDTextureEffect(GrTexture* texture, const GrTextureParams& params,
-                                    bool uniformScale, bool useBGR);
+                                    GrTexture* gamma, const GrTextureParams& gammaParams,
+                                    SkColor textColor,
+                                    uint32_t flags);
 
-    virtual bool onIsEqual(const GrEffect& other) const SK_OVERRIDE;
+    virtual bool onIsEqual(const GrProcessor& other) const SK_OVERRIDE;
 
-    GrTextureAccess fTextureAccess;
-    bool            fUniformScale;
-    bool            fUseBGR;
+    GrTextureAccess    fTextureAccess;
+    GrTextureAccess    fGammaTextureAccess;
+    GrColor            fTextColor;
+    uint32_t           fFlags;
+    const GrShaderVar& fInTextureCoords;
 
-    GR_DECLARE_EFFECT_TEST;
+    GR_DECLARE_GEOMETRY_PROCESSOR_TEST;
 
-    typedef GrVertexEffect INHERITED;
+    typedef GrFragmentProcessor INHERITED;
 };
 
-
 #endif