Allow GrGLEffects to produce variable length keys.

src/gpu/effects/GrDashingEffect.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrDashingEffect.h"
 
 #include "../GrAARectRenderer.h"
@@ skipping 452 matching lines @@
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 class GLDashingCircleEffect : public GrGLVertexEffect {
 public:
     GLDashingCircleEffect(const GrBackendEffectFactory&, const GrDrawEffect&);
 
     virtual void emitCode(GrGLFullShaderBuilder* builder,
                           const GrDrawEffect& drawEffect,
-                          EffectKey key,
+                          const GrEffectKey& key,
                           const char* outputColor,
                           const char* inputColor,
                           const TransformedCoordsArray&,
                           const TextureSamplerArray&) SK_OVERRIDE;
 
-    static inline EffectKey GenKey(const GrDrawEffect&, const GrGLCaps&);
+    static inline void GenKey(const GrDrawEffect&, const GrGLCaps&, GrEffectKeyBuilder*);
 
     virtual void setData(const GrGLUniformManager&, const GrDrawEffect&) SK_OVERRIDE;
 
 private:
     GrGLUniformManager::UniformHandle   fParamUniform;
     SkScalar                            fPrevRadius;
     SkScalar                            fPrevCenterX;
     SkScalar                            fPrevIntervalLength;
     typedef GrGLVertexEffect INHERITED;
 };
 
 GLDashingCircleEffect::GLDashingCircleEffect(const GrBackendEffectFactory& factory,
                                              const GrDrawEffect& drawEffect)
     : INHERITED (factory) {
     fPrevRadius = SK_ScalarMin;
     fPrevCenterX = SK_ScalarMin;
     fPrevIntervalLength = SK_ScalarMax;
 }
 
 void GLDashingCircleEffect::emitCode(GrGLFullShaderBuilder* builder,
                                     const GrDrawEffect& drawEffect,
-                                    EffectKey key,
+                                    const GrEffectKey& key,
                                     const char* outputColor,
                                     const char* inputColor,
                                     const TransformedCoordsArray&,
                                     const TextureSamplerArray& samplers) {
     const DashingCircleEffect& dce = drawEffect.castEffect<DashingCircleEffect>();
     const char *paramName;
     // The param uniforms, xyz, refer to circle radius - 0.5, cicles center x coord, and
     // the total interval length of the dash.
     fParamUniform = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility,
                                        kVec3f_GrSLType,
@@ skipping 30 matching lines @@
     SkScalar centerX = dce.getCenterX();
     SkScalar intervalLength = dce.getIntervalLength();
     if (radius != fPrevRadius || centerX != fPrevCenterX || intervalLength != fPrevIntervalLength) {
         uman.set3f(fParamUniform, radius - 0.5f, centerX, intervalLength);
         fPrevRadius = radius;
         fPrevCenterX = centerX;
         fPrevIntervalLength = intervalLength;
     }
 }
 
-GrGLEffect::EffectKey GLDashingCircleEffect::GenKey(const GrDrawEffect& drawEffect,
-                                                const GrGLCaps&) {
+void GLDashingCircleEffect::GenKey(const GrDrawEffect& drawEffect, const GrGLCaps&,
+                                   GrEffectKeyBuilder* b) {
     const DashingCircleEffect& dce = drawEffect.castEffect<DashingCircleEffect>();
-    return dce.getEdgeType();
+    b->add32(dce.getEdgeType());
 }
 
 //////////////////////////////////////////////////////////////////////////////
 
 GrEffect* DashingCircleEffect::Create(GrEffectEdgeType edgeType, const DashInfo& info,
                                       SkScalar radius) {
     if (info.fCount != 2 || info.fIntervals[0] != 0) {
         return NULL;
     }
 
@@ skipping 102 matching lines @@
 };
 
 //////////////////////////////////////////////////////////////////////////////
 
 class GLDashingLineEffect : public GrGLVertexEffect {
 public:
     GLDashingLineEffect(const GrBackendEffectFactory&, const GrDrawEffect&);
 
     virtual void emitCode(GrGLFullShaderBuilder* builder,
                           const GrDrawEffect& drawEffect,
-                          EffectKey key,
+                          const GrEffectKey& key,
                           const char* outputColor,
                           const char* inputColor,
                           const TransformedCoordsArray&,
                           const TextureSamplerArray&) SK_OVERRIDE;
 
-    static inline EffectKey GenKey(const GrDrawEffect&, const GrGLCaps&);
+    static inline void GenKey(const GrDrawEffect&, const GrGLCaps&, GrEffectKeyBuilder*);
 
     virtual void setData(const GrGLUniformManager&, const GrDrawEffect&) SK_OVERRIDE;
 
 private:
     GrGLUniformManager::UniformHandle   fRectUniform;
     GrGLUniformManager::UniformHandle   fIntervalUniform;
     SkRect                              fPrevRect;
     SkScalar                            fPrevIntervalLength;
     typedef GrGLVertexEffect INHERITED;
 };
 
 GLDashingLineEffect::GLDashingLineEffect(const GrBackendEffectFactory& factory,
                                      const GrDrawEffect& drawEffect)
     : INHERITED (factory) {
     fPrevRect.fLeft = SK_ScalarNaN;
     fPrevIntervalLength = SK_ScalarMax;
 }
 
 void GLDashingLineEffect::emitCode(GrGLFullShaderBuilder* builder,
                                     const GrDrawEffect& drawEffect,
-                                    EffectKey key,
+                                    const GrEffectKey& key,
                                     const char* outputColor,
                                     const char* inputColor,
                                     const TransformedCoordsArray&,
                                     const TextureSamplerArray& samplers) {
     const DashingLineEffect& de = drawEffect.castEffect<DashingLineEffect>();
     const char *rectName;
     // The rect uniform's xyzw refer to (left + 0.5, top + 0.5, right - 0.5, bottom - 0.5),
     // respectively.
     fRectUniform = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility,
                                        kVec4f_GrSLType,
@@ skipping 43 matching lines @@
     SkScalar intervalLength = de.getIntervalLength();
     if (rect != fPrevRect || intervalLength != fPrevIntervalLength) {
         uman.set4f(fRectUniform, rect.fLeft + 0.5f, rect.fTop + 0.5f,
                    rect.fRight - 0.5f, rect.fBottom - 0.5f);
         uman.set1f(fIntervalUniform, intervalLength);
         fPrevRect = rect;
         fPrevIntervalLength = intervalLength;
     }
 }
 
-GrGLEffect::EffectKey GLDashingLineEffect::GenKey(const GrDrawEffect& drawEffect,
-                                                const GrGLCaps&) {
+void GLDashingLineEffect::GenKey(const GrDrawEffect& drawEffect, const GrGLCaps&,
+                                 GrEffectKeyBuilder* b) {
     const DashingLineEffect& de = drawEffect.castEffect<DashingLineEffect>();
-    return de.getEdgeType();
+    b->add32(de.getEdgeType());
 }
 
 //////////////////////////////////////////////////////////////////////////////
 
 GrEffect* DashingLineEffect::Create(GrEffectEdgeType edgeType, const DashInfo& info,
                                     SkScalar strokeWidth) {
     if (info.fCount != 2) {
         return NULL;
     }
 
@@ skipping 59 matching lines @@
     switch (cap) {
         case GrDashingEffect::kRound_DashCap:
             return DashingCircleEffect::Create(edgeType, info, SkScalarHalf(strokeWidth));
         case GrDashingEffect::kNonRound_DashCap:
             return DashingLineEffect::Create(edgeType, info, strokeWidth);
         default:
             SkFAIL("Unexpected dashed cap.");
     }
     return NULL;
 }