Create GLSLUniformHandler class for gpu backend

src/gpu/effects/GrRRectEffect.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 "GrRRectEffect.h"
 
 #include "GrConvexPolyEffect.h"
 #include "GrFragmentProcessor.h"
 #include "GrInvariantOutput.h"
 #include "GrOvalEffect.h"
 #include "SkRRect.h"
+#include "SkTLazy.h"
 #include "glsl/GrGLSLFragmentProcessor.h"
 #include "glsl/GrGLSLFragmentShaderBuilder.h"
-#include "glsl/GrGLSLProgramBuilder.h"
 #include "glsl/GrGLSLProgramDataManager.h"
+#include "glsl/GrGLSLUniformHandler.h"
 
 // The effects defined here only handle rrect radii >= kRadiusMin.
 static const SkScalar kRadiusMin = SK_ScalarHalf;
 
 //////////////////////////////////////////////////////////////////////////////
 
 class CircularRRectEffect : public GrFragmentProcessor {
 public:
 
     enum CornerFlags {
@@ skipping 114 matching lines @@
     SkRRect                               fPrevRRect;
     typedef GrGLSLFragmentProcessor INHERITED;
 };
 
 GLCircularRRectEffect::GLCircularRRectEffect(const GrProcessor& ) {
     fPrevRRect.setEmpty();
 }
 
 void GLCircularRRectEffect::emitCode(EmitArgs& args) {
     const CircularRRectEffect& crre = args.fFp.cast<CircularRRectEffect>();
+    GrGLSLUniformHandler* uniformHandler = args.fUniformHandler;
     const char *rectName;
     const char *radiusPlusHalfName;
     // The inner rect is the rrect bounds inset by the radius. Its left, top, right, and bottom
     // edges correspond to components x, y, z, and w, respectively. When a side of the rrect has
     // only rectangular corners, that side's value corresponds to the rect edge's value outset by
     // half a pixel.
-    fInnerRectUniform = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragment_Visibility,
-                                                  kVec4f_GrSLType, kDefault_GrSLPrecision,
-                                                  "innerRect",
-                                                  &rectName);
-    fRadiusPlusHalfUniform = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragment_Visibility,
-                                                       kFloat_GrSLType, kDefault_GrSLPrecision,
-                                                       "radiusPlusHalf",
-                                                       &radiusPlusHalfName);
+    fInnerRectUniform = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+                                                   kVec4f_GrSLType, kDefault_GrSLPrecision,
+                                                   "innerRect",
+                                                   &rectName);
+    fRadiusPlusHalfUniform = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+                                                        kFloat_GrSLType, kDefault_GrSLPrecision,
+                                                        "radiusPlusHalf",
+                                                        &radiusPlusHalfName);
 
     GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder;
     const char* fragmentPos = fragBuilder->fragmentPosition();
     // At each quarter-circle corner we compute a vector that is the offset of the fragment position
     // from the circle center. The vector is pinned in x and y to be in the quarter-plane relevant
     // to that corner. This means that points near the interior near the rrect top edge will have
     // a vector that points straight up for both the TL left and TR corners. Computing an
     // alpha from this vector at either the TR or TL corner will give the correct result. Similarly,
     // fragments near the other three edges will get the correct AA. Fragments in the interior of
     // the rrect will have a (0,0) vector at all four corners. So long as the radius > 0.5 they will
@@ skipping 320 matching lines @@
     SkRRect                               fPrevRRect;
     typedef GrGLSLFragmentProcessor INHERITED;
 };
 
 GLEllipticalRRectEffect::GLEllipticalRRectEffect(const GrProcessor& effect) {
     fPrevRRect.setEmpty();
 }
 
 void GLEllipticalRRectEffect::emitCode(EmitArgs& args) {
     const EllipticalRRectEffect& erre = args.fFp.cast<EllipticalRRectEffect>();
+    GrGLSLUniformHandler* uniformHandler = args.fUniformHandler;
     const char *rectName;
     // The inner rect is the rrect bounds inset by the x/y radii
-    fInnerRectUniform = args.fBuilder->addUniform(GrGLSLProgramBuilder::kFragment_Visibility,
-                                            kVec4f_GrSLType, kDefault_GrSLPrecision,
-                                            "innerRect",
-                                            &rectName);
+    fInnerRectUniform = uniformHandler->addUniform(GrGLSLUniformHandler::kFragment_Visibility,
+                                                   kVec4f_GrSLType, kDefault_GrSLPrecision,
+                                                   "innerRect",
+                                                   &rectName);
 
     GrGLSLFragmentBuilder* fragBuilder = args.fFragBuilder;
     const char* fragmentPos = fragBuilder->fragmentPosition();
     // At each quarter-ellipse corner we compute a vector that is the offset of the fragment pos
     // to the ellipse center. The vector is pinned in x and y to be in the quarter-plane relevant
     // to that corner. This means that points near the interior near the rrect top edge will have
     // a vector that points straight up for both the TL left and TR corners. Computing an
     // alpha from this vector at either the TR or TL corner will give the correct result. Similarly,
     // fragments near the other three edges will get the correct AA. Fragments in the interior of
     // the rrect will have a (0,0) vector at all four corners. So long as the radii > 0.5 they will
     // correctly produce an alpha value of 1 at all four corners. We take the min of all the alphas.
     //
     // The code below is a simplified version of the above that performs maxs on the vector
     // components before computing distances and alpha values so that only one distance computation
     // need be computed to determine the min alpha.
     fragBuilder->codeAppendf("\t\tvec2 dxy0 = %s.xy - %s.xy;\n", rectName, fragmentPos);
     fragBuilder->codeAppendf("\t\tvec2 dxy1 = %s.xy - %s.zw;\n", fragmentPos, rectName);
     // The uniforms with the inv squared radii are highp to prevent underflow.
     switch (erre.getRRect().getType()) {
         case SkRRect::kSimple_Type: {
             const char *invRadiiXYSqdName;
-            fInvRadiiSqdUniform = args.fBuilder->addUniform(
-                                                         GrGLSLProgramBuilder::kFragment_Visibility,
+            fInvRadiiSqdUniform = uniformHandler->addUniform(
+                                                         GrGLSLUniformHandler::kFragment_Visibility,
                                                          kVec2f_GrSLType, kHigh_GrSLPrecision,
                                                          "invRadiiXY",
                                                          &invRadiiXYSqdName);
             fragBuilder->codeAppend("\t\tvec2 dxy = max(max(dxy0, dxy1), 0.0);\n");
             // Z is the x/y offsets divided by squared radii.
             fragBuilder->codeAppendf("\t\tvec2 Z = dxy * %s;\n", invRadiiXYSqdName);
             break;
         }
         case SkRRect::kNinePatch_Type: {
             const char *invRadiiLTRBSqdName;
-            fInvRadiiSqdUniform = args.fBuilder->addUniform(
-                                                         GrGLSLProgramBuilder::kFragment_Visibility,
+            fInvRadiiSqdUniform = uniformHandler->addUniform(
+                                                         GrGLSLUniformHandler::kFragment_Visibility,
                                                          kVec4f_GrSLType, kHigh_GrSLPrecision,
                                                          "invRadiiLTRB",
                                                          &invRadiiLTRBSqdName);
             fragBuilder->codeAppend("\t\tvec2 dxy = max(max(dxy0, dxy1), 0.0);\n");
             // Z is the x/y offsets divided by squared radii. We only care about the (at most) one
             // corner where both the x and y offsets are positive, hence the maxes. (The inverse
             // squared radii will always be positive.)
             fragBuilder->codeAppendf("\t\tvec2 Z = max(max(dxy0 * %s.xy, dxy1 * %s.zw), 0.0);\n",
                                      invRadiiLTRBSqdName, invRadiiLTRBSqdName);
             break;
@@ skipping 165 matching lines @@
                 if (rrect.isNinePatch()) {
                     return EllipticalRRectEffect::Create(edgeType, rrect);
                 }
                 return nullptr;
             }
         }
     }
 
     return nullptr;
 }