Add GrEllipseEdgeEffect

src/gpu/GrContext.cpp

 
 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrContext.h"
 
 #include "effects/GrConvolutionEffect.h"
 #include "effects/GrSingleTextureEffect.h"
 #include "effects/GrConfigConversionEffect.h"
+#include "effects/GrEllipseEdgeEffect.h"
 
 #include "GrBufferAllocPool.h"
 #include "GrGpu.h"
 #include "GrIndexBuffer.h"
 #include "GrInOrderDrawBuffer.h"
 #include "GrPathRenderer.h"
 #include "GrPathUtils.h"
 #include "GrResourceCache.h"
 #include "GrSoftwarePathRenderer.h"
 #include "GrStencilBuffer.h"
@@ skipping 1052 matching lines @@
     GrDrawState::AutoDeviceCoordDraw adcd(drawState);
     if (!adcd.succeeded()) {
         return;
     }
 
     // position + edge
     static const GrVertexAttrib kVertexAttribs[] = {
         {kVec2f_GrVertexAttribType, 0},
         {kVec4f_GrVertexAttribType, sizeof(GrPoint)}
     };
-    static const GrAttribBindings kAttributeBindings = GrDrawState::kEdge_AttribBindingsBit;
-
     drawState->setVertexAttribs(kVertexAttribs, SK_ARRAY_COUNT(kVertexAttribs));
     drawState->setAttribIndex(GrDrawState::kPosition_AttribIndex, 0);
-    drawState->setAttribIndex(GrDrawState::kEdge_AttribIndex, 1);
-    drawState->setAttribBindings(kAttributeBindings);
     GrAssert(sizeof(CircleVertex) == drawState->getVertexSize());
 
     GrDrawTarget::AutoReleaseGeometry geo(target, 4, 0);
     if (!geo.succeeded()) {
         GrPrintf("Failed to get space for vertices!\n");
         return;
     }
 
     CircleVertex* verts = reinterpret_cast<CircleVertex*>(geo.vertices());
 
     GrPoint center = GrPoint::Make(oval.centerX(), oval.centerY());
     vm.mapPoints(&center, 1);
 
     SkScalar L;
     SkScalar R;
     SkScalar T;
     SkScalar B;
 
     if (isCircle) {
+        drawState->setAttribBindings(GrDrawState::kEdge_AttribBindingsBit);
         drawState->setVertexEdgeType(GrDrawState::kCircle_EdgeType);
+        drawState->setAttribIndex(GrDrawState::kEdge_AttribIndex, 1);
 
         xRadius = vm.mapRadius(xRadius);
 
         SkScalar outerRadius = xRadius;
         SkScalar innerRadius = 0;
         SkScalar halfWidth = 0;
         if (style != SkStrokeRec::kFill_Style) {
             strokeWidth = vm.mapRadius(strokeWidth);
             if (SkScalarNearlyZero(strokeWidth)) {
                 halfWidth = SK_ScalarHalf;
@@ skipping 11 matching lines @@
             verts[i].fCenter = center;
             verts[i].fOuterRadius = outerRadius;
             verts[i].fInnerRadius = innerRadius;
         }
 
         L = -outerRadius;
         R = +outerRadius;
         T = -outerRadius;
         B = +outerRadius;
     } else {  // is axis-aligned ellipse
-        drawState->setVertexEdgeType(GrDrawState::kEllipse_EdgeType);
+        drawState->setAttribBindings(GrDrawState::kDefault_AttribBindings);
+
+        enum {
+            // the edge effects share this stage with glyph rendering 
+            // (kGlyphMaskStage in GrTextContext) && SW path rendering 
+            // (kPathMaskStage in GrSWMaskHelper)
+            kEdgeEffectStage = GrPaint::kTotalStages,
+        };
+        GrEffectRef* effect = GrEllipseEdgeEffect::Create();
+        int edgeAttrIndex = 1;

[bsalomon, 2013/03/07 15:59:13]

static const?

[jvanverth1, 2013/03/07 22:00:44]

Done.

+        drawState->setEffect(kEdgeEffectStage, effect, &edgeAttrIndex)->unref();
 
         SkRect xformedRect;
         vm.mapRect(&xformedRect, oval);
 
         xRadius = SkScalarHalf(xformedRect.width());
         yRadius = SkScalarHalf(xformedRect.height());
 
         if (style == SkStrokeRec::kStrokeAndFill_Style && strokeWidth > 0.0f) {
             SkScalar halfWidth = SkScalarHalf(strokeWidth);
             // do (potentially) anisotropic mapping
@@ skipping 837 matching lines @@
         return srcTexture;
     }
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 #if GR_CACHE_STATS
 void GrContext::printCacheStats() const {
     fTextureCache->printStats();
 }
 #endif