Use high precision vertex attributes.

src/gpu/effects/GrDistanceFieldGeoProc.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrDistanceFieldGeoProc.h"
 #include "GrFontAtlasSizes.h"
 #include "GrInvariantOutput.h"
@@ skipping 187 matching lines @@
     , fViewMatrix(viewMatrix)
     , fTextureAccess(texture, params)
 #ifdef SK_GAMMA_APPLY_TO_A8
     , fDistanceAdjust(distanceAdjust)
 #endif
     , fFlags(flags & kNonLCD_DistanceFieldEffectMask)
     , fInColor(NULL)
     , fUsesLocalCoords(usesLocalCoords) {
     SkASSERT(!(flags & ~kNonLCD_DistanceFieldEffectMask));
     this->initClassID<GrDistanceFieldA8TextGeoProc>();
-    fInPosition = &this->addVertexAttrib(Attribute("inPosition", kVec2f_GrVertexAttribType));
+    fInPosition = &this->addVertexAttrib(Attribute("inPosition", kVec2f_GrVertexAttribType,
+                                                   kHigh_GrSLPrecision));
     if (flags & kColorAttr_DistanceFieldEffectFlag) {
         fInColor = &this->addVertexAttrib(Attribute("inColor", kVec4ub_GrVertexAttribType));
     }
     fInTextureCoords = &this->addVertexAttrib(Attribute("inTextureCoords",
                                                           kVec2s_GrVertexAttribType));
     this->addTextureAccess(&fTextureAccess);
 }
 
 void GrDistanceFieldA8TextGeoProc::getGLProcessorKey(const GrBatchTracker& bt,
                                                      const GrGLSLCaps& caps,
@@ skipping 194 matching lines @@
         uint32_t flags,
         bool usesLocalCoords)
     : fColor(color)
     , fViewMatrix(viewMatrix)
     , fTextureAccess(texture, params)
     , fFlags(flags & kNonLCD_DistanceFieldEffectMask)
     , fInColor(NULL)
     , fUsesLocalCoords(usesLocalCoords) {
     SkASSERT(!(flags & ~kNonLCD_DistanceFieldEffectMask));
     this->initClassID<GrDistanceFieldPathGeoProc>();
-    fInPosition = &this->addVertexAttrib(Attribute("inPosition", kVec2f_GrVertexAttribType));
+    fInPosition = &this->addVertexAttrib(Attribute("inPosition", kVec2f_GrVertexAttribType,
+                                                   kHigh_GrSLPrecision));
     if (flags & kColorAttr_DistanceFieldEffectFlag) {
         fInColor = &this->addVertexAttrib(Attribute("inColor", kVec4ub_GrVertexAttribType));
     }
     fInTextureCoords = &this->addVertexAttrib(Attribute("inTextureCoords",
                                                         kVec2f_GrVertexAttribType));
     this->addTextureAccess(&fTextureAccess);
 }
 
 void GrDistanceFieldPathGeoProc::getGLProcessorKey(const GrBatchTracker& bt,
                                                    const GrGLSLCaps& caps,
@@ skipping 233 matching lines @@
                                                   DistanceAdjust distanceAdjust,
                                                   uint32_t flags, bool usesLocalCoords)
     : fColor(color)
     , fViewMatrix(viewMatrix)
     , fTextureAccess(texture, params)
     , fDistanceAdjust(distanceAdjust)
     , fFlags(flags & kLCD_DistanceFieldEffectMask)
     , fUsesLocalCoords(usesLocalCoords) {
     SkASSERT(!(flags & ~kLCD_DistanceFieldEffectMask) && (flags & kUseLCD_DistanceFieldEffectFlag));
     this->initClassID<GrDistanceFieldLCDTextGeoProc>();
-    fInPosition = &this->addVertexAttrib(Attribute("inPosition", kVec2f_GrVertexAttribType));
+    fInPosition = &this->addVertexAttrib(Attribute("inPosition", kVec2f_GrVertexAttribType,
+                                                   kHigh_GrSLPrecision));
     fInTextureCoords = &this->addVertexAttrib(Attribute("inTextureCoords",
                                                         kVec2s_GrVertexAttribType));
     this->addTextureAccess(&fTextureAccess);
 }
 
 void GrDistanceFieldLCDTextGeoProc::getGLProcessorKey(const GrBatchTracker& bt,
                                                       const GrGLSLCaps& caps,
                                                       GrProcessorKeyBuilder* b) const {
     GrGLDistanceFieldLCDTextGeoProc::GenKey(*this, bt, caps, b);
 }
@@ skipping 29 matching lines @@
     uint32_t flags = kUseLCD_DistanceFieldEffectFlag;
     flags |= random->nextBool() ? kUniformScale_DistanceFieldEffectMask : 0;
     flags |= random->nextBool() ? kBGR_DistanceFieldEffectFlag : 0;
     return GrDistanceFieldLCDTextGeoProc::Create(GrRandomColor(random),
                                                  GrTest::TestMatrix(random),
                                                  textures[texIdx], params,
                                                  wa,
                                                  flags,
                                                  random->nextBool());
 }