Infer sampler precision from pixel config

src/gpu/gl/GrGLCaps.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrGLCaps.h"
 
@@ skipping 1179 matching lines @@
     // GetShaderPrecisionFormat doesn't accept GL_GEOMETRY_SHADER as a shader type. Assume they're
     // the same as the vertex shader. Only fragment shaders were ever allowed to omit support for
     // highp. GS was added after GetShaderPrecisionFormat was added to the list of features that
     // are recommended against.
     if (glslCaps->fGeometryShaderSupport) {
         for (int p = 0; p < kGrSLPrecisionCount; ++p) {
             glslCaps->fFloatPrecisions[kGeometry_GrShaderType][p] =
                                                glslCaps->fFloatPrecisions[kVertex_GrShaderType][p];
         }
     }
+    glslCaps->initSamplerPrecisionTable();
 }
 
 bool GrGLCaps::bgraIsInternalFormat() const {
     return fConfigTable[kBGRA_8888_GrPixelConfig].fFormats.fBaseInternalFormat == GR_GL_BGRA;
 }
 
 bool GrGLCaps::getTexImageFormats(GrPixelConfig surfaceConfig, GrPixelConfig externalConfig,
                                   GrGLenum* internalFormat, GrGLenum* externalFormat,
                                   GrGLenum* externalType) const {
     if (!this->getExternalFormat(surfaceConfig, externalConfig, kTexImage_ExternalFormatUsage,
@@ skipping 664 matching lines @@
         for (int j = 0; j < kExternalFormatUsageCnt; ++j) {
             SkASSERT(defaultEntry.fFormats.fExternalFormat[j] !=
                      fConfigTable[i].fFormats.fExternalFormat[j]);
         }
         SkASSERT(defaultEntry.fFormats.fExternalType != fConfigTable[i].fFormats.fExternalType);
     }
 #endif
 }
 
 void GrGLCaps::onApplyOptionsOverrides(const GrContextOptions& options) {}