Make ANGLE perf decisions be runtime rather than compile time

src/gpu/gl/GrGLGpu.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 "GrGLGpu.h"
 #include "GrGLGLSL.h"
@@ skipping 524 matching lines @@
     tempDrawInfo->fTempSurfaceDesc.fSampleCnt = 0;
     tempDrawInfo->fTempSurfaceDesc.fOrigin = kTopLeft_GrSurfaceOrigin; // no CPU y-flip for TL.
 
     bool configsAreRBSwaps = GrPixelConfigSwapRAndB(srcConfig) == dstSurface->config();
 
     if (configsAreRBSwaps) {
         if (!this->caps()->isConfigTexturable(srcConfig)) {
             ElevateDrawPreference(drawPreference, kRequireDraw_DrawPreference);
             tempDrawInfo->fTempSurfaceDesc.fConfig = dstSurface->config();
             tempDrawInfo->fSwapRAndB = true;
-        } else if (GR_GL_RGBA_8888_PIXEL_OPS_SLOW && kRGBA_8888_GrPixelConfig == srcConfig) {
+        } else if (this->glCaps().rgba8888PixelsOpsAreSlow() &&
+                   kRGBA_8888_GrPixelConfig == srcConfig) {
             ElevateDrawPreference(drawPreference, kGpuPrefersDraw_DrawPreference);
             tempDrawInfo->fTempSurfaceDesc.fConfig = dstSurface->config();
             tempDrawInfo->fSwapRAndB = true;
         } else if (kGLES_GrGLStandard == this->glStandard() &&
                    this->glCaps().bgraIsInternalFormat()) {
             // The internal format and external formats must match texture uploads so we can't
             // swizzle while uploading when BGRA is a distinct internal format.
             ElevateDrawPreference(drawPreference, kRequireDraw_DrawPreference);
             tempDrawInfo->fTempSurfaceDesc.fConfig = dstSurface->config();
             tempDrawInfo->fSwapRAndB = true;
@@ skipping 1198 matching lines @@
 
     tempDrawInfo->fSwapRAndB = false;
 
     // These settings we will always want if a temp draw is performed. The config is set below
     // depending on whether we want to do a R/B swap or not.
     tempDrawInfo->fTempSurfaceDesc.fFlags = kRenderTarget_GrSurfaceFlag;
     tempDrawInfo->fTempSurfaceDesc.fWidth = width;
     tempDrawInfo->fTempSurfaceDesc.fHeight = height;
     tempDrawInfo->fTempSurfaceDesc.fSampleCnt = 0;
     tempDrawInfo->fTempSurfaceDesc.fOrigin = kTopLeft_GrSurfaceOrigin; // no CPU y-flip for TL.
-    tempDrawInfo->fUseExactScratch = SkToBool(GR_GL_FULL_READPIXELS_FASTER_THAN_PARTIAL) &&
+    tempDrawInfo->fUseExactScratch = this->glCaps().partialFBOReadIsSlow() &&
                                      width >= this->caps()->minTextureSize() &&
                                      height >= this->caps()->minTextureSize();
 
     // Start off assuming that any temp draw should be to the readConfig, then check if that will
     // be inefficient.
     GrPixelConfig srcConfig = srcSurface->config();
     tempDrawInfo->fTempSurfaceDesc.fConfig = readConfig;
 
-    if (GR_GL_RGBA_8888_PIXEL_OPS_SLOW && kRGBA_8888_GrPixelConfig == readConfig) {
+    if (this->glCaps().rgba8888PixelsOpsAreSlow() && kRGBA_8888_GrPixelConfig == readConfig) {
         tempDrawInfo->fTempSurfaceDesc.fConfig = kBGRA_8888_GrPixelConfig;
         tempDrawInfo->fSwapRAndB = true;
         ElevateDrawPreference(drawPreference, kGpuPrefersDraw_DrawPreference);
     } else if (kMesa_GrGLDriver == this->glContext().driver() &&
                GrBytesPerPixel(readConfig) == 4 &&
                GrPixelConfigSwapRAndB(readConfig) == srcConfig) {
         // Mesa 3D takes a slow path on when reading back  BGRA from an RGBA surface and vice-versa.
         // Better to do a draw with a R/B swap and then read as the original config.
         tempDrawInfo->fTempSurfaceDesc.fConfig = srcConfig;
         tempDrawInfo->fSwapRAndB = true;
@@ skipping 1428 matching lines @@
             this->setVertexArrayID(gpu, 0);
         }
         int attrCount = gpu->glCaps().maxVertexAttributes();
         if (fDefaultVertexArrayAttribState.count() != attrCount) {
             fDefaultVertexArrayAttribState.resize(attrCount);
         }
         attribState = &fDefaultVertexArrayAttribState;
     }
     return attribState;
 }