Round stencil buffers dims up to next pow2 when allowed

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 389 matching lines @@
     } else if (GrGLCaps::kNone_MSFBOType != fMSFBOType) {
         GR_GL_GetIntegerv(gli, GR_GL_MAX_SAMPLES, &fMaxSampleCount);
     }
 
     if (kPowerVR54x_GrGLRenderer == ctxInfo.renderer() ||
         kPowerVRRogue_GrGLRenderer == ctxInfo.renderer() ||
         kAdreno3xx_GrGLRenderer == ctxInfo.renderer()) {
         fUseDrawInsteadOfClear = true;
     }
 
+    if (kGL_GrGLStandard == standard) {
+        // ARB allows mixed size FBO attachments, EXT does not.
+        if (ctxInfo.version() >= GR_GL_VER(3, 0) ||
+            ctxInfo.hasExtension("GL_ARB_framebuffer_object")) {
+            fOversizedStencilSupport = true;
+        } else {
+            SkASSERT(ctxInfo.hasExtension("GL_EXT_framebuffer_object"));
+        }
+    } else {
+        // ES 3.0 supports mixed size FBO attachments, 2.0 does not.
+        fOversizedStencilSupport = ctxInfo.version() >= GR_GL_VER(3, 0);
+    }
+
     this->initConfigTexturableTable(ctxInfo, gli);
     this->initConfigRenderableTable(ctxInfo);
 
     this->initShaderPrecisionTable(ctxInfo, gli);
 
     return true;
 }
 
 void GrGLCaps::initConfigRenderableTable(const GrGLContextInfo& ctxInfo) {
     // OpenGL < 3.0
@@ skipping 622 matching lines @@
     r.appendf("Two Format Limit: %s\n", (fTwoFormatLimit ? "YES": "NO"));
     r.appendf("Fragment coord conventions support: %s\n",
              (fFragCoordsConventionSupport ? "YES": "NO"));
     r.appendf("Vertex array object support: %s\n", (fVertexArrayObjectSupport ? "YES": "NO"));
     r.appendf("Use non-VBO for dynamic data: %s\n",
              (fUseNonVBOVertexAndIndexDynamicData ? "YES" : "NO"));
     r.appendf("Full screen clear is free: %s\n", (fFullClearIsFree ? "YES" : "NO"));
     r.appendf("Drops tile on zero divide: %s\n", (fDropsTileOnZeroDivide ? "YES" : "NO"));
     return r;
 }