Add runtime flag to turn compressed alpha masks on

gm/gmmain.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.
  */
 
 /*
  * Code for the "gm" (Golden Master) rendering comparison tool.
  *
@@ skipping 1420 matching lines @@
 DEFINE_bool(forceBWtext, false, "Disable text anti-aliasing.");
 #if SK_SUPPORT_GPU
 DEFINE_string(gpuAPI, "", "Force use of specific gpu API.  Using \"gl\" "
               "forces OpenGL API. Using \"gles\" forces OpenGL ES API. "
               "Defaults to empty string, which selects the API native to the "
               "system.");
 DEFINE_string(gpuCacheSize, "", "<bytes> <count>: Limit the gpu cache to byte size or "
               "object count. " TOSTRING(DEFAULT_CACHE_VALUE) " for either value means "
               "use the default. 0 for either disables the cache.");
 DEFINE_bool(gpu, true, "Allows GPU configs to be run. Applied after --config.");
+DEFINE_bool(gpuCompressAlphaMasks, false, "Compress masks generated from falling back to "
+                                          "software path rendering.");
 #endif
 DEFINE_bool(hierarchy, false, "Whether to use multilevel directory structure "
             "when reading/writing files.");
 DEFINE_string(ignoreErrorTypes, kDefaultIgnorableErrorTypes.asString(" ").c_str(),
               "Space-separated list of ErrorTypes that should be ignored. If any *other* error "
               "types are encountered, the tool will exit with a nonzero return value.");
 DEFINE_string(ignoreFailuresFile, "", "Path to file containing a list of tests for which we "
               "should ignore failures.\n"
               "The file should list one test per line, except for comment lines starting with #");
 DEFINE_bool2(leaks, l, false, "show leaked ref cnt'd objects.");
@@ skipping 826 matching lines @@
     GMMain gmmain;
 
     SkTDArray<size_t> configs;
 
     int moduloRemainder = -1;
     int moduloDivisor = -1;
     SkTDArray<const PDFRasterizerData*> pdfRasterizers;
     SkTDArray<SkScalar> tileGridReplayScales;
 #if SK_SUPPORT_GPU
     GrGLStandard gpuAPI = kNone_GrGLStandard;
-    GrContextFactory* grFactory = new GrContextFactory(GrContext::Options());
+    GrContext::Options grContextOpts;
+    grContextOpts.fDrawPathToCompressedTexture = FLAGS_gpuCompressAlphaMasks;
+    GrContextFactory* grFactory = new GrContextFactory(grContextOpts);
 #else
     GrGLStandard gpuAPI = 0;
     GrContextFactory* grFactory = NULL;
 #endif
 
     if (FLAGS_dryRun) {
         SkDebugf( "Doing a dry run; no tests will actually be executed.\n");
     }
 
     if (!parse_flags_modulo(&moduloRemainder, &moduloDivisor) ||
@@ skipping 196 matching lines @@
     if (FLAGS_forceBWtext) {
         canvas->setDrawFilter(SkNEW(BWTextDrawFilter))->unref();
     }
 }
 
 #if !defined(SK_BUILD_FOR_IOS) && !defined(SK_BUILD_FOR_NACL)
 int main(int argc, char * const argv[]) {
     return tool_main(argc, (char**) argv);
 }
 #endif