Use NV_draw_buffers to implement EXT_draw_buffers

gpu/command_buffer/service/feature_info_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gpu/command_buffer/service/feature_info.h"
 
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string_number_conversions.h"
 #include "gpu/command_buffer/service/gpu_service_test.h"
@@ skipping 105 matching lines @@
   EXPECT_FALSE(info_->feature_flags().arb_texture_rectangle);
   EXPECT_FALSE(info_->feature_flags().angle_instanced_arrays);
   EXPECT_FALSE(info_->feature_flags().occlusion_query_boolean);
   EXPECT_FALSE(info_->feature_flags(
       ).use_arb_occlusion_query2_for_occlusion_query_boolean);
   EXPECT_FALSE(info_->feature_flags(
       ).use_arb_occlusion_query_for_occlusion_query_boolean);
   EXPECT_FALSE(info_->feature_flags().native_vertex_array_object);
   EXPECT_FALSE(info_->feature_flags().map_buffer_range);
   EXPECT_FALSE(info_->feature_flags().use_async_readpixels);
+  EXPECT_FALSE(info_->feature_flags().ext_draw_buffers);
+  EXPECT_FALSE(info_->feature_flags().nv_draw_buffers);
   EXPECT_FALSE(info_->feature_flags().ext_discard_framebuffer);
   EXPECT_FALSE(info_->feature_flags().angle_depth_texture);
   EXPECT_FALSE(info_->feature_flags().is_angle);
 
 #define GPU_OP(type, name) EXPECT_FALSE(info_->workarounds().name);
   GPU_DRIVER_BUG_WORKAROUNDS(GPU_OP)
 #undef GPU_OP
   EXPECT_EQ(0, info_->workarounds().max_texture_size);
   EXPECT_EQ(0, info_->workarounds().max_cube_map_texture_size);
 
@@ skipping 1111 matching lines @@
   EXPECT_TRUE(info_->feature_flags().chromium_sync_query);
   EXPECT_TRUE(gfx::GLFence::IsSupported());
 }
 
 TEST_F(FeatureInfoTest, InitializeWithNVFence) {
   SetupInitExpectations("GL_NV_fence");
   EXPECT_TRUE(info_->feature_flags().chromium_sync_query);
   EXPECT_TRUE(gfx::GLFence::IsSupported());
 }
 
+TEST_F(FeatureInfoTest, InitializeWithNVDrawBuffers) {
+  SetupInitExpectationsWithGLVersion("GL_NV_draw_buffers", "", "OpenGL ES 3.0");
+  EXPECT_TRUE(info_->feature_flags().nv_draw_buffers);
+  EXPECT_TRUE(info_->feature_flags().ext_draw_buffers);
+}
+
+TEST_F(FeatureInfoTest, InitializeWithPreferredEXTDrawBuffers) {
+  SetupInitExpectationsWithGLVersion(
+      "GL_NV_draw_buffers GL_EXT_draw_buffers", "", "OpenGL ES 3.0");
+  EXPECT_FALSE(info_->feature_flags().nv_draw_buffers);
+  EXPECT_TRUE(info_->feature_flags().ext_draw_buffers);
+}
+
 TEST_F(FeatureInfoTest, ARBSyncDisabled) {
   CommandLine command_line(0, NULL);
   command_line.AppendSwitchASCII(
       switches::kGpuDriverBugWorkarounds,
       base::IntToString(gpu::DISABLE_ARB_SYNC));
   SetupInitExpectationsWithCommandLine("GL_ARB_sync", command_line);
   EXPECT_FALSE(info_->feature_flags().chromium_sync_query);
   EXPECT_FALSE(gfx::GLFence::IsSupported());
 }
 
@@ skipping 20 matching lines @@
 
 TEST_F(FeatureInfoTest, InitializeNoCHROMIUM_path_rendering2) {
   SetupInitExpectationsWithGLVersion("GL_NV_path_rendering", "", "4.3");
   EXPECT_FALSE(info_->feature_flags().chromium_path_rendering);
   EXPECT_THAT(info_->extensions(),
               Not(HasSubstr("GL_CHROMIUM_path_rendering")));
 }
 
 }  // namespace gles2
 }  // namespace gpu