Implement support for rendering to 32-bit float textures on ES3

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_switches.h"
@@ skipping 262 matching lines @@
       GL_MAX_SAMPLES_EXT));
   EXPECT_FALSE(info_->validators()->texture_internal_format.IsValid(
       GL_DEPTH_COMPONENT));
   EXPECT_FALSE(info_->validators()->texture_format.IsValid(GL_DEPTH_COMPONENT));
   EXPECT_FALSE(info_->validators()->pixel_type.IsValid(GL_UNSIGNED_SHORT));
   EXPECT_FALSE(info_->validators()->pixel_type.IsValid(GL_UNSIGNED_INT));
   EXPECT_FALSE(info_->validators()->render_buffer_format.IsValid(
       GL_DEPTH24_STENCIL8));
   EXPECT_FALSE(info_->validators()->texture_internal_format.IsValid(
       GL_DEPTH_STENCIL));
+  EXPECT_FALSE(info_->validators()->texture_internal_format.IsValid(
+      GL_RGBA32F));
+  EXPECT_FALSE(info_->validators()->texture_internal_format.IsValid(
+      GL_RGB32F));
   EXPECT_FALSE(info_->validators()->texture_format.IsValid(
       GL_DEPTH_STENCIL));
   EXPECT_FALSE(info_->validators()->pixel_type.IsValid(
       GL_UNSIGNED_INT_24_8));
   EXPECT_FALSE(info_->validators()->render_buffer_format.IsValid(
       GL_DEPTH_COMPONENT24));
   EXPECT_FALSE(info_->validators()->texture_parameter.IsValid(
       GL_TEXTURE_USAGE_ANGLE));
   EXPECT_FALSE(info_->validators()->texture_internal_format_storage.IsValid(
       GL_DEPTH_COMPONENT16));
@@ skipping 107 matching lines @@
   EXPECT_FALSE(info_->validators()->texture_format.IsValid(
       GL_BGRA_EXT));
   EXPECT_FALSE(info_->validators()->texture_internal_format.IsValid(
       GL_BGRA_EXT));
   EXPECT_TRUE(info_->validators()->read_pixel_format.IsValid(
       GL_BGRA_EXT));
   EXPECT_FALSE(info_->validators()->render_buffer_format.IsValid(
       GL_BGRA8_EXT));
 }
 
+TEST_F(FeatureInfoTest, InitializeARB_texture_float) {
+  SetupInitExpectations("GL_ARB_texture_float");
+  EXPECT_TRUE(info_->feature_flags().chromium_color_buffer_float_rgba);
+  EXPECT_TRUE(info_->feature_flags().chromium_color_buffer_float_rgb);
+  std::string extensions = info_->extensions() + " ";
+  EXPECT_THAT(extensions, HasSubstr("GL_CHROMIUM_color_buffer_float_rgb "));
+  EXPECT_THAT(extensions, HasSubstr("GL_CHROMIUM_color_buffer_float_rgba"));
+  EXPECT_TRUE(info_->validators()->texture_internal_format.IsValid(
+      GL_RGBA32F));
+  EXPECT_TRUE(info_->validators()->texture_internal_format.IsValid(
+      GL_RGB32F));
+}
+
 TEST_F(FeatureInfoTest, InitializeOES_texture_floatGLES2) {
   SetupInitExpectations("GL_OES_texture_float");
   EXPECT_FALSE(info_->feature_flags().enable_texture_float_linear);
   EXPECT_FALSE(info_->feature_flags().enable_texture_half_float_linear);
   EXPECT_THAT(info_->extensions(), HasSubstr("GL_OES_texture_float"));
   EXPECT_THAT(info_->extensions(), Not(HasSubstr("GL_OES_texture_half_float")));
   EXPECT_THAT(info_->extensions(),
               Not(HasSubstr("GL_OES_texture_float_linear")));
   EXPECT_THAT(info_->extensions(),
               Not(HasSubstr("GL_OES_texture_half_float_linear")));
@@ skipping 550 matching lines @@
       base::IntToString(gpu::MAX_TEXTURE_SIZE_LIMIT_4096));
   // Workarounds should get parsed without the need for a context.
   SetupWithCommandLine(command_line);
   EXPECT_TRUE(info_->workarounds().exit_on_context_lost);
   EXPECT_EQ(1024, info_->workarounds().max_cube_map_texture_size);
   EXPECT_EQ(4096, info_->workarounds().max_texture_size);
 }
 
 }  // namespace gles2
 }  // namespace gpu