gpu: Upgrade DEPTH_COMPONENT16 to DEPTH_COMPONENT24 if possible

Upgrade the DEPTH_COMPONENT16 render buffer storage format to
DEPTH_COMPONENT24 if the GLES implementation supports the OES_depth24
extension. This is done to improve content portability between desktop
and mobile, since we already do a similar mapping from DEPTH_COMPONENT16
to the unsized DEPTH_COMPONENT on desktop GL. This means that for
example WebGL content can end up relying on a higher precision depth
buffer even though it only requested DEPTH_COMPONENT16.

BUG=285400
TEST=http://www.khronos.org/registry/webgl/conformance-suites/1.0.1/webgl-conformance-tests.html on Nexus 4

Review URL: https://chromiumcodereview.appspot.com/24079010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@224117 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 13 insertions, 22 deletions

diff --git a/gpu/command_buffer/service/framebuffer_manager_unittest.cc b/gpu/command_buffer/service/framebuffer_manager_unittest.cc
index a2c8aeb..0793258 100644
--- a/gpu/command_buffer/service/framebuffer_manager_unittest.cc
+++ b/gpu/command_buffer/service/framebuffer_manager_unittest.cc
@@ -15,19 +15,24 @@ using ::testing::Return;
 
 namespace gpu {
 namespace gles2 {
+namespace {
 
-class FramebufferManagerTest : public testing::Test {
- static const GLint kMaxTextureSize = 64;
- static const GLint kMaxCubemapSize = 64;
- static const GLint kMaxRenderbufferSize = 64;
- static const GLint kMaxSamples = 4;
+const GLint kMaxTextureSize = 64;
+const GLint kMaxCubemapSize = 64;
+const GLint kMaxRenderbufferSize = 64;
+const GLint kMaxSamples = 4;
+const bool kDepth24Supported = false;
+
+}  // namespace
 
+class FramebufferManagerTest : public testing::Test {
  public:
   FramebufferManagerTest()
       : manager_(1, 1),
         texture_manager_(
           NULL, new FeatureInfo(), kMaxTextureSize, kMaxCubemapSize),
-        renderbuffer_manager_(NULL, kMaxRenderbufferSize, kMaxSamples) {
+        renderbuffer_manager_(NULL, kMaxRenderbufferSize, kMaxSamples,
+                              kDepth24Supported) {
 
   }
   virtual ~FramebufferManagerTest() {
@@ -54,13 +59,6 @@ class FramebufferManagerTest : public testing::Test {
   RenderbufferManager renderbuffer_manager_;
 };
 
-// GCC requires these declarations, but MSVC requires they not be present
-#ifndef COMPILER_MSVC
-const GLint FramebufferManagerTest::kMaxTextureSize;
-const GLint FramebufferManagerTest::kMaxCubemapSize;
-const GLint FramebufferManagerTest::kMaxRenderbufferSize;
-#endif
-
 TEST_F(FramebufferManagerTest, Basic) {
   const GLuint kClient1Id = 1;
   const GLuint kService1Id = 11;
@@ -110,16 +108,12 @@ class FramebufferInfoTest : public testing::Test {
   static const GLuint kClient1Id = 1;
   static const GLuint kService1Id = 11;
 
-  static const GLint kMaxTextureSize = 64;
-  static const GLint kMaxCubemapSize = 64;
-  static const GLint kMaxRenderbufferSize = 64;
-  static const GLint kMaxSamples = 4;
-
   FramebufferInfoTest()
       : manager_(1, 1),
         texture_manager_(
           NULL, new FeatureInfo(), kMaxTextureSize, kMaxCubemapSize),
-        renderbuffer_manager_(NULL, kMaxRenderbufferSize, kMaxSamples) {
+        renderbuffer_manager_(NULL, kMaxRenderbufferSize, kMaxSamples,
+                              kDepth24Supported) {
   }
   virtual ~FramebufferInfoTest() {
     manager_.Destroy(false);
@@ -155,9 +149,6 @@ class FramebufferInfoTest : public testing::Test {
 #ifndef COMPILER_MSVC
 const GLuint FramebufferInfoTest::kClient1Id;
 const GLuint FramebufferInfoTest::kService1Id;
-const GLint FramebufferInfoTest::kMaxTextureSize;
-const GLint FramebufferInfoTest::kMaxCubemapSize;
-const GLint FramebufferInfoTest::kMaxRenderbufferSize;
 #endif
 
 TEST_F(FramebufferInfoTest, Basic) {