16 bpp video stream capture, render and WebGL usage - Realsense R200 & SR300 support.

gpu/command_buffer/service/gles2_cmd_decoder.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder.cc b/gpu/command_buffer/service/gles2_cmd_decoder.cc
index 68b894846bb0ff89ffbdd837869f1f4f0492aaf6..ada08a2ecd3f3127533cff7555360c1f5db7b4a3 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder.cc
@@ -10596,6 +10596,12 @@ error::Error GLES2DecoderImpl::HandleReadPixels(uint32_t immediate_data_size,
       accepted_formats.push_back(GL_RGBA);
       accepted_types.push_back(GL_UNSIGNED_INT_2_10_10_10_REV);
       break;
+    case GL_R32F:
+      if (validators_->read_pixel_format.IsValid(GL_RED)) {
+        accepted_formats.push_back(GL_RED);
+        accepted_types.push_back(GL_FLOAT);
+      }
+    // Fall through.
     default:
       accepted_formats.push_back(GL_RGBA);
       {
@@ -15015,7 +15021,10 @@ bool GLES2DecoderImpl::ValidateCopyTextureCHROMIUMInternalFormats(
       dest_internal_format == GL_RGB || dest_internal_format == GL_RGBA ||
       dest_internal_format == GL_RGB8 || dest_internal_format == GL_RGBA8 ||
       dest_internal_format == GL_BGRA_EXT ||
-      dest_internal_format == GL_BGRA8_EXT;
+      dest_internal_format == GL_BGRA8_EXT ||
+      ((dest_internal_format == GL_R16UI || dest_internal_format == GL_R8 ||
+        dest_internal_format == GL_RG8) &&
+       feature_info_->feature_flags().ext_texture_rg);
   bool valid_source_format =
       source_internal_format == GL_RED || source_internal_format == GL_ALPHA ||
       source_internal_format == GL_RGB || source_internal_format == GL_RGBA ||
@@ -15025,7 +15034,18 @@ bool GLES2DecoderImpl::ValidateCopyTextureCHROMIUMInternalFormats(
       source_internal_format == GL_BGRA_EXT ||
       source_internal_format == GL_BGRA8_EXT ||
       source_internal_format == GL_RGB_YCBCR_420V_CHROMIUM ||
-      source_internal_format == GL_RGB_YCBCR_422_CHROMIUM;
+      source_internal_format == GL_RGB_YCBCR_422_CHROMIUM ||
+      source_internal_format == GL_RG_EXT ||
+      ((source_internal_format == GL_R32F ||
+        source_internal_format == GL_R16F) &&
+       validators_->texture_internal_format.IsValid(source_internal_format));
+
+  // TODO(astojilj): to check if renderable, check ext_color_buffer_(half)float.
+  // It is, for now, checked in Extensions3DUtil::canUseCopyTextureCHROMIUM.
+  if (dest_internal_format == GL_R32F || dest_internal_format == GL_R16F)
+    valid_dest_format =
+        validators_->texture_internal_format.IsValid(dest_internal_format);
+
   if (!valid_source_format) {
     std::string msg = "invalid source internal format " +
         GLES2Util::GetStringEnum(source_internal_format);
@@ -15104,8 +15124,10 @@ void GLES2DecoderImpl::DoCopyTextureCHROMIUM(
   TextureRef* source_texture_ref = GetTexture(source_id);
   TextureRef* dest_texture_ref = GetTexture(dest_id);
 
+  GLenum format =
+      TextureManager::ExtractFormatFromStorageFormat(internal_format);
   if (!texture_manager()->ValidateTextureParameters(
-          GetErrorState(), kFunctionName, true, internal_format, dest_type,
+          GetErrorState(), kFunctionName, true, format, dest_type,
           internal_format, 0))
     return;