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

gpu/command_buffer/service/gles2_cmd_decoder.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/gles2_cmd_decoder.h"
 
 #include <stdio.h>
 
 #include <algorithm>
 #include <list>
@@ skipping 2941 matching lines @@
       backbuffer_needs_clear_bits_ = 0;
       RestoreClearState();
     }
     return true;
   }
 
   if (framebuffer_manager()->IsComplete(framebuffer)) {
     return true;
   }
 
-  GLenum completeness = framebuffer->IsPossiblyComplete();
+  GLenum completeness = framebuffer->IsPossiblyComplete(
+      features().chromium_color_buffer_float_rgba,
+      features().chromium_color_buffer_float_rgb);
   if (completeness != GL_FRAMEBUFFER_COMPLETE) {
     LOCAL_SET_GL_ERROR(
         GL_INVALID_FRAMEBUFFER_OPERATION, func_name, "framebuffer incomplete");
     return false;
   }
 
   // Are all the attachments cleared?
   if (renderbuffer_manager()->HaveUnclearedRenderbuffers() ||
       texture_manager()->HaveUnclearedMips()) {
     if (!framebuffer->IsCleared()) {
@@ skipping 1915 matching lines @@
     glEnable(GL_SCISSOR_TEST);
   }
 }
 
 GLenum GLES2DecoderImpl::DoCheckFramebufferStatus(GLenum target) {
   Framebuffer* framebuffer =
       GetFramebufferInfoForTarget(target);
   if (!framebuffer) {
     return GL_FRAMEBUFFER_COMPLETE;
   }
-  GLenum completeness = framebuffer->IsPossiblyComplete();
+  GLenum completeness = framebuffer->IsPossiblyComplete(
+      features().chromium_color_buffer_float_rgba,
+      features().chromium_color_buffer_float_rgb);
   if (completeness != GL_FRAMEBUFFER_COMPLETE) {
     return completeness;
   }
   return framebuffer->GetStatus(texture_manager(), target);
 }
 
 void GLES2DecoderImpl::DoFramebufferTexture2D(
     GLenum target, GLenum attachment, GLenum textarget,
     GLuint client_texture_id, GLint level) {
   DoFramebufferTexture2DCommon(
@@ skipping 5607 matching lines @@
   DoDidUseTexImageIfNeeded(texture, texture->target());
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/service/gles2_cmd_decoder_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu