[WebGL-chromium] Return meaningful information in WebGL context creation error message

content/renderer/renderer_blink_platform_impl.cc

Index: content/renderer/renderer_blink_platform_impl.cc
diff --git a/content/renderer/renderer_blink_platform_impl.cc b/content/renderer/renderer_blink_platform_impl.cc
index 3a0ccc35bad04b22350b102a4a29e1ed4577bd09..a26bd7204a5cea36fd2f86a79c2e6d1cb4254124 100644
--- a/content/renderer/renderer_blink_platform_impl.cc
+++ b/content/renderer/renderer_blink_platform_impl.cc
@@ -929,13 +929,15 @@ bool RendererBlinkPlatformImpl::processMemorySizesInBytes(
 blink::WebGraphicsContext3D*
 RendererBlinkPlatformImpl::createOffscreenGraphicsContext3D(
     const blink::WebGraphicsContext3D::Attributes& attributes) {
-  return createOffscreenGraphicsContext3D(attributes, NULL);
+  blink::WebGLInfo glInfo;

[piman, 2014/10/10 20:25:00]

nit: gl_info

[sivag, 2014/10/27 13:34:52]

Done.

+  return createOffscreenGraphicsContext3D(attributes, NULL, glInfo);
 }
 
 blink::WebGraphicsContext3D*
 RendererBlinkPlatformImpl::createOffscreenGraphicsContext3D(
     const blink::WebGraphicsContext3D::Attributes& attributes,
-    blink::WebGraphicsContext3D* share_context) {
+    blink::WebGraphicsContext3D* share_context,
+    blink::WebGLInfo& glInfo) {

[piman, 2014/10/10 20:25:00]

nit: gl_info

[sivag, 2014/10/27 13:34:52]

Done.

   if (!RenderThreadImpl::current())
     return NULL;
 
@@ -956,6 +958,14 @@ RendererBlinkPlatformImpl::createOffscreenGraphicsContext3D(
       RenderThreadImpl::current()->EstablishGpuChannelSync(
           CAUSE_FOR_GPU_LAUNCH_WEBGRAPHICSCONTEXT3DCOMMANDBUFFERIMPL_INITIALIZE));
 
+  const gpu::GPUInfo& gpu_info = gpu_channel_host->gpu_info();
+  glInfo.vendorInfo.assign(
+      blink::WebString::fromUTF8(gpu_info.gl_vendor));
+  glInfo.rendererInfo.assign(
+      blink::WebString::fromUTF8(gpu_info.gl_renderer));
+  glInfo.driverVersion.assign(
+      blink::WebString::fromUTF8(gpu_info.gl_version));
+
   WebGraphicsContext3DCommandBufferImpl::SharedMemoryLimits limits;
   bool lose_context_when_out_of_memory = false;
   scoped_ptr<WebGraphicsContext3DCommandBufferImpl> context(