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

cc/resources/resource_provider.cc

Index: cc/resources/resource_provider.cc
diff --git a/cc/resources/resource_provider.cc b/cc/resources/resource_provider.cc
index c2e850bc2493872d771842c1db5f628a9ae78d88..8beccf7f250fc9fc419fcd724549afe0feedc36e 100644
--- a/cc/resources/resource_provider.cc
+++ b/cc/resources/resource_provider.cc
@@ -91,6 +91,7 @@ GLenum TextureToStorageFormat(ResourceFormat format) {
     case ETC1:
     case RED_8:
     case LUMINANCE_F16:
+    case RG_88:
       NOTREACHED();
       break;
   }
@@ -111,6 +112,7 @@ bool IsFormatSupportedForStorage(ResourceFormat format, bool use_bgra) {
     case ETC1:
     case RED_8:
     case LUMINANCE_F16:
+    case RG_88:
       return false;
   }
   return false;
@@ -446,6 +448,10 @@ ResourceProvider::ResourceProvider(
   use_texture_usage_hint_ = caps.texture_usage;
   use_compressed_texture_etc1_ = caps.texture_format_etc1;
   yuv_resource_format_ = caps.texture_rg ? RED_8 : LUMINANCE_8;
+  y16_resource_format_ =
+      caps.texture_rg
+          ? RG_88
+          : RGBA_8888;
   yuv_highbit_resource_format_ = yuv_resource_format_;
   if (caps.texture_half_float_linear)
     yuv_highbit_resource_format_ = LUMINANCE_F16;
@@ -514,6 +520,7 @@ bool ResourceProvider::IsResourceFormatSupported(ResourceFormat format) const {
     case ETC1:
       return caps.texture_format_etc1;
     case RED_8:
+    case RG_88:
       return caps.texture_rg;
     case LUMINANCE_F16:
       return caps.texture_half_float_linear;
@@ -577,6 +584,10 @@ ResourceId ResourceProvider::CreateResource(
   return 0;
 }
 
+ResourceFormat ResourceProvider::Y16ResourceFormat() const {
+  return y16_resource_format_;
+}
+
 ResourceId ResourceProvider::CreateGpuMemoryBufferResource(
     const gfx::Size& size,
     TextureHint hint,
@@ -1040,6 +1051,7 @@ ResourceProvider::ScopedReadLockGL::ScopedReadLockGL(
   const Resource* resource = resource_provider->LockForRead(resource_id);
   texture_id_ = resource->gl_id;
   target_ = resource->target;
+  format_ = resource->format;
   size_ = resource->size;
   color_space_ = resource->color_space;
 }