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

cc/resources/resource_provider.cc

 // Copyright 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 "cc/resources/resource_provider.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 73 matching lines @@
     case BGRA_8888:
       storage_format = GL_BGRA8_EXT;
       break;
     case RGBA_4444:
     case ALPHA_8:
     case LUMINANCE_8:
     case RGB_565:
     case ETC1:
     case RED_8:
     case LUMINANCE_F16:
+    case RG_88:
       NOTREACHED();
       break;
   }
 
   return storage_format;
 }
 
 bool IsFormatSupportedForStorage(ResourceFormat format, bool use_bgra) {
   switch (format) {
     case RGBA_8888:
       return true;
     case BGRA_8888:
       return use_bgra;
     case RGBA_4444:
     case ALPHA_8:
     case LUMINANCE_8:
     case RGB_565:
     case ETC1:
     case RED_8:
     case LUMINANCE_F16:
+    case RG_88:
       return false;
   }
   return false;
 }
 
 GrPixelConfig ToGrPixelConfig(ResourceFormat format) {
   switch (format) {
     case RGBA_8888:
       return kRGBA_8888_GrPixelConfig;
     case BGRA_8888:
@@ skipping 315 matching lines @@
   DCHECK(!buffer_id_allocator_);
 
   const auto& caps = compositor_context_provider_->ContextCapabilities();
 
   DCHECK(IsGpuResourceType(default_resource_type_));
   use_texture_storage_ext_ = caps.texture_storage;
   use_texture_format_bgra_ = caps.texture_format_bgra8888;
   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
+          : static_cast<ResourceFormat>(-1);  // Return -1 when not supported.
   yuv_highbit_resource_format_ = yuv_resource_format_;
   if (caps.texture_half_float_linear)
     yuv_highbit_resource_format_ = LUMINANCE_F16;
   use_sync_query_ = caps.sync_query;
 
   GLES2Interface* gl = ContextGL();
 
   max_texture_size_ = 0;  // Context expects cleared value.
   gl->GetIntegerv(GL_MAX_TEXTURE_SIZE, &max_texture_size_);
   best_texture_format_ =
@@ skipping 48 matching lines @@
     case RGBA_4444:
     case RGBA_8888:
     case RGB_565:
     case LUMINANCE_8:
       return true;
     case BGRA_8888:
       return caps.texture_format_bgra8888;
     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;
   }
 
   NOTREACHED();
   return false;
 }
 
 bool ResourceProvider::InUseByConsumer(ResourceId id) {
@@ skipping 43 matching lines @@
 
     case RESOURCE_TYPE_BITMAP:
       DCHECK_EQ(RGBA_8888, format);
       return CreateBitmap(size, color_space);
   }
 
   LOG(FATAL) << "Invalid default resource type.";
   return 0;
 }
 
+ResourceFormat ResourceProvider::Y16ResourceFormat() const {
+  return y16_resource_format_;
+}
+
 ResourceId ResourceProvider::CreateGpuMemoryBufferResource(
     const gfx::Size& size,
     TextureHint hint,
     ResourceFormat format,
     gfx::BufferUsage usage,
     const gfx::ColorSpace& color_space) {
   DCHECK(!size.IsEmpty());
   switch (default_resource_type_) {
     case RESOURCE_TYPE_GPU_MEMORY_BUFFER:
     case RESOURCE_TYPE_GL_TEXTURE: {
@@ skipping 443 matching lines @@
   resource->read_lock_fences_enabled = true;
 }
 
 ResourceProvider::ScopedReadLockGL::ScopedReadLockGL(
     ResourceProvider* resource_provider,
     ResourceId resource_id)
     : resource_provider_(resource_provider), resource_id_(resource_id) {
   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;
 }
 
 ResourceProvider::ScopedReadLockGL::~ScopedReadLockGL() {
   resource_provider_->UnlockForRead(resource_id_);
 }
 
 ResourceProvider::ScopedSamplerGL::ScopedSamplerGL(
     ResourceProvider* resource_provider,
@@ skipping 962 matching lines @@
 
     const int kImportance = 2;
     pmd->CreateSharedGlobalAllocatorDump(guid);
     pmd->AddOwnershipEdge(dump->guid(), guid, kImportance);
   }
 
   return true;
 }
 
 }  // namespace cc