cc: Use a normal texture for background texture.

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 <algorithm>
 #include <limits>
 
 #include "base/containers/hash_tables.h"
@@ skipping 239 matching lines @@
       read_lock_fence(NULL),
       size(),
       origin(Internal),
       target(0),
       original_filter(0),
       filter(0),
       image_id(0),
       bound_image_id(0),
       texture_pool(0),
       wrap_mode(0),
-      hint(TextureUsageAny),
+      hint(TextureHintImmutable),
       type(InvalidType),
       format(RGBA_8888),
       shared_bitmap(NULL) {
 }
 
 ResourceProvider::Resource::~Resource() {}
 
 ResourceProvider::Resource::Resource(GLuint texture_id,
                                      const gfx::Size& size,
                                      Origin origin,
                                      GLenum target,
                                      GLenum filter,
                                      GLenum texture_pool,
                                      GLint wrap_mode,
-                                     TextureUsageHint hint,
+                                     TextureHint hint,
                                      ResourceFormat format)
     : child_id(0),
       gl_id(texture_id),
       gl_pixel_buffer_id(0),
       gl_upload_query_id(0),
       gl_read_lock_query_id(0),
       pixels(NULL),
       lock_for_read_count(0),
       imported_count(0),
       exported_count(0),
@@ skipping 53 matching lines @@
       read_lock_fence(NULL),
       size(size),
       origin(origin),
       target(0),
       original_filter(filter),
       filter(filter),
       image_id(0),
       bound_image_id(0),
       texture_pool(0),
       wrap_mode(wrap_mode),
-      hint(TextureUsageAny),
+      hint(TextureHintImmutable),
       type(Bitmap),
       format(RGBA_8888),
       shared_bitmap(bitmap) {
   DCHECK(wrap_mode == GL_CLAMP_TO_EDGE || wrap_mode == GL_REPEAT);
   DCHECK(origin == Delegated || pixels);
   if (bitmap)
     shared_bitmap_id = bitmap->id();
 }
 
 ResourceProvider::Resource::Resource(const SharedBitmapId& bitmap_id,
@@ skipping 23 matching lines @@
       read_lock_fence(NULL),
       size(size),
       origin(origin),
       target(0),
       original_filter(filter),
       filter(filter),
       image_id(0),
       bound_image_id(0),
       texture_pool(0),
       wrap_mode(wrap_mode),
-      hint(TextureUsageAny),
+      hint(TextureHintImmutable),
       type(Bitmap),
       format(RGBA_8888),
       shared_bitmap_id(bitmap_id),
       shared_bitmap(NULL) {
   DCHECK(wrap_mode == GL_CLAMP_TO_EDGE || wrap_mode == GL_REPEAT);
 }
 
 ResourceProvider::RasterBuffer::RasterBuffer(
     const Resource* resource,
     ResourceProvider* resource_provider)
@@ skipping 227 matching lines @@
 }
 
 bool ResourceProvider::AllowOverlay(ResourceId id) {
   Resource* resource = GetResource(id);
   return resource->allow_overlay;
 }
 
 ResourceProvider::ResourceId ResourceProvider::CreateResource(
     const gfx::Size& size,
     GLint wrap_mode,
-    TextureUsageHint hint,
+    TextureHint hint,
     ResourceFormat format) {
   DCHECK(!size.IsEmpty());
   switch (default_resource_type_) {
     case GLTexture:
       return CreateGLTexture(size,
                              GL_TEXTURE_2D,
                              GL_TEXTURE_POOL_UNMANAGED_CHROMIUM,
                              wrap_mode,
                              hint,
                              format);
     case Bitmap:
       DCHECK_EQ(RGBA_8888, format);
       return CreateBitmap(size, wrap_mode);
     case InvalidType:
       break;
   }
 
   LOG(FATAL) << "Invalid default resource type.";
   return 0;
 }
 
 ResourceProvider::ResourceId ResourceProvider::CreateManagedResource(
     const gfx::Size& size,
     GLenum target,
     GLint wrap_mode,
-    TextureUsageHint hint,
+    TextureHint hint,
     ResourceFormat format) {
   DCHECK(!size.IsEmpty());
   switch (default_resource_type_) {
     case GLTexture:
       return CreateGLTexture(size,
                              target,
                              GL_TEXTURE_POOL_MANAGED_CHROMIUM,
                              wrap_mode,
                              hint,
                              format);
     case Bitmap:
       DCHECK_EQ(RGBA_8888, format);
       return CreateBitmap(size, wrap_mode);
     case InvalidType:
       break;
   }
 
   LOG(FATAL) << "Invalid default resource type.";
   return 0;
 }
 
 ResourceProvider::ResourceId ResourceProvider::CreateGLTexture(
     const gfx::Size& size,
     GLenum target,
     GLenum texture_pool,
     GLint wrap_mode,
-    TextureUsageHint hint,
+    TextureHint hint,
     ResourceFormat format) {
   DCHECK_LE(size.width(), max_texture_size_);
   DCHECK_LE(size.height(), max_texture_size_);
   DCHECK(thread_checker_.CalledOnValidThread());
 
   ResourceId id = next_id_++;
   Resource resource(0,
                     size,
                     Resource::Internal,
                     target,
@@ skipping 38 matching lines @@
   DCHECK(thread_checker_.CalledOnValidThread());
 
   ResourceId id = next_id_++;
   Resource resource(0,
                     gfx::Size(),
                     Resource::Internal,
                     GL_TEXTURE_RECTANGLE_ARB,
                     GL_LINEAR,
                     GL_TEXTURE_POOL_UNMANAGED_CHROMIUM,
                     GL_CLAMP_TO_EDGE,
-                    TextureUsageAny,
+                    TextureHintImmutable,
                     RGBA_8888);
   LazyCreate(&resource);
   GLES2Interface* gl = ContextGL();
   DCHECK(gl);
   gl->BindTexture(GL_TEXTURE_RECTANGLE_ARB, resource.gl_id);
   gl->TexImageIOSurface2DCHROMIUM(
       GL_TEXTURE_RECTANGLE_ARB, size.width(), size.height(), io_surface_id, 0);
   resource.allocated = true;
   resources_[id] = resource;
   return id;
 }
 
 ResourceProvider::ResourceId ResourceProvider::CreateResourceFromTextureMailbox(
     const TextureMailbox& mailbox,
     scoped_ptr<SingleReleaseCallback> release_callback) {
   DCHECK(thread_checker_.CalledOnValidThread());
   // Just store the information. Mailbox will be consumed in LockForRead().
   ResourceId id = next_id_++;
   DCHECK(mailbox.IsValid());
   Resource& resource = resources_[id];
   if (mailbox.IsTexture()) {
     resource = Resource(0,
                         gfx::Size(),
                         Resource::External,
                         mailbox.target(),
                         GL_LINEAR,
                         0,
                         GL_CLAMP_TO_EDGE,
-                        TextureUsageAny,
+                        TextureHintImmutable,
                         RGBA_8888);
   } else {
     DCHECK(mailbox.IsSharedMemory());
     base::SharedMemory* shared_memory = mailbox.shared_memory();
     DCHECK(shared_memory->memory());
     uint8_t* pixels = reinterpret_cast<uint8_t*>(shared_memory->memory());
     DCHECK(pixels);
     scoped_ptr<SharedBitmap> shared_bitmap;
     if (shared_bitmap_manager_) {
       shared_bitmap =
@@ skipping 627 matching lines @@
                           GL_LINEAR,
                           it->is_repeated ? GL_REPEAT : GL_CLAMP_TO_EDGE);
     } else {
       resource = Resource(0,
                           it->size,
                           Resource::Delegated,
                           it->mailbox_holder.texture_target,
                           it->filter,
                           0,
                           it->is_repeated ? GL_REPEAT : GL_CLAMP_TO_EDGE,
-                          TextureUsageAny,
+                          TextureHintImmutable,
                           it->format);
       resource.mailbox = TextureMailbox(it->mailbox_holder.mailbox,
                                         it->mailbox_holder.texture_target,
                                         it->mailbox_holder.sync_point);
     }
     resource.child_id = child;
     // Don't allocate a texture for a child.
     resource.allocated = true;
     resource.imported_count = 1;
     resource.allow_overlay = it->allow_overlay;
@@ skipping 607 matching lines @@
       gl->TexParameteri(resource->target, GL_TEXTURE_MAG_FILTER, GL_LINEAR));
   GLC(gl,
       gl->TexParameteri(
           resource->target, GL_TEXTURE_WRAP_S, resource->wrap_mode));
   GLC(gl,
       gl->TexParameteri(
           resource->target, GL_TEXTURE_WRAP_T, resource->wrap_mode));
   GLC(gl,
       gl->TexParameteri(
           resource->target, GL_TEXTURE_POOL_CHROMIUM, resource->texture_pool));
-  if (use_texture_usage_hint_ && resource->hint == TextureUsageFramebuffer) {
+  if (use_texture_usage_hint_ && resource->hint == TextureHintFramebuffer) {
     GLC(gl,
         gl->TexParameteri(resource->target,
                           GL_TEXTURE_USAGE_ANGLE,
                           GL_FRAMEBUFFER_ATTACHMENT_ANGLE));
   }
 }
 
 void ResourceProvider::AllocateForTesting(ResourceId id) {
   LazyAllocate(GetResource(id));
 }
 
 void ResourceProvider::LazyAllocate(Resource* resource) {
   DCHECK(resource);
   LazyCreate(resource);
 
   DCHECK(resource->gl_id || resource->allocated);
   if (resource->allocated || !resource->gl_id)
     return;
   resource->allocated = true;
   GLES2Interface* gl = ContextGL();
   gfx::Size& size = resource->size;
   DCHECK_EQ(resource->target, static_cast<GLenum>(GL_TEXTURE_2D));
   ResourceFormat format = resource->format;
   GLC(gl, gl->BindTexture(GL_TEXTURE_2D, resource->gl_id));
   if (use_texture_storage_ext_ && IsFormatSupportedForStorage(format) &&
-      resource->hint != TextureUsageFramebuffer) {
+      resource->hint == TextureHintImmutable) {
     GLenum storage_format = TextureToStorageFormat(format);
     GLC(gl,
         gl->TexStorage2DEXT(
             GL_TEXTURE_2D, 1, storage_format, size.width(), size.height()));
   } else {
     // ETC1 does not support preallocation.
     if (format != ETC1) {
       GLC(gl,
           gl->TexImage2D(GL_TEXTURE_2D,
                          0,
@@ skipping 176 matching lines @@
   ContextProvider* context_provider = output_surface_->context_provider();
   return context_provider ? context_provider->ContextGL() : NULL;
 }
 
 class GrContext* ResourceProvider::GrContext() const {
   ContextProvider* context_provider = output_surface_->context_provider();
   return context_provider ? context_provider->GrContext() : NULL;
 }
 
 }  // namespace cc