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79c704dc99
When tearing down the Sky compostior, we need to destroy the GL context and all the textures in the resource manager. R=ojan@chromium.org Review URL: https://codereview.chromium.org/761503004
92 lines
3.1 KiB
C++
92 lines
3.1 KiB
C++
// Copyright 2014 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "sky/compositor/resource_manager.h"
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#ifndef GL_GLEXT_PROTOTYPES
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#define GL_GLEXT_PROTOTYPES
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#endif
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#include "base/logging.h"
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#include "base/stl_util.h"
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#include "gpu/GLES2/gl2chromium.h"
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#include "gpu/GLES2/gl2extchromium.h"
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#include "mojo/converters/geometry/geometry_type_converters.h"
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#include "mojo/gpu/gl_context.h"
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#include "mojo/gpu/gl_texture.h"
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#include "mojo/public/c/gles2/gles2.h"
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#include "sky/compositor/layer.h"
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namespace sky {
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ResourceManager::ResourceManager(base::WeakPtr<mojo::GLContext> gl_context)
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: gl_context_(gl_context), next_resource_id_(0) {
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}
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ResourceManager::~ResourceManager() {
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STLDeleteContainerPairSecondPointers(resource_to_texture_map_.begin(),
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resource_to_texture_map_.end());
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}
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scoped_ptr<mojo::GLTexture> ResourceManager::CreateTexture(
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const gfx::Size& size) {
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gl_context_->MakeCurrent();
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return make_scoped_ptr(new mojo::GLTexture(
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gl_context_, mojo::TypeConverter<mojo::Size, gfx::Size>::Convert(size)));
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}
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mojo::TransferableResourcePtr ResourceManager::CreateTransferableResource(
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Layer* layer) {
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scoped_ptr<mojo::GLTexture> texture = layer->GetTexture();
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mojo::Size size = texture->size();
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gl_context_->MakeCurrent();
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glBindTexture(GL_TEXTURE_2D, texture->texture_id());
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GLbyte mailbox[GL_MAILBOX_SIZE_CHROMIUM];
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glGenMailboxCHROMIUM(mailbox);
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glProduceTextureCHROMIUM(GL_TEXTURE_2D, mailbox);
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GLuint sync_point = glInsertSyncPointCHROMIUM();
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mojo::TransferableResourcePtr resource = mojo::TransferableResource::New();
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resource->id = next_resource_id_++;
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resource_to_texture_map_[resource->id] = texture.release();
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resource->format = mojo::RESOURCE_FORMAT_RGBA_8888;
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resource->filter = GL_LINEAR;
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resource->size = size.Clone();
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resource->is_repeated = false;
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resource->is_software = false;
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mojo::MailboxHolderPtr mailbox_holder = mojo::MailboxHolder::New();
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mailbox_holder->mailbox = mojo::Mailbox::New();
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for (int i = 0; i < GL_MAILBOX_SIZE_CHROMIUM; ++i)
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mailbox_holder->mailbox->name.push_back(mailbox[i]);
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mailbox_holder->texture_target = GL_TEXTURE_2D;
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mailbox_holder->sync_point = sync_point;
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resource->mailbox_holder = mailbox_holder.Pass();
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return resource.Pass();
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}
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void ResourceManager::ReturnResources(
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mojo::Array<mojo::ReturnedResourcePtr> resources) {
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DCHECK(resources.size());
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gl_context_->MakeCurrent();
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for (size_t i = 0u; i < resources.size(); ++i) {
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mojo::ReturnedResourcePtr resource = resources[i].Pass();
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DCHECK_EQ(1, resource->count);
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auto iter = resource_to_texture_map_.find(resource->id);
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if (iter == resource_to_texture_map_.end())
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continue;
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mojo::GLTexture* texture = iter->second;
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DCHECK_NE(0u, texture->texture_id());
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resource_to_texture_map_.erase(iter);
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// TODO(abarth): Consider recycling the texture.
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glWaitSyncPointCHROMIUM(resource->sync_point);
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delete texture;
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}
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}
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} // namespace examples
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