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// Copyright (c) 2011 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 "gpu/command_buffer/service/context_group.h"
#include "gpu/command_buffer/common/id_allocator.h"
#include "gpu/command_buffer/service/buffer_manager.h"
#include "gpu/command_buffer/service/framebuffer_manager.h"
#include "gpu/command_buffer/service/gles2_cmd_decoder.h"
#include "gpu/command_buffer/service/program_manager.h"
#include "gpu/command_buffer/service/renderbuffer_manager.h"
#include "gpu/command_buffer/service/shader_manager.h"
#include "gpu/command_buffer/service/texture_manager.h"
#include "ui/gfx/gl/gl_implementation.h"
namespace gpu {
namespace gles2 {
ContextGroup::ContextGroup(bool bind_generates_resource)
: initialized_(false),
have_context_(true),
bind_generates_resource_(bind_generates_resource),
max_vertex_attribs_(0u),
max_texture_units_(0u),
max_texture_image_units_(0u),
max_vertex_texture_image_units_(0u),
max_fragment_uniform_vectors_(0u),
max_varying_vectors_(0u),
max_vertex_uniform_vectors_(0u) {
id_namespaces_[id_namespaces::kBuffers].reset(new IdAllocator);
id_namespaces_[id_namespaces::kFramebuffers].reset(new IdAllocator);
id_namespaces_[id_namespaces::kProgramsAndShaders].reset(
new NonReusedIdAllocator);
id_namespaces_[id_namespaces::kRenderbuffers].reset(new IdAllocator);
id_namespaces_[id_namespaces::kTextures].reset(new IdAllocator);
}
ContextGroup::~ContextGroup() {
Destroy();
}
static void GetIntegerv(GLenum pname, uint32* var) {
GLint value = 0;
glGetIntegerv(pname, &value);
*var = value;
}
bool ContextGroup::Initialize(const DisallowedFeatures& disallowed_features,
const char* allowed_features) {
if (initialized_) {
return true;
}
if (!feature_info_.Initialize(disallowed_features, allowed_features)) {
LOG(ERROR) << "ContextGroup::Initialize failed because FeatureInfo "
<< "initialization failed.";
return false;
}
GLint max_renderbuffer_size = 0;
glGetIntegerv(GL_MAX_RENDERBUFFER_SIZE, &max_renderbuffer_size);
buffer_manager_.reset(new BufferManager());
framebuffer_manager_.reset(new FramebufferManager());
renderbuffer_manager_.reset(new RenderbufferManager(max_renderbuffer_size));
shader_manager_.reset(new ShaderManager());
program_manager_.reset(new ProgramManager());
// Lookup GL things we need to know.
GetIntegerv(GL_MAX_VERTEX_ATTRIBS, &max_vertex_attribs_);
const GLuint kGLES2RequiredMinimumVertexAttribs = 8u;
if (max_vertex_attribs_ < kGLES2RequiredMinimumVertexAttribs) {
LOG(ERROR) << "ContextGroup::Initialize failed because too few "
<< "vertex attributes supported.";
return false;
}
GetIntegerv(GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS, &max_texture_units_);
const GLuint kGLES2RequiredMinimumTextureUnits = 8u;
if (max_texture_units_ < kGLES2RequiredMinimumTextureUnits) {
LOG(ERROR) << "ContextGroup::Initialize failed because too few "
<< "texture units supported.";
return false;
}
GLint max_texture_size = 0;
GLint max_cube_map_texture_size = 0;
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &max_texture_size);
glGetIntegerv(GL_MAX_CUBE_MAP_TEXTURE_SIZE, &max_cube_map_texture_size);
texture_manager_.reset(new TextureManager(max_texture_size,
max_cube_map_texture_size));
GetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &max_texture_image_units_);
GetIntegerv(
GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS, &max_vertex_texture_image_units_);
if (gfx::GetGLImplementation() == gfx::kGLImplementationEGLGLES2) {
GetIntegerv(GL_MAX_FRAGMENT_UNIFORM_VECTORS,
&max_fragment_uniform_vectors_);
GetIntegerv(GL_MAX_VARYING_VECTORS, &max_varying_vectors_);
GetIntegerv(GL_MAX_VERTEX_UNIFORM_VECTORS, &max_vertex_uniform_vectors_);
} else {
GetIntegerv(
GL_MAX_FRAGMENT_UNIFORM_COMPONENTS, &max_fragment_uniform_vectors_);
max_fragment_uniform_vectors_ /= 4;
GetIntegerv(GL_MAX_VARYING_FLOATS, &max_varying_vectors_);
max_varying_vectors_ /= 4;
GetIntegerv(GL_MAX_VERTEX_UNIFORM_COMPONENTS, &max_vertex_uniform_vectors_);
max_vertex_uniform_vectors_ /= 4;
}
if (!texture_manager_->Initialize(feature_info())) {
LOG(ERROR) << "Context::Group::Initialize failed because texture manager "
<< "failed to initialize.";
return false;
}
initialized_ = true;
return true;
}
void ContextGroup::Destroy() {
if (buffer_manager_ != NULL) {
buffer_manager_->Destroy(have_context_);
buffer_manager_.reset();
}
if (framebuffer_manager_ != NULL) {
framebuffer_manager_->Destroy(have_context_);
framebuffer_manager_.reset();
}
if (renderbuffer_manager_ != NULL) {
renderbuffer_manager_->Destroy(have_context_);
renderbuffer_manager_.reset();
}
if (texture_manager_ != NULL) {
texture_manager_->Destroy(have_context_);
texture_manager_.reset();
}
if (program_manager_ != NULL) {
program_manager_->Destroy(have_context_);
program_manager_.reset();
}
if (shader_manager_ != NULL) {
shader_manager_->Destroy(have_context_);
shader_manager_.reset();
}
}
IdAllocatorInterface* ContextGroup::GetIdAllocator(unsigned namespace_id) {
if (namespace_id >= arraysize(id_namespaces_))
return NULL;
return id_namespaces_[namespace_id].get();
}
} // namespace gles2
} // namespace gpu
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