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// Copyright 2013 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/async_pixel_transfer_manager.h"
#include "base/command_line.h"
#include "base/sys_info.h"
#include "base/trace_event/trace_event.h"
#include "gpu/command_buffer/service/async_pixel_transfer_manager_egl.h"
#include "gpu/command_buffer/service/async_pixel_transfer_manager_idle.h"
#include "gpu/command_buffer/service/async_pixel_transfer_manager_stub.h"
#include "gpu/command_buffer/service/async_pixel_transfer_manager_sync.h"
#include "gpu/command_buffer/service/gpu_switches.h"
#include "ui/gl/gl_context.h"
#include "ui/gl/gl_implementation.h"
namespace gpu {
namespace {
enum GpuType {
GPU_BROADCOM,
GPU_IMAGINATION,
GPU_NVIDIA_ES31,
GPU_ADRENO_420,
GPU_OTHER,
};
std::string MakeString(const char* s) {
return std::string(s ? s : "");
}
GpuType GetGpuType() {
const std::string vendor = MakeString(
reinterpret_cast<const char*>(glGetString(GL_VENDOR)));
const std::string renderer = MakeString(
reinterpret_cast<const char*>(glGetString(GL_RENDERER)));
const std::string version = MakeString(
reinterpret_cast<const char*>(glGetString(GL_VERSION)));
if (vendor.find("Broadcom") != std::string::npos)
return GPU_BROADCOM;
if (vendor.find("Imagination") != std::string::npos)
return GPU_IMAGINATION;
if (vendor.find("NVIDIA") != std::string::npos &&
version.find("OpenGL ES 3.1") != std::string::npos) {
return GPU_NVIDIA_ES31;
}
if (vendor.find("Qualcomm") != std::string::npos &&
renderer.find("Adreno (TM) 420") != std::string::npos) {
return GPU_ADRENO_420;
}
return GPU_OTHER;
}
bool AllowTransferThreadForGpu() {
GpuType gpu = GetGpuType();
return gpu != GPU_BROADCOM && gpu != GPU_IMAGINATION &&
gpu != GPU_NVIDIA_ES31 && gpu != GPU_ADRENO_420;
}
}
// We only used threaded uploads when we can:
// - Create EGLImages out of OpenGL textures (EGL_KHR_gl_texture_2D_image)
// - Bind EGLImages to OpenGL textures (GL_OES_EGL_image)
// - Use fences (to test for upload completion).
// - The heap size is large enough.
// TODO(kaanb|epenner): Remove the IsImagination() check pending the
// resolution of crbug.com/249147
// TODO(kaanb|epenner): Remove the IsLowEndDevice() check pending the
// resolution of crbug.com/271929
AsyncPixelTransferManager* AsyncPixelTransferManager::Create(
gfx::GLContext* context) {
DCHECK(context->IsCurrent(NULL));
base::CommandLine* cl = base::CommandLine::ForCurrentProcess();
// Threaded mailbox uses EGLImage which conflicts with EGL uploader.
// The spec only allows one EGL image per sibling group, but currently the
// image handle cannot be shared between the threaded mailbox code and
// AsyncPixelTransferManagerEGL.
bool uses_threaded_mailboxes =
cl->HasSwitch(switches::kEnableThreadedTextureMailboxes);
// TexImage2D orphans the EGLImage used for threaded mailbox sharing.
bool use_teximage2d_over_texsubimage2d = !uses_threaded_mailboxes;
switch (gfx::GetGLImplementation()) {
case gfx::kGLImplementationEGLGLES2:
DCHECK(context);
if (!base::SysInfo::IsLowEndDevice() &&
context->HasExtension("EGL_KHR_fence_sync") &&
context->HasExtension("EGL_KHR_image") &&
context->HasExtension("EGL_KHR_image_base") &&
context->HasExtension("EGL_KHR_gl_texture_2D_image") &&
context->HasExtension("GL_OES_EGL_image") &&
!uses_threaded_mailboxes && AllowTransferThreadForGpu()) {
TRACE_EVENT0("gpu", "AsyncPixelTransferManager_CreateWithThread");
return new AsyncPixelTransferManagerEGL;
}
return new AsyncPixelTransferManagerIdle(
use_teximage2d_over_texsubimage2d);
case gfx::kGLImplementationOSMesaGL: {
TRACE_EVENT0("gpu", "AsyncPixelTransferManager_CreateIdle");
return new AsyncPixelTransferManagerIdle(
use_teximage2d_over_texsubimage2d);
}
case gfx::kGLImplementationMockGL:
return new AsyncPixelTransferManagerStub;
default:
NOTREACHED();
return NULL;
}
}
} // namespace gpu
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