| // Copyright (c) 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 "ui/gl/gl_fence.h" |
| |
| #include "base/compiler_specific.h" |
| #include "build/build_config.h" |
| #include "ui/gl/gl_bindings.h" |
| #include "ui/gl/gl_context.h" |
| #include "ui/gl/gl_fence_arb.h" |
| #include "ui/gl/gl_fence_egl.h" |
| #include "ui/gl/gl_fence_nv.h" |
| #include "ui/gl/gl_implementation.h" |
| #include "ui/gl/gl_version_info.h" |
| |
| #if defined(OS_MACOSX) |
| #include "ui/gl/gl_fence_apple.h" |
| #endif |
| |
| namespace gl { |
| |
| GLFence::GLFence() { |
| } |
| |
| GLFence::~GLFence() { |
| } |
| |
| bool GLFence::IsSupported() { |
| DCHECK(g_current_gl_version && g_current_gl_driver); |
| return g_current_gl_driver->ext.b_GL_ARB_sync || |
| g_current_gl_version->is_es3 || |
| g_current_gl_version->is_desktop_core_profile || |
| #if defined(OS_MACOSX) |
| g_current_gl_driver->ext.b_GL_APPLE_fence || |
| #else |
| g_driver_egl.ext.b_EGL_KHR_fence_sync || |
| #endif |
| g_current_gl_driver->ext.b_GL_NV_fence; |
| } |
| |
| GLFence* GLFence::Create() { |
| DCHECK(GLContext::GetCurrent()) |
| << "Trying to create fence with no context"; |
| |
| std::unique_ptr<GLFence> fence; |
| #if !defined(OS_MACOSX) |
| if (g_driver_egl.ext.b_EGL_KHR_fence_sync && |
| g_driver_egl.ext.b_EGL_KHR_wait_sync) { |
| // Prefer GLFenceEGL which doesn't require GL context switching. |
| fence.reset(new GLFenceEGL); |
| } else |
| #endif |
| if (g_current_gl_driver->ext.b_GL_ARB_sync || |
| g_current_gl_version->is_es3 || |
| g_current_gl_version->is_desktop_core_profile) { |
| // Prefer ARB_sync which supports server-side wait. |
| fence.reset(new GLFenceARB); |
| #if defined(OS_MACOSX) |
| } else if (g_current_gl_driver->ext.b_GL_APPLE_fence) { |
| fence.reset(new GLFenceAPPLE); |
| #else |
| } else if (g_driver_egl.ext.b_EGL_KHR_fence_sync) { |
| fence.reset(new GLFenceEGL); |
| #endif |
| } else if (g_current_gl_driver->ext.b_GL_NV_fence) { |
| fence.reset(new GLFenceNV); |
| } |
| |
| DCHECK_EQ(!!fence.get(), GLFence::IsSupported()); |
| return fence.release(); |
| } |
| |
| bool GLFence::ResetSupported() { |
| // Resetting a fence to its original state isn't supported by default. |
| return false; |
| } |
| |
| void GLFence::ResetState() { |
| NOTIMPLEMENTED(); |
| } |
| |
| void GLFence::Invalidate() { |
| NOTIMPLEMENTED(); |
| } |
| |
| } // namespace gl |