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// Copyright 2014 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 "build/build_config.h"
#if defined(USE_X11)
#include "ui/gfx/x/x11.h"
#endif // USE_X11
#if defined(USE_EGL)
#include <EGL/egl.h>
#endif
#include "ui/gl/gl_bindings.h"
#if defined(USE_GLX)
#include "ui/gfx/x/x11_types.h"
#endif
#if defined(OS_WIN)
#include "ui/gl/gl_surface_wgl.h"
#endif
#if defined(USE_EGL)
#include "ui/gl/gl_surface_egl.h"
#endif
namespace gl {
std::string DriverOSMESA::GetPlatformExtensions() {
return "";
}
#if defined(OS_WIN)
std::string DriverWGL::GetPlatformExtensions() {
const char* str = nullptr;
str = wglGetExtensionsStringARB(GLSurfaceWGL::GetDisplayDC());
if (str)
return str;
return wglGetExtensionsStringEXT();
}
#endif
#if defined(USE_EGL)
#if !defined(TOOLKIT_QT)
std::string DriverEGL::GetPlatformExtensions() {
EGLDisplay display = GLSurfaceEGL::GetHardwareDisplay();
if (display == EGL_NO_DISPLAY)
return "";
const char* str = eglQueryString(display, EGL_EXTENSIONS);
return str ? std::string(str) : "";
}
#endif
void DriverEGL::UpdateConditionalExtensionBindings() {
// For the moment, only two extensions can be conditionally disabled
// through GPU driver bug workarounds mechanism:
// EGL_KHR_fence_sync
// EGL_KHR_wait_sync
// In theory it's OK to allow disabling other EGL extensions, as far as they
// are not the ones used in GLSurfaceEGL::InitializeOneOff().
std::string extensions(GetPlatformExtensions());
extensions += " ";
ext.b_EGL_KHR_fence_sync =
extensions.find("EGL_KHR_fence_sync ") != std::string::npos;
ext.b_EGL_KHR_wait_sync =
extensions.find("EGL_KHR_wait_sync ") != std::string::npos;
if (!ext.b_EGL_KHR_wait_sync) {
fn.eglWaitSyncKHRFn = nullptr;
}
}
// static
std::string DriverEGL::GetClientExtensions() {
const char* str = eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS);
return str ? std::string(str) : "";
}
#endif
#if defined(USE_GLX)
std::string DriverGLX::GetPlatformExtensions() {
const char* str = glXQueryExtensionsString(gfx::GetXDisplay(), 0);
return str ? std::string(str) : "";
}
#endif
} // namespace gl
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