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// Copyright 2014 The Chromium Authors
// 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_EGL)
#include <EGL/egl.h>
#endif
#include "ui/gl/gl_bindings.h"
#if defined(USE_GLX)
#include "ui/gfx/x/connection.h"
#include "ui/gfx/x/glx.h"
#endif
#if defined(USE_EGL)
#include "ui/gl/gl_display.h"
#include "ui/gl/gl_surface_egl.h"
#endif
namespace gl {
#if defined(USE_EGL)
void DisplayExtensionsEGL::UpdateConditionalExtensionSettings(
EGLDisplay display) {
// 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(display));
extensions += " ";
b_EGL_KHR_fence_sync =
extensions.find("EGL_KHR_fence_sync ") != std::string::npos;
b_EGL_KHR_wait_sync =
extensions.find("EGL_KHR_wait_sync ") != std::string::npos;
}
// static
std::string DisplayExtensionsEGL::GetPlatformExtensions(EGLDisplay display) {
if (display == EGL_NO_DISPLAY)
return "";
const char* str = eglQueryString(display, EGL_EXTENSIONS);
return str ? std::string(str) : "";
}
// static
std::string ClientExtensionsEGL::GetClientExtensions() {
const char* str = eglQueryString(EGL_NO_DISPLAY, EGL_EXTENSIONS);
return str ? std::string(str) : "";
}
#endif
#if defined(USE_GLX)
std::string DriverGLX::GetPlatformExtensions() {
auto* connection = x11::Connection::Get();
const int screen = connection ? connection->DefaultScreenId() : 0;
const char* str =
glXQueryExtensionsString(connection->GetXlibDisplay(), screen);
return str ? std::string(str) : "";
}
#endif
} // namespace gl
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