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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
// 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 "gl_context_qt.h"
#include "ozone/gl_surface_egl_qt.h"
#include "ui/gl/egl_util.h"
#include "ui/gl/gl_bindings.h"
#include "ui/gl/gl_display.h"
#include "ui/gl/gl_display_manager.h"
#include "ui/gl/init/gl_factory.h"
#if !BUILDFLAG(IS_MAC) && !BUILDFLAG(IS_WIN)
using ui::GetLastEGLErrorString;
namespace gl {
bool GLSurfaceEGLQt::g_egl_surfaceless_context_supported = false;
bool GLSurfaceEGLQt::s_initialized = false;
GLSurfaceEGLQt::GLSurfaceEGLQt(gl::GLDisplayEGL *display, const gfx::Size& size)
: GLSurfaceQt(size),
m_surfaceBuffer(0)
{
}
GLSurfaceEGLQt::~GLSurfaceEGLQt()
{
Destroy();
}
gl::GLDisplay *GLSurfaceEGLQt::InitializeOneOff(gl::GpuPreference preference)
{
if (s_initialized)
return g_display;
auto *egl_display = GLDisplayManagerEGL::GetInstance()->GetDisplay(preference);
g_display = egl_display;
egl_display->SetDisplay(GLContextHelper::getEGLDisplay());
if (!egl_display->GetDisplay()) {
LOG(ERROR) << "GLContextHelper::getEGLDisplay() failed.";
return nullptr;
}
g_config = GLContextHelper::getEGLConfig();
if (!g_config) {
LOG(ERROR) << "GLContextHelper::getEGLConfig() failed.";
return nullptr;
}
if (!eglInitialize(egl_display->GetDisplay(), NULL, NULL)) {
LOG(ERROR) << "eglInitialize failed with error " << GetLastEGLErrorString();
return nullptr;
}
g_extensions = eglQueryString(egl_display->GetDisplay(), EGL_EXTENSIONS);
g_egl_surfaceless_context_supported = ExtensionsContain(g_extensions.c_str(), "EGL_KHR_surfaceless_context");
if (g_egl_surfaceless_context_supported) {
scoped_refptr<GLSurface> surface = new GLSurfacelessQtEGL(egl_display, gfx::Size(1, 1));
gl::GLContextAttribs attribs;
scoped_refptr<GLContext> context = init::CreateGLContext(
NULL, surface.get(), attribs);
if (!context->MakeCurrent(surface.get()))
g_egl_surfaceless_context_supported = false;
// Ensure context supports GL_OES_surfaceless_context.
if (g_egl_surfaceless_context_supported) {
g_egl_surfaceless_context_supported = context->HasExtension(
"GL_OES_surfaceless_context");
context->ReleaseCurrent(surface.get());
}
}
s_initialized = true;
return egl_display;
}
bool GLSurfaceEGLQt::InitializeExtensionSettingsOneOff()
{
return s_initialized;
}
bool GLSurfaceEGLQt::Initialize(GLSurfaceFormat format)
{
Q_ASSERT(!m_surfaceBuffer);
m_format = format;
EGLDisplay display = GLContextHelper::getEGLDisplay();
if (!display) {
LOG(ERROR) << "Trying to create surface with invalid display.";
return false;
}
const EGLint pbuffer_attributes[] = {
EGL_WIDTH, m_size.width(),
EGL_HEIGHT, m_size.height(),
EGL_LARGEST_PBUFFER, EGL_FALSE,
EGL_NONE
};
m_surfaceBuffer = eglCreatePbufferSurface(display,
g_config,
pbuffer_attributes);
if (!m_surfaceBuffer) {
VLOG(1) << "eglCreatePbufferSurface failed with error " << GetLastEGLErrorString();
Destroy();
return false;
}
return true;
}
void GLSurfaceEGLQt::Destroy()
{
if (m_surfaceBuffer) {
if (!eglDestroySurface(GLContextHelper::getEGLDisplay(), m_surfaceBuffer))
LOG(ERROR) << "eglDestroySurface failed with error " << GetLastEGLErrorString();
m_surfaceBuffer = 0;
}
}
bool GLSurfaceEGLQt::Resize(const gfx::Size& size, float scale_factor,
const gfx::ColorSpace &color_space, bool has_alpha)
{
if (size == m_size)
return true;
GLContext *currentContext = GLContext::GetCurrent();
bool wasCurrent = currentContext && currentContext->IsCurrent(this);
if (wasCurrent)
currentContext->ReleaseCurrent(this);
Destroy();
m_size = size;
if (!Initialize(GetFormat())) {
LOG(ERROR) << "Failed to resize pbuffer.";
return false;
}
if (wasCurrent)
return currentContext->MakeCurrent(this);
return true;
}
void* GLSurfaceEGLQt::GetHandle()
{
return reinterpret_cast<void*>(m_surfaceBuffer);
}
GLSurfacelessQtEGL::GLSurfacelessQtEGL(GLDisplayEGL *display, const gfx::Size& size)
: GLSurfaceQt(size)
{
}
bool GLSurfacelessQtEGL::Initialize(GLSurfaceFormat format)
{
m_format = format;
return true;
}
void GLSurfacelessQtEGL::Destroy()
{
}
bool GLSurfacelessQtEGL::IsSurfaceless() const
{
return true;
}
bool GLSurfacelessQtEGL::Resize(const gfx::Size& size, float scale_factor,
const gfx::ColorSpace &color_space, bool has_alpha)
{
m_size = size;
return true;
}
EGLSurface GLSurfacelessQtEGL::GetHandle()
{
return EGL_NO_SURFACE;
}
void* GLSurfacelessQtEGL::GetShareHandle()
{
return NULL;
}
} // namespace gl
#endif // !BUILDFLAG(IS_MAC) && !BUILDFLAG(IS_WIN)
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