187 lines
5.5 KiB
C++
187 lines
5.5 KiB
C++
/********************************************************************
|
|
KWin - the KDE window manager
|
|
This file is part of the KDE project.
|
|
|
|
Copyright (C) 2015 Martin Gräßlin <mgraesslin@kde.org>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*********************************************************************/
|
|
#include "abstractplatformcontext.h"
|
|
#include "integration.h"
|
|
|
|
namespace KWin
|
|
{
|
|
|
|
namespace QPA
|
|
{
|
|
|
|
static EGLConfig configFromGLFormat(EGLDisplay dpy, const QSurfaceFormat &format)
|
|
{
|
|
#define SIZE( __buffer__ ) format.__buffer__##BufferSize() > 0 ? format.__buffer__##BufferSize() : 0
|
|
// not setting samples as QtQuick doesn't need it
|
|
const EGLint config_attribs[] = {
|
|
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
|
|
EGL_RED_SIZE, SIZE(red),
|
|
EGL_GREEN_SIZE, SIZE(green),
|
|
EGL_BLUE_SIZE, SIZE(blue),
|
|
EGL_ALPHA_SIZE, SIZE(alpha),
|
|
EGL_DEPTH_SIZE, SIZE(depth),
|
|
EGL_STENCIL_SIZE, SIZE(stencil),
|
|
#ifdef KWIN_HAVE_OPENGLES
|
|
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
|
|
#else
|
|
EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
|
|
#endif
|
|
EGL_NONE,
|
|
};
|
|
#undef SIZE
|
|
|
|
EGLint count;
|
|
EGLConfig configs[1024];
|
|
if (eglChooseConfig(dpy, config_attribs, configs, 1, &count) == EGL_FALSE) {
|
|
return 0;
|
|
}
|
|
if (count != 1) {
|
|
return 0;
|
|
}
|
|
return configs[0];
|
|
}
|
|
|
|
static QSurfaceFormat formatFromConfig(EGLDisplay dpy, EGLConfig config)
|
|
{
|
|
QSurfaceFormat format;
|
|
EGLint value = 0;
|
|
#define HELPER(__egl__, __qt__) \
|
|
eglGetConfigAttrib(dpy, config, EGL_##__egl__, &value); \
|
|
format.set##__qt__(value); \
|
|
value = 0;
|
|
|
|
#define BUFFER_HELPER(__eglColor__, __color__) \
|
|
HELPER(__eglColor__##_SIZE, __color__##BufferSize)
|
|
|
|
BUFFER_HELPER(RED, Red)
|
|
BUFFER_HELPER(GREEN, Green)
|
|
BUFFER_HELPER(BLUE, Blue)
|
|
BUFFER_HELPER(ALPHA, Alpha)
|
|
BUFFER_HELPER(STENCIL, Stencil)
|
|
BUFFER_HELPER(DEPTH, Depth)
|
|
#undef BUFFER_HELPER
|
|
HELPER(SAMPLES, Samples)
|
|
#undef HELPER
|
|
#ifdef KWIN_HAVE_OPENGLES
|
|
format.setRenderableType(QSurfaceFormat::OpenGLES);
|
|
#else
|
|
format.setRenderableType(QSurfaceFormat::OpenGL);
|
|
#endif
|
|
format.setStereo(false);
|
|
|
|
return format;
|
|
}
|
|
|
|
AbstractPlatformContext::AbstractPlatformContext(QOpenGLContext *context, Integration *integration, EGLDisplay display)
|
|
: QPlatformOpenGLContext()
|
|
, m_integration(integration)
|
|
, m_eglDisplay(display)
|
|
, m_config(configFromGLFormat(m_eglDisplay, context->format()))
|
|
, m_format(formatFromConfig(m_eglDisplay, m_config))
|
|
{
|
|
}
|
|
|
|
AbstractPlatformContext::~AbstractPlatformContext()
|
|
{
|
|
if (m_context != EGL_NO_CONTEXT) {
|
|
eglDestroyContext(m_eglDisplay, m_context);
|
|
}
|
|
}
|
|
|
|
void AbstractPlatformContext::doneCurrent()
|
|
{
|
|
eglMakeCurrent(m_eglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
|
|
}
|
|
|
|
QSurfaceFormat AbstractPlatformContext::format() const
|
|
{
|
|
return m_format;
|
|
}
|
|
|
|
QFunctionPointer AbstractPlatformContext::getProcAddress(const QByteArray &procName)
|
|
{
|
|
return eglGetProcAddress(procName.constData());
|
|
}
|
|
|
|
bool AbstractPlatformContext::isValid() const
|
|
{
|
|
return m_context != EGL_NO_CONTEXT;
|
|
}
|
|
|
|
bool AbstractPlatformContext::bindApi()
|
|
{
|
|
#ifdef KWIN_HAVE_OPENGLES
|
|
if (eglBindAPI(EGL_OPENGL_ES_API) == EGL_FALSE) {
|
|
return false;
|
|
}
|
|
#else
|
|
if (eglBindAPI(EGL_OPENGL_API) == EGL_FALSE) {
|
|
return false;
|
|
}
|
|
#endif
|
|
return true;
|
|
}
|
|
|
|
void AbstractPlatformContext::createContext(EGLContext shareContext)
|
|
{
|
|
EGLContext context = EGL_NO_CONTEXT;
|
|
#ifdef KWIN_HAVE_OPENGLES
|
|
const EGLint context_attribs[] = {
|
|
EGL_CONTEXT_CLIENT_VERSION, 2,
|
|
EGL_NONE
|
|
};
|
|
|
|
context = eglCreateContext(eglDisplay(), config(), shareContext, context_attribs);
|
|
#else
|
|
const EGLint context_attribs_31_core[] = {
|
|
EGL_CONTEXT_MAJOR_VERSION_KHR, m_format.majorVersion(),
|
|
EGL_CONTEXT_MINOR_VERSION_KHR, m_format.minorVersion(),
|
|
EGL_CONTEXT_FLAGS_KHR, EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR,
|
|
EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR, m_format.profile() == QSurfaceFormat::CoreProfile ? EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR : EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR,
|
|
EGL_NONE
|
|
};
|
|
|
|
const EGLint context_attribs_legacy[] = {
|
|
EGL_CONTEXT_CLIENT_VERSION, 2,
|
|
EGL_NONE
|
|
};
|
|
|
|
const char* eglExtensionsCString = eglQueryString(eglDisplay(), EGL_EXTENSIONS);
|
|
const QList<QByteArray> extensions = QByteArray::fromRawData(eglExtensionsCString, qstrlen(eglExtensionsCString)).split(' ');
|
|
|
|
// Try to create a 3.1 core context
|
|
if (m_format.majorVersion() >= 3 && extensions.contains(QByteArrayLiteral("EGL_KHR_create_context"))) {
|
|
context = eglCreateContext(eglDisplay(), config(), shareContext, context_attribs_31_core);
|
|
}
|
|
|
|
if (context == EGL_NO_CONTEXT) {
|
|
context = eglCreateContext(eglDisplay(), config(), shareContext, context_attribs_legacy);
|
|
}
|
|
#endif
|
|
|
|
if (context == EGL_NO_CONTEXT) {
|
|
return;
|
|
}
|
|
m_context = context;
|
|
}
|
|
|
|
}
|
|
}
|