1fb9f6f13a
The main advantage of SPDX license identifiers over the traditional license headers is that it's more difficult to overlook inappropriate licenses for kwin, for example GPL 3. We also don't have to copy a lot of boilerplate text. In order to create this change, I ran licensedigger -r -c from the toplevel source directory.
105 lines
3.4 KiB
C++
105 lines
3.4 KiB
C++
/********************************************************************
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KWin - the KDE window manager
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This file is part of the KDE project.
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SPDX-FileCopyrightText: 2015 Martin Flöser <mgraesslin@kde.org>
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SPDX-FileCopyrightText: 2019 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*********************************************************************/
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#include "eglhelpers.h"
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#include <logging.h>
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#include <QOpenGLContext>
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namespace KWin
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{
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namespace QPA
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{
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bool isOpenGLES()
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{
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if (qstrcmp(qgetenv("KWIN_COMPOSE"), "O2ES") == 0) {
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return true;
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}
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return QOpenGLContext::openGLModuleType() == QOpenGLContext::LibGLES;
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}
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EGLConfig configFromFormat(EGLDisplay display, const QSurfaceFormat &surfaceFormat, EGLint surfaceType)
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{
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// qMax as these values are initialized to -1 by default.
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const EGLint redSize = qMax(surfaceFormat.redBufferSize(), 0);
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const EGLint greenSize = qMax(surfaceFormat.greenBufferSize(), 0);
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const EGLint blueSize = qMax(surfaceFormat.blueBufferSize(), 0);
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const EGLint alphaSize = qMax(surfaceFormat.alphaBufferSize(), 0);
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const EGLint depthSize = qMax(surfaceFormat.depthBufferSize(), 0);
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const EGLint stencilSize = qMax(surfaceFormat.stencilBufferSize(), 0);
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const EGLint renderableType = isOpenGLES() ? EGL_OPENGL_ES2_BIT : EGL_OPENGL_BIT;
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// Not setting samples as QtQuick doesn't need it.
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const QVector<EGLint> attributes {
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EGL_SURFACE_TYPE, surfaceType,
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EGL_RED_SIZE, redSize,
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EGL_GREEN_SIZE, greenSize,
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EGL_BLUE_SIZE, blueSize,
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EGL_ALPHA_SIZE, alphaSize,
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EGL_DEPTH_SIZE, depthSize,
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EGL_STENCIL_SIZE, stencilSize,
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EGL_RENDERABLE_TYPE, renderableType,
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EGL_NONE
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};
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EGLint configCount;
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EGLConfig configs[1024];
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if (!eglChooseConfig(display, attributes.data(), configs, 1, &configCount)) {
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// FIXME: Don't bail out yet, we should try to find the most suitable config.
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qCWarning(KWIN_QPA, "eglChooseConfig failed: %x", eglGetError());
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return EGL_NO_CONFIG_KHR;
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}
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if (configCount != 1) {
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qCWarning(KWIN_QPA) << "eglChooseConfig did not return any configs";
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return EGL_NO_CONFIG_KHR;
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}
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return configs[0];
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}
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QSurfaceFormat formatFromConfig(EGLDisplay display, EGLConfig config)
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{
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int redSize = 0;
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int blueSize = 0;
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int greenSize = 0;
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int alphaSize = 0;
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int stencilSize = 0;
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int depthSize = 0;
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int sampleCount = 0;
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eglGetConfigAttrib(display, config, EGL_RED_SIZE, &redSize);
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eglGetConfigAttrib(display, config, EGL_GREEN_SIZE, &greenSize);
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eglGetConfigAttrib(display, config, EGL_BLUE_SIZE, &blueSize);
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eglGetConfigAttrib(display, config, EGL_ALPHA_SIZE, &alphaSize);
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eglGetConfigAttrib(display, config, EGL_STENCIL_SIZE, &stencilSize);
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eglGetConfigAttrib(display, config, EGL_DEPTH_SIZE, &depthSize);
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eglGetConfigAttrib(display, config, EGL_SAMPLES, &sampleCount);
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QSurfaceFormat format;
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format.setRedBufferSize(redSize);
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format.setGreenBufferSize(greenSize);
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format.setBlueBufferSize(blueSize);
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format.setAlphaBufferSize(alphaSize);
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format.setStencilBufferSize(stencilSize);
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format.setDepthBufferSize(depthSize);
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format.setSamples(sampleCount);
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format.setRenderableType(isOpenGLES() ? QSurfaceFormat::OpenGLES : QSurfaceFormat::OpenGL);
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format.setStereo(false);
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return format;
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}
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} // namespace QPA
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} // namespace KWin
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