2c26215d7e
Summary: This patch implements using EGL_IMG_context_priority to request high-priority rendering contexts if the extension is available. EGL_IMG_context_priority is currently used in this fashion by e.g. Android's SurfaceFlinger (RenderEngine.cpp) and libweston (gl-renderer.c) and seems promising given this widespread acceptance. Reviewers: #kwin, graesslin, romangg, davidedmundson Subscribers: kwin Tags: #kwin Differential Revision: https://phabricator.kde.org/D11572
82 lines
3 KiB
C++
82 lines
3 KiB
C++
/********************************************************************
|
|
KWin - the KDE window manager
|
|
This file is part of the KDE project.
|
|
|
|
Copyright (C) 2017 Martin Flöser <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 "egl_context_attribute_builder.h"
|
|
#include <epoxy/egl.h>
|
|
|
|
namespace KWin
|
|
{
|
|
std::vector<int> EglContextAttributeBuilder::build() const
|
|
{
|
|
std::vector<int> attribs;
|
|
if (isVersionRequested()) {
|
|
attribs.emplace_back(EGL_CONTEXT_MAJOR_VERSION_KHR);
|
|
attribs.emplace_back(majorVersion());
|
|
attribs.emplace_back(EGL_CONTEXT_MINOR_VERSION_KHR);
|
|
attribs.emplace_back(minorVersion());
|
|
}
|
|
int contextFlags = 0;
|
|
if (isRobust()) {
|
|
attribs.emplace_back(EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_KHR);
|
|
attribs.emplace_back(EGL_LOSE_CONTEXT_ON_RESET_KHR);
|
|
contextFlags |= EGL_CONTEXT_OPENGL_ROBUST_ACCESS_BIT_KHR;
|
|
}
|
|
if (isForwardCompatible()) {
|
|
contextFlags |= EGL_CONTEXT_OPENGL_FORWARD_COMPATIBLE_BIT_KHR;
|
|
}
|
|
if (contextFlags != 0) {
|
|
attribs.emplace_back(EGL_CONTEXT_FLAGS_KHR);
|
|
attribs.emplace_back(contextFlags);
|
|
}
|
|
if (isCoreProfile() || isCompatibilityProfile()) {
|
|
attribs.emplace_back(EGL_CONTEXT_OPENGL_PROFILE_MASK_KHR);
|
|
if (isCoreProfile()) {
|
|
attribs.emplace_back(EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR);
|
|
} else if (isCompatibilityProfile()) {
|
|
attribs.emplace_back(EGL_CONTEXT_OPENGL_COMPATIBILITY_PROFILE_BIT_KHR);
|
|
}
|
|
}
|
|
if (isHighPriority()) {
|
|
attribs.emplace_back(EGL_CONTEXT_PRIORITY_LEVEL_IMG);
|
|
attribs.emplace_back(EGL_CONTEXT_PRIORITY_HIGH_IMG);
|
|
}
|
|
attribs.emplace_back(EGL_NONE);
|
|
return attribs;
|
|
}
|
|
|
|
std::vector<int> EglOpenGLESContextAttributeBuilder::build() const
|
|
{
|
|
std::vector<int> attribs;
|
|
attribs.emplace_back(EGL_CONTEXT_CLIENT_VERSION);
|
|
attribs.emplace_back(majorVersion());
|
|
if (isRobust()) {
|
|
attribs.emplace_back(EGL_CONTEXT_OPENGL_ROBUST_ACCESS_EXT);
|
|
attribs.emplace_back(EGL_TRUE);
|
|
attribs.emplace_back(EGL_CONTEXT_OPENGL_RESET_NOTIFICATION_STRATEGY_EXT);
|
|
attribs.emplace_back(EGL_LOSE_CONTEXT_ON_RESET_EXT);
|
|
}
|
|
if (isHighPriority()) {
|
|
attribs.emplace_back(EGL_CONTEXT_PRIORITY_LEVEL_IMG);
|
|
attribs.emplace_back(EGL_CONTEXT_PRIORITY_HIGH_IMG);
|
|
}
|
|
attribs.emplace_back(EGL_NONE);
|
|
return attribs;
|
|
}
|
|
|
|
}
|