dcf7f40c18
Summary: Method doesn't do anything. If at some point we want to resolve egl functions again, it should be done in the Platform, just like glxResolveFunctions is nowadays done in the platform. Reviewers: #kwin, #plasma Subscribers: plasma-devel, kwin Tags: #kwin Differential Revision: https://phabricator.kde.org/D3391
102 lines
4 KiB
C++
102 lines
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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Copyright (C) 2007 Rivo Laks <rivolaks@hot.ee>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#include "kwinglutils.h"
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#include "kwinglplatform.h"
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// Resolves given function, using getProcAddress
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// Useful when functionality is defined in an extension with a different name
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#define GL_RESOLVE_WITH_EXT( function, symbolName ) \
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function = (function ## _func)resolveFunction( #symbolName );
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namespace KWin
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{
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static GLenum GetGraphicsResetStatus();
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static void ReadnPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format,
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GLenum type, GLsizei bufSize, GLvoid *data);
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static void GetnUniformfv(GLuint program, GLint location, GLsizei bufSize, GLfloat *params);
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// GL_ARB_robustness / GL_EXT_robustness
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glGetGraphicsResetStatus_func glGetGraphicsResetStatus;
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glReadnPixels_func glReadnPixels;
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glGetnUniformfv_func glGetnUniformfv;
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void glResolveFunctions(std::function<resolveFuncPtr(const char*)> resolveFunction)
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{
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const bool haveArbRobustness = hasGLExtension(QByteArrayLiteral("GL_ARB_robustness"));
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const bool haveExtRobustness = hasGLExtension(QByteArrayLiteral("GL_EXT_robustness"));
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bool robustContext = false;
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if (GLPlatform::instance()->isGLES()) {
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if (haveExtRobustness) {
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GLint value = 0;
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glGetIntegerv(GL_CONTEXT_ROBUST_ACCESS_EXT, &value);
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robustContext = (value != 0);
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}
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} else {
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if (haveArbRobustness) {
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if (hasGLVersion(3, 0)) {
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GLint value = 0;
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glGetIntegerv(GL_CONTEXT_FLAGS, &value);
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if (value & GL_CONTEXT_FLAG_ROBUST_ACCESS_BIT_ARB) {
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robustContext = true;
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}
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} else {
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robustContext = true;
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}
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}
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}
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if (robustContext && haveArbRobustness) {
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// See http://www.opengl.org/registry/specs/ARB/robustness.txt
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GL_RESOLVE_WITH_EXT(glGetGraphicsResetStatus, glGetGraphicsResetStatusARB);
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GL_RESOLVE_WITH_EXT(glReadnPixels, glReadnPixelsARB);
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GL_RESOLVE_WITH_EXT(glGetnUniformfv, glGetnUniformfvARB);
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} else if (robustContext && haveExtRobustness) {
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// See http://www.khronos.org/registry/gles/extensions/EXT/EXT_robustness.txt
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glGetGraphicsResetStatus = (glGetGraphicsResetStatus_func) resolveFunction("glGetGraphicsResetStatusEXT");
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glReadnPixels = (glReadnPixels_func) resolveFunction("glReadnPixelsEXT");
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glGetnUniformfv = (glGetnUniformfv_func) resolveFunction("glGetnUniformfvEXT");
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} else {
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glGetGraphicsResetStatus = KWin::GetGraphicsResetStatus;
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glReadnPixels = KWin::ReadnPixels;
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glGetnUniformfv = KWin::GetnUniformfv;
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}
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}
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static GLenum GetGraphicsResetStatus()
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{
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return GL_NO_ERROR;
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}
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static void ReadnPixels(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format,
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GLenum type, GLsizei bufSize, GLvoid *data)
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{
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Q_UNUSED(bufSize)
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glReadPixels(x, y, width, height, format, type, data);
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}
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static void GetnUniformfv(GLuint program, GLint location, GLsizei bufSize, GLfloat *params)
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{
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Q_UNUSED(bufSize)
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glGetUniformfv(program, location, params);
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}
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} // namespace
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