c24e315a9b
It doesn't make much sense any more as we do no longer link EGL since the switch to epoxy. And epoxy pulls it in at runtime if needed. Even more on Wayland it's just plain stupid to have EGL disabled. So removing the option just simplifies our code base without any disadvantages. REVIEW: 124695
126 lines
4.6 KiB
C++
126 lines
4.6 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 <dlfcn.h>
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// Resolves given function, using getProcAddress
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#define GL_RESOLVE( function ) \
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if (platformInterface == GlxPlatformInterface) \
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function = (function ## _func)getProcAddress( #function ); \
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else if (platformInterface == EglPlatformInterface) \
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function = (function ## _func)eglGetProcAddress( #function );
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// Same as above but tries to use function "symbolName"
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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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if (platformInterface == GlxPlatformInterface) { \
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function = (function ## _func)getProcAddress( #symbolName ); \
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} else if (platformInterface == EglPlatformInterface) { \
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function = (function ## _func)eglGetProcAddress( #symbolName ); \
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}
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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_MESA_swap_control
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glXSwapIntervalMESA_func glXSwapIntervalMESA;
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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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typedef void (*glXFuncPtr)();
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#ifndef KWIN_HAVE_OPENGLES
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static glXFuncPtr getProcAddress(const char* name)
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{
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glXFuncPtr ret = glXGetProcAddress((const GLubyte*) name);
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if (ret == nullptr)
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ret = (glXFuncPtr) dlsym(RTLD_DEFAULT, name);
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return ret;
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}
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void glxResolveFunctions()
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{
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if (hasGLExtension(QByteArrayLiteral("GLX_MESA_swap_control")))
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glXSwapIntervalMESA = (glXSwapIntervalMESA_func) getProcAddress("glXSwapIntervalMESA");
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else
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glXSwapIntervalMESA = nullptr;
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}
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#endif
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void eglResolveFunctions()
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{
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}
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void glResolveFunctions(OpenGLPlatformInterface platformInterface)
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{
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#ifndef KWIN_HAVE_OPENGLES
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if (hasGLExtension(QByteArrayLiteral("GL_ARB_robustness"))) {
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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 {
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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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#else
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if (hasGLExtension(QByteArrayLiteral("GL_EXT_robustness"))) {
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// See http://www.khronos.org/registry/gles/extensions/EXT/EXT_robustness.txt
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glGetGraphicsResetStatus = (glGetGraphicsResetStatus_func) eglGetProcAddress("glGetGraphicsResetStatusEXT");
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glReadnPixels = (glReadnPixels_func) eglGetProcAddress("glReadnPixelsEXT");
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glGetnUniformfv = (glGetnUniformfv_func) eglGetProcAddress("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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#endif // KWIN_HAVE_OPENGLES
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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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