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kwin/libkwineffects/kwinglutils_funcs.cpp
Martin Gräßlin 476adac337 Do not resolve glx functions specified in GLX 1.3 
According to the OpenGL ABI for Linux GLX 1.3 is a minimum requirement.
Therefore we do not need to resolve the symbols which are present in that
version.

KWin did always require at least 1.3, for all the resolved functions
there were checks in the Scene, but they might have been incorrect.
Instead now the GLX version is checked and OpenGL compositing is blocked
if there is not at least GLX 1.3.

REVIEW: 106704
2012-10-04 17:17:51 +02:00

427 lines
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/********************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2007 Rivo Laks <rivolaks@hot.ee>
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 "kwinglutils.h"
#include <dlfcn.h>
// Resolves given function, using getProcAddress
#ifdef KWIN_HAVE_EGL
#define GL_RESOLVE( function ) \
if (platformInterface == GlxPlatformInterface) \
function = (function ## _func)getProcAddress( #function ); \
else if (platformInterface == EglPlatformInterface) \
function = (function ## _func)eglGetProcAddress( #function );
// Same as above but tries to use function "symbolName"
// Useful when functionality is defined in an extension with a different name
#define GL_RESOLVE_WITH_EXT( function, symbolName ) \
if (platformInterface == GlxPlatformInterface) { \
function = (function ## _func)getProcAddress( #symbolName ); \
} else if (platformInterface == EglPlatformInterface) { \
function = (function ## _func)eglGetProcAddress( #symbolName ); \
}
#else
// same without the switch to egl
#define GL_RESOLVE( function ) function = (function ## _func)getProcAddress( #function );
#define GL_RESOLVE_WITH_EXT( function, symbolName ) \
function = (function ## _func)getProcAddress( #symbolName );
#endif
#define EGL_RESOLVE( function ) function = (function ## _func)eglGetProcAddress( #function );
namespace KWin
{
#ifndef KWIN_HAVE_OPENGLES
// Function pointers
glXGetProcAddress_func glXGetProcAddress;
// GLX 1.3
glXQueryDrawable_func glXQueryDrawable;
// texture_from_pixmap extension functions
glXReleaseTexImageEXT_func glXReleaseTexImageEXT;
glXBindTexImageEXT_func glXBindTexImageEXT;
// glXCopySubBufferMESA
glXCopySubBuffer_func glXCopySubBuffer;
// video_sync extension functions
glXGetVideoSync_func glXGetVideoSync;
glXWaitVideoSync_func glXWaitVideoSync;
glXSwapInterval_func glXSwapInterval;
// glActiveTexture
glActiveTexture_func glActiveTexture;
// framebuffer_object extension functions
glIsRenderbuffer_func glIsRenderbuffer;
glBindRenderbuffer_func glBindRenderbuffer;
glDeleteRenderbuffers_func glDeleteRenderbuffers;
glGenRenderbuffers_func glGenRenderbuffers;
glRenderbufferStorage_func glRenderbufferStorage;
glGetRenderbufferParameteriv_func glGetRenderbufferParameteriv;
glIsFramebuffer_func glIsFramebuffer;
glBindFramebuffer_func glBindFramebuffer;
glDeleteFramebuffers_func glDeleteFramebuffers;
glGenFramebuffers_func glGenFramebuffers;
glCheckFramebufferStatus_func glCheckFramebufferStatus;
glFramebufferTexture1D_func glFramebufferTexture1D;
glFramebufferTexture2D_func glFramebufferTexture2D;
glFramebufferTexture3D_func glFramebufferTexture3D;
glFramebufferRenderbuffer_func glFramebufferRenderbuffer;
glGetFramebufferAttachmentParameteriv_func glGetFramebufferAttachmentParameteriv;
glGenerateMipmap_func glGenerateMipmap;
glBlitFramebuffer_func glBlitFramebuffer;
// Shader functions
glCreateShader_func glCreateShader;
glShaderSource_func glShaderSource;
glCompileShader_func glCompileShader;
glDeleteShader_func glDeleteShader;
glCreateProgram_func glCreateProgram;
glAttachShader_func glAttachShader;
glLinkProgram_func glLinkProgram;
glUseProgram_func glUseProgram;
glDeleteProgram_func glDeleteProgram;
glGetShaderInfoLog_func glGetShaderInfoLog;
glGetProgramInfoLog_func glGetProgramInfoLog;
glGetProgramiv_func glGetProgramiv;
glGetShaderiv_func glGetShaderiv;
glUniform1f_func glUniform1f;
glUniform2f_func glUniform2f;
glUniform3f_func glUniform3f;
glUniform4f_func glUniform4f;
glUniform1i_func glUniform1i;
glUniform1fv_func glUniform1fv;
glUniform2fv_func glUniform2fv;
glUniform3fv_func glUniform3fv;
glUniform4fv_func glUniform4fv;
glGetUniformfv_func glGetUniformfv;
glUniformMatrix4fv_func glUniformMatrix4fv;
glValidateProgram_func glValidateProgram;
glGetUniformLocation_func glGetUniformLocation;
glVertexAttrib1f_func glVertexAttrib1f;
glGetAttribLocation_func glGetAttribLocation;
glBindAttribLocation_func glBindAttribLocation;
glGenProgramsARB_func glGenProgramsARB;
glBindProgramARB_func glBindProgramARB;
glProgramStringARB_func glProgramStringARB;
glProgramLocalParameter4fARB_func glProgramLocalParameter4fARB;
glDeleteProgramsARB_func glDeleteProgramsARB;
glGetProgramivARB_func glGetProgramivARB;
// vertex buffer objects
glGenBuffers_func glGenBuffers;
glDeleteBuffers_func glDeleteBuffers;
glBindBuffer_func glBindBuffer;
glBufferData_func glBufferData;
glEnableVertexAttribArray_func glEnableVertexAttribArray;
glDisableVertexAttribArray_func glDisableVertexAttribArray;
glVertexAttribPointer_func glVertexAttribPointer;
static glXFuncPtr getProcAddress(const char* name)
{
glXFuncPtr ret = NULL;
if (glXGetProcAddress != NULL)
ret = glXGetProcAddress((const GLubyte*) name);
if (ret == NULL)
ret = (glXFuncPtr) dlsym(RTLD_DEFAULT, name);
return ret;
}
void glxResolveFunctions()
{
// handle OpenGL extensions functions
glXGetProcAddress = (glXGetProcAddress_func) getProcAddress("glXGetProcAddress");
if (glXGetProcAddress == NULL)
glXGetProcAddress = (glXGetProcAddress_func) getProcAddress("glXGetProcAddressARB");
glXQueryDrawable = (glXQueryDrawable_func) getProcAddress("glXQueryDrawable");
if (hasGLExtension("GLX_EXT_texture_from_pixmap")) {
glXBindTexImageEXT = (glXBindTexImageEXT_func) getProcAddress("glXBindTexImageEXT");
glXReleaseTexImageEXT = (glXReleaseTexImageEXT_func) getProcAddress("glXReleaseTexImageEXT");
} else {
glXBindTexImageEXT = NULL;
glXReleaseTexImageEXT = NULL;
}
if (hasGLExtension("GLX_MESA_copy_sub_buffer"))
glXCopySubBuffer = (glXCopySubBuffer_func) getProcAddress("glXCopySubBufferMESA");
else
glXCopySubBuffer = NULL;
if (hasGLExtension("GLX_SGI_video_sync")) {
glXGetVideoSync = (glXGetVideoSync_func) getProcAddress("glXGetVideoSyncSGI");
glXWaitVideoSync = (glXWaitVideoSync_func) getProcAddress("glXWaitVideoSyncSGI");
} else {
glXGetVideoSync = NULL;
glXWaitVideoSync = NULL;
}
if (hasGLExtension("GLX_SGI_swap_control")) {
glXSwapInterval = (glXSwapInterval_func) getProcAddress("glXSwapIntervalSGI");
} else if (hasGLExtension("GLX_EXT_swap_control")) {
glXSwapInterval = (glXSwapInterval_func) getProcAddress("glXSwapIntervalEXT");
} else if (hasGLExtension("GLX_MESA_swap_control")) {
glXSwapInterval = (glXSwapInterval_func) getProcAddress("glXSwapIntervalMESA");
} else if (hasGLExtension("GLX_OML_sync_control")) {
glXSwapInterval = (glXSwapInterval_func) getProcAddress("glXSwapIntervalOML");
} else {
glXSwapInterval = NULL;
}
}
#endif
#ifdef KWIN_HAVE_EGL
// EGL
eglCreateImageKHR_func eglCreateImageKHR;
eglDestroyImageKHR_func eglDestroyImageKHR;
eglPostSubBufferNV_func eglPostSubBufferNV;
// GLES
glEGLImageTargetTexture2DOES_func glEGLImageTargetTexture2DOES;
void eglResolveFunctions()
{
if (hasGLExtension("EGL_KHR_image") ||
(hasGLExtension("EGL_KHR_image_base") &&
hasGLExtension("EGL_KHR_image_pixmap"))) {
eglCreateImageKHR = (eglCreateImageKHR_func)eglGetProcAddress("eglCreateImageKHR");
eglDestroyImageKHR = (eglDestroyImageKHR_func)eglGetProcAddress("eglDestroyImageKHR");
} else {
eglCreateImageKHR = NULL;
eglDestroyImageKHR = NULL;
}
if (hasGLExtension("EGL_NV_post_sub_buffer")) {
eglPostSubBufferNV = (eglPostSubBufferNV_func)eglGetProcAddress("eglPostSubBufferNV");
} else {
eglPostSubBufferNV = NULL;
}
}
#endif
void glResolveFunctions(OpenGLPlatformInterface platformInterface)
{
#ifndef KWIN_HAVE_OPENGLES
if (hasGLExtension("GL_ARB_multitexture")) {
GL_RESOLVE_WITH_EXT(glActiveTexture, glActiveTextureARB);
// Get number of texture units
glGetIntegerv(GL_MAX_TEXTURE_UNITS, &glTextureUnitsCount);
} else {
glActiveTexture = NULL;
glTextureUnitsCount = 0;
}
if (hasGLExtension("GL_ARB_framebuffer_object")) {
// see http://www.opengl.org/registry/specs/ARB/framebuffer_object.txt
GL_RESOLVE(glIsRenderbuffer);
GL_RESOLVE(glBindRenderbuffer);
GL_RESOLVE(glDeleteRenderbuffers);
GL_RESOLVE(glGenRenderbuffers);
GL_RESOLVE(glRenderbufferStorage);
GL_RESOLVE(glGetRenderbufferParameteriv);
GL_RESOLVE(glIsFramebuffer);
GL_RESOLVE(glBindFramebuffer);
GL_RESOLVE(glDeleteFramebuffers);
GL_RESOLVE(glGenFramebuffers);
GL_RESOLVE(glCheckFramebufferStatus);
GL_RESOLVE(glFramebufferTexture1D);
GL_RESOLVE(glFramebufferTexture2D);
GL_RESOLVE(glFramebufferTexture3D);
GL_RESOLVE(glFramebufferRenderbuffer);
GL_RESOLVE(glGetFramebufferAttachmentParameteriv);
GL_RESOLVE(glGenerateMipmap);
} else if (hasGLExtension("GL_EXT_framebuffer_object")) {
// see http://www.opengl.org/registry/specs/EXT/framebuffer_object.txt
GL_RESOLVE_WITH_EXT(glIsRenderbuffer, glIsRenderbufferEXT);
GL_RESOLVE_WITH_EXT(glBindRenderbuffer, glBindRenderbufferEXT);
GL_RESOLVE_WITH_EXT(glDeleteRenderbuffers, glDeleteRenderbuffersEXT);
GL_RESOLVE_WITH_EXT(glGenRenderbuffers, glGenRenderbuffersEXT);
GL_RESOLVE_WITH_EXT(glRenderbufferStorage, glRenderbufferStorageEXT);
GL_RESOLVE_WITH_EXT(glGetRenderbufferParameteriv, glGetRenderbufferParameterivEXT);
GL_RESOLVE_WITH_EXT(glIsFramebuffer, glIsFramebufferEXT);
GL_RESOLVE_WITH_EXT(glBindFramebuffer, glBindFramebufferEXT);
GL_RESOLVE_WITH_EXT(glDeleteFramebuffers, glDeleteFramebuffersEXT);
GL_RESOLVE_WITH_EXT(glGenFramebuffers, glGenFramebuffersEXT);
GL_RESOLVE_WITH_EXT(glCheckFramebufferStatus, glCheckFramebufferStatusEXT);
GL_RESOLVE_WITH_EXT(glFramebufferTexture1D, glFramebufferTexture1DEXT);
GL_RESOLVE_WITH_EXT(glFramebufferTexture2D, glFramebufferTexture2DEXT);
GL_RESOLVE_WITH_EXT(glFramebufferTexture3D, glFramebufferTexture3DEXT);
GL_RESOLVE_WITH_EXT(glFramebufferRenderbuffer, glFramebufferRenderbufferEXT);
GL_RESOLVE_WITH_EXT(glGetFramebufferAttachmentParameteriv, glGetFramebufferAttachmentParameterivEXT);
GL_RESOLVE_WITH_EXT(glGenerateMipmap, glGenerateMipmapEXT);
} else {
glIsRenderbuffer = NULL;
glBindRenderbuffer = NULL;
glDeleteRenderbuffers = NULL;
glGenRenderbuffers = NULL;
glRenderbufferStorage = NULL;
glGetRenderbufferParameteriv = NULL;
glIsFramebuffer = NULL;
glBindFramebuffer = NULL;
glDeleteFramebuffers = NULL;
glGenFramebuffers = NULL;
glCheckFramebufferStatus = NULL;
glFramebufferTexture1D = NULL;
glFramebufferTexture2D = NULL;
glFramebufferTexture3D = NULL;
glFramebufferRenderbuffer = NULL;
glGetFramebufferAttachmentParameteriv = NULL;
glGenerateMipmap = NULL;
}
if (hasGLExtension("GL_ARB_framebuffer_object")) {
// see http://www.opengl.org/registry/specs/ARB/framebuffer_object.txt
GL_RESOLVE(glBlitFramebuffer);
} else if (hasGLExtension("GL_EXT_framebuffer_blit")) {
// see http://www.opengl.org/registry/specs/EXT/framebuffer_blit.txt
GL_RESOLVE_WITH_EXT(glBlitFramebuffer, glBlitFramebufferEXT);
} else {
glBlitFramebuffer = NULL;
}
if (hasGLExtension("GL_ARB_shader_objects")) {
// see http://www.opengl.org/registry/specs/ARB/shader_objects.txt
GL_RESOLVE_WITH_EXT(glCreateShader, glCreateShaderObjectARB);
GL_RESOLVE_WITH_EXT(glShaderSource, glShaderSourceARB);
GL_RESOLVE_WITH_EXT(glCompileShader, glCompileShaderARB);
GL_RESOLVE_WITH_EXT(glDeleteShader, glDeleteObjectARB);
GL_RESOLVE_WITH_EXT(glCreateProgram, glCreateProgramObjectARB);
GL_RESOLVE_WITH_EXT(glAttachShader, glAttachObjectARB);
GL_RESOLVE_WITH_EXT(glLinkProgram, glLinkProgramARB);
GL_RESOLVE_WITH_EXT(glUseProgram, glUseProgramObjectARB);
GL_RESOLVE_WITH_EXT(glDeleteProgram, glDeleteObjectARB);
GL_RESOLVE_WITH_EXT(glGetShaderInfoLog, glGetInfoLogARB);
GL_RESOLVE_WITH_EXT(glGetProgramInfoLog, glGetInfoLogARB);
GL_RESOLVE_WITH_EXT(glGetProgramiv, glGetObjectParameterivARB);
GL_RESOLVE_WITH_EXT(glGetShaderiv, glGetObjectParameterivARB);
GL_RESOLVE_WITH_EXT(glUniform1f, glUniform1fARB);
GL_RESOLVE_WITH_EXT(glUniform2f, glUniform2fARB);
GL_RESOLVE_WITH_EXT(glUniform3f, glUniform3fARB);
GL_RESOLVE_WITH_EXT(glUniform4f, glUniform4fARB);
GL_RESOLVE_WITH_EXT(glUniform1i, glUniform1iARB);
GL_RESOLVE_WITH_EXT(glUniform1fv, glUniform1fvARB);
GL_RESOLVE_WITH_EXT(glUniform2fv, glUniform2fvARB);
GL_RESOLVE_WITH_EXT(glUniform3fv, glUniform3fvARB);
GL_RESOLVE_WITH_EXT(glUniform4fv, glUniform4fvARB);
GL_RESOLVE_WITH_EXT(glUniformMatrix4fv, glUniformMatrix4fvARB);
GL_RESOLVE_WITH_EXT(glValidateProgram, glValidateProgramARB);
GL_RESOLVE_WITH_EXT(glGetUniformLocation, glGetUniformLocationARB);
GL_RESOLVE_WITH_EXT(glGetUniformfv, glGetUniformfvARB);
} else {
glCreateShader = NULL;
glShaderSource = NULL;
glCompileShader = NULL;
glDeleteShader = NULL;
glCreateProgram = NULL;
glAttachShader = NULL;
glLinkProgram = NULL;
glUseProgram = NULL;
glDeleteProgram = NULL;
glGetShaderInfoLog = NULL;
glGetProgramInfoLog = NULL;
glGetProgramiv = NULL;
glGetShaderiv = NULL;
glUniform1f = NULL;
glUniform2f = NULL;
glUniform3f = NULL;
glUniform4f = NULL;
glUniform1i = NULL;
glUniform1fv = NULL;
glUniform2fv = NULL;
glUniform3fv = NULL;
glUniform4fv = NULL;
glUniformMatrix4fv = NULL;
glValidateProgram = NULL;
glGetUniformLocation = NULL;
glGetUniformfv = NULL;
}
if (hasGLExtension("GL_ARB_vertex_shader")) {
// see http://www.opengl.org/registry/specs/ARB/vertex_shader.txt
GL_RESOLVE_WITH_EXT(glVertexAttrib1f, glVertexAttrib1fARB);
GL_RESOLVE_WITH_EXT(glBindAttribLocation, glBindAttribLocationARB);
GL_RESOLVE_WITH_EXT(glGetAttribLocation, glGetAttribLocationARB);
GL_RESOLVE_WITH_EXT(glEnableVertexAttribArray, glEnableVertexAttribArrayARB);
GL_RESOLVE_WITH_EXT(glDisableVertexAttribArray, glDisableVertexAttribArrayARB);
GL_RESOLVE_WITH_EXT(glVertexAttribPointer, glVertexAttribPointerARB);
} else {
glVertexAttrib1f = NULL;
glBindAttribLocation = NULL;
glGetAttribLocation = NULL;
glEnableVertexAttribArray = NULL;
glDisableVertexAttribArray = NULL;
glVertexAttribPointer = NULL;
}
if (hasGLExtension("GL_ARB_fragment_program") && hasGLExtension("GL_ARB_vertex_program")) {
// see http://www.opengl.org/registry/specs/ARB/fragment_program.txt
GL_RESOLVE(glProgramStringARB);
GL_RESOLVE(glBindProgramARB);
GL_RESOLVE(glDeleteProgramsARB);
GL_RESOLVE(glGenProgramsARB);
GL_RESOLVE(glProgramLocalParameter4fARB);
GL_RESOLVE(glGetProgramivARB);
} else {
glProgramStringARB = NULL;
glBindProgramARB = NULL;
glDeleteProgramsARB = NULL;
glGenProgramsARB = NULL;
glProgramLocalParameter4fARB = NULL;
glGetProgramivARB = NULL;
}
if (hasGLExtension("GL_ARB_vertex_buffer_object")) {
// see http://www.opengl.org/registry/specs/ARB/vertex_buffer_object.txt
GL_RESOLVE_WITH_EXT(glGenBuffers, glGenBuffersARB);
GL_RESOLVE_WITH_EXT(glDeleteBuffers, glDeleteBuffersARB);
GL_RESOLVE_WITH_EXT(glBindBuffer, glBindBufferARB);
GL_RESOLVE_WITH_EXT(glBufferData, glBufferDataARB);
} else {
glGenBuffers = NULL;
glDeleteBuffers = NULL;
glBindBuffer = NULL;
glBufferData = NULL;
}
#endif
#ifdef KWIN_HAVE_EGL
if (platformInterface == EglPlatformInterface) {
if (hasGLExtension("GL_OES_EGL_image")) {
glEGLImageTargetTexture2DOES = (glEGLImageTargetTexture2DOES_func)eglGetProcAddress("glEGLImageTargetTexture2DOES");
} else {
glEGLImageTargetTexture2DOES = NULL;
}
}
#endif
}
} // namespace
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