Sweden-Number/dlls/opengl32/wgl_ext.c

132 lines
4.7 KiB
C

/* Support for window-specific OpenGL extensions.
*
* Copyright (c) 2004 Lionel Ulmer
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "winerror.h"
#include "wgl.h"
#include "wgl_ext.h"
#include "opengl_ext.h"
#include "wine/library.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(opengl);
/* Some WGL extensions... */
static const char *WGL_extensions_base = "WGL_ARB_extensions_string WGL_EXT_extensions_string";
static char *WGL_extensions = NULL;
/* Extensions-query functions */
BOOL query_function_pbuffers(const char *gl_version, const char *gl_extensions, const char *glx_extensions,
const char *server_glx_extensions, const char *client_glx_extensions)
{
return FALSE;
}
/***********************************************************************
* wglGetExtensionsStringEXT(OPENGL32.@)
*/
const char * WINAPI wglGetExtensionsStringEXT(void) {
TRACE("() returning \"%s\"\n", WGL_extensions);
return WGL_extensions;
}
/***********************************************************************
* wglGetExtensionsStringARB(OPENGL32.@)
*/
const char * WINAPI wglGetExtensionsStringARB(HDC hdc) {
TRACE("() returning \"%s\"\n", WGL_extensions);
return WGL_extensions;
}
static const struct {
const char *name;
BOOL (*query_function)(const char *gl_version, const char *gl_extensions, const char *glx_extensions,
const char *server_glx_extensions, const char *client_glx_extensions);
} extension_list[] = {
{ "WGL_ARB_pbuffer", query_function_pbuffers }
};
/* Used to initialize the WGL extension string at DLL loading */
void wgl_ext_initialize_extensions(Display *display, int screen)
{
int size = strlen(WGL_extensions_base);
const char *glx_extensions = glXQueryExtensionsString(display, screen);
const char *server_glx_extensions = glXQueryServerString(display, screen, GLX_EXTENSIONS);
const char *client_glx_extensions = glXGetClientString(display, GLX_EXTENSIONS);
const char *gl_extensions = (const char *) glGetString(GL_EXTENSIONS);
const char *gl_version = (const char *) glGetString(GL_VERSION);
int i;
TRACE("GL version : %s.\n", debugstr_a(gl_version));
TRACE("GL exts : %s.\n", debugstr_a(gl_extensions));
TRACE("GLX exts : %s.\n", debugstr_a(glx_extensions));
TRACE("Server GLX exts : %s.\n", debugstr_a(server_glx_extensions));
TRACE("Client GLX exts : %s.\n", debugstr_a(client_glx_extensions));
for (i = 0; i < (sizeof(extension_list) / sizeof(extension_list[0])); i++) {
if (extension_list[i].query_function(gl_version, gl_extensions, glx_extensions,
server_glx_extensions, client_glx_extensions)) {
size += strlen(extension_list[i].name) + 1;
}
}
/* For the moment, only 'base' extensions are supported. */
WGL_extensions = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size + 1);
if (WGL_extensions == NULL) {
WGL_extensions = (char *) WGL_extensions_base;
} else {
strcpy(WGL_extensions, WGL_extensions_base);
for (i = 0; i < (sizeof(extension_list) / sizeof(extension_list[0])); i++) {
if (extension_list[i].query_function(gl_version, gl_extensions, glx_extensions,
server_glx_extensions, client_glx_extensions)) {
strcat(WGL_extensions, " ");
strcat(WGL_extensions, extension_list[i].name);
}
}
}
TRACE("Supporting following WGL extensions : %s.\n", debugstr_a(WGL_extensions));
}
void wgl_ext_finalize_extensions(void)
{
if (WGL_extensions != WGL_extensions_base) {
HeapFree(GetProcessHeap(), 0, WGL_extensions);
}
}
/* Putting this at the end to prevent having to write the prototypes :-) */
WGL_extension wgl_extension_registry[] = {
{ "wglGetExtensionsStringARB", (void *) wglGetExtensionsStringARB, NULL, NULL},
{ "wglGetExtensionsStringEXT", (void *) wglGetExtensionsStringEXT, NULL, NULL}
};
int wgl_extension_registry_size = sizeof(wgl_extension_registry) / sizeof(wgl_extension_registry[0]);