557 lines
15 KiB
C
557 lines
15 KiB
C
/* Window-specific OpenGL functions implementation.
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*
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* Copyright (c) 1999 Lionel Ulmer
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include <stdlib.h>
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#include <string.h>
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#include "windef.h"
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#include "winbase.h"
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#include "winuser.h"
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#include "winerror.h"
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#include "wine_gl.h"
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#include "x11drv.h"
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#include "wgl.h"
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#include "opengl_ext.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(opengl);
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static GLXContext default_cx = NULL;
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static Display *default_display; /* display to use for default context */
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typedef struct wine_glcontext {
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HDC hdc;
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Display *display;
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GLXContext ctx;
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XVisualInfo *vis;
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struct wine_glcontext *next;
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struct wine_glcontext *prev;
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} Wine_GLContext;
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static Wine_GLContext *context_list;
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static inline Wine_GLContext *get_context_from_GLXContext(GLXContext ctx)
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{
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Wine_GLContext *ret;
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for (ret = context_list; ret; ret = ret->next) if (ctx == ret->ctx) break;
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return ret;
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}
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static inline void free_context(Wine_GLContext *context)
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{
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if (context->next != NULL) context->next->prev = context->prev;
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if (context->prev != NULL) context->prev->next = context->next;
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else context_list = context->next;
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HeapFree(GetProcessHeap(), 0, context);
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}
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static inline Wine_GLContext *alloc_context(void)
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{
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Wine_GLContext *ret;
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if ((ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(Wine_GLContext))))
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{
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ret->next = context_list;
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if (context_list) context_list->prev = ret;
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context_list = ret;
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}
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return ret;
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}
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inline static BOOL is_valid_context( Wine_GLContext *ctx )
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{
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Wine_GLContext *ptr;
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for (ptr = context_list; ptr; ptr = ptr->next) if (ptr == ctx) break;
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return (ptr != NULL);
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}
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/* retrieve the X display to use on a given DC */
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inline static Display *get_display( HDC hdc )
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{
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Display *display;
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enum x11drv_escape_codes escape = X11DRV_GET_DISPLAY;
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if (!ExtEscape( hdc, X11DRV_ESCAPE, sizeof(escape), (LPCSTR)&escape,
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sizeof(display), (LPSTR)&display )) display = NULL;
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return display;
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}
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/* retrieve the X drawable to use on a given DC */
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inline static Drawable get_drawable( HDC hdc )
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{
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Drawable drawable;
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enum x11drv_escape_codes escape = X11DRV_GET_DRAWABLE;
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if (!ExtEscape( hdc, X11DRV_ESCAPE, sizeof(escape), (LPCSTR)&escape,
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sizeof(drawable), (LPSTR)&drawable )) drawable = 0;
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return drawable;
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}
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/* retrieve the X drawable to use on a given DC */
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inline static Font get_font( HDC hdc )
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{
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Font font;
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enum x11drv_escape_codes escape = X11DRV_GET_FONT;
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if (!ExtEscape( hdc, X11DRV_ESCAPE, sizeof(escape), (LPCSTR)&escape,
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sizeof(font), (LPSTR)&font )) font = 0;
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return font;
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}
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/***********************************************************************
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* wglCreateContext (OPENGL32.@)
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*/
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HGLRC WINAPI wglCreateContext(HDC hdc)
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{
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XVisualInfo *vis;
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Wine_GLContext *ret;
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int num;
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XVisualInfo template;
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Display *display = get_display( hdc );
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TRACE("(%08x)\n", hdc);
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/* First, get the visual in use by the X11DRV */
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if (!display) return 0;
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template.visualid = GetPropA( GetDesktopWindow(), "__wine_x11_visual_id" );
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vis = XGetVisualInfo(display, VisualIDMask, &template, &num);
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if (vis == NULL) {
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ERR("NULL visual !!!\n");
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/* Need to set errors here */
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return NULL;
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}
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/* The context will be allocated in the wglMakeCurrent call */
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ENTER_GL();
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ret = alloc_context();
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LEAVE_GL();
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ret->hdc = hdc;
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ret->display = display;
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ret->vis = vis;
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TRACE(" creating context %p (GL context creation delayed)\n", ret);
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return (HGLRC) ret;
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}
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/***********************************************************************
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* wglCreateLayerContext (OPENGL32.@)
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*/
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HGLRC WINAPI wglCreateLayerContext(HDC hdc,
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int iLayerPlane) {
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FIXME("(%08x,%d): stub !\n", hdc, iLayerPlane);
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return NULL;
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}
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/***********************************************************************
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* wglCopyContext (OPENGL32.@)
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*/
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BOOL WINAPI wglCopyContext(HGLRC hglrcSrc,
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HGLRC hglrcDst,
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UINT mask) {
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FIXME("(%p,%p,%d)\n", hglrcSrc, hglrcDst, mask);
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return FALSE;
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}
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/***********************************************************************
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* wglDeleteContext (OPENGL32.@)
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*/
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BOOL WINAPI wglDeleteContext(HGLRC hglrc)
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{
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Wine_GLContext *ctx = (Wine_GLContext *) hglrc;
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BOOL ret = TRUE;
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TRACE("(%p)\n", hglrc);
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ENTER_GL();
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/* A game (Half Life not to name it) deletes twice the same context,
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* so make sure it is valid first */
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if (is_valid_context( ctx ))
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{
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if (ctx->ctx) glXDestroyContext(ctx->display, ctx->ctx);
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free_context(ctx);
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}
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else
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{
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WARN("Error deleting context !\n");
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SetLastError(ERROR_INVALID_HANDLE);
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ret = FALSE;
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}
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LEAVE_GL();
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return ret;
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}
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/***********************************************************************
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* wglDescribeLayerPlane (OPENGL32.@)
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*/
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BOOL WINAPI wglDescribeLayerPlane(HDC hdc,
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int iPixelFormat,
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int iLayerPlane,
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UINT nBytes,
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LPLAYERPLANEDESCRIPTOR plpd) {
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FIXME("(%08x,%d,%d,%d,%p)\n", hdc, iPixelFormat, iLayerPlane, nBytes, plpd);
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return FALSE;
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}
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/***********************************************************************
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* wglGetCurrentContext (OPENGL32.@)
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*/
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HGLRC WINAPI wglGetCurrentContext(void) {
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GLXContext gl_ctx;
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Wine_GLContext *ret;
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TRACE("()\n");
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ENTER_GL();
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gl_ctx = glXGetCurrentContext();
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ret = get_context_from_GLXContext(gl_ctx);
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LEAVE_GL();
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TRACE(" returning %p (GL context %p)\n", ret, gl_ctx);
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return ret;
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}
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/***********************************************************************
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* wglGetCurrentDC (OPENGL32.@)
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*/
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HDC WINAPI wglGetCurrentDC(void) {
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GLXContext gl_ctx;
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Wine_GLContext *ret;
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TRACE("()\n");
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ENTER_GL();
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gl_ctx = glXGetCurrentContext();
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ret = get_context_from_GLXContext(gl_ctx);
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LEAVE_GL();
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if (ret) {
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TRACE(" returning %08x (GL context %p - Wine context %p)\n", ret->hdc, gl_ctx, ret);
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return ret->hdc;
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} else {
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TRACE(" no Wine context found for GLX context %p\n", gl_ctx);
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return 0;
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}
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}
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/***********************************************************************
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* wglGetLayerPaletteEntries (OPENGL32.@)
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*/
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int WINAPI wglGetLayerPaletteEntries(HDC hdc,
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int iLayerPlane,
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int iStart,
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int cEntries,
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const COLORREF *pcr) {
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FIXME("(): stub !\n");
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return 0;
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}
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/***********************************************************************
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* wglGetProcAddress (OPENGL32.@)
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*/
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static int compar(const void *elt_a, const void *elt_b) {
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return strcmp(((OpenGL_extension *) elt_a)->name,
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((OpenGL_extension *) elt_b)->name);
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}
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void* WINAPI wglGetProcAddress(LPCSTR lpszProc) {
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void *local_func;
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static HMODULE hm = 0;
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OpenGL_extension ext;
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OpenGL_extension *ext_ret;
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TRACE("(%s)\n", lpszProc);
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if (hm == 0)
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hm = GetModuleHandleA("opengl32");
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/* First, look if it's not already defined in the 'standard' OpenGL functions */
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if ((local_func = GetProcAddress(hm, lpszProc)) != NULL) {
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TRACE(" found function in 'standard' OpenGL functions (%p)\n", local_func);
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return local_func;
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}
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/* After that, search in the thunks to find the real name of the extension */
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ext.name = (char *) lpszProc;
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ext_ret = (OpenGL_extension *) bsearch(&ext, extension_registry,
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extension_registry_size, sizeof(OpenGL_extension), compar);
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if (ext_ret == NULL) {
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/* Some sanity checks :-) */
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if (glXGetProcAddressARB(lpszProc) != NULL) {
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ERR("Extension %s defined in the OpenGL library but NOT in opengl_ext.c... Please report (lionel.ulmer@free.fr) !\n", lpszProc);
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return NULL;
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}
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WARN("Did not find extension %s in either Wine or your OpenGL library.\n", lpszProc);
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return NULL;
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} else {
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/* After that, look at the extensions defined in the Linux OpenGL library */
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if ((local_func = glXGetProcAddressARB(ext_ret->glx_name)) == NULL) {
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char buf[256];
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void *ret = NULL;
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/* Remove the 3 last letters (EXT, ARB, ...).
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I know that some extensions have more than 3 letters (MESA, NV,
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INTEL, ...), but this is only a stop-gap measure to fix buggy
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OpenGL drivers (moreover, it is only useful for old 1.0 apps
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that query the glBindTextureEXT extension).
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*/
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strncpy(buf, ext_ret->glx_name, strlen(ext_ret->glx_name) - 3);
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buf[strlen(ext_ret->glx_name) - 3] = '\0';
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TRACE(" extension not found in the Linux OpenGL library, checking against libGL bug with %s..\n", buf);
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ret = GetProcAddress(hm, buf);
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if (ret != NULL) {
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TRACE(" found function in main OpenGL library (%p) !\n", ret);
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} else {
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WARN("Did not find function %s (%s) in your OpenGL library !\n", lpszProc, ext_ret->glx_name);
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}
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return ret;
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} else {
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TRACE(" returning function (%p)\n", ext_ret->func);
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*(ext_ret->func_ptr) = local_func;
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return ext_ret->func;
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}
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}
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}
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/***********************************************************************
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* wglMakeCurrent (OPENGL32.@)
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*/
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BOOL WINAPI wglMakeCurrent(HDC hdc,
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HGLRC hglrc) {
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BOOL ret;
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TRACE("(%08x,%p)\n", hdc, hglrc);
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ENTER_GL();
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if (hglrc == NULL) {
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ret = glXMakeCurrent(default_display, None, NULL);
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} else {
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Wine_GLContext *ctx = (Wine_GLContext *) hglrc;
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Drawable drawable = get_drawable( hdc );
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if (ctx->ctx == NULL) {
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ctx->ctx = glXCreateContext(ctx->display, ctx->vis, NULL, True);
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TRACE(" created a delayed OpenGL context (%p)\n", ctx->ctx);
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}
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ret = glXMakeCurrent(ctx->display, drawable, ctx->ctx);
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}
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LEAVE_GL();
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TRACE(" returning %s\n", (ret ? "True" : "False"));
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return ret;
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}
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/***********************************************************************
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* wglRealizeLayerPalette (OPENGL32.@)
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*/
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BOOL WINAPI wglRealizeLayerPalette(HDC hdc,
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int iLayerPlane,
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BOOL bRealize) {
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FIXME("()\n");
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return FALSE;
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}
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/***********************************************************************
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* wglSetLayerPaletteEntries (OPENGL32.@)
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*/
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int WINAPI wglSetLayerPaletteEntries(HDC hdc,
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int iLayerPlane,
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int iStart,
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int cEntries,
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const COLORREF *pcr) {
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FIXME("(): stub !\n");
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return 0;
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}
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/***********************************************************************
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* wglShareLists (OPENGL32.@)
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*/
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BOOL WINAPI wglShareLists(HGLRC hglrc1,
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HGLRC hglrc2) {
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Wine_GLContext *org = (Wine_GLContext *) hglrc1;
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Wine_GLContext *dest = (Wine_GLContext *) hglrc2;
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TRACE("(%p, %p)\n", org, dest);
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if (dest->ctx != NULL) {
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ERR("Could not share display lists, context already created !\n");
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return FALSE;
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} else {
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if (org->ctx == NULL) {
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ENTER_GL();
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org->ctx = glXCreateContext(org->display, org->vis, NULL, True);
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LEAVE_GL();
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TRACE(" created a delayed OpenGL context (%p) for Wine context %p\n", org->ctx, org);
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}
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ENTER_GL();
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/* Create the destination context with display lists shared */
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dest->ctx = glXCreateContext(org->display, dest->vis, org->ctx, True);
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LEAVE_GL();
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TRACE(" created a delayed OpenGL context (%p) for Wine context %p sharing lists with OpenGL ctx %p\n", dest->ctx, dest, org->ctx);
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}
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return TRUE;
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}
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/***********************************************************************
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* wglSwapLayerBuffers (OPENGL32.@)
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*/
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BOOL WINAPI wglSwapLayerBuffers(HDC hdc,
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UINT fuPlanes) {
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FIXME("(): stub !\n");
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return FALSE;
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}
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/***********************************************************************
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* wglUseFontBitmapsA (OPENGL32.@)
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*/
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BOOL WINAPI wglUseFontBitmapsA(HDC hdc,
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DWORD first,
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DWORD count,
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DWORD listBase)
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{
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Font fid = get_font( hdc );
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TRACE("(%08x, %ld, %ld, %ld)\n", hdc, first, count, listBase);
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ENTER_GL();
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/* I assume that the glyphs are at the same position for X and for Windows */
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glXUseXFont(fid, first, count, listBase);
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LEAVE_GL();
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return TRUE;
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}
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/***********************************************************************
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* wglUseFontOutlinesA (OPENGL32.@)
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*/
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BOOL WINAPI wglUseFontOutlinesA(HDC hdc,
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DWORD first,
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DWORD count,
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DWORD listBase,
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FLOAT deviation,
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FLOAT extrusion,
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int format,
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LPGLYPHMETRICSFLOAT lpgmf) {
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FIXME("(): stub !\n");
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return FALSE;
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}
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/* This is for brain-dead applications that use OpenGL functions before even
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creating a rendering context.... */
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static BOOL process_attach(void)
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{
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XWindowAttributes win_attr;
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Visual *rootVisual;
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int num;
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XVisualInfo template;
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HDC hdc;
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XVisualInfo *vis = NULL;
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Window root = (Window)GetPropA( GetDesktopWindow(), "__wine_x11_whole_window" );
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if (!root)
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{
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ERR("X11DRV not loaded. Cannot create default context.\n");
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return FALSE;
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}
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hdc = GetDC(0);
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default_display = get_display( hdc );
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ReleaseDC( 0, hdc );
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if (!default_display)
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{
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ERR("X11DRV not loaded. Cannot get display for screen DC.\n");
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return FALSE;
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}
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ENTER_GL();
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/* Try to get the visual from the Root Window. We can't use the standard (presumably
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double buffered) X11DRV visual with the Root Window, since we don't know if the Root
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Window was created using the standard X11DRV visual, and glXMakeCurrent can't deal
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with mismatched visuals. Note that the Root Window visual may not be double
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buffered, so apps actually attempting to render this way may flicker */
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if (XGetWindowAttributes( default_display, root, &win_attr ))
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{
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rootVisual = win_attr.visual;
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}
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else
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{
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/* Get the default visual, since we can't seem to get the attributes from the
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Root Window. Let's hope that the Root Window Visual matches the DefaultVisual */
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rootVisual = DefaultVisual( default_display, DefaultScreen(default_display) );
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}
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template.visualid = XVisualIDFromVisual(rootVisual);
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vis = XGetVisualInfo(default_display, VisualIDMask, &template, &num);
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if (vis != NULL) default_cx = glXCreateContext(default_display, vis, 0, GL_TRUE);
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if (default_cx != NULL) glXMakeCurrent(default_display, root, default_cx);
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XFree(vis);
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LEAVE_GL();
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if (default_cx == NULL) {
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ERR("Could not create default context.\n");
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}
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return TRUE;
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}
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static void process_detach(void)
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{
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glXDestroyContext(default_display, default_cx);
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}
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|
/***********************************************************************
|
|
* OpenGL initialisation routine
|
|
*/
|
|
BOOL WINAPI OpenGL32_Init( HINSTANCE hinst, DWORD reason, LPVOID reserved )
|
|
{
|
|
switch(reason)
|
|
{
|
|
case DLL_PROCESS_ATTACH:
|
|
return process_attach();
|
|
case DLL_PROCESS_DETACH:
|
|
process_detach();
|
|
break;
|
|
}
|
|
return TRUE;
|
|
}
|