391 lines
11 KiB
C
391 lines
11 KiB
C
/*
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* OpenGL function forwarding to the display driver
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*
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* Copyright (c) 1999 Lionel Ulmer
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* Copyright (c) 2005 Raphael Junqueira
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* Copyright (c) 2006 Roderick Colenbrander
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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <stdarg.h>
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#include <string.h>
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#include <stdlib.h>
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#include "windef.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "winerror.h"
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#include "winternl.h"
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#include "winnt.h"
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#include "gdi_private.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(wgl);
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static HDC default_hdc = 0;
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typedef struct opengl_context
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{
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HDC hdc;
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} *OPENGL_Context;
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/* We route all wgl functions from opengl32.dll through gdi32.dll to
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* the display driver. Various wgl calls have a hDC as one of their parameters.
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* Using get_dc_ptr we get access to the functions exported by the driver.
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* Some functions don't receive a hDC. This function creates a global hdc and
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* if there's already a global hdc, it returns it.
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*/
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static DC* OPENGL_GetDefaultDC(void)
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{
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if(!default_hdc)
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default_hdc = CreateDCA("DISPLAY", NULL, NULL, NULL);
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return get_dc_ptr(default_hdc);
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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, HGLRC hglrcDst, UINT mask)
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{
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DC *dc;
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BOOL ret = FALSE;
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OPENGL_Context ctx = (OPENGL_Context)hglrcSrc;
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TRACE("hglrcSrc: (%p), hglrcDst: (%p), mask: %#x\n", hglrcSrc, hglrcDst, mask);
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/* If no context is set, this call doesn't have a purpose */
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if(!hglrcSrc || !hglrcDst)
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return FALSE;
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/* Retrieve the HDC associated with the context to access the display driver */
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dc = get_dc_ptr(ctx->hdc);
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if (!dc) return FALSE;
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if (!dc->funcs->pwglCopyContext) FIXME(" :stub\n");
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else ret = dc->funcs->pwglCopyContext(hglrcSrc, hglrcDst, mask);
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release_dc_ptr( dc );
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return ret;
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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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HGLRC ret = 0;
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DC * dc = get_dc_ptr( hdc );
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TRACE("(%p)\n",hdc);
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if (!dc) return 0;
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update_dc( dc );
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if (!dc->funcs->pwglCreateContext) FIXME(" :stub\n");
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else ret = dc->funcs->pwglCreateContext(dc->physDev);
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release_dc_ptr( dc );
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return ret;
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}
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/***********************************************************************
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* wglCreateContextAttribsARB
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*/
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HGLRC WINAPI wglCreateContextAttribsARB(HDC hdc, HGLRC hShareContext, const int *attributeList)
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{
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HGLRC ret = 0;
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DC * dc = get_dc_ptr( hdc );
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TRACE("(%p)\n",hdc);
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if (!dc) return 0;
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update_dc( dc );
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if (!dc->funcs->pwglCreateContextAttribsARB) FIXME(" :stub\n");
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else ret = dc->funcs->pwglCreateContextAttribsARB(dc->physDev, hShareContext, attributeList);
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release_dc_ptr( dc );
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return ret;
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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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DC *dc;
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BOOL ret = FALSE;
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OPENGL_Context ctx = (OPENGL_Context)hglrc;
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TRACE("hglrc: (%p)\n", hglrc);
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if(ctx == NULL)
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return FALSE;
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/* Retrieve the HDC associated with the context to access the display driver */
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dc = get_dc_ptr(ctx->hdc);
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if (!dc) return FALSE;
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if (!dc->funcs->pwglDeleteContext) FIXME(" :stub\n");
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else ret = dc->funcs->pwglDeleteContext(hglrc);
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release_dc_ptr( dc );
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return ret;
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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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{
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HGLRC ret = NtCurrentTeb()->glContext;
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TRACE(" returning %p\n", ret);
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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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{
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OPENGL_Context ctx = (OPENGL_Context)wglGetCurrentContext();
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TRACE(" found context: %p\n", ctx);
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if(ctx == NULL)
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return NULL;
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/* Retrieve the current DC from the active context */
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TRACE(" returning hdc: %p\n", ctx->hdc);
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return ctx->hdc;
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}
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/***********************************************************************
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* wglGetPbufferDCARB
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*/
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static HDC WINAPI wglGetPbufferDCARB(void *pbuffer)
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{
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HDC ret = 0;
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/* Create a device context to associate with the pbuffer */
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HDC hdc = CreateDCA("DISPLAY", NULL, NULL, NULL);
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DC *dc = get_dc_ptr(hdc);
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TRACE("(%p)\n", pbuffer);
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if (!dc) return 0;
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/* The display driver has to do the rest of the work because
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* we need access to lowlevel datatypes which we can't access here
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*/
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if (!dc->funcs->pwglGetPbufferDCARB) FIXME(" :stub\n");
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else ret = dc->funcs->pwglGetPbufferDCARB(dc->physDev, pbuffer);
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TRACE("(%p), hdc=%p\n", pbuffer, ret);
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release_dc_ptr( dc );
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return ret;
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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, HGLRC hglrc)
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{
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BOOL ret = FALSE;
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DC * dc = NULL;
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/* When the context hglrc is NULL, the HDC is ignored and can be NULL.
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* In that case use the global hDC to get access to the driver. */
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if(hglrc == NULL)
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{
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if( hdc == NULL && !wglGetCurrentContext() )
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{
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WARN( "Current context is NULL\n");
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SetLastError( ERROR_INVALID_HANDLE );
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return FALSE;
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}
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dc = OPENGL_GetDefaultDC();
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}
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else
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dc = get_dc_ptr( hdc );
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TRACE("hdc: (%p), hglrc: (%p)\n", hdc, hglrc);
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if (!dc) return FALSE;
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update_dc( dc );
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if (!dc->funcs->pwglMakeCurrent) FIXME(" :stub\n");
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else ret = dc->funcs->pwglMakeCurrent(dc->physDev,hglrc);
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release_dc_ptr( dc );
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return ret;
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}
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/***********************************************************************
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* wglMakeContextCurrentARB
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*/
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static BOOL WINAPI wglMakeContextCurrentARB(HDC hDrawDC, HDC hReadDC, HGLRC hglrc)
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{
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BOOL ret = FALSE;
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DC *DrawDC;
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DC *ReadDC;
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TRACE("hDrawDC: (%p), hReadDC: (%p) hglrc: (%p)\n", hDrawDC, hReadDC, hglrc);
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/* Both hDrawDC and hReadDC need to be valid */
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DrawDC = get_dc_ptr( hDrawDC );
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if (!DrawDC) return FALSE;
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ReadDC = get_dc_ptr( hReadDC );
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if (!ReadDC) {
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release_dc_ptr( DrawDC );
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return FALSE;
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}
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update_dc( DrawDC );
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update_dc( ReadDC );
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if (!DrawDC->funcs->pwglMakeContextCurrentARB) FIXME(" :stub\n");
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else ret = DrawDC->funcs->pwglMakeContextCurrentARB(DrawDC->physDev, ReadDC->physDev, hglrc);
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release_dc_ptr( DrawDC );
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release_dc_ptr( ReadDC );
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return ret;
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}
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/**************************************************************************************
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* WINE-specific wglSetPixelFormat which can set the iPixelFormat multiple times
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*
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*/
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static BOOL WINAPI wglSetPixelFormatWINE(HDC hdc, int iPixelFormat, const PIXELFORMATDESCRIPTOR *ppfd)
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{
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INT bRet = FALSE;
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DC * dc = get_dc_ptr( hdc );
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TRACE("(%p,%d,%p)\n", hdc, iPixelFormat, ppfd);
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if (!dc) return 0;
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update_dc( dc );
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if (!dc->funcs->pwglSetPixelFormatWINE) FIXME(" :stub\n");
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else bRet = dc->funcs->pwglSetPixelFormatWINE(dc->physDev, iPixelFormat, ppfd);
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release_dc_ptr( dc );
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return bRet;
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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, HGLRC hglrc2)
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{
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DC *dc;
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BOOL ret = FALSE;
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OPENGL_Context ctx = (OPENGL_Context)hglrc1;
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TRACE("hglrc1: (%p); hglrc: (%p)\n", hglrc1, hglrc2);
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if(ctx == NULL || hglrc2 == NULL)
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return FALSE;
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/* Retrieve the HDC associated with the context to access the display driver */
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dc = get_dc_ptr(ctx->hdc);
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if (!dc) return FALSE;
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if (!dc->funcs->pwglShareLists) FIXME(" :stub\n");
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else ret = dc->funcs->pwglShareLists(hglrc1, hglrc2);
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release_dc_ptr( dc );
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return ret;
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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, DWORD first, DWORD count, DWORD listBase)
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{
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BOOL ret = FALSE;
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DC * dc = get_dc_ptr( hdc );
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TRACE("(%p, %d, %d, %d)\n", hdc, first, count, listBase);
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if (!dc) return FALSE;
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if (!dc->funcs->pwglUseFontBitmapsA) FIXME(" :stub\n");
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else ret = dc->funcs->pwglUseFontBitmapsA(dc->physDev, first, count, listBase);
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release_dc_ptr( dc );
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return ret;
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}
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/***********************************************************************
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* wglUseFontBitmapsW (OPENGL32.@)
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*/
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BOOL WINAPI wglUseFontBitmapsW(HDC hdc, DWORD first, DWORD count, DWORD listBase)
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{
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BOOL ret = FALSE;
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DC * dc = get_dc_ptr( hdc );
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TRACE("(%p, %d, %d, %d)\n", hdc, first, count, listBase);
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if (!dc) return FALSE;
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if (!dc->funcs->pwglUseFontBitmapsW) FIXME(" :stub\n");
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else ret = dc->funcs->pwglUseFontBitmapsW(dc->physDev, first, count, listBase);
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release_dc_ptr( dc );
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return ret;
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}
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/***********************************************************************
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* Internal wglGetProcAddress for retrieving WGL extensions
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*/
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PROC WINAPI wglGetProcAddress(LPCSTR func)
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{
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PROC ret = NULL;
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DC *dc;
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if(!func)
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return NULL;
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TRACE("func: '%s'\n", func);
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/* Retrieve the global hDC to get access to the driver. */
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dc = OPENGL_GetDefaultDC();
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if (!dc) return NULL;
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if (!dc->funcs->pwglGetProcAddress) FIXME(" :stub\n");
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else ret = dc->funcs->pwglGetProcAddress(func);
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release_dc_ptr( dc );
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/* At the moment we implement one WGL extension which requires a HDC. When we
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* are looking up this call and when the Extension is available (that is the case
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* when a non-NULL value is returned by wglGetProcAddress), we return the address
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* of a wrapper function which will handle the HDC->PhysDev conversion.
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*/
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if(ret && strcmp(func, "wglCreateContextAttribsARB") == 0)
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return (PROC)wglCreateContextAttribsARB;
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else if(ret && strcmp(func, "wglMakeContextCurrentARB") == 0)
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return (PROC)wglMakeContextCurrentARB;
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else if(ret && strcmp(func, "wglGetPbufferDCARB") == 0)
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return (PROC)wglGetPbufferDCARB;
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else if(ret && strcmp(func, "wglSetPixelFormatWINE") == 0)
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return (PROC)wglSetPixelFormatWINE;
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return ret;
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}
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