Mercurial > sdl-ios-xcode
view src/video/cybergfx/SDL_cgxgl.c @ 1303:52b5afd7ecee
Date: Tue, 05 Jul 2005 21:43:26 +1000
From: Sean Childs
Subject: [SDL] Compiling SDL 1.2.8 with the free Borland compiler
When compiling SDL 1.2.8 with the free Borland compiler, I received this
error (there is a similar error that occurs in
src\video\windx5\sdl_dx5events.c):
Error E2342 ..\..\src\video\windib\sdl_dibevents.c 189: Type mismatch in
parameter 'lpPrevWndFunc' (wanted 'int (__stdcall *)()', got 'long
(__stdcall *)(void *,unsigned int,unsigned int,long)') in function
DIB_HandleMessage
I checked the MSDN library at:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/winui/
windowsuserinterface/windowing/windowprocedures/windowprocedurereference/wind
owprocedurefunctions/callwindowproc.asp
and it had this to say:
If STRICT is not defined, the lpPrevWndFunc parameter has the data type
FARPROC. The FARPROC type is declared as follows:
int (FAR WINAPI * FARPROC) ()
In C, the FARPROC declaration indicates a callback function that has an
unspecified parameter list. In C++, however, the empty parameter list in
the declaration indicates that a function has no parameters. This subtle
distinction can break careless code. Following is one way to handle this
situation:
#ifdef STRICT
WNDPROC MyWindowProcedure
#else
FARPROC MyWindowProcedure
#endif
...
lResult = CallWindowProc(MyWindowProcedure, ...)
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Tue, 31 Jan 2006 15:30:42 +0000 |
parents | b8d311d90021 |
children | c9b51268668f |
line wrap: on
line source
/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2004 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Sam Lantinga slouken@libsdl.org */ #ifdef SAVE_RCSID static char rcsid = "@(#) $Id$"; #endif /* StormMesa implementation of SDL OpenGL support */ #include "SDL_error.h" #include "SDL_cgxgl_c.h" #include "SDL_cgxvideo.h" #ifdef HAVE_OPENGL AmigaMesaContext glcont=NULL; #endif /* Init OpenGL */ int CGX_GL_Init(_THIS) { #ifdef HAVE_OPENGL int i = 0; struct TagItem attributes [ 14 ]; /* 14 should be more than enough :) */ struct Window *win = (struct Window *)SDL_Window; // default config. Always used... attributes[i].ti_Tag = AMA_Window; attributes[i++].ti_Data = (unsigned long)win; attributes[i].ti_Tag = AMA_Left; attributes[i++].ti_Data = 0; attributes[i].ti_Tag = AMA_Bottom; attributes[i++].ti_Data = 0; attributes[i].ti_Tag = AMA_Width; attributes[i++].ti_Data = win->Width-win->BorderLeft-win->BorderRight; attributes[i].ti_Tag = AMA_Height; attributes[i++].ti_Data = win->Height-win->BorderBottom-win->BorderTop; attributes[i].ti_Tag = AMA_DirectRender; attributes[i++].ti_Data = GL_TRUE; // double buffer ? attributes[i].ti_Tag = AMA_DoubleBuf; if ( this->gl_config.double_buffer ) { attributes[i++].ti_Data = GL_TRUE; } else { attributes[i++].ti_Data = GL_FALSE; } // RGB(A) Mode ? attributes[i].ti_Tag = AMA_RGBMode; if ( this->gl_config.red_size != 0 && this->gl_config.blue_size != 0 && this->gl_config.green_size != 0 ) { attributes[i++].ti_Data = GL_TRUE; } else { attributes[i++].ti_Data = GL_FALSE; } // no depth buffer ? if ( this->gl_config.depth_size == 0 ) { attributes[i].ti_Tag = AMA_NoDepth; attributes[i++].ti_Data = GL_TRUE; } // no stencil buffer ? if ( this->gl_config.stencil_size == 0 ) { attributes[i].ti_Tag = AMA_NoStencil; attributes[i++].ti_Data = GL_TRUE; } // no accum buffer ? if ( this->gl_config.accum_red_size != 0 && this->gl_config.accum_blue_size != 0 && this->gl_config.accum_green_size != 0 ) { attributes[i].ti_Tag = AMA_NoAccum; attributes[i++].ti_Data = GL_TRUE; } // done... attributes[i].ti_Tag = TAG_DONE; glcont = AmigaMesaCreateContext(attributes); if ( glcont == NULL ) { SDL_SetError("Couldn't create OpenGL context"); return(-1); } this->gl_data->gl_active = 1; this->gl_config.driver_loaded = 1; return(0); #else SDL_SetError("OpenGL support not configured"); return(-1); #endif } /* Quit OpenGL */ void CGX_GL_Quit(_THIS) { #ifdef HAVE_OPENGL if ( glcont != NULL ) { AmigaMesaDestroyContext(glcont); glcont = NULL; this->gl_data->gl_active = 0; this->gl_config.driver_loaded = 0; } #endif } /* Attach context to another window */ int CGX_GL_Update(_THIS) { #ifdef HAVE_OPENGL struct TagItem tags[2]; struct Window *win = (struct Window*)SDL_Window; if(glcont == NULL) { return -1; //should never happen } tags[0].ti_Tag = AMA_Window; tags[0].ti_Data = (unsigned long)win; tags[1].ti_Tag = TAG_DONE; AmigaMesaSetRast(glcont, tags); return 0; #else SDL_SetError("OpenGL support not configured"); return -1; #endif } #ifdef HAVE_OPENGL /* Make the current context active */ int CGX_GL_MakeCurrent(_THIS) { if(glcont == NULL) return -1; AmigaMesaMakeCurrent(glcont, glcont->buffer); return 0; } void CGX_GL_SwapBuffers(_THIS) { AmigaMesaSwapBuffers(glcont); } int CGX_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value) { GLenum mesa_attrib; switch(attrib) { case SDL_GL_RED_SIZE: mesa_attrib = GL_RED_BITS; break; case SDL_GL_GREEN_SIZE: mesa_attrib = GL_GREEN_BITS; break; case SDL_GL_BLUE_SIZE: mesa_attrib = GL_BLUE_BITS; break; case SDL_GL_ALPHA_SIZE: mesa_attrib = GL_ALPHA_BITS; break; case SDL_GL_DOUBLEBUFFER: mesa_attrib = GL_DOUBLEBUFFER; break; case SDL_GL_DEPTH_SIZE: mesa_attrib = GL_DEPTH_BITS; break; case SDL_GL_STENCIL_SIZE: mesa_attrib = GL_STENCIL_BITS; break; case SDL_GL_ACCUM_RED_SIZE: mesa_attrib = GL_ACCUM_RED_BITS; break; case SDL_GL_ACCUM_GREEN_SIZE: mesa_attrib = GL_ACCUM_GREEN_BITS; break; case SDL_GL_ACCUM_BLUE_SIZE: mesa_attrib = GL_ACCUM_BLUE_BITS; break; case SDL_GL_ACCUM_ALPHA_SIZE: mesa_attrib = GL_ACCUM_ALPHA_BITS; break; default : return -1; } AmigaMesaGetConfig(glcont->visual, mesa_attrib, value); return 0; } void *CGX_GL_GetProcAddress(_THIS, const char *proc) { void *func = NULL; func = AmiGetGLProc(proc); return func; } int CGX_GL_LoadLibrary(_THIS, const char *path) { /* Library is always open */ this->gl_config.driver_loaded = 1; return 0; } #endif /* HAVE_OPENGL */