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diff src/video/wincommon/SDL_wingl_c.h @ 655:9c42ee1b7d77

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Date: Thu, 24 Apr 2003 15:13:47 -0400 From: Shawn Kirst Subject: SDL-1.2.5 patch to add ARB_multisample support Attached is a patch I have written for SDL-1.2.5 that adds ARB_multisample support. I only have the X11 and Win32 video patched. The Win32 patch also adds support for WGL_ARB_pixel_format, as it was required for getting a multisample capable pixel format. No additional GL header files are required to compile on either platform (though you need an up-to-date glx.h for X11). Requesting a multisample pixel format is made possible using SDL_GL_SetAttribute with the two new SDL_GLattr's I've added (SDL_GL_SAMPLE_BUFFERS and SDL_GL_SAMPLES). I've been using SDL in my projects for quite a while now, so I am happy to contribute back to the project. Now you can have and control FSAA in your SDL/GL apps at the application level!
author Sam Lantinga <slouken@libsdl.org>
date Tue, 22 Jul 2003 15:10:06 +0000
parents f6ffac90895c
children b8d311d90021
line wrap: on
line diff
--- a/src/video/wincommon/SDL_wingl_c.h	Tue Jul 22 14:01:21 2003 +0000
+++ b/src/video/wincommon/SDL_wingl_c.h	Tue Jul 22 15:10:06 2003 +0000
@@ -37,6 +37,8 @@
     PIXELFORMATDESCRIPTOR GL_pfd;
     HDC GL_hdc;
     HGLRC GL_hrc;
+    int pixel_format;
+    int wgl_arb_pixel_format;
 
     void * (WINAPI *wglGetProcAddress)(const char *proc);
 
@@ -45,7 +47,16 @@
     BOOL (WINAPI *wglDeleteContext)(HGLRC hglrc);
 
     BOOL (WINAPI *wglMakeCurrent)(HDC hdc, HGLRC hglrc);
-
+   
+    BOOL (WINAPI *wglChoosePixelFormatARB)(HDC hdc, const int *piAttribIList,
+                                           const FLOAT *pfAttribFList,
+                                           UINT nMaxFormats, int *piFormats,
+                                           UINT *nNumFormats);
+    BOOL (WINAPI *wglGetPixelFormatAttribivARB)(HDC hdc, int iPixelFormat,
+                                                int iLayerPlane,
+                                                UINT nAttributes, 
+                                                const int *piAttributes,
+                                                int *piValues);
 #endif /* HAVE_OPENGL */
 };
 
@@ -54,6 +65,7 @@
 #define GL_pfd		(this->gl_data->GL_pfd)
 #define GL_hdc		(this->gl_data->GL_hdc)
 #define GL_hrc		(this->gl_data->GL_hrc)
+#define pixel_format	(this->gl_data->pixel_format)
 
 /* OpenGL functions */
 extern int WIN_GL_SetupWindow(_THIS);
@@ -67,3 +79,63 @@
 extern void *WIN_GL_GetProcAddress(_THIS, const char* proc);
 #endif
 
+#ifdef HAVE_OPENGL
+
+#ifndef WGL_ARB_pixel_format
+#define WGL_NUMBER_PIXEL_FORMATS_ARB   0x2000
+#define WGL_DRAW_TO_WINDOW_ARB         0x2001
+#define WGL_DRAW_TO_BITMAP_ARB         0x2002
+#define WGL_ACCELERATION_ARB           0x2003
+#define WGL_NEED_PALETTE_ARB           0x2004
+#define WGL_NEED_SYSTEM_PALETTE_ARB    0x2005
+#define WGL_SWAP_LAYER_BUFFERS_ARB     0x2006
+#define WGL_SWAP_METHOD_ARB            0x2007
+#define WGL_NUMBER_OVERLAYS_ARB        0x2008
+#define WGL_NUMBER_UNDERLAYS_ARB       0x2009
+#define WGL_TRANSPARENT_ARB            0x200A
+#define WGL_TRANSPARENT_RED_VALUE_ARB  0x2037
+#define WGL_TRANSPARENT_GREEN_VALUE_ARB 0x2038
+#define WGL_TRANSPARENT_BLUE_VALUE_ARB 0x2039
+#define WGL_TRANSPARENT_ALPHA_VALUE_ARB 0x203A
+#define WGL_TRANSPARENT_INDEX_VALUE_ARB 0x203B
+#define WGL_SHARE_DEPTH_ARB            0x200C
+#define WGL_SHARE_STENCIL_ARB          0x200D
+#define WGL_SHARE_ACCUM_ARB            0x200E
+#define WGL_SUPPORT_GDI_ARB            0x200F
+#define WGL_SUPPORT_OPENGL_ARB         0x2010
+#define WGL_DOUBLE_BUFFER_ARB          0x2011
+#define WGL_STEREO_ARB                 0x2012
+#define WGL_PIXEL_TYPE_ARB             0x2013
+#define WGL_COLOR_BITS_ARB             0x2014
+#define WGL_RED_BITS_ARB               0x2015
+#define WGL_RED_SHIFT_ARB              0x2016
+#define WGL_GREEN_BITS_ARB             0x2017
+#define WGL_GREEN_SHIFT_ARB            0x2018
+#define WGL_BLUE_BITS_ARB              0x2019
+#define WGL_BLUE_SHIFT_ARB             0x201A
+#define WGL_ALPHA_BITS_ARB             0x201B
+#define WGL_ALPHA_SHIFT_ARB            0x201C
+#define WGL_ACCUM_BITS_ARB             0x201D
+#define WGL_ACCUM_RED_BITS_ARB         0x201E
+#define WGL_ACCUM_GREEN_BITS_ARB       0x201F
+#define WGL_ACCUM_BLUE_BITS_ARB        0x2020
+#define WGL_ACCUM_ALPHA_BITS_ARB       0x2021
+#define WGL_DEPTH_BITS_ARB             0x2022
+#define WGL_STENCIL_BITS_ARB           0x2023
+#define WGL_AUX_BUFFERS_ARB            0x2024
+#define WGL_NO_ACCELERATION_ARB        0x2025
+#define WGL_GENERIC_ACCELERATION_ARB   0x2026
+#define WGL_FULL_ACCELERATION_ARB      0x2027
+#define WGL_SWAP_EXCHANGE_ARB          0x2028
+#define WGL_SWAP_COPY_ARB              0x2029
+#define WGL_SWAP_UNDEFINED_ARB         0x202A
+#define WGL_TYPE_RGBA_ARB              0x202B
+#define WGL_TYPE_COLORINDEX_ARB        0x202C
+#endif
+
+#ifndef WGL_ARB_multisample
+#define WGL_SAMPLE_BUFFERS_ARB         0x2041
+#define WGL_SAMPLES_ARB                0x2042
+#endif
+
+#endif