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authorKarl Schultz <kschultz@freedesktop.org>2002-04-23 18:23:32 +0000
committerKarl Schultz <kschultz@freedesktop.org>2002-04-23 18:23:32 +0000
commite694a8765a2406838354e39d5c40dab5fbb744e9 (patch)
tree72bd71093ffb3255b9a2581056a324bbebca18aa /include/GL/wmesa.h
parent62c36a2ff39d775c1f1bc377b9ddbc69e2340799 (diff)
Fix up alpha buffer handling for Windows.
- add two new Pixel Format Descriptors that do not have alpha bits to mirror the two that do. - add logic to wglChoosePixelFormat to match PFD's with respect to alpha. - Create/clear software alpha buffer as required. Now a wgl or GLUT program can control the creation of a software alpha buffer via the PFD or GLUT parms, respectively.
Diffstat (limited to 'include/GL/wmesa.h')
-rw-r--r--include/GL/wmesa.h21
1 files changed, 17 insertions, 4 deletions
diff --git a/include/GL/wmesa.h b/include/GL/wmesa.h
index 94b61974c3..67ca17f7a4 100644
--- a/include/GL/wmesa.h
+++ b/include/GL/wmesa.h
@@ -1,4 +1,4 @@
-/* $Id: wmesa.h,v 1.1 1999/08/19 00:55:40 jtg Exp $ */
+/* $Id: wmesa.h,v 1.2 2002/04/23 18:23:32 kschultz Exp $ */
/*
* Mesa 3-D graphics library
@@ -24,8 +24,17 @@
/*
* $Log: wmesa.h,v $
- * Revision 1.1 1999/08/19 00:55:40 jtg
- * Initial revision
+ * Revision 1.2 2002/04/23 18:23:32 kschultz
+ * Fix up alpha buffer handling for Windows.
+ * - add two new Pixel Format Descriptors that do not have alpha bits to
+ * mirror the two that do.
+ * - add logic to wglChoosePixelFormat to match PFD's with respect to alpha.
+ * - Create/clear software alpha buffer as required.
+ * Now a wgl or GLUT program can control the creation of a software alpha
+ * buffer via the PFD or GLUT parms, respectively.
+ *
+ * Revision 1.1.1.1 1999/08/19 00:55:40 jtg
+ * Imported sources
*
* Revision 3.2 1999/01/03 02:54:45 brianp
* updated per Ted Jump
@@ -101,13 +110,17 @@ typedef struct wmesa_context *WMesaContext;
* GL_FALSE = color index mode
* db_flag - GL_TRUE = double-buffered,
* GL_FALSE = single buffered
+ * alpha_flag - GL_TRUE = create software alpha buffer,
+ * GL_FALSE = no software alpha buffer
*
* Note: Indexed mode requires double buffering under Windows.
*
* Return: a WMesa_context or NULL if error.
*/
extern WMesaContext WMesaCreateContext(HWND hWnd,HPALETTE* pPal,
- GLboolean rgb_flag,GLboolean db_flag);
+ GLboolean rgb_flag,
+ GLboolean db_flag,
+ GLboolean alpha_flag);
/*