set haveHwStencil flag only if running on Voodoo4/5 at 32bpp

1 files changed, 8 insertions, 5 deletions

diff --git a/xc/lib/GL/mesa/src/drv/tdfx/tdfx_xmesa.c b/xc/lib/GL/mesa/src/drv/tdfx/tdfx_xmesa.c
index 44d2a3208..a3973a8ab 100644
--- a/xc/lib/GL/mesa/src/drv/tdfx/tdfx_xmesa.c
+++ b/xc/lib/GL/mesa/src/drv/tdfx/tdfx_xmesa.c
@@ -178,15 +178,18 @@ XMesaContext XMesaCreateContext(XMesaVisual v, XMesaContext share_list,
 
   cPriv->hHWContext = driContextPriv->hHWContext;
   cPriv->tdfxScrnPriv = sPriv;
+  /* deviceID = 0x05 = Voodoo3 */
+  /* deviceID = 0x09 = Voodoo5 (and Voodoo5?) */
+  cPriv->haveHwStencil = sPriv->deviceID == 0x9 && sPriv->cpp == 4;
   c->private = (void *)cPriv;
 
   cPriv->glVis=v->gl_visual;
   cPriv->glBuffer=gl_create_framebuffer(v->gl_visual,
-                                        GL_FALSE,  /* software depth buffer? */
-                                        v->gl_visual->StencilBits > 0 && v->gl_visual->RedBits < 8,
-                                        v->gl_visual->AccumRedBits > 0,
-                                        GL_FALSE   /* software alpha channel */
-                                        );
+                        GL_FALSE,  /* software depth buffer? */
+                        v->gl_visual->StencilBits > 0 && !cPriv->haveHwStencil,
+                        v->gl_visual->AccumRedBits > 0,
+                        GL_FALSE   /* software alpha channel */
+                      );
 
   cPriv->screen_width=sPriv->width;
   cPriv->screen_height=sPriv->height;