From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Fri, 31 Mar 2000 17:07:10 +0000 (+0000)
Subject: mask/disable stencil/accum clears in fxDDClear()
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=aa51bb083bf392962a6828cdd6a8c804aa19bd42;p=mesa.git

mask/disable stencil/accum clears in fxDDClear()
---

diff --git a/src/mesa/drivers/glide/fxdd.c b/src/mesa/drivers/glide/fxdd.c
index 01e70951418..58310cfb33f 100644
--- a/src/mesa/drivers/glide/fxdd.c
+++ b/src/mesa/drivers/glide/fxdd.c
@@ -180,13 +180,16 @@ static GLbitfield fxDDClear(GLcontext *ctx, GLbitfield mask, GLboolean all,
   const FxU16 clearD = (FxU16) (ctx->Depth.Clear * 0xffff);
   GLbitfield softwareMask = mask & (DD_STENCIL_BIT | DD_ACCUM_BIT);
 
+  /* we can't clear stencil or accum buffers */
+  mask &= ~(DD_STENCIL_BIT | DD_ACCUM_BIT);
+
   if (MESA_VERBOSE & VERBOSE_DRIVER) {
     fprintf(stderr,"fxmesa: fxDDClear(%d,%d,%d,%d)\n", (int) x, (int) y,
             (int) width, (int) height);
   }
 
   if (colorMask != 0xffffffff) {
-    /* do color buffer clears in software */
+    /* do masked color buffer clears in software */
     softwareMask |= (mask & (DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT));
     mask &= ~(DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT);
   }