From: Luca Barbieri <luca@luca-barbieri.com>
Date: Tue, 23 Mar 2010 16:40:42 +0000 (+0100)
Subject: st/mesa: make st_manager.c set have[Stencil|Depth]Buffer only if bits > 0
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=9f0e302cc792f21c6523a85c353e053f942cd035;p=mesa.git

st/mesa: make st_manager.c set have[Stencil|Depth]Buffer only if bits > 0

Fixes a segfault when clearing a non-existent stencil buffer.
---

diff --git a/src/mesa/state_tracker/st_manager.c b/src/mesa/state_tracker/st_manager.c
index ca3a29cb2b8..cac62e4a14c 100644
--- a/src/mesa/state_tracker/st_manager.c
+++ b/src/mesa/state_tracker/st_manager.c
@@ -333,15 +333,15 @@ st_visual_to_context_mode(const struct st_visual *visual,
    }
 
    if (visual->depth_stencil_format != PIPE_FORMAT_NONE) {
-      mode->haveDepthBuffer = GL_TRUE;
-      mode->haveStencilBuffer = GL_TRUE;
-
       mode->depthBits =
          util_format_get_component_bits(visual->depth_stencil_format,
                UTIL_FORMAT_COLORSPACE_ZS, 0);
       mode->stencilBits =
          util_format_get_component_bits(visual->depth_stencil_format,
                UTIL_FORMAT_COLORSPACE_ZS, 1);
+
+      mode->haveDepthBuffer = mode->depthBits > 0;
+      mode->haveStencilBuffer = mode->stencilBits > 0;
    }
 
    if (visual->accum_format != PIPE_FORMAT_NONE) {