Mesa (gallium-mesa-7.4): st: fix crash when using accum_mad()

Alan Hourihane alanh at kemper.freedesktop.org
Tue May 12 11:40:02 UTC 2009


Module: Mesa
Branch: gallium-mesa-7.4
Commit: 699162286de9a6bf7bdae5f2fc9104fd5e8d8a34
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=699162286de9a6bf7bdae5f2fc9104fd5e8d8a34

Author: Alan Hourihane <alanh at vmware.com>
Date:   Tue May 12 12:40:53 2009 +0100

st: fix crash when using accum_mad()

---

 src/mesa/state_tracker/st_cb_accum.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/src/mesa/state_tracker/st_cb_accum.c b/src/mesa/state_tracker/st_cb_accum.c
index a4e72b4..1ddc628 100644
--- a/src/mesa/state_tracker/st_cb_accum.c
+++ b/src/mesa/state_tracker/st_cb_accum.c
@@ -160,7 +160,10 @@ accum_mad(GLcontext *ctx, GLfloat scale, GLfloat bias,
           struct st_renderbuffer *acc_strb)
 {
    struct pipe_screen *screen = ctx->st->pipe->screen;
-   struct pipe_surface *acc_ps = acc_strb->surface;
+//   struct pipe_surface *acc_ps = acc_strb->surface;
+   struct pipe_surface *acc_ps =  screen->get_tex_surface(screen, acc_strb->texture, 0, 0, 0,
+                                      (PIPE_BUFFER_USAGE_CPU_WRITE |
+                                       PIPE_BUFFER_USAGE_CPU_READ));
    GLubyte *map;
 
    map = screen->surface_map(screen, acc_ps, 




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