Mesa (master): llvmpipe: Use comments and more code from softpipe' s is_texture_referenced implementation.

[Jose Fonseca]

Module: Mesa
Branch: master
Commit: d01c7bef296f66bffe3ad167abb0c04c25f7fdae
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=d01c7bef296f66bffe3ad167abb0c04c25f7fdae

Author: José Fonseca <jfonseca at vmware.com>
Date:   Sat Dec 26 11:02:02 2009 +0000

llvmpipe: Use comments and more code from softpipe's is_texture_referenced implementation.

---

 src/gallium/drivers/llvmpipe/lp_context.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/src/gallium/drivers/llvmpipe/lp_context.c b/src/gallium/drivers/llvmpipe/lp_context.c
index 001311e..37587d4 100644
--- a/src/gallium/drivers/llvmpipe/lp_context.c
+++ b/src/gallium/drivers/llvmpipe/lp_context.c
@@ -140,6 +140,7 @@ llvmpipe_is_texture_referenced( struct pipe_context *pipe,
    struct llvmpipe_context *llvmpipe = llvmpipe_context( pipe );
    unsigned i;
 
+   /* check if any of the bound drawing surfaces are this texture */
    if(llvmpipe->dirty_render_cache) {
       for (i = 0; i < llvmpipe->framebuffer.nr_cbufs; i++) {
          if(llvmpipe->framebuffer.cbufs[i] && 
@@ -150,6 +151,13 @@ llvmpipe_is_texture_referenced( struct pipe_context *pipe,
          llvmpipe->framebuffer.zsbuf->texture == texture)
          return PIPE_REFERENCED_FOR_WRITE;
    }
+
+   /* check if any of the tex_cache textures are this texture */
+   for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
+      if (llvmpipe->tex_cache[i] &&
+            llvmpipe->tex_cache[i]->texture == texture)
+         return PIPE_REFERENCED_FOR_READ;
+   }
    for (i = 0; i < PIPE_MAX_VERTEX_SAMPLERS; i++) {
       if (llvmpipe->vertex_tex_cache[i] &&
           llvmpipe->vertex_tex_cache[i]->texture == texture)