gallium: add condition parameter to render_condition

For conditional rendering this makes it possible to skip rendering
if either the predicate is true or false, as supported by d3d10
(in fact previously it was sort of implied skip rendering if predicate
is false for occlusion predicate, and true for so_overflow predicate).
There's no cap bit for this as presumably all drivers could do it trivially
(but this patch does not implement it for the drivers using true
hw predicates, nvxx, r600, radeonsi, no change is expected for OpenGL
functionality).

Reviewed-by: Jose Fonseca <[email protected]>

1 files changed, 4 insertions, 3 deletions

diff --git a/src/gallium/drivers/r300/r300_query.c b/src/gallium/drivers/r300/r300_query.c
index e338c57ed80..fbf44c68419 100644
--- a/src/gallium/drivers/r300/r300_query.c
+++ b/src/gallium/drivers/r300/r300_query.c
@@ -178,6 +178,7 @@ static boolean r300_get_query_result(struct pipe_context* pipe,
 
 static void r300_render_condition(struct pipe_context *pipe,
                                   struct pipe_query *query,
+                                  boolean condition,
                                   uint mode)
 {
     struct r300_context *r300 = r300_context(pipe);
@@ -192,10 +193,10 @@ static void r300_render_condition(struct pipe_context *pipe,
 
         if (r300_get_query_result(pipe, query, wait, &result)) {
             if (r300_query(query)->type == PIPE_QUERY_OCCLUSION_PREDICATE) {
-                r300->skip_rendering = !result.b;
+                r300->skip_rendering = condition == result.b;
             } else {
-                r300->skip_rendering = !result.u64;
-	    }
+                r300->skip_rendering = condition == !!result.u64;
+            }
         }
     }
 }