i965: Fix occlusion query on sandybridge

[mesa.git] / src / mesa / drivers / dri / i965 / brw_queryobj.c

diff --git a/src/mesa/drivers/dri/i965/brw_queryobj.c b/src/mesa/drivers/dri/i965/brw_queryobj.c
index 1b183735d756a9d19d7be8475baf4cf9ce461199..656aad630a19024d84ef99a4b5197b986c6ea683 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_queryobj.c
+++ b/src/mesa/drivers/dri/i965/brw_queryobj.c
@@ -72,7 +72,7 @@ brw_queryobj_get_results(struct brw_query_object *query)
 }
 
 static struct gl_query_object *
-brw_new_query_object(GLcontext *ctx, GLuint id)
+brw_new_query_object(struct gl_context *ctx, GLuint id)
 {
    struct brw_query_object *query;
 
@@ -87,7 +87,7 @@ brw_new_query_object(GLcontext *ctx, GLuint id)
 }
 
 static void
-brw_delete_query(GLcontext *ctx, struct gl_query_object *q)
+brw_delete_query(struct gl_context *ctx, struct gl_query_object *q)
 {
    struct brw_query_object *query = (struct brw_query_object *)q;
 
@@ -96,7 +96,7 @@ brw_delete_query(GLcontext *ctx, struct gl_query_object *q)
 }
 
 static void
-brw_begin_query(GLcontext *ctx, struct gl_query_object *q)
+brw_begin_query(struct gl_context *ctx, struct gl_query_object *q)
 {
    struct brw_context *brw = brw_context(ctx);
    struct intel_context *intel = intel_context(ctx);
@@ -146,7 +146,7 @@ brw_begin_query(GLcontext *ctx, struct gl_query_object *q)
  * Begin the ARB_occlusion_query query on a query object.
  */
 static void
-brw_end_query(GLcontext *ctx, struct gl_query_object *q)
+brw_end_query(struct gl_context *ctx, struct gl_query_object *q)
 {
    struct brw_context *brw = brw_context(ctx);
    struct intel_context *intel = intel_context(ctx);
@@ -197,7 +197,7 @@ brw_end_query(GLcontext *ctx, struct gl_query_object *q)
    }
 }
 
-static void brw_wait_query(GLcontext *ctx, struct gl_query_object *q)
+static void brw_wait_query(struct gl_context *ctx, struct gl_query_object *q)
 {
    struct brw_query_object *query = (struct brw_query_object *)q;
 
@@ -205,7 +205,7 @@ static void brw_wait_query(GLcontext *ctx, struct gl_query_object *q)
    query->Base.Ready = GL_TRUE;
 }
 
-static void brw_check_query(GLcontext *ctx, struct gl_query_object *q)
+static void brw_check_query(struct gl_context *ctx, struct gl_query_object *q)
 {
    struct brw_query_object *query = (struct brw_query_object *)q;
 
@@ -232,6 +232,12 @@ brw_prepare_query_begin(struct brw_context *brw)
       brw->query.bo = NULL;
 
       brw->query.bo = drm_intel_bo_alloc(intel->bufmgr, "query", 4096, 1);
+
+      /* clear target buffer */
+      drm_intel_bo_map(brw->query.bo, GL_TRUE);
+      memset((char *)brw->query.bo->virtual, 0, 4096);
+      drm_intel_bo_unmap(brw->query.bo);
+
       brw->query.index = 0;
    }