r600g: always clear query memory

According to the hw documentation, the driver needs to:
- allocate 128 bits for each possible DB
- clear the 128 bits for each possible DB
- write 1 to bits 127 and 63 for upper DBs that don't
exist on a particular asic

Previously we were only doing these steps if the
asic had less than the max possible DBs.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>

diff --git a/src/gallium/winsys/r600/drm/r600_hw_context.c b/src/gallium/winsys/r600/drm/r600_hw_context.c
index cb244f2..2159d41 100644 (file)
--- a/src/gallium/winsys/r600/drm/r600_hw_context.c
+++ b/src/gallium/winsys/r600/drm/r600_hw_context.c
@@ -1667,7 +1667,7 @@ void r600_query_begin(struct r600_context *ctx, struct r600_query *query)
        }
 
        if (query->type == PIPE_QUERY_OCCLUSION_COUNTER &&
-           num_backends > 0 && num_backends < ctx->max_db) {
+           num_backends > 0) {
                /* as per info on ZPASS the driver must set the unusued DB top bits */
                u32 *results;
                int i;
@@ -1675,7 +1675,7 @@ void r600_query_begin(struct r600_context *ctx, struct r600_query *query)
                results = r600_bo_map(ctx->radeon, query->buffer, PB_USAGE_DONTBLOCK | PB_USAGE_CPU_WRITE, NULL);
                if (results) {
                        memset(results + (query->num_results * 4), 0, ctx->max_db * 4 * 4);
-                       
+
                        for (i = num_backends; i < ctx->max_db; i++) {
                                results[(i * 4)+1] = 0x80000000;
                                results[(i * 4)+3] = 0x80000000;
@@ -1683,7 +1683,7 @@ void r600_query_begin(struct r600_context *ctx, struct r600_query *query)
                        r600_bo_unmap(ctx->radeon, query->buffer);
                }
        }
-       
+
        /* emit begin query */
        if (query->type == PIPE_QUERY_TIME_ELAPSED) {
                ctx->pm4[ctx->pm4_cdwords++] = PKT3(PKT3_EVENT_WRITE_EOP, 4, 0);