llvmpipe: fix pipeline statistics with a null ps

If the fragment shader is null then pixel shader invocations have
to be equal to zero. And if we're running a null ps then clipper
invocations and primitives should be equal to zero but only
if both stancil and depth testing are disabled.

Signed-off-by: Zack Rusin <zackr@vmware.com>
Reviewed-by: Roland Scheidegger <sroland@vmware.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_rast_priv.h b/src/gallium/drivers/llvmpipe/lp_rast_priv.h
index b8bc99c..41fe097 100644
--- a/src/gallium/drivers/llvmpipe/lp_rast_priv.h
+++ b/src/gallium/drivers/llvmpipe/lp_rast_priv.h
@@ -100,6 +100,7 @@ struct lp_rasterizer_task
    /* occlude counter for visible pixels */
    struct lp_jit_thread_data thread_data;
    uint64_t ps_invocations;
+   uint8_t ps_inv_multiplier;
 
    pipe_semaphore work_ready;
    pipe_semaphore work_done;
@@ -308,7 +309,7 @@ lp_rast_shade_quads_all( struct lp_rasterizer_task *task,
    if ((x % TILE_SIZE) < task->width && (y % TILE_SIZE) < task->height) {
       /* not very accurate would need a popcount on the mask */
       /* always count this not worth bothering? */
-      task->ps_invocations++;
+      task->ps_invocations += 1 * variant->ps_inv_multiplier;
 
       /* run shader on 4x4 block */
       BEGIN_JIT_CALL(state, task);