Mesa (master): freedreno/a3xx: handle index_bias (i.e. base_vertex)
Ilia Mirkin
imirkin at kemper.freedesktop.org
Sat Dec 6 23:26:37 UTC 2014
Module: Mesa
Branch: master
Commit: c416f49ebe69436e4fd96f738249be8f8d511447
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=c416f49ebe69436e4fd96f738249be8f8d511447
Author: Ilia Mirkin <imirkin at alum.mit.edu>
Date: Thu Dec 4 00:45:45 2014 -0500
freedreno/a3xx: handle index_bias (i.e. base_vertex)
Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
Reviewed-by: Rob Clark <robclark at freedesktop.org>
---
src/gallium/drivers/freedreno/a3xx/fd3_draw.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/src/gallium/drivers/freedreno/a3xx/fd3_draw.c b/src/gallium/drivers/freedreno/a3xx/fd3_draw.c
index b06d425..cf704ba 100644
--- a/src/gallium/drivers/freedreno/a3xx/fd3_draw.c
+++ b/src/gallium/drivers/freedreno/a3xx/fd3_draw.c
@@ -42,6 +42,16 @@
#include "fd3_format.h"
#include "fd3_zsa.h"
+static inline uint32_t
+add_sat(uint32_t a, int32_t b)
+{
+ int64_t ret = (uint64_t)a + (int64_t)b;
+ if (ret > ~0U)
+ return ~0U;
+ if (ret < 0)
+ return 0;
+ return (uint32_t)ret;
+}
static void
draw_impl(struct fd_context *ctx, struct fd_ringbuffer *ring,
@@ -58,10 +68,10 @@ draw_impl(struct fd_context *ctx, struct fd_ringbuffer *ring,
OUT_RING(ring, 0x0000000b); /* PC_VERTEX_REUSE_BLOCK_CNTL */
OUT_PKT0(ring, REG_A3XX_VFD_INDEX_MIN, 4);
- OUT_RING(ring, info->min_index); /* VFD_INDEX_MIN */
- OUT_RING(ring, info->max_index); /* VFD_INDEX_MAX */
+ OUT_RING(ring, add_sat(info->min_index, info->index_bias)); /* VFD_INDEX_MIN */
+ OUT_RING(ring, add_sat(info->max_index, info->index_bias)); /* VFD_INDEX_MAX */
OUT_RING(ring, info->start_instance); /* VFD_INSTANCEID_OFFSET */
- OUT_RING(ring, info->start); /* VFD_INDEX_OFFSET */
+ OUT_RING(ring, info->indexed ? info->index_bias : info->start); /* VFD_INDEX_OFFSET */
OUT_PKT0(ring, REG_A3XX_PC_RESTART_INDEX, 1);
OUT_RING(ring, info->primitive_restart ? /* PC_RESTART_INDEX */
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