radeonsi: use a clever alignment for index buffer uploads

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

diff --git a/src/gallium/drivers/radeonsi/si_state_draw.c b/src/gallium/drivers/radeonsi/si_state_draw.c
index e341f33fb1acdb19ab63443a5572d494c347373a..34a44cc31fde254fb72f4db99a16440e77a96a6b 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_state_draw.c
+++ b/src/gallium/drivers/radeonsi/si_state_draw.c
@@ -1048,14 +1048,16 @@ void si_draw_vbo(struct pipe_context *ctx, const struct pipe_draw_info *info)
                /* 8-bit indices are supported on VI. */
                if (sctx->b.chip_class <= CIK && ib.index_size == 1) {
                        struct pipe_resource *out_buffer = NULL;
-                       unsigned out_offset, start, count, start_offset;
+                       unsigned out_offset, start, count, start_offset, size;
                        void *ptr;
 
                        si_get_draw_start_count(sctx, info, &start, &count);
                        start_offset = start * ib.index_size;
+                       size = count * 2;
 
                        u_upload_alloc(ctx->stream_uploader, start_offset,
-                                       count * 2, 256,
+                                      size,
+                                      si_optimal_tcc_alignment(sctx, size),
                                       &out_offset, &out_buffer, &ptr);
                        if (!out_buffer) {
                                pipe_resource_reference(&ib.buffer, NULL);
@@ -1079,8 +1081,9 @@ void si_draw_vbo(struct pipe_context *ctx, const struct pipe_draw_info *info)
                        start_offset = start * ib.index_size;
 
                        u_upload_data(ctx->stream_uploader, start_offset,
-                                      count * ib.index_size,
-                                     256, (char*)ib.user_buffer + start_offset,
+                                     count * ib.index_size,
+                                     sctx->screen->b.info.tcc_cache_line_size,
+                                     (char*)ib.user_buffer + start_offset,
                                      &ib.offset, &ib.buffer);
                        if (!ib.buffer)
                                return;