Mesa (main): zink: improve detection for broken drawids

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Module: Mesa
Branch: main
Commit: d08c84ab0c3ab1f8061e5d9ea1bcff2ed8b6cf57
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=d08c84ab0c3ab1f8061e5d9ea1bcff2ed8b6cf57

Author: Mike Blumenkrantz <michael.blumenkrantz at gmail.com>
Date:   Wed Jul 14 14:21:24 2021 -0400

zink: improve detection for broken drawids

this is also broken for multidraws where drawid shouldn't be incremented

Fixes: 2d32d123e56 ("zink: avoid unnecessarily rewriting gl_DrawID")

Reviewed-by: Dave Airlie <airlied at redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11878>

---

 src/gallium/drivers/zink/zink_draw.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/gallium/drivers/zink/zink_draw.c b/src/gallium/drivers/zink/zink_draw.c
index d8280c649cd..fc0c300fdec 100644
--- a/src/gallium/drivers/zink/zink_draw.c
+++ b/src/gallium/drivers/zink/zink_draw.c
@@ -422,7 +422,8 @@ zink_draw_vbo(struct pipe_context *pctx,
    if (!dindirect || !dindirect->buffer)
       ctx->drawid_broken = BITSET_TEST(ctx->gfx_stages[PIPE_SHADER_VERTEX]->nir->info.system_values_read, SYSTEM_VALUE_DRAW_ID) &&
                            (drawid_offset != 0 ||
-                           ((!ctx->tc || !screen->info.have_EXT_multi_draw) && num_draws > 1));
+                           (!screen->info.have_EXT_multi_draw && num_draws > 1) ||
+                           (screen->info.have_EXT_multi_draw && num_draws > 1 && !dinfo->increment_draw_id));
    if (drawid_broken != ctx->drawid_broken)
       ctx->dirty_shader_stages |= BITFIELD_BIT(PIPE_SHADER_VERTEX);
    ctx->gfx_pipeline_state.vertices_per_patch = dinfo->vertices_per_patch;