Mesa (main): zink: fix non-dynamic vertex stride update flagging

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Module: Mesa
Branch: main
Commit: b18448e7acfc765ee95505c7cd5e2ce6e6fc36cc
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=b18448e7acfc765ee95505c7cd5e2ce6e6fc36cc

Author: Mike Blumenkrantz <michael.blumenkrantz at gmail.com>
Date:   Tue Apr 26 09:02:57 2022 -0400

zink: fix non-dynamic vertex stride update flagging

without dynamic vertex input, pipeline vertex state must be recalculated
if buffer strides change or the enabled buffer mask changes in order
to accurately handle dynamic state stride VUs

cc: mesa-stable

fixes:
spec@!opengl 1.1 at array-stride

Reviewed-by: Dave Airlie <airlied at redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16563>

---

 src/gallium/drivers/zink/zink_context.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/gallium/drivers/zink/zink_context.c b/src/gallium/drivers/zink/zink_context.c
index 60f425cd1a1..ebbf85af847 100644
--- a/src/gallium/drivers/zink/zink_context.c
+++ b/src/gallium/drivers/zink/zink_context.c
@@ -1017,18 +1017,19 @@ zink_set_vertex_buffers(struct pipe_context *pctx,
                         const struct pipe_vertex_buffer *buffers)
 {
    struct zink_context *ctx = zink_context(pctx);
+   const bool have_input_state = zink_screen(pctx->screen)->info.have_EXT_vertex_input_dynamic_state;
    const bool need_state_change = !zink_screen(pctx->screen)->info.have_EXT_extended_dynamic_state &&
-                                  !zink_screen(pctx->screen)->info.have_EXT_vertex_input_dynamic_state;
+                                  !have_input_state;
    uint32_t enabled_buffers = ctx->gfx_pipeline_state.vertex_buffers_enabled_mask;
    enabled_buffers |= u_bit_consecutive(start_slot, num_buffers);
    enabled_buffers &= ~u_bit_consecutive(start_slot + num_buffers, unbind_num_trailing_slots);
+   bool stride_changed = false;
 
    if (buffers) {
-      if (need_state_change)
-         ctx->vertex_state_changed = true;
       for (unsigned i = 0; i < num_buffers; ++i) {
          const struct pipe_vertex_buffer *vb = buffers + i;
          struct pipe_vertex_buffer *ctx_vb = &ctx->vertex_buffers[start_slot + i];
+         stride_changed |= ctx_vb->stride != vb->stride;
          update_existing_vbo(ctx, start_slot + i);
          if (!take_ownership)
             pipe_resource_reference(&ctx_vb->buffer.resource, vb->buffer.resource);
@@ -1051,8 +1052,6 @@ zink_set_vertex_buffers(struct pipe_context *pctx,
          }
       }
    } else {
-      if (need_state_change)
-         ctx->vertex_state_changed = true;
       for (unsigned i = 0; i < num_buffers; ++i) {
          update_existing_vbo(ctx, start_slot + i);
          pipe_resource_reference(&ctx->vertex_buffers[start_slot + i].buffer.resource, NULL);
@@ -1062,6 +1061,10 @@ zink_set_vertex_buffers(struct pipe_context *pctx,
       update_existing_vbo(ctx, start_slot + i);
       pipe_resource_reference(&ctx->vertex_buffers[start_slot + i].buffer.resource, NULL);
    }
+   if (need_state_change)
+      ctx->vertex_state_changed = true;
+   else if (!have_input_state && (stride_changed || ctx->gfx_pipeline_state.vertex_buffers_enabled_mask != enabled_buffers))
+      ctx->vertex_state_changed = true;
    ctx->gfx_pipeline_state.vertex_buffers_enabled_mask = enabled_buffers;
    ctx->vertex_buffers_dirty = num_buffers > 0;
 #ifndef NDEBUG