zink: set compareEnable when setting compareOp

We need to enable compareEnable for compareOp to be valid, and ANV was
recently updated to respect this. So let's update Zink to match.

This fixes the shadow-variants of several piglit regressions, like these:
spec@arb_shader_texture_lod@execution@tex-miplevel-selection
[email protected]@execution@tex-miplevel-selection

Fixes: a19cdf989b1 ("anv: only use VkSamplerCreateInfo::compareOp if enabled")
Reviewed-by: Eric Engestrom <[email protected]>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3473>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3473>

1 files changed, 3 insertions, 1 deletions

diff --git a/src/gallium/drivers/zink/zink_context.c b/src/gallium/drivers/zink/zink_context.c
index f79e289727d..f2b9044bc2b 100644
--- a/src/gallium/drivers/zink/zink_context.c
+++ b/src/gallium/drivers/zink/zink_context.c
@@ -140,8 +140,10 @@ zink_create_sampler_state(struct pipe_context *pctx,
 
    if (state->compare_mode == PIPE_TEX_COMPARE_NONE)
       sci.compareOp = VK_COMPARE_OP_NEVER;
-   else
+   else {
       sci.compareOp = compare_op(state->compare_func);
+      sci.compareEnable = VK_TRUE;
+   }
 
    sci.borderColor = VK_BORDER_COLOR_FLOAT_TRANSPARENT_BLACK; // TODO
    sci.unnormalizedCoordinates = !state->normalized_coords;