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
spec@glsl-1.20@execution@tex-miplevel-selection

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

diff --git a/src/gallium/drivers/zink/zink_context.c b/src/gallium/drivers/zink/zink_context.c
index f79e289727d61a253edadb2e5ecffe33bc652e01..f2b9044bc2bc7e471bca40a53913c90fdf654490 100644 (file)
--- 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;