tu: Hash pipeline layout contents

Mostly adapted from anv.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16147>

src/freedreno/vulkan/tu_descriptor_set.c

@@ -381,6 +381,50 @@ out:
    pSupport->supported = supported;
 }
 
+/* Note: we must hash any values used in tu_lower_io(). */
+
+#define SHA1_UPDATE_VALUE(ctx, x) _mesa_sha1_update(ctx, &(x), sizeof(x));
+
+static void
+sha1_update_ycbcr_sampler(struct mesa_sha1 *ctx,
+                          const struct tu_sampler_ycbcr_conversion *sampler)
+{
+   SHA1_UPDATE_VALUE(ctx, sampler->ycbcr_model);
+   SHA1_UPDATE_VALUE(ctx, sampler->ycbcr_range);
+   SHA1_UPDATE_VALUE(ctx, sampler->format);
+}
+
+static void
+sha1_update_descriptor_set_binding_layout(struct mesa_sha1 *ctx,
+   const struct tu_descriptor_set_binding_layout *layout,
+   const struct tu_descriptor_set_layout *set_layout)
+{
+   SHA1_UPDATE_VALUE(ctx, layout->type);
+   SHA1_UPDATE_VALUE(ctx, layout->offset);
+   SHA1_UPDATE_VALUE(ctx, layout->size);
+   SHA1_UPDATE_VALUE(ctx, layout->array_size);
+   SHA1_UPDATE_VALUE(ctx, layout->dynamic_offset_offset);
+   SHA1_UPDATE_VALUE(ctx, layout->immutable_samplers_offset);
+
+   const struct tu_sampler_ycbcr_conversion *ycbcr_samplers =
+      tu_immutable_ycbcr_samplers(set_layout, layout);
+
+   if (ycbcr_samplers) {
+      for (unsigned i = 0; i < layout->array_size; i++)
+         sha1_update_ycbcr_sampler(ctx, ycbcr_samplers + i);
+   }
+}
+
+
+static void
+sha1_update_descriptor_set_layout(struct mesa_sha1 *ctx,
+                                  const struct tu_descriptor_set_layout *layout)
+{
+   for (uint16_t i = 0; i < layout->binding_count; i++)
+      sha1_update_descriptor_set_binding_layout(ctx, &layout->binding[i],
+                                                layout);
+}
+
 /*
  * Pipeline layouts.  These have nothing to do with the pipeline.  They are
  * just multiple descriptor set layouts pasted together.
@@ -428,6 +472,19 @@ tu_CreatePipelineLayout(VkDevice _device,
    }
 
    layout->push_constant_size = align(layout->push_constant_size, 16);
+
+   struct mesa_sha1 ctx;
+   _mesa_sha1_init(&ctx);
+   for (unsigned s = 0; s < layout->num_sets; s++) {
+      sha1_update_descriptor_set_layout(&ctx, layout->set[s].layout);
+      _mesa_sha1_update(&ctx, &layout->set[s].dynamic_offset_start,
+                        sizeof(layout->set[s].dynamic_offset_start));
+   }
+   _mesa_sha1_update(&ctx, &layout->num_sets, sizeof(layout->num_sets));
+   _mesa_sha1_update(&ctx, &layout->push_constant_size,
+                     sizeof(layout->push_constant_size));
+   _mesa_sha1_final(&ctx, layout->sha1);
+
    *pPipelineLayout = tu_pipeline_layout_to_handle(layout);
 
    return VK_SUCCESS;

src/freedreno/vulkan/tu_descriptor_set.h

@@ -124,6 +124,8 @@ struct tu_pipeline_layout
    uint32_t num_sets;
    uint32_t push_constant_size;
    uint32_t dynamic_offset_size;
+
+   unsigned char sha1[20];
 };
 
 static inline const struct tu_sampler *