From 746ea7b0cd804afe9ade4516d0e3e2dd2921fe6e Mon Sep 17 00:00:00 2001
From: Faith Ekstrand <faith.ekstrand@collabora.com>
Date: Mon, 7 Oct 2024 17:45:23 -0500
Subject: [PATCH] vulkan: Add a vk_fragment_shading_rate_is_disabled() helper

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31585>
---
 src/vulkan/runtime/vk_graphics_state.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/vulkan/runtime/vk_graphics_state.h b/src/vulkan/runtime/vk_graphics_state.h
index 3309cdfba02..16b1e8bd5de 100644
--- a/src/vulkan/runtime/vk_graphics_state.h
+++ b/src/vulkan/runtime/vk_graphics_state.h
@@ -427,6 +427,15 @@ struct vk_fragment_shading_rate_state {
    VkFragmentShadingRateCombinerOpKHR combiner_ops[2];
 };
 
+static inline bool
+vk_fragment_shading_rate_is_disabled(const struct vk_fragment_shading_rate_state *fsr)
+{
+   return fsr->fragment_size.width == 1 &&
+          fsr->fragment_size.height == 1 &&
+          fsr->combiner_ops[0] == VK_FRAGMENT_SHADING_RATE_COMBINER_OP_KEEP_KHR &&
+          fsr->combiner_ops[1] == VK_FRAGMENT_SHADING_RATE_COMBINER_OP_KEEP_KHR;
+}
+
 /***/
 struct vk_sample_locations_state {
    /** VkSampleLocationsInfoEXT::sampleLocationsPerPixel */