vulkan/util: add vk_topology_to_mesa helper function

Something like this already exists in a few drivers, move it to common
code. This specific version was pulled from honeykrisp, which is the
only one that handles META_RECT_LIST_MESA.

Signed-off-by: Olivia Lee <olivia.lee@collabora.com>
Reviewed-by: Mary Guillemard <mary.guillemard@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37038>

src/vulkan/runtime/vk_meta.h

@@ -26,6 +26,7 @@
 #include "vk_internal_exts.h"
 #include "vk_limits.h"
 #include "vk_object.h"
+#include "vk_util.h"
 
 #include "util/simple_mtx.h"
 

src/vulkan/util/vk_util.c

@@ -26,6 +26,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include "vk_internal_exts.h"
 #include "vk_util.h"
 #include "util/u_debug.h"
 
@@ -141,3 +142,38 @@ vk_spec_info_to_nir_spirv(const VkSpecializationInfo *spec_info,
    *out_num_spec_entries = num_spec_entries;
    return spec_entries;
 }
+
+enum mesa_prim
+vk_topology_to_mesa(VkPrimitiveTopology topology)
+{
+   switch (topology) {
+   case VK_PRIMITIVE_TOPOLOGY_POINT_LIST:
+      return MESA_PRIM_POINTS;
+   case VK_PRIMITIVE_TOPOLOGY_LINE_LIST:
+      return MESA_PRIM_LINES;
+   case VK_PRIMITIVE_TOPOLOGY_LINE_STRIP:
+      return MESA_PRIM_LINE_STRIP;
+   case VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST:
+PRAGMA_DIAGNOSTIC_PUSH
+PRAGMA_DIAGNOSTIC_IGNORED(-Wswitch)
+   case VK_PRIMITIVE_TOPOLOGY_META_RECT_LIST_MESA:
+PRAGMA_DIAGNOSTIC_POP
+      return MESA_PRIM_TRIANGLES;
+   case VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP:
+      return MESA_PRIM_TRIANGLE_STRIP;
+   case VK_PRIMITIVE_TOPOLOGY_TRIANGLE_FAN:
+      return MESA_PRIM_TRIANGLE_FAN;
+   case VK_PRIMITIVE_TOPOLOGY_LINE_LIST_WITH_ADJACENCY:
+      return MESA_PRIM_LINES_ADJACENCY;
+   case VK_PRIMITIVE_TOPOLOGY_LINE_STRIP_WITH_ADJACENCY:
+      return MESA_PRIM_LINE_STRIP_ADJACENCY;
+   case VK_PRIMITIVE_TOPOLOGY_TRIANGLE_LIST_WITH_ADJACENCY:
+      return MESA_PRIM_TRIANGLES_ADJACENCY;
+   case VK_PRIMITIVE_TOPOLOGY_TRIANGLE_STRIP_WITH_ADJACENCY:
+      return MESA_PRIM_TRIANGLE_STRIP_ADJACENCY;
+   case VK_PRIMITIVE_TOPOLOGY_PATCH_LIST:
+      return MESA_PRIM_PATCHES;
+   default:
+      UNREACHABLE("invalid");
+   }
+}

src/vulkan/util/vk_util.h

@@ -401,6 +401,8 @@ vk_descriptor_type_is_dynamic(VkDescriptorType type)
    }
 }
 
+enum mesa_prim vk_topology_to_mesa(VkPrimitiveTopology topology);
+
 #define VK_PRINT_STR(field, ...) do {                          \
    memset(field, 0, sizeof(field));                            \
    UNUSED int i = snprintf(field, sizeof(field), __VA_ARGS__); \