panvk: wire up version-overriding

Not a whole lot of applications supports Vulkan 1.0, so let's wire up
support for MESA_VK_VERSION_OVERRIDE so we can easily override the
version to when testing.

While we're at it, let's switch to VK_MAKE_API_VERSION, as
VK_MAKE_VERSION is deprecated now.

Reviewed-by: Mary Guillemard <mary.guillemard@collabora.com>
Reviewed-by: Rebecca Mckeever <rebecca.mckeever@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28694>

src/panfrost/vulkan/panvk_instance.c

@@ -42,7 +42,7 @@ static const struct debug_control panvk_debug_options[] = {
 VKAPI_ATTR VkResult VKAPI_CALL
 panvk_EnumerateInstanceVersion(uint32_t *pApiVersion)
 {
-   *pApiVersion = VK_MAKE_VERSION(1, 0, VK_HEADER_VERSION);
+   *pApiVersion = panvk_get_vk_version();
    return VK_SUCCESS;
 }
 

src/panfrost/vulkan/panvk_physical_device.c

@@ -598,7 +598,7 @@ panvk_GetPhysicalDeviceProperties2(VkPhysicalDevice physicalDevice,
    };
 
    pProperties->properties = (VkPhysicalDeviceProperties){
-      .apiVersion = VK_MAKE_VERSION(1, 0, VK_HEADER_VERSION),
+      .apiVersion = panvk_get_vk_version(),
       .driverVersion = vk_get_driver_version(),
 
       /* Arm vendor ID. */

src/panfrost/vulkan/panvk_physical_device.h

@@ -12,6 +12,7 @@
 
 #include "vk_physical_device.h"
 #include "vk_sync.h"
+#include "vk_util.h"
 #include "wsi_common.h"
 
 #include "lib/kmod/pan_kmod.h"
@@ -57,6 +58,16 @@ to_panvk_physical_device(struct vk_physical_device *phys_dev)
    return container_of(phys_dev, struct panvk_physical_device, vk);
 }
 
+static inline uint32_t
+panvk_get_vk_version()
+{
+   const uint32_t version_override = vk_get_version_override();
+   if (version_override)
+      return version_override;
+
+   return VK_MAKE_API_VERSION(0, 1, 0, VK_HEADER_VERSION);
+}
+
 VkResult panvk_physical_device_init(struct panvk_physical_device *device,
                                     struct panvk_instance *instance,
                                     drmDevicePtr drm_device);