anv: Implement VK_AMD_texture_gather_bias_lod

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Signed-off-by: Sagar Ghuge <sagar.ghuge@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27447>

src/intel/vulkan/anv_device.c

@@ -409,6 +409,7 @@ get_device_extensions(const struct anv_physical_device *device,
       .EXT_vertex_input_dynamic_state        = true,
       .EXT_ycbcr_image_arrays                = true,
       .AMD_buffer_marker                     = true,
+      .AMD_texture_gather_bias_lod           = device->info.ver >= 20,
 #if DETECT_OS_ANDROID
       .ANDROID_external_memory_android_hardware_buffer = true,
       .ANDROID_native_buffer                 = true,

src/intel/vulkan/anv_formats.c

@@ -1591,6 +1591,7 @@ VkResult anv_GetPhysicalDeviceImageFormatProperties2(
    VkExternalImageFormatProperties *external_props = NULL;
    VkSamplerYcbcrConversionImageFormatProperties *ycbcr_props = NULL;
    UNUSED VkAndroidHardwareBufferUsageANDROID *android_usage = NULL;
+   VkTextureLODGatherFormatPropertiesAMD *texture_lod_gather_props = NULL;
    VkResult result;
    bool from_wsi = false;
 
@@ -1631,6 +1632,9 @@ VkResult anv_GetPhysicalDeviceImageFormatProperties2(
       case VK_STRUCTURE_TYPE_ANDROID_HARDWARE_BUFFER_USAGE_ANDROID:
          android_usage = (void *) s;
          break;
+      case VK_STRUCTURE_TYPE_TEXTURE_LOD_GATHER_FORMAT_PROPERTIES_AMD:
+         texture_lod_gather_props = (void *) s;
+         break;
       default:
          anv_debug_ignored_stype(s->sType);
          break;
@@ -1790,6 +1794,11 @@ VkResult anv_GetPhysicalDeviceImageFormatProperties2(
       }
    }
 
+   if (texture_lod_gather_props) {
+      texture_lod_gather_props->supportsTextureGatherLODBiasAMD =
+         physical_device->info.ver >= 20;
+   }
+
    return VK_SUCCESS;
 
  fail:

src/intel/vulkan/anv_pipeline.c

@@ -145,6 +145,7 @@ anv_shader_stage_to_nir(struct anv_device *device,
    const bool rt_enabled = ANV_SUPPORT_RT && pdevice->info.has_ray_tracing;
    const struct spirv_to_nir_options spirv_options = {
       .caps = {
+         .amd_image_gather_bias_lod = pdevice->info.ver >= 20,
          .cooperative_matrix = anv_has_cooperative_matrix(pdevice),
          .demote_to_helper_invocation = true,
          .derivative_group = true,