diff options
Diffstat (limited to 'src/compiler/nir/nir_intrinsics.h')
| -rw-r--r-- | src/compiler/nir/nir_intrinsics.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/compiler/nir/nir_intrinsics.h b/src/compiler/nir/nir_intrinsics.h index 05507dc..66a169c 100644 --- a/src/compiler/nir/nir_intrinsics.h +++ b/src/compiler/nir/nir_intrinsics.h @@ -176,6 +176,26 @@ INTRINSIC(image_samples, 0, ARR(0), true, 1, 1, 0, xx, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER) /* + * Vulkan descriptor set intrinsic + * + * The Vulkan API uses a different binding model from GL. In the Vulkan + * API, all external resources are represented by a tuple: + * + * (descriptor set, binding, array index) + * + * where the array index is the only thing allowed to be indirect. The + * vulkan_surface_index intrinsic takes the descriptor set and binding as + * its first two indices and the array index as its source. The third + * index is a nir_variable_mode in case that's useful to the backend. + * + * The intended usage is that the shader will call vulkan_surface_index to + * get an index and then pass that as the buffer index ubo/ssbo calls. + */ +INTRINSIC(vulkan_resource_index, 1, ARR(1), true, 1, 0, 2, + DESC_SET, BINDING, xx, + NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER) + +/* * variable atomic intrinsics * * All of these variable atomic memory operations read a value from memory, |