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/*
* Copyright © Microsoft Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#ifndef NIR_TO_DXIL_H
#define NIR_TO_DXIL_H
#include <stdbool.h>
#include "nir.h"
#include "dxil_versions.h"
#ifdef __cplusplus
extern "C" {
#endif
struct blob;
/* Controls how resource decls/accesses are handled. Common to all:
* Images, textures, and samplers map to D3D UAV, SRV, and sampler types
* Shared is lowered to explicit I/O and then to a DXIL-specific intrinsic for 4-byte indices instead of byte addressing
* Input/output are lowered to dedicated intrinsics
*/
enum dxil_environment {
/* In the GL environment:
* Samplers/textures are lowered, vars/intrinsics use binding to refer to them; dynamic array indexing supported with offset srcs
* The lowering done by mesa/st assigns bindings from 0 -> N
* All other resource variables have driver_location set instead, assigned from 0 -> N
* UBOs may or may not have interface variables, and are declared from ubo_binding_offset -> num_ubos
* SSBOs may or may not have interface variables, and are declared from from 0 -> num_ssbos
* Images are *not* lowered, so that dynamic indexing can deterministically get a base binding via the deref chain
* TODO: Maybe support lowering and use nir_intrinsic_range_base to get the base
* No immediate constant buffer, or scratch
*/
DXIL_ENVIRONMENT_GL,
/* In the CL environment:
* Shader kind is always KERNEL
* All resources use binding for identification
* Samplers/textures/images are lowered; dynamic indexing not supported by spec
* UBOs are arrays of uints in the NIR
* SSBOs are implicitly declared via num_kernel_globals
* Variables of shader_temp are used to declare an immediate constant buffer, with load_ptr_dxil intrinsics to access it
* Scratch is supported and lowered to DXIL-specific intrinsics for scalar 32-bit access
*/
DXIL_ENVIRONMENT_CL,
/* In the Vulkan environment:
* All resources use binding / descriptor_set for identification
* Samplers/textures/images support two modes:
* 1. Derefs: deref chains are walked to emit the DXIL handle to the resource; dynamic indexing supported
* 2. Bindless: the resource source is assumed as an index into a descriptor heap
* UBOs/SSBOs are struct variables in the NIR, accessed via vulkan_resource_index/load_vulkan_descriptor; dynamic indexing supported
* If load_vulkan_descriptor gets an index that didn't come from vulkan_resource_index, it is assumed to be an index into a descriptor heap
* Read-only SSBOs, as declared in the SPIR-V, are bound as raw buffer SRVs instead of UAVs, unless they're lowered to bindless
* No immediate constant buffer or scratch
*/
DXIL_ENVIRONMENT_VULKAN,
};
struct nir_to_dxil_options {
bool interpolate_at_vertex;
bool lower_int16;
bool disable_math_refactoring;
bool no_ubo0;
bool last_ubo_is_not_arrayed;
unsigned provoking_vertex;
unsigned num_kernel_globals;
unsigned input_clip_size;
enum dxil_environment environment;
enum dxil_shader_model shader_model_max;
enum dxil_validator_version validator_version_max;
};
typedef void (*dxil_msg_callback)(void *priv, const char *msg);
struct dxil_logger {
void *priv;
dxil_msg_callback log;
};
bool
nir_to_dxil(struct nir_shader *s, const struct nir_to_dxil_options *opts,
const struct dxil_logger *logger, struct blob *blob);
const nir_shader_compiler_options*
dxil_get_base_nir_compiler_options(void);
void
dxil_get_nir_compiler_options(nir_shader_compiler_options *options,
enum dxil_shader_model shader_model_max,
unsigned supported_int_sizes,
unsigned supported_float_sizes);
#ifdef __cplusplus
}
#endif
#endif
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