96fde5518b
Unlike graphics and compute pipelines, Vulkan ray-tracing pipelines do not have a single entrypoint. Instead, the raygen shader is specified as a one-element shader binding table in the vkCmdTraceRay call. This means that raygen shaders have to be bindless shaders just like any other ray tracing shader. To launch them, we have a tiny compute shader that acts as a trampoline and sets up the hotzone and uses btd_spawn to fire off the raygen shader. Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7356>
78 lines
3.1 KiB
C
78 lines
3.1 KiB
C
/*
|
|
* Copyright © 2020 Intel 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 BRW_NIR_RT_H
|
|
#define BRW_NIR_RT_H
|
|
|
|
#include "brw_nir.h"
|
|
#include "brw_rt.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
void brw_nir_lower_raygen(nir_shader *nir);
|
|
void brw_nir_lower_any_hit(nir_shader *nir,
|
|
const struct gen_device_info *devinfo);
|
|
void brw_nir_lower_closest_hit(nir_shader *nir);
|
|
void brw_nir_lower_miss(nir_shader *nir);
|
|
void brw_nir_lower_callable(nir_shader *nir);
|
|
void brw_nir_lower_combined_intersection_any_hit(nir_shader *intersection,
|
|
const nir_shader *any_hit,
|
|
const struct gen_device_info *devinfo);
|
|
|
|
/* We reserve the first 16B of the stack for callee data pointers */
|
|
#define BRW_BTD_STACK_RESUME_BSR_ADDR_OFFSET 0
|
|
#define BRW_BTD_STACK_CALL_DATA_PTR_OFFSET 8
|
|
#define BRW_BTD_STACK_CALLEE_DATA_SIZE 16
|
|
|
|
/* We require the stack to be 8B aligned at the start of a shader */
|
|
#define BRW_BTD_STACK_ALIGN 8
|
|
|
|
void brw_nir_lower_shader_returns(nir_shader *shader);
|
|
|
|
bool brw_nir_lower_shader_calls(nir_shader *shader,
|
|
uint32_t first_resume_sbt_idx,
|
|
nir_shader ***resume_shaders_out,
|
|
uint32_t *num_resume_shaders_out,
|
|
void *mem_ctx);
|
|
|
|
void brw_nir_lower_rt_intrinsics(nir_shader *shader,
|
|
const struct gen_device_info *devinfo);
|
|
void brw_nir_lower_intersection_shader(nir_shader *intersection,
|
|
const nir_shader *any_hit,
|
|
const struct gen_device_info *devinfo);
|
|
|
|
nir_shader *
|
|
brw_nir_create_raygen_trampoline(const struct brw_compiler *compiler,
|
|
void *mem_ctx);
|
|
nir_shader *
|
|
brw_nir_create_trivial_return_shader(const struct brw_compiler *compiler,
|
|
void *mem_ctx);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* BRW_NIR_RT_H */
|