mirror of
https://github.com/blender/blender
synced 2026-10-25 03:07:01 +03:00
cc93b7f5a4
We are running out of bits. Split the original `ShaderDataFlag` into `ShaderRuntimeFlag`, which is determined by closures in the shader and set up during rendering, and `ShaderDataFlag`, which is the same for the whole shader graph and hence determined during shader compilation The size of `ShaderData` did not change due to padding Pull Request: https://projects.blender.org/blender/blender/pulls/161856
59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/* SPDX-FileCopyrightText: 2023 Blender Authors
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0 */
|
|
|
|
#pragma once
|
|
|
|
#include "kernel/types.h"
|
|
|
|
#include "kernel/closure/alloc.h"
|
|
|
|
CCL_NAMESPACE_BEGIN
|
|
|
|
struct RayPortalClosure {
|
|
SHADER_CLOSURE_BASE;
|
|
|
|
float3 P;
|
|
float3 D;
|
|
};
|
|
|
|
static_assert(sizeof(ShaderClosure) >= sizeof(RayPortalClosure), "RayPortalClosure is too large!");
|
|
|
|
ccl_device void bsdf_ray_portal_setup(ccl_private ShaderData *sd,
|
|
const Spectrum weight,
|
|
const float3 position,
|
|
float3 direction)
|
|
{
|
|
/* Check cutoff weight. */
|
|
const float sample_weight = fabsf(average(weight));
|
|
if (!(sample_weight >= CLOSURE_WEIGHT_CUTOFF)) {
|
|
return;
|
|
}
|
|
|
|
sd->closure_transparent_extinction += weight;
|
|
|
|
ccl_private RayPortalClosure *pc = (ccl_private RayPortalClosure *)closure_alloc(
|
|
sd, sizeof(RayPortalClosure), CLOSURE_BSDF_RAY_PORTAL_ID, weight);
|
|
|
|
if (pc) {
|
|
sd->runtime_flag |= SR_BSDF | SR_RAY_PORTAL;
|
|
if (is_zero(direction)) {
|
|
direction = -sd->wi;
|
|
}
|
|
pc->sample_weight = sample_weight;
|
|
pc->N = sd->N;
|
|
pc->P = position;
|
|
pc->D = safe_normalize(direction);
|
|
}
|
|
}
|
|
|
|
ccl_device Spectrum bsdf_ray_portal_eval(const ccl_private ShaderClosure * /*sc*/,
|
|
const float3 /*wi*/,
|
|
const float3 /*wo*/,
|
|
ccl_private float *pdf)
|
|
{
|
|
*pdf = 0.0f;
|
|
return zero_spectrum();
|
|
}
|
|
|
|
CCL_NAMESPACE_END
|