5152c7c152
For transparency, volume and light intersection rays, adjust these distances rather than the ray start position. This way we increment the start distance by the smallest possible float increment to avoid self intersections, and be sure it works as the distance compared to be will be exactly the same as before, due to the ray start position and direction remaining the same. Fix T98764, T96537, hair ray tracing precision issues. Differential Revision: https://developer.blender.org/D15455
79 lines
4.3 KiB
C
79 lines
4.3 KiB
C
/* SPDX-License-Identifier: Apache-2.0
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* Copyright 2011-2022 Blender Foundation */
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/********************************* Shadow Path State **************************/
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KERNEL_STRUCT_BEGIN(shadow_path)
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/* Index of a pixel within the device render buffer. */
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KERNEL_STRUCT_MEMBER(shadow_path, uint32_t, render_pixel_index, KERNEL_FEATURE_PATH_TRACING)
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/* Current sample number. */
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KERNEL_STRUCT_MEMBER(shadow_path, uint32_t, sample, KERNEL_FEATURE_PATH_TRACING)
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/* Random number generator seed. */
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KERNEL_STRUCT_MEMBER(shadow_path, uint32_t, rng_hash, KERNEL_FEATURE_PATH_TRACING)
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/* Random number dimension offset. */
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KERNEL_STRUCT_MEMBER(shadow_path, uint16_t, rng_offset, KERNEL_FEATURE_PATH_TRACING)
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/* Current ray bounce depth. */
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KERNEL_STRUCT_MEMBER(shadow_path, uint16_t, bounce, KERNEL_FEATURE_PATH_TRACING)
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/* Current transparent ray bounce depth. */
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KERNEL_STRUCT_MEMBER(shadow_path, uint16_t, transparent_bounce, KERNEL_FEATURE_PATH_TRACING)
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/* Current diffuse ray bounce depth. */
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KERNEL_STRUCT_MEMBER(shadow_path, uint16_t, diffuse_bounce, KERNEL_FEATURE_PATH_TRACING)
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/* Current glossy ray bounce depth. */
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KERNEL_STRUCT_MEMBER(shadow_path, uint16_t, glossy_bounce, KERNEL_FEATURE_PATH_TRACING)
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/* Current transmission ray bounce depth. */
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KERNEL_STRUCT_MEMBER(shadow_path, uint16_t, transmission_bounce, KERNEL_FEATURE_PATH_TRACING)
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/* DeviceKernel bit indicating queued kernels. */
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KERNEL_STRUCT_MEMBER(shadow_path, uint16_t, queued_kernel, KERNEL_FEATURE_PATH_TRACING)
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/* enum PathRayFlag */
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KERNEL_STRUCT_MEMBER(shadow_path, uint32_t, flag, KERNEL_FEATURE_PATH_TRACING)
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/* Throughput. */
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KERNEL_STRUCT_MEMBER(shadow_path, packed_float3, throughput, KERNEL_FEATURE_PATH_TRACING)
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/* Throughput for shadow pass. */
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KERNEL_STRUCT_MEMBER(shadow_path,
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packed_float3,
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unshadowed_throughput,
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KERNEL_FEATURE_SHADOW_PASS | KERNEL_FEATURE_AO_ADDITIVE)
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/* Ratio of throughput to distinguish diffuse / glossy / transmission render passes. */
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KERNEL_STRUCT_MEMBER(shadow_path, packed_float3, pass_diffuse_weight, KERNEL_FEATURE_LIGHT_PASSES)
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KERNEL_STRUCT_MEMBER(shadow_path, packed_float3, pass_glossy_weight, KERNEL_FEATURE_LIGHT_PASSES)
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/* Number of intersections found by ray-tracing. */
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KERNEL_STRUCT_MEMBER(shadow_path, uint16_t, num_hits, KERNEL_FEATURE_PATH_TRACING)
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/* Light group. */
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KERNEL_STRUCT_MEMBER(shadow_path, uint8_t, lightgroup, KERNEL_FEATURE_PATH_TRACING)
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KERNEL_STRUCT_END(shadow_path)
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/********************************** Shadow Ray *******************************/
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KERNEL_STRUCT_BEGIN(shadow_ray)
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KERNEL_STRUCT_MEMBER(shadow_ray, packed_float3, P, KERNEL_FEATURE_PATH_TRACING)
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KERNEL_STRUCT_MEMBER(shadow_ray, packed_float3, D, KERNEL_FEATURE_PATH_TRACING)
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KERNEL_STRUCT_MEMBER(shadow_ray, float, tmin, KERNEL_FEATURE_PATH_TRACING)
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KERNEL_STRUCT_MEMBER(shadow_ray, float, tmax, KERNEL_FEATURE_PATH_TRACING)
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KERNEL_STRUCT_MEMBER(shadow_ray, float, time, KERNEL_FEATURE_PATH_TRACING)
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KERNEL_STRUCT_MEMBER(shadow_ray, float, dP, KERNEL_FEATURE_PATH_TRACING)
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KERNEL_STRUCT_MEMBER(shadow_ray, int, object, KERNEL_FEATURE_PATH_TRACING)
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KERNEL_STRUCT_END(shadow_ray)
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/*********************** Shadow Intersection result **************************/
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/* Result from scene intersection. */
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KERNEL_STRUCT_BEGIN(shadow_isect)
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KERNEL_STRUCT_ARRAY_MEMBER(shadow_isect, float, t, KERNEL_FEATURE_PATH_TRACING)
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KERNEL_STRUCT_ARRAY_MEMBER(shadow_isect, float, u, KERNEL_FEATURE_PATH_TRACING)
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KERNEL_STRUCT_ARRAY_MEMBER(shadow_isect, float, v, KERNEL_FEATURE_PATH_TRACING)
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KERNEL_STRUCT_ARRAY_MEMBER(shadow_isect, int, prim, KERNEL_FEATURE_PATH_TRACING)
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KERNEL_STRUCT_ARRAY_MEMBER(shadow_isect, int, object, KERNEL_FEATURE_PATH_TRACING)
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KERNEL_STRUCT_ARRAY_MEMBER(shadow_isect, int, type, KERNEL_FEATURE_PATH_TRACING)
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KERNEL_STRUCT_END_ARRAY(shadow_isect,
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INTEGRATOR_SHADOW_ISECT_SIZE_CPU,
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INTEGRATOR_SHADOW_ISECT_SIZE_GPU)
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/**************************** Shadow Volume Stack *****************************/
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KERNEL_STRUCT_BEGIN(shadow_volume_stack)
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KERNEL_STRUCT_ARRAY_MEMBER(shadow_volume_stack, int, object, KERNEL_FEATURE_VOLUME)
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KERNEL_STRUCT_ARRAY_MEMBER(shadow_volume_stack, int, shader, KERNEL_FEATURE_VOLUME)
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KERNEL_STRUCT_END_ARRAY(shadow_volume_stack,
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KERNEL_STRUCT_VOLUME_STACK_SIZE,
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KERNEL_STRUCT_VOLUME_STACK_SIZE)
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