Misaki/SimpleRayTracing
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Update AOV support, ray intersection logic, and README

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Added:
- AOV support for normals, albedo, and depth marked as completed.
- New function `normal_unpack` in `BSDF.h`.
- New field `esp` in `ray_t` structure in `RayIntersection.h`.

Changed:
- Updated `normal_ts_to_ws` to accept an additional parameter.
- Refactored `weight_nee_light` for clarity.
- Modified `RAY_EPSILON` for improved precision.
- Updated `path_output` structure to include a `normal` field.
- Normalized unpacked normal vector in `normal_unpack` function.
- Updated `path_trace` to use closest hit ray intersection.
- Updated `render_aov` to utilize closest hit logic.
- Modified `ray_create` to initialize `esp` based on ray origin.
- Improved accuracy in `offset_ray_origin` calculations.
- Updated ray intersection logic in `ray_intersect_triangle` and `ray_intersect_aabb` to include epsilon checks.
- Updated `evaluate_bsdf_directional` and `evaluate_bsdf_const_sky` for shadow rays.
- Adjusted `sample_bsdf_simple_lit` for incoming light direction calculations.
- Enhanced `render_pixel` to manage AOV flags effectively.
- Changed camera rotation and light intensity in `scene_setup`.
- Simplified texture loading by removing unnecessary sRGB conversion.

Modified:
- Several binary image files have been updated.
This commit is contained in:
Misaki
2025-05-05 01:59:13 +09:00
parent 4b29de15cd
commit f940569ca3
21 changed files with 190 additions and 85 deletions
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25
source/Lighting/SkyLight.c
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@@ -47,11 +47,10 @@ path_output evaluate_bsdf_const_sky(const void* data, const light_shading_contex
vec3s wi = random_uniform_cdf_direction(context->normal, sample_index, d1, d2);
ray_t shadow_ray = ray_create(BIAS_RAY_ORIGION(context->position, context->normal), wi);
ray_t shadow_ray = ray_create(offset_ray_origin(context->position, context->normal, context->wo), wi);
float closest = FLT_MAX;
hit_result_t shadow_hit = {1};
ray_intersect_bvh(&shadow_ray, context->bvh_tree->nodes, context->bvh_tree->primitive_indices, context->bvh_tree->triangles, 0, &closest, &shadow_hit);
hit_result_t shadow_hit = {0};
ray_intersect_bvh_any(&shadow_ray, context->bvh_tree->nodes, context->bvh_tree->primitive_indices, context->bvh_tree->triangles, 0, &shadow_hit);
if (shadow_hit.hit)
{
return output;
@@ -305,8 +304,15 @@ path_output evaluate_bsdf_hdr_sky(const void* data, const light_shading_context_
}
uint32_t i,j;
// TODO: Should we also use sobol numbers for the sky sampling?
uv_to_index((vec2s){random_float(), random_float()}, sky_data->width, sky_data->height, &j, &i);
// Should we also use sobol numbers for the sky sampling?
//uint16_t d1 = sobol_get_dimension(context->bounce_depth, PRNG_LIGHT_U);
//uint16_t d2 = sobol_get_dimension(context->bounce_depth, PRNG_LIGHT_V);
//float r1 = sobol_sample(sample_index, d1);
//float r2 = sobol_sample(sample_index, d2);
float r1 = random_float();
float r2 = random_float();
uv_to_index((vec2s){r1, r2}, sky_data->width, sky_data->height, &j, &i);
vec3s cdf = sky_data->cdf_cache[i * sky_data->width + j];
vec3s wi = equirectangular_to_direction(cdf.x,-cdf.y);
@@ -316,11 +322,10 @@ path_output evaluate_bsdf_hdr_sky(const void* data, const light_shading_context_
return output;
}
ray_t shadow_ray = ray_create(BIAS_RAY_ORIGION(context->position, context->normal), wi);
ray_t shadow_ray = ray_create(offset_ray_origin(context->position, context->normal, context->wo), wi);
float closest = FLT_MAX;
hit_result_t shadow_hit = {1};
ray_intersect_bvh(&shadow_ray, context->bvh_tree->nodes, context->bvh_tree->primitive_indices, context->bvh_tree->triangles, 0, &closest, &shadow_hit);
hit_result_t shadow_hit = {0};
ray_intersect_bvh_any(&shadow_ray, context->bvh_tree->nodes, context->bvh_tree->primitive_indices, context->bvh_tree->triangles, 0, &shadow_hit);
if (shadow_hit.hit)
{
return output;