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+ | Opti bvh on compute.glsl

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RedShip
2025-01-18 21:12:11 +01:00
parent 146381f191
commit 388ad5fc7d
6 changed files with 59 additions and 36 deletions
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69
shaders/trace.glsl
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@ -77,32 +77,49 @@ hitInfo traceBVH(Ray ray)
GPUBvh node = bvh[current_index];
hitInfo temp_hit;
if (intersectRayBVH(ray, node, temp_hit) && temp_hit.t < hit.t)
{
if (node.is_leaf != 0)
{
for (int i = 0; i < node.primitive_count; i++)
{
GPUTriangle obj = triangles[node.first_primitive + i];
hitInfo temp_hit;
if (intersectTriangle(ray, obj, temp_hit) && temp_hit.t > 0.0f && temp_hit.t < hit.t + 0.0001)
{
hit.t = temp_hit.t;
hit.last_t = temp_hit.last_t;
hit.obj_index = node.first_primitive + i;
hit.mat_index = obj.mat_index;
hit.position = temp_hit.position;
hit.normal = temp_hit.normal;
}
}
}
else
{
stack[++stack_ptr] = node.left_index;
stack[++stack_ptr] = node.right_index;
}
}
if (node.is_leaf != 0)
{
for (int i = 0; i < node.primitive_count; i++)
{
GPUTriangle obj = triangles[node.first_primitive + i];
hitInfo temp_hit;
if (intersectTriangle(ray, obj, temp_hit) && temp_hit.t > 0.0f && temp_hit.t < hit.t + 0.0001)
{
hit.t = temp_hit.t;
hit.last_t = temp_hit.last_t;
hit.obj_index = node.first_primitive + i;
hit.mat_index = obj.mat_index;
hit.position = temp_hit.position;
hit.normal = temp_hit.normal;
}
}
}
else
{
GPUBvh left_node = bvh[node.left_index];
GPUBvh right_node = bvh[node.right_index];
hitInfo left_hit;
hitInfo right_hit;
left_hit.t = 1e30;
right_hit.t = 1e30;
bool left_bool = intersectRayBVH(ray, left_node, left_hit);
bool right_bool = intersectRayBVH(ray, right_node, right_hit);
if (left_hit.t > right_hit.t)
{
if (left_hit.t < hit.t && left_bool) stack[++stack_ptr] = node.left_index;
if (right_hit.t < hit.t && right_bool) stack[++stack_ptr] = node.right_index;
}
else
{
if (right_hit.t < hit.t && right_bool) stack[++stack_ptr] = node.right_index;
if (left_hit.t < hit.t && left_bool) stack[++stack_ptr] = node.left_index;
}
}
}
return (hit);