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+ | Multiple obj implenting on compute

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TheRedShip
2025-01-20 10:28:24 +01:00
parent 0f32453088
commit fcf693329d
5 changed files with 61 additions and 21 deletions
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46
shaders/trace.glsl
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@ -53,10 +53,10 @@ hitInfo traceScene(Ray ray)
return (hit);
}
hitInfo traceBVH(Ray ray)
hitInfo traceBVH(Ray ray, GPUBvhData bvh_data)
{
hitInfo temp_hit;
hitInfo hit;
hitInfo hit_bvh;
hit.t = 1e30;
hit.obj_index = -1;
@ -64,24 +64,24 @@ hitInfo traceBVH(Ray ray)
int stack[32];
int stack_ptr = 0;
stack[0] = 0;
while (stack_ptr >= 0)
{
int current_index = stack[stack_ptr--];
GPUBvh node = Bvh[bvh_data.bvh_start_index + current_index];
GPUBvh node = bvh[current_index];
if (node.is_leaf != 0)
{
for (int i = 0; i < node.primitive_count; i++)
{
GPUTriangle obj = triangles[node.first_primitive + i];
GPUTriangle obj = triangles[bvh_data.triangle_start_index + node.first_primitive + i];
hitInfo temp_hit;
if (intersectTriangle(ray, obj, temp_hit) && temp_hit.t < hit.t)
{
hit.t = temp_hit.t;
hit.last_t = temp_hit.last_t;
hit.obj_index = node.first_primitive + i;
hit.obj_index = bvh_data.triangle_start_index + node.first_primitive + i;
hit.mat_index = obj.mat_index;
hit.position = temp_hit.position;
hit.normal = temp_hit.normal;
@ -90,8 +90,8 @@ hitInfo traceBVH(Ray ray)
}
else
{
GPUBvh left_node = bvh[node.left_index];
GPUBvh right_node = bvh[node.right_index];
GPUBvh left_node = Bvh[bvh_data.bvh_start_index + node.left_index];
GPUBvh right_node = Bvh[bvh_data.bvh_start_index + node.right_index];
hitInfo left_hit;
hitInfo right_hit;
@ -118,6 +118,32 @@ hitInfo traceBVH(Ray ray)
return (hit);
}
hitInfo traverseBVHs(Ray ray)
{
hitInfo hit;
hit.t = 1e30;
hit.obj_index = -1;
for (int i = 0; i < u_bvhNum; i++)
{
ray.origin = i == 0 ? ray.origin : ray.origin + vec3(2., 0., 0.);
hitInfo temp_hit = traceBVH(ray, BvhData[i]);
if (temp_hit.t < hit.t)
{
hit.t = temp_hit.t;
hit.last_t = temp_hit.last_t;
hit.obj_index = temp_hit.obj_index;
hit.mat_index = temp_hit.mat_index;
hit.position = temp_hit.position;
hit.normal = temp_hit.normal;
}
}
return (hit);
}
hitInfo traceRay(Ray ray)
{
hitInfo hitBVH;
@ -126,7 +152,7 @@ hitInfo traceRay(Ray ray)
for (int i = 0; i < 10; i++) // portal ray
{
hitBVH = traceBVH(ray);
hitBVH = traverseBVHs(ray);
hitScene = traceScene(ray);
hit = hitBVH.t < hitScene.t ? hitBVH : hitScene;