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add more checks in triangle raster code

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asrael 2025-11-10 09:39:33 -06:00
parent 79a678f162
commit 9550d34e65
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GPG key ID: 2786557804DFAE24
7 changed files with 357 additions and 260 deletions
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27
src/pxl8_procgen.c
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@ -91,6 +91,21 @@ static void calculate_texture_axes(const pxl8_vec3 normal, pxl8_vec3* u_axis, px
}
}
static inline void compute_face_aabb(pxl8_bsp_face* face, const pxl8_bsp_vertex* verts, u32 vert_idx) {
face->aabb_min = (pxl8_vec3){1e30f, 1e30f, 1e30f};
face->aabb_max = (pxl8_vec3){-1e30f, -1e30f, -1e30f};
for (u32 i = 0; i < 4; i++) {
pxl8_vec3 v = verts[vert_idx + i].position;
if (v.x < face->aabb_min.x) face->aabb_min.x = v.x;
if (v.x > face->aabb_max.x) face->aabb_max.x = v.x;
if (v.y < face->aabb_min.y) face->aabb_min.y = v.y;
if (v.y > face->aabb_max.y) face->aabb_max.y = v.y;
if (v.z < face->aabb_min.z) face->aabb_min.z = v.z;
if (v.z > face->aabb_max.z) face->aabb_max.z = v.z;
}
}
static void cave_grid_initialize(cave_grid* grid, f32 density) {
for (i32 y = 0; y < grid->height; y++) {
for (i32 x = 0; x < grid->width; x++) {
@ -189,6 +204,8 @@ static pxl8_result cave_to_bsp(pxl8_bsp* bsp, const cave_grid* grid) {
bsp->surfedges[edge_idx + i] = edge_idx + i;
}
compute_face_aabb(&bsp->faces[face_idx], bsp->vertices, vert_idx);
vert_idx += 4;
edge_idx += 4;
face_idx++;
@ -220,6 +237,8 @@ static pxl8_result cave_to_bsp(pxl8_bsp* bsp, const cave_grid* grid) {
bsp->surfedges[edge_idx + i] = edge_idx + i;
}
compute_face_aabb(&bsp->faces[face_idx], bsp->vertices, vert_idx);
vert_idx += 4;
edge_idx += 4;
face_idx++;
@ -251,6 +270,8 @@ static pxl8_result cave_to_bsp(pxl8_bsp* bsp, const cave_grid* grid) {
bsp->surfedges[edge_idx + i] = edge_idx + i;
}
compute_face_aabb(&bsp->faces[face_idx], bsp->vertices, vert_idx);
vert_idx += 4;
edge_idx += 4;
face_idx++;
@ -282,6 +303,8 @@ static pxl8_result cave_to_bsp(pxl8_bsp* bsp, const cave_grid* grid) {
bsp->surfedges[edge_idx + i] = edge_idx + i;
}
compute_face_aabb(&bsp->faces[face_idx], bsp->vertices, vert_idx);
vert_idx += 4;
edge_idx += 4;
face_idx++;
@ -321,6 +344,8 @@ static pxl8_result cave_to_bsp(pxl8_bsp* bsp, const cave_grid* grid) {
bsp->surfedges[edge_idx + i] = edge_idx + i;
}
compute_face_aabb(&bsp->faces[face_idx], bsp->vertices, vert_idx);
vert_idx += 4;
edge_idx += 4;
face_idx++;
@ -350,6 +375,8 @@ static pxl8_result cave_to_bsp(pxl8_bsp* bsp, const cave_grid* grid) {
bsp->surfedges[edge_idx + i] = edge_idx + i;
}
compute_face_aabb(&bsp->faces[face_idx], bsp->vertices, vert_idx);
vert_idx += 4;
edge_idx += 4;
face_idx++;