krzosa/software_rasterizer
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Tried to fix weird graphical glitches, thought it's overdraw but turns out it's not

Browse Source
This commit is contained in:
Krzosa Karol
2022-07-01 16:50:24 +02:00
parent c773d5ad3d
commit 345acba124
3 changed files with 34 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

34
main.cpp
View File

@@ -331,7 +331,7 @@ void draw_triangle_nearest(Bitmap* dst, F32 *depth_buffer, Bitmap *src, Vec3 lig
Vec8 Dy10 = vec8(dy10) * var07;
Vec8 Dy21 = vec8(dy21) * var07;
Vec8 Dy02 = vec8(dy02) * var07;
Vec8 w0, w1, w2, invw0, invw1, invw2, u, v, interpolated_w, should_fill;
Vec8 w0, w1, w2, invw0, invw1, invw2, u, v, interpolated_w;
Vec8I ui, vi;
U32 *destination = dst->pixels + dst->x*min_y;
@@ -349,7 +349,15 @@ void draw_triangle_nearest(Bitmap* dst, F32 *depth_buffer, Bitmap *src, Vec3 lig
Cx2 = vec8(Cx2[7]) + Dy02;
should_fill = Cx0 >= vec8(0) & Cx1 >= vec8(0) & Cx2 >= vec8(0);
Vec8 should_fill;
{
Vec8 a = (vec8(x8) + var07);
Vec8 b = vec8(max_x);
should_fill = a < b;
should_fill = should_fill & (Cx0 >= vec8(0) & Cx1 >= vec8(0) & Cx2 >= vec8(0));
}
w0 = Cx1 / area8;
w1 = Cx2 / area8;
w2 = Cx0 / area8;
@@ -362,6 +370,7 @@ void draw_triangle_nearest(Bitmap* dst, F32 *depth_buffer, Bitmap *src, Vec3 lig
Vec8 depth = loadu8(depth_pointer);
should_fill = should_fill & (depth < interpolated_w);
invw0 = (w0 / vec8(p0.w));
invw1 = (w1 / vec8(p1.w));
invw2 = (w2 / vec8(p2.w));
@@ -378,17 +387,26 @@ void draw_triangle_nearest(Bitmap* dst, F32 *depth_buffer, Bitmap *src, Vec3 lig
vi = convert_vec8_to_vec8i(v);
// Origin UV (0,0) is in bottom left
U32 *dst_pixel = destination + x8;
_mm256_maskstore_epi32((int *)depth_pointer, should_fill.simd, interpolated_w.simd);
Vec8I indices = ui + ((vec8i(src->y) - vec8i(1) - vi) * vec8i(src->x));
U32 *pixel[8] = {
src->pixels + indices.e[0],
src->pixels + indices.e[1],
src->pixels + indices.e[2],
src->pixels + indices.e[3],
src->pixels + indices.e[4],
src->pixels + indices.e[5],
src->pixels + indices.e[6],
src->pixels + indices.e[7],
};
U32 *dst_pixel = destination + x8;
for(S64 i = 0; i < 8; i++){
if (should_fill[i]){
PROFILE_SCOPE(fill_triangle_after_depth_test);
depth_pointer[i] = interpolated_w[i];
U32 *pixel = src->pixels + (ui[i] + (src->y - 1ll - vi[i]) * src->x);
Vec4 result_color; {
U32 c = *pixel;
U32 c = *pixel[i];
F32 a = ((c & 0xff000000) >> 24) / 255.f;
F32 b = ((c & 0x00ff0000) >> 16) / 255.f;
F32 g = ((c & 0x0000ff00) >> 8) / 255.f;
@@ -652,7 +670,7 @@ main(int argc, char **argv) {
os.window_size.y = 720;
os.window_resizable = 1;
assert(os_init());
Font font = os_load_font(os.perm_arena, 16, "Arial", 0);
Font font = os_load_font(os.perm_arena, 12*os.dpi_scale, "Arial", 0);
f22 = load_obj_dump(os.perm_arena, "plane.bin"_s);
sponza = load_obj_dump(os.perm_arena, "sponza.bin"_s);