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More code is vectorized, got slower, sad :'(

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Krzosa Karol
2022-07-01 13:46:46 +02:00
parent 65553044b8
commit d6caf62ced
3 changed files with 69 additions and 67 deletions
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129
main.cpp
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@@ -362,76 +362,77 @@ void draw_triangle_nearest(Bitmap* dst, F32 *depth_buffer, Bitmap *src, Vec3 lig
// @Note: We could do: interpolated_w = 1.f / interpolated_w to get proper depth
// but why waste an instruction, the smaller the depth value the farther the object
interpolated_w = vec8(1.f / p0.w) * w0 + vec8(1.f / p1.w) * w1 + vec8(1.f / p2.w) * w2;
// Vec8 *depth = (Vec8 *)(depth_buffer + (x8 + y * dst->x));
// should_fill = should_fill & (*depth < interpolated_w);
F32 *depth_pointer = (depth_buffer + (x8 + y * dst->x));
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));
u = vec8(tex0.x) * invw0 + vec8(tex1.x) * invw1 + vec8(tex2.x) * invw2;
v = vec8(tex0.y) * invw0 + vec8(tex1.y) * invw1 + vec8(tex2.y) * invw2;
for(S64 i = 0; i < 8; i++){
if (should_fill[i]){
PROFILE_SCOPE(fill_triangle_after_depth_test);
depth_pointer[i] = interpolated_w[i];
F32* depth = depth_buffer + (x[i] + y * dst->x);
if (*depth < interpolated_w[i]) {
PROFILE_SCOPE(fill_triangle_after_depth_test);
*depth = interpolated_w[i];
invw0[i] = (w0[i] / p0.w);
invw1[i] = (w1[i] / p1.w);
invw2[i] = (w2[i] / p2.w);
// Vec3 norm = (norm0 * invw0[i] + norm1 * invw1[i] + norm2 * invw2[i]) / interpolated_w[i];
// Vec3 norm = (norm0 * invw0[i] + norm1 * invw1[i] + norm2 * invw2[i]) / interpolated_w[i];
u[i] = tex0.x * invw0[i] + tex1.x * invw1[i] + tex2.x * invw2[i];
v[i] = tex0.y * invw0[i] + tex1.y * invw1[i] + tex2.y * invw2[i];
{
u[i] /= interpolated_w[i];
v[i] /= interpolated_w[i];
u[i] = u[i] - floor(u[i]);
v[i] = v[i] - floor(v[i]);
u[i] = u[i] * (src->x - 1);
v[i] = v[i] * (src->y - 1);
}
ui[i] = (S64)(u[i]);
vi[i] = (S64)(v[i]);
//F32 udiff = u - (F32)ui;
//F32 vdiff = v - (F32)vi;
// Origin UV (0,0) is in bottom left
U32 *dst_pixel = destination + x[i];
U32 *pixel = src->pixels + (ui[i] + (src->y - 1ll - vi[i]) * src->x);
Vec4 result_color; {
U32 c = *pixel;
F32 a = ((c & 0xff000000) >> 24) / 255.f;
F32 b = ((c & 0x00ff0000) >> 16) / 255.f;
F32 g = ((c & 0x0000ff00) >> 8) / 255.f;
F32 r = ((c & 0x000000ff) >> 0) / 255.f;
r*=r;
g*=g;
b*=b;
result_color = { r,g,b,a };
}
Vec4 dst_color; {
U32 c = *dst_pixel;
F32 a = ((c & 0xff000000) >> 24) / 255.f;
F32 b = ((c & 0x00ff0000) >> 16) / 255.f;
F32 g = ((c & 0x0000ff00) >> 8) / 255.f;
F32 r = ((c & 0x000000ff) >> 0) / 255.f;
r*=r; g*=g; b*=b;
dst_color = { r,g,b,a };
}
#if 0
Vec3 light_color = vec3(0.8,0.8,1);
constexpr F32 ambient_strength = 0.1f; {
Vec3 ambient = ambient_strength * light_color;
Vec3 diffuse = clamp_bot(0.f, -dot(norm, light_direction)) * light_color;
result_color.rgb *= (ambient+diffuse);
}
#endif
result_color = premultiplied_alpha(dst_color, result_color);
result_color = almost_linear_to_srgb(result_color);
U32 color32 = vec4_to_u32abgr(result_color);
*dst_pixel = color32;
{
u[i] /= interpolated_w[i];
v[i] /= interpolated_w[i];
u[i] = u[i] - floor(u[i]);
v[i] = v[i] - floor(v[i]);
u[i] = u[i] * (src->x - 1);
v[i] = v[i] * (src->y - 1);
}
ui[i] = (S64)(u[i]);
vi[i] = (S64)(v[i]);
//F32 udiff = u - (F32)ui;
//F32 vdiff = v - (F32)vi;
// Origin UV (0,0) is in bottom left
U32 *dst_pixel = destination + x[i];
U32 *pixel = src->pixels + (ui[i] + (src->y - 1ll - vi[i]) * src->x);
Vec4 result_color; {
U32 c = *pixel;
F32 a = ((c & 0xff000000) >> 24) / 255.f;
F32 b = ((c & 0x00ff0000) >> 16) / 255.f;
F32 g = ((c & 0x0000ff00) >> 8) / 255.f;
F32 r = ((c & 0x000000ff) >> 0) / 255.f;
r*=r;
g*=g;
b*=b;
result_color = { r,g,b,a };
}
Vec4 dst_color; {
U32 c = *dst_pixel;
F32 a = ((c & 0xff000000) >> 24) / 255.f;
F32 b = ((c & 0x00ff0000) >> 16) / 255.f;
F32 g = ((c & 0x0000ff00) >> 8) / 255.f;
F32 r = ((c & 0x000000ff) >> 0) / 255.f;
r*=r; g*=g; b*=b;
dst_color = { r,g,b,a };
}
#if 0
Vec3 light_color = vec3(0.8,0.8,1);
constexpr F32 ambient_strength = 0.1f; {
Vec3 ambient = ambient_strength * light_color;
Vec3 diffuse = clamp_bot(0.f, -dot(norm, light_direction)) * light_color;
result_color.rgb *= (ambient+diffuse);
}
#endif
result_color = premultiplied_alpha(dst_color, result_color);
result_color = almost_linear_to_srgb(result_color);
U32 color32 = vec4_to_u32abgr(result_color);
*dst_pixel = color32;
}
}