krzosa/software_rasterizer
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Inlining a bunch of routines

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Krzosa Karol
2022-07-01 15:31:43 +02:00
parent 88652d40d6
commit c773d5ad3d
2 changed files with 32 additions and 16 deletions
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2
build.bat
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@@ -6,4 +6,4 @@ rem assets.exe
rem tracy/TracyClient.cpp -DTRACY_ENABLE
clang main.cpp -O2 -mavx2 -Wall -Wno-unused-function -Wno-missing-braces -fno-exceptions -fdiagnostics-absolute-paths -g -I".." -o main.exe -Wl,user32.lib -Wl,optick\lib\x64\release\OptickCore.lib
clang main.cpp -mavx2 -Wall -Wno-unused-function -Wno-missing-braces -fno-exceptions -fdiagnostics-absolute-paths -g -I".." -o main.exe -Wl,user32.lib -Wl,optick\lib\x64\release\OptickCore.lib

46
main.cpp
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@@ -326,10 +326,6 @@ void draw_triangle_nearest(Bitmap* dst, F32 *depth_buffer, Bitmap *src, Vec3 lig
F32 Cy1 = dy21 * min_x - dx21 * min_y - C1;
F32 Cy2 = dy02 * min_x - dx02 * min_y - C2;
Vec8 Cx0;
Vec8 Cx1;
Vec8 Cx2;
Vec8I var07i = vec8i(0,1,2,3,4,5,6,7);
Vec8 var07 = vec8(0,1,2,3,4,5,6,7);
Vec8 Dy10 = vec8(dy10) * var07;
@@ -342,9 +338,9 @@ void draw_triangle_nearest(Bitmap* dst, F32 *depth_buffer, Bitmap *src, Vec3 lig
F32 area = (p1.y - p0.y) * (p2.x - p0.x) - (p1.x - p0.x) * (p2.y - p0.y);
Vec8 area8 = vec8(area);
for (S64 y = min_y; y < max_y; y++) {
Cx0 = vec8(Cy0);
Cx1 = vec8(Cy1);
Cx2 = vec8(Cy2);
Vec8 Cx0 = vec8(Cy0);
Vec8 Cx1 = vec8(Cy1);
Vec8 Cx2 = vec8(Cy2);
for (S64 x8 = min_x; x8 < max_x; x8+=8) {
PROFILE_SCOPE(fill_triangle_outer);
@@ -353,7 +349,6 @@ void draw_triangle_nearest(Bitmap* dst, F32 *depth_buffer, Bitmap *src, Vec3 lig
Cx2 = vec8(Cx2[7]) + Dy02;
Vec8I x = vec8i(x8) + var07i;
should_fill = Cx0 >= vec8(0) & Cx1 >= vec8(0) & Cx2 >= vec8(0);
w0 = Cx1 / area8;
w1 = Cx2 / area8;
@@ -382,13 +377,14 @@ void draw_triangle_nearest(Bitmap* dst, F32 *depth_buffer, Bitmap *src, Vec3 lig
ui = convert_vec8_to_vec8i(u);
vi = convert_vec8_to_vec8i(v);
// Origin UV (0,0) is in bottom left
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];
// 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; {
@@ -404,7 +400,7 @@ void draw_triangle_nearest(Bitmap* dst, F32 *depth_buffer, Bitmap *src, Vec3 lig
}
Vec4 dst_color; {
U32 c = *dst_pixel;
U32 c = dst_pixel[i];
F32 a = ((c & 0xff000000) >> 24) / 255.f;
F32 b = ((c & 0x00ff0000) >> 16) / 255.f;
F32 g = ((c & 0x0000ff00) >> 8) / 255.f;
@@ -422,11 +418,31 @@ void draw_triangle_nearest(Bitmap* dst, F32 *depth_buffer, Bitmap *src, Vec3 lig
}
#endif
result_color = premultiplied_alpha(dst_color, result_color);
result_color = almost_linear_to_srgb(result_color);
U32 color32 = vec4_to_u32abgr(result_color);
// Premultiplied alpha
{
result_color.r = result_color.r + ((1-result_color.a) * dst_color.r);
result_color.g = result_color.g + ((1-result_color.a) * dst_color.g);
result_color.b = result_color.b + ((1-result_color.a) * dst_color.b);
result_color.a = result_color.a + dst_color.a - result_color.a*dst_color.a;
}
*dst_pixel = color32;
// Almost linear to srgb
{
result_color.r = sqrtf(result_color.r);
result_color.g = sqrtf(result_color.g);
result_color.b = sqrtf(result_color.b);
}
U32 color32;
{
U8 red = (U8)(result_color.r * 255);
U8 green = (U8)(result_color.g * 255);
U8 blue = (U8)(result_color.b * 255);
U8 alpha = (U8)(result_color.a * 255);
color32 = (U32)(alpha << 24 | blue << 16 | green << 8 | red << 0);
}
dst_pixel[i] = color32;
}
}