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Calculating color W - I - D - E

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Krzosa Karol
2022-07-04 16:44:22 +02:00
parent df4f010554
commit f9da64a6c9
2 changed files with 67 additions and 46 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 -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 -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

111
main.cpp
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@@ -396,56 +396,77 @@ void draw_triangle_nearest(Bitmap* dst, F32 *depth_buffer, Bitmap *src, Vec3 lig
indices.simd = _mm256_min_epi32(_mm256_set1_ps(size), indices.simd);
indices.simd = _mm256_max_epi32(_mm256_set1_ps(0), indices.simd);
U32 pixel[8] = {};
if(should_fill[0]) pixel[0] = src->pixels[indices.e[0]];
if(should_fill[1]) pixel[1] = src->pixels[indices.e[1]];
if(should_fill[2]) pixel[2] = src->pixels[indices.e[2]];
if(should_fill[3]) pixel[3] = src->pixels[indices.e[3]];
if(should_fill[4]) pixel[4] = src->pixels[indices.e[4]];
if(should_fill[5]) pixel[5] = src->pixels[indices.e[5]];
if(should_fill[6]) pixel[6] = src->pixels[indices.e[6]];
if(should_fill[7]) pixel[7] = src->pixels[indices.e[7]];
// Vec8I *pixelv = (Vec8I *)pixel;
//
// Fetch and calculate texel values
//
Vec8I pixel;
if(should_fill[0]) pixel.e[0] = src->pixels[indices.e[0]];
if(should_fill[1]) pixel.e[1] = src->pixels[indices.e[1]];
if(should_fill[2]) pixel.e[2] = src->pixels[indices.e[2]];
if(should_fill[3]) pixel.e[3] = src->pixels[indices.e[3]];
if(should_fill[4]) pixel.e[4] = src->pixels[indices.e[4]];
if(should_fill[5]) pixel.e[5] = src->pixels[indices.e[5]];
if(should_fill[6]) pixel.e[6] = src->pixels[indices.e[6]];
if(should_fill[7]) pixel.e[7] = src->pixels[indices.e[7]];
// Vec8I texel_i_a = *pixelv & vec8i(0xff000000);
// Vec8I texel_i_b = *pixelv & vec8i(0x00ff0000);
// Vec8I texel_i_g = *pixelv & vec8i(0x0000ff00);
// Vec8I texel_i_r = *pixelv & vec8i(0x000000ff);
Vec8I texel_i_a = pixel & vec8i(0xff000000);
Vec8I texel_i_b = pixel & vec8i(0x00ff0000);
Vec8I texel_i_g = pixel & vec8i(0x0000ff00);
Vec8I texel_i_r = pixel & vec8i(0x000000ff);
// Vec8 texel_a = convert_vec8i_to_vec8(texel_i_a >> 24) / vec8(255.f);
// Vec8 texel_b = convert_vec8i_to_vec8(texel_i_b >> 16) / vec8(255.f);
// Vec8 texel_g = convert_vec8i_to_vec8(texel_i_g >> 8 ) / vec8(255.f);
// Vec8 texel_r = convert_vec8i_to_vec8(texel_i_r >> 0 ) / vec8(255.f);
// Alpha is done this way because signed integer shift is weird
// When sign bit is set it sets all bits that we shift the sign through
// So first we shift
texel_i_a = (texel_i_a >> 24);
texel_i_a = texel_i_a & vec8i(0x000000ff);
texel_i_b = (texel_i_b >> 16);
texel_i_g = (texel_i_g >> 8 );
texel_i_r = (texel_i_r >> 0 );
// texel_r = texel_r * texel_r;
// texel_g = texel_g * texel_g;
// texel_b = texel_b * texel_b;
Vec8 texel_a = convert_vec8i_to_vec8(texel_i_a);
Vec8 texel_b = convert_vec8i_to_vec8(texel_i_b);
Vec8 texel_g = convert_vec8i_to_vec8(texel_i_g);
Vec8 texel_r = convert_vec8i_to_vec8(texel_i_r);
Vec8 v255 = vec8(255.f);
texel_a = texel_a / v255;
texel_b = texel_b / v255;
texel_g = texel_g / v255;
texel_r = texel_r / v255;
texel_r = texel_r * texel_r;
texel_g = texel_g * texel_g;
texel_b = texel_b * texel_b;
//
// Fetch and calculate dst pixels
//
U32 *dst_memory = destination + x8;
Vec8I dst_pixel = {_mm256_maskload_epi32((const int *)dst_memory, should_fill.simd)};
Vec8I dst_i_a = dst_pixel & vec8i(0xff000000);
Vec8I dst_i_b = dst_pixel & vec8i(0x00ff0000);
Vec8I dst_i_g = dst_pixel & vec8i(0x0000ff00);
Vec8I dst_i_r = dst_pixel & vec8i(0x000000ff);
dst_i_a = dst_i_a >> 24;
dst_i_a = dst_i_a & vec8i(0x000000ff);
dst_i_b = dst_i_b >> 16 ;
dst_i_g = dst_i_g >> 8;
Vec8 dst_a = convert_vec8i_to_vec8(dst_i_a) / vec8(255);
Vec8 dst_b = convert_vec8i_to_vec8(dst_i_b) / vec8(255);
Vec8 dst_g = convert_vec8i_to_vec8(dst_i_g) / vec8(255);
Vec8 dst_r = convert_vec8i_to_vec8(dst_i_r) / vec8(255);
dst_r *= dst_r;
dst_g *= dst_g;
dst_b *= dst_b;
U32 *dst_pixel = destination + x8;
for(S64 i = 0; i < 8; i++){
if (should_fill[i]){
Vec4 result_color;// = {texel_r[i], texel_g[i], texel_b[i], texel_a[i]};
{
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;
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[i];
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 };
}
Vec4 result_color = {texel_r[i], texel_g[i], texel_b[i], texel_a[i]};
Vec4 dst_color = {dst_r[i], dst_g[i], dst_b[i], dst_a[i]};
#if 0
Vec3 light_color = vec3(0.8,0.8,1);
@@ -480,7 +501,7 @@ void draw_triangle_nearest(Bitmap* dst, F32 *depth_buffer, Bitmap *src, Vec3 lig
color32 = (U32)(alpha << 24 | blue << 16 | green << 8 | red << 0);
}
dst_pixel[i] = color32;
dst_memory[i] = color32;
}
}