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add chromatic version of fast crt shader + auto crt shader

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This commit is contained in:
Dennis Ranke
2022-07-21 23:03:52 +02:00
parent 1f5042059c
commit e4579d81bc
5 changed files with 84 additions and 10 deletions
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20
uw8-window/src/gpu/fast_crt.wgsl
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@@ -34,10 +34,9 @@ fn col_factor(offset: f32) -> f32 {
return 1.0 / (1.0 + offset * offset * 16.0);
}
@fragment
fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
let base = round(in.tex_coords) - vec2<f32>(0.5);
let frac = in.tex_coords - base;
fn sample_screen(tex_coords: vec2<f32>) -> vec4<f32> {
let base = round(tex_coords) - vec2<f32>(0.5);
let frac = tex_coords - base;
let top_factor = row_factor(frac.y);
let bottom_factor = row_factor(frac.y - 1.0);
@@ -52,3 +51,16 @@ fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
return textureSample(screen_texture, linear_sampler, vec2<f32>(u, v) / vec2<f32>(320.0, 240.0)) * (top_factor + bottom_factor) * (left_factor + right_factor) * 1.1;
}
@fragment
fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
return sample_screen(in.tex_coords);
}
@fragment
fn fs_main_chromatic(in: VertexOutput) -> @location(0) vec4<f32> {
let r = sample_screen(in.tex_coords + vec2<f32>(0.2, 0.2)).r;
let g = sample_screen(in.tex_coords + vec2<f32>(0.07, -0.27)).g;
let b = sample_screen(in.tex_coords + vec2<f32>(-0.27, 0.07)).b;
return vec4<f32>(r, g, b, 1.0);
}