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restructuring for multiple filters

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This commit is contained in:
Dennis Ranke
2022-07-10 23:17:31 +02:00
parent c9c5cb76bd
commit 379ece5cbf
4 changed files with 163 additions and 106 deletions
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24
uw8-window/src/gpu/palette.wgsl Normal file
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@@ -0,0 +1,24 @@
struct VertexOutput {
@builtin(position) clip_position: vec4<f32>,
@location(0) tex_coords: vec2<f32>,
}
@vertex
fn vs_main(@builtin(vertex_index) vertex_index: u32) -> VertexOutput {
var out: VertexOutput;
let x = (1.0 - f32(vertex_index)) * 3.0;
let y = f32(vertex_index & 1u) * 3.0 - 1.0;
out.clip_position = vec4<f32>(x, y, 0.0, 1.0);
out.tex_coords = vec2<f32>((x + 1.0) * 160.0, (y + 1.0) * 120.0);
return out;
}
@group(0) @binding(0) var framebuffer_texture: texture_2d<u32>;
@group(0) @binding(1) var palette_texture: texture_1d<f32>;
@fragment
fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
let texel = vec2<i32>(floor(in.tex_coords));
let index = textureLoad(framebuffer_texture, texel, 0).r;
return textureLoad(palette_texture, i32(index), 0);
}