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Pack attributes slightly

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This commit is contained in:
grovesNL 2022-05-09 11:52:38 -02:30
parent f5648e0f94
commit 195374c716
3 changed files with 62 additions and 50 deletions
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41
src/shader.wgsl
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@ -1,7 +1,15 @@
struct VertexInput {
@builtin(vertex_index) vertex_idx: u32,
@location(0) pos: vec2<u32>,
@location(1) dim: u32,
@location(2) uv: u32,
@location(3) color: u32,
}
struct VertexOutput {
@builtin(position) position: vec4<f32>,
@location(0) color: vec4<f32>,
@location(1) tex_coords: vec2<f32>,
@location(1) uv: vec2<f32>,
};
struct Params {
@ -18,17 +26,15 @@ var atlas_texture: texture_2d<f32>;
var atlas_sampler: sampler;
@vertex
fn vs_main(@builtin(vertex_index) vertex_idx: u32, @location(0) in_vert: vec4<f32>, @location(1) tex_coords: vec2<f32>, @location(2) color: u32) -> VertexOutput {
let width = in_vert.z;
let height = in_vert.w;
let v = vertex_idx % 4u;
var pos = in_vert.xy;
var uv = tex_coords;
fn vs_main(in_vert: VertexInput) -> VertexOutput {
var pos = in_vert.pos;
let width = in_vert.dim & 0xffffu;
let height = (in_vert.dim & 0xffff0000u) >> 16u;
let color = in_vert.color;
var uv = vec2<u32>(in_vert.uv & 0xffffu, (in_vert.uv & 0xffff0000u) >> 16u);
let v = in_vert.vertex_idx % 4u;
switch v {
case 0u: {
}
case 1u: {
pos.x += width;
uv.x += width;
@ -46,12 +52,15 @@ fn vs_main(@builtin(vertex_index) vertex_idx: u32, @location(0) in_vert: vec4<f3
default: {}
}
pos = 2.0 * pos / vec2<f32>(params.screen_resolution) - 1.0;
pos.y *= -1.0;
var vert_output: VertexOutput;
vert_output.position = vec4<f32>(pos.xy, 0.0, 1.0);
vert_output.position = vec4<f32>(
2.0 * vec2<f32>(pos) / vec2<f32>(params.screen_resolution) - 1.0,
0.0,
1.0,
);
vert_output.position.y *= -1.0;
vert_output.color = vec4<f32>(
f32((color & 0xffu)),
@ -60,12 +69,12 @@ fn vs_main(@builtin(vertex_index) vertex_idx: u32, @location(0) in_vert: vec4<f3
f32((color & 0xff000000u) >> 24u),
) / 255.0;
vert_output.tex_coords = uv / vec2<f32>(textureDimensions(atlas_texture).xy);
vert_output.uv = vec2<f32>(uv) / vec2<f32>(textureDimensions(atlas_texture).xy);
return vert_output;
}
@fragment
fn fs_main(in_frag: VertexOutput) -> @location(0) vec4<f32> {
return in_frag.color * textureSample(atlas_texture, atlas_sampler, in_frag.tex_coords).x;
return in_frag.color * textureSample(atlas_texture, atlas_sampler, in_frag.uv).x;
}