diff options
Diffstat (limited to 'vgcodec/src/diff.wgsl')
| -rw-r--r-- | vgcodec/src/diff.wgsl | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/vgcodec/src/diff.wgsl b/vgcodec/src/diff.wgsl new file mode 100644 index 0000000..bb5a3e1 --- /dev/null +++ b/vgcodec/src/diff.wgsl @@ -0,0 +1,17 @@ +@group(0) @binding(0) +var tex_a: texture_2d<f32>; +@group(0) @binding(1) +var tex_b: texture_2d<f32>; + +@group(0) @binding(2) +var<storage, read_write> exp: atomic<u32>; + +@compute @workgroup_size(1) +fn main(@builtin(global_invocation_id) global_id: vec3<u32>) { + var col_a = textureLoad(tex_a, vec2(i32(global_id.x), i32(global_id.y)), 0); + var col_b = textureLoad(tex_b, vec2(i32(global_id.x), i32(global_id.y)), 0); + var diff = col_a - col_b; + var diffsum = diff.r + diff.g + diff.b; + atomicAdd(&exp, u32(diffsum)); +} + |