blob: 9c5ad0c37848fce8d5e9344098ca25e850d55316 [file] [log] [blame]
struct Uniforms {
dimAOuter : u32,
dimInner : u32,
dimBOuter : u32,
}
struct Matrix {
numbers : array<f32>,
}
@group(0) @binding(0) var<storage, read> firstMatrix : Matrix;
@group(0) @binding(1) var<storage, read> secondMatrix : Matrix;
@group(0) @binding(2) var<storage, write> resultMatrix : Matrix;
@group(0) @binding(3) var<uniform> uniforms : Uniforms;
fn mm_readA(row : u32, col : u32) -> f32 {
if (((row < uniforms.dimAOuter) && (col < uniforms.dimInner))) {
let result : f32 = firstMatrix.numbers[((row * uniforms.dimInner) + col)];
return result;
}
return 0.0;
}
fn mm_readB(row : u32, col : u32) -> f32 {
if (((row < uniforms.dimInner) && (col < uniforms.dimBOuter))) {
let result : f32 = secondMatrix.numbers[((row * uniforms.dimBOuter) + col)];
return result;
}
return 0.0;
}
fn mm_write(row : u32, col : u32, value : f32) {
if (((row < uniforms.dimAOuter) && (col < uniforms.dimBOuter))) {
let index : u32 = (col + (row * uniforms.dimBOuter));
resultMatrix.numbers[index] = value;
}
}
let RowPerThread : u32 = 4u;
let ColPerThread : u32 = 4u;
let TileAOuter : u32 = 64u;
let TileBOuter : u32 = 64u;
let TileInner : u32 = 64u;
var<workgroup> mm_Asub : array<array<f32, 64>, 64>;
var<workgroup> mm_Bsub : array<array<f32, 64>, 64>;
@stage(compute) @workgroup_size(16, 16, 1)
fn main(@builtin(local_invocation_id) local_id : vec3<u32>, @builtin(global_invocation_id) global_id : vec3<u32>) {
let tileRow : u32 = (local_id.y * RowPerThread);
let tileCol : u32 = (local_id.x * ColPerThread);
let globalRow : u32 = (global_id.y * RowPerThread);
let globalCol : u32 = (global_id.x * ColPerThread);
let numTiles : u32 = (((uniforms.dimInner - 1u) / TileInner) + 1u);
var acc : array<f32, 16>;
var ACached : f32;
var BCached : array<f32, 4>;
for(var index : u32 = 0u; (index < (RowPerThread * ColPerThread)); index = (index + 1u)) {
acc[index] = 0.0;
}
let ColPerThreadA : u32 = (TileInner / 16u);
let tileColA : u32 = (local_id.x * ColPerThreadA);
let RowPerThreadB : u32 = (TileInner / 16u);
let tileRowB : u32 = (local_id.y * RowPerThreadB);
for(var t : u32 = 0u; (t < numTiles); t = (t + 1u)) {
for(var innerRow : u32 = 0u; (innerRow < RowPerThread); innerRow = (innerRow + 1u)) {
for(var innerCol : u32 = 0u; (innerCol < ColPerThreadA); innerCol = (innerCol + 1u)) {
let inputRow : u32 = (tileRow + innerRow);
let inputCol : u32 = (tileColA + innerCol);
mm_Asub[inputRow][inputCol] = mm_readA((globalRow + innerRow), ((t * TileInner) + inputCol));
}
}
for(var innerRow : u32 = 0u; (innerRow < RowPerThreadB); innerRow = (innerRow + 1u)) {
for(var innerCol : u32 = 0u; (innerCol < ColPerThread); innerCol = (innerCol + 1u)) {
let inputRow : u32 = (tileRowB + innerRow);
let inputCol : u32 = (tileCol + innerCol);
mm_Bsub[innerCol][inputCol] = mm_readB(((t * TileInner) + inputRow), (globalCol + innerCol));
}
}
workgroupBarrier();
for(var k : u32 = 0u; (k < TileInner); k = (k + 1u)) {
for(var inner : u32 = 0u; (inner < ColPerThread); inner = (inner + 1u)) {
BCached[inner] = mm_Bsub[k][(tileCol + inner)];
}
for(var innerRow : u32 = 0u; (innerRow < RowPerThread); innerRow = (innerRow + 1u)) {
ACached = mm_Asub[(tileRow + innerRow)][k];
for(var innerCol : u32 = 0u; (innerCol < ColPerThread); innerCol = (innerCol + 1u)) {
let index : u32 = ((innerRow * ColPerThread) + innerCol);
acc[index] = (acc[index] + (ACached * BCached[innerCol]));
}
}
}
workgroupBarrier();
}
for(var innerRow : u32 = 0u; (innerRow < RowPerThread); innerRow = (innerRow + 1u)) {
for(var innerCol : u32 = 0u; (innerCol < ColPerThread); innerCol = (innerCol + 1u)) {
let index : u32 = ((innerRow * ColPerThread) + innerCol);
mm_write((globalRow + innerRow), (globalCol + innerCol), acc[index]);
}
}
}