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[ET-VK] De vectorise all vectors in conv2d pw shader to improve perf. #11136

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Merged
merged 6 commits into from
May 28, 2025
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[ET-VK] De vectorise all vectors in conv2d pw shader to improve perf. #11136

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[ET-VK] De vectorise all vectors in conv2d pw shader to improve perf.
trivedivivek May 27, 2025
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Update on "[ET-VK] De vectorise all vectors in conv2d pw shader to im…
trivedivivek May 27, 2025
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Update on "[ET-VK] De vectorise all vectors in conv2d pw shader to im…
trivedivivek May 27, 2025
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Update on "[ET-VK] De vectorise all vectors in conv2d pw shader to im…
trivedivivek May 28, 2025
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Update on "[ET-VK] De vectorise all vectors in conv2d pw shader to im…
trivedivivek May 28, 2025
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Update on "[ET-VK] De vectorise all vectors in conv2d pw shader to im…
trivedivivek May 28, 2025
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21 changes: 9 additions & 12 deletions backends/vulkan/runtime/graph/ops/glsl/conv2d_pw.glsl
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Original file line number Diff line number Diff line change
Expand Up @@ -46,17 +46,14 @@ layout(local_size_x_id = 0, local_size_y_id = 1, local_size_z_id = 2) in;
* size is only 1x1, making it easier to re-use loaded texels from t_kernel.
*/
void main() {
const ivec2 out_limits_scaled = (out_limits.xy + ivec2(TILE_SIZE_X - 1, TILE_SIZE_Y - 1)) / ivec2(TILE_SIZE_X, TILE_SIZE_Y);
const int out_limits_scaled[2] = {out_limits.x + (TILE_SIZE_X - 1) * TILE_SIZE_X, out_limits.y + (TILE_SIZE_Y - 1) * TILE_SIZE_Y};

const uint div_by_x = gl_GlobalInvocationID.x / out_limits_scaled.x;
const ivec3 gpos = ivec3(
gl_GlobalInvocationID.x % out_limits_scaled.x,
div_by_x,
gl_GlobalInvocationID.y);
const int div_by_x = int(gl_GlobalInvocationID.x / out_limits_scaled[0]);
const int out_pos[3] = {int(gl_GlobalInvocationID.x % out_limits_scaled[0]), div_by_x, int(gl_GlobalInvocationID.y)};

// If the top left position is out of bounds, then this invocation will have
// no work to do.
if (gpos.y >= out_limits_scaled.y || gpos.z >= out_limits.z) {
if (out_pos[1] >= out_limits_scaled[1] || out_pos[2] >= out_limits.z) {
return;
}

Expand All @@ -69,8 +66,8 @@ void main() {
int pos[TILE_SIZE_X * TILE_SIZE_Y * 2];
for (int y = 0, i = 0; y < TILE_SIZE_Y; ++y) {
for (int x = 0; x < TILE_SIZE_X; ++x) {
pos[i * 2] = gpos.x * TILE_SIZE_X + x;
pos[i * 2 + 1] = gpos.y * TILE_SIZE_Y + y;
pos[i * 2] = out_pos[0] * TILE_SIZE_X + x;
pos[i * 2 + 1] = out_pos[1] * TILE_SIZE_Y + y;
i++;
}
}
Expand All @@ -88,7 +85,7 @@ void main() {
// Tuple of consecutive 4 elements represents a single output texel.
float sum[TILE_SIZE_X * TILE_SIZE_Y * 4];

const vec4 bias = texelFetch(t_bias, ivec2(gpos.z, 0), 0);
const vec4 bias = texelFetch(t_bias, ivec2(out_pos[2], 0), 0);

// Initialize the output array with the bias value
for (int i = 0; i < TILE_SIZE_X * TILE_SIZE_Y * 4; i += 4) {
Expand All @@ -108,7 +105,7 @@ void main() {

// Load kernel values from texels to array
[[unroll]] for (int i = 0; i < 4; ++i) {
const vec4 k_tex = texelFetch(t_kernel, ivec2(z + i, gpos.z), 0);
const vec4 k_tex = texelFetch(t_kernel, ivec2(z + i, out_pos[2]), 0);
kernel_values[i * 4 + 0] = k_tex.x;
kernel_values[i * 4 + 1] = k_tex.y;
kernel_values[i * 4 + 2] = k_tex.z;
Expand Down Expand Up @@ -167,7 +164,7 @@ void main() {
}

for (int i = 0; i < TILE_SIZE_X * TILE_SIZE_Y; ++i) {
const ivec3 pos_l = ivec3(pos[i * 2], pos[i * 2 + 1], gpos.z);
const ivec3 pos_l = ivec3(pos[i * 2], pos[i * 2 + 1], out_pos[2]);
if (all(lessThan(pos_l, out_limits.xyz))) {
imageStore(t_out, pos_l, op(vec4(sum[i * 4], sum[i * 4 + 1], sum[i * 4 + 2], sum[i * 4 + 3]), out_min, out_max));
}
Expand Down
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