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[ET-VK] Reduced int precision for texture coordinates in conv2d_pw op, to reduce shader register pressure. #6766

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Nov 12, 2024
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[ET-VK] Reduced int precision for texture coordinates in conv2d_pw op, to reduce shader register pressure. #6766

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11 changes: 6 additions & 5 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 @@ -77,15 +77,16 @@ void main() {
sum[i] = sum[0];
}

int z4 = 0;
// Since the kernel is 1x1, we only have to loop over the depth dimension.
for (int z = 0, z4 = 0; z < in_group_size; z += 4, ++z4) {
for (uint16_t z = uint16_t(0); z < uint16_t(in_group_size); z += uint16_t(4), ++z4) {
// During prepacking, the weight tensor has been permuted so that the
// channel (IC) dim is along the x-axis, and the batch (OC) dim is along
// the z-axis.
const vec4 ktex_0 = texelFetch(t_kernel, u16vec2(z + 0, gpos.z), 0);
const vec4 ktex_1 = texelFetch(t_kernel, u16vec2(z + 1, gpos.z), 0);
const vec4 ktex_2 = texelFetch(t_kernel, u16vec2(z + 2, gpos.z), 0);
const vec4 ktex_3 = texelFetch(t_kernel, u16vec2(z + 3, gpos.z), 0);
const vec4 ktex_0 = texelFetchOffset(t_kernel, u16vec2(z, gpos.z), 0, u16vec2(0, 0));
const vec4 ktex_1 = texelFetchOffset(t_kernel, u16vec2(z, gpos.z), 0, u16vec2(1, 0));
const vec4 ktex_2 = texelFetchOffset(t_kernel, u16vec2(z, gpos.z), 0, u16vec2(2, 0));
const vec4 ktex_3 = texelFetchOffset(t_kernel, u16vec2(z, gpos.z), 0, u16vec2(3, 0));


#pragma unroll
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