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Optimize pyrUp_unrolled() by mad function.

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It could improve performance when image size is large.
E.g. OCL_PyrUpFixture_PyrUp.PyrUp/18
pull/3451/head
Yan Wang 10 years ago
parent 73ba435610
commit 6e7050555e
1 changed files with 15 additions and 15 deletions
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  1. 30
      modules/imgproc/src/opencl/pyr_up.cl

30
modules/imgproc/src/opencl/pyr_up.cl
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@ -165,27 +165,27 @@ __kernel void pyrUp_unrolled(__global const uchar * src, int src_step, int src_o
// (x,y)
sum = co3 * s_srcPatch[1 + (ly >> 1)][1 + ((lx - 2) >> 1)];
sum = sum + co1 * s_srcPatch[1 + (ly >> 1)][1 + ((lx ) >> 1)];
sum = sum + co3 * s_srcPatch[1 + (ly >> 1)][1 + ((lx + 2) >> 1)];
sum = mad(co1, s_srcPatch[1 + (ly >> 1)][1 + ((lx ) >> 1)], sum);
sum = mad(co3, s_srcPatch[1 + (ly >> 1)][1 + ((lx + 2) >> 1)], sum);
s_dstPatch[1 + get_local_id(1)][lx] = sum;
// (x+1,y)
sum = co2 * s_srcPatch[1 + (ly >> 1)][1 + ((lx + 1 - 1) >> 1)];
sum = sum + co2 * s_srcPatch[1 + (ly >> 1)][1 + ((lx + 1 + 1) >> 1)];
sum = mad(co2, s_srcPatch[1 + (ly >> 1)][1 + ((lx + 1 + 1) >> 1)], sum);
s_dstPatch[1 + get_local_id(1)][lx+1] = sum;
if (ly < 1)
{
// (x,y)
sum = co3 * s_srcPatch[0][1 + ((lx - 2) >> 1)];
sum = sum + co1 * s_srcPatch[0][1 + ((lx ) >> 1)];
sum = sum + co3 * s_srcPatch[0][1 + ((lx + 2) >> 1)];
sum = mad(co1, s_srcPatch[0][1 + ((lx ) >> 1)], sum);
sum = mad(co3, s_srcPatch[0][1 + ((lx + 2) >> 1)], sum);
s_dstPatch[0][lx] = sum;
// (x+1,y)
sum = co2 * s_srcPatch[0][1 + ((lx + 1 - 1) >> 1)];
sum = sum + co2 * s_srcPatch[0][1 + ((lx + 1 + 1) >> 1)];
sum = mad(co2, s_srcPatch[0][1 + ((lx + 1 + 1) >> 1)], sum);
s_dstPatch[0][lx+1] = sum;
}
@ -193,13 +193,13 @@ __kernel void pyrUp_unrolled(__global const uchar * src, int src_step, int src_o
{
// (x,y)
sum = co3 * s_srcPatch[LOCAL_SIZE+1][1 + ((lx - 2) >> 1)];
sum = sum + co1 * s_srcPatch[LOCAL_SIZE+1][1 + ((lx ) >> 1)];
sum = sum + co3 * s_srcPatch[LOCAL_SIZE+1][1 + ((lx + 2) >> 1)];
sum = mad(co1, s_srcPatch[LOCAL_SIZE+1][1 + ((lx ) >> 1)], sum);
sum = mad(co3, s_srcPatch[LOCAL_SIZE+1][1 + ((lx + 2) >> 1)], sum);
s_dstPatch[LOCAL_SIZE+1][lx] = sum;
// (x+1,y)
sum = co2 * s_srcPatch[LOCAL_SIZE+1][1 + ((lx + 1 - 1) >> 1)];
sum = sum + co2 * s_srcPatch[LOCAL_SIZE+1][1 + ((lx + 1 + 1) >> 1)];
sum = mad(co2, s_srcPatch[LOCAL_SIZE+1][1 + ((lx + 1 + 1) >> 1)], sum);
s_dstPatch[LOCAL_SIZE+1][lx+1] = sum;
}
@ -211,24 +211,24 @@ __kernel void pyrUp_unrolled(__global const uchar * src, int src_step, int src_o
{
// (x,y)
sum = co3 * s_dstPatch[1 + get_local_id(1) - 1][lx];
sum = sum + co1 * s_dstPatch[1 + get_local_id(1) ][lx];
sum = sum + co3 * s_dstPatch[1 + get_local_id(1) + 1][lx];
sum = mad(co1, s_dstPatch[1 + get_local_id(1) ][lx], sum);
sum = mad(co3, s_dstPatch[1 + get_local_id(1) + 1][lx], sum);
storepix(convertToT(sum), dstData + dst_y * dst_step + dst_x * PIXSIZE);
// (x+1,y)
sum = co3 * s_dstPatch[1 + get_local_id(1) - 1][lx+1];
sum = sum + co1 * s_dstPatch[1 + get_local_id(1) ][lx+1];
sum = sum + co3 * s_dstPatch[1 + get_local_id(1) + 1][lx+1];
sum = mad(co1, s_dstPatch[1 + get_local_id(1) ][lx+1], sum);
sum = mad(co3, s_dstPatch[1 + get_local_id(1) + 1][lx+1], sum);
storepix(convertToT(sum), dstData + dst_y * dst_step + (dst_x+1) * PIXSIZE);
// (x,y+1)
sum = co2 * s_dstPatch[1 + get_local_id(1) ][lx];
sum = sum + co2 * s_dstPatch[1 + get_local_id(1) + 1][lx];
sum = mad(co2, s_dstPatch[1 + get_local_id(1) + 1][lx], sum);
storepix(convertToT(sum), dstData + (dst_y+1) * dst_step + dst_x * PIXSIZE);
// (x+1,y+1)
sum = co2 * s_dstPatch[1 + get_local_id(1) ][lx+1];
sum = sum + co2 * s_dstPatch[1 + get_local_id(1) + 1][lx+1];
sum = mad(co2, s_dstPatch[1 + get_local_id(1) + 1][lx+1], sum);
storepix(convertToT(sum), dstData + (dst_y+1) * dst_step + (dst_x+1) * PIXSIZE);
}
}

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