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85 lines
2.3 KiB
85 lines
2.3 KiB
// #define TEST
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#define X 95
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#define Y 22
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//#define USE_DBL
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#ifdef USE_DBL
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#define TYPE_FLT double
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#define TYPE_INT long
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#define MASK 0xFFFF
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#define SHIFT 16
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#define EPSILSON 4.94065645841247E-324
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#else
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#define TYPE_FLT float
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#define TYPE_INT int
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#define MASK 0x00FF
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#define SHIFT 8
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#define EPSILSON 1.401298E-45
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#endif
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constant sampler_t sampler = CLK_NORMALIZED_COORDS_FALSE |
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CLK_ADDRESS_CLAMP_TO_EDGE |
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CLK_FILTER_LINEAR;
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struct input {
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int persist;
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int mode;
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};
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TYPE_FLT read_data(image2d_t input_frame, int x, int z)
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{
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int2 gid = (int2)(x, z);
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uint4 pixel = read_imageui(input_frame, sampler, gid);
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TYPE_INT temp = (TYPE_INT)((TYPE_INT)pixel.x & MASK) |
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(TYPE_INT)(((TYPE_INT)pixel.y & MASK) << SHIFT) |
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(TYPE_INT)(((TYPE_INT)pixel.z & MASK) << (SHIFT * 2)) |
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(TYPE_INT)(((TYPE_INT)pixel.w & MASK) << (SHIFT * 3));
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TYPE_FLT raw_data = *((TYPE_FLT*)(&temp));
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return raw_data;
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}
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kernel void Persist(read_only image2d_t input_frame, read_write image2d_t output_frame, read_write image2d_t sum_frame, read_write image2d_t removed_frame, struct input params)
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{
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int2 gid = (int2)(get_global_id(0), get_global_id(1));
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TYPE_FLT input = read_data(input_frame, gid.x, gid.y);
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TYPE_FLT output_data = 0;
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TYPE_FLT sum = 0;
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if(params.mode == 0)
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{
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sum = input;
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}
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else if(params.mode == 1)
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{
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sum = read_data(sum_frame, gid.x, gid.y);
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sum += input;
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}
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else if(params.mode == 2)
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{
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sum = read_data(sum_frame, gid.x, gid.y);
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sub = read_data(removed_frame, gid.x, gid.y);
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sum = sum + input - sub;
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}
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output_data = sum / params.persist;
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TYPE_INT out = *((TYPE_INT*)(&output_data));
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uint4 pixel;
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pixel.x = (TYPE_INT)(out & MASK);
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pixel.y = (TYPE_INT)((out >> SHIFT) & MASK);
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pixel.z = (TYPE_INT)((out >> (SHIFT *2)) & MASK);
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pixel.w = (TYPE_INT)((out >> (SHIFT * 3)) & MASK);
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write_imageui(output_frame, gid, pixel);
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out = *((TYPE_INT*)(&sum));
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pixel.x = (TYPE_INT)(out & MASK);
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pixel.y = (TYPE_INT)((out >> SHIFT) & MASK);
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pixel.z = (TYPE_INT)((out >> (SHIFT *2)) & MASK);
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pixel.w = (TYPE_INT)((out >> (SHIFT * 3)) & MASK);
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write_imageui(sum_frame, gid, pixel);
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}
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