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80 lines
2.1 KiB
80 lines
2.1 KiB
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kernel void initialize(size_t width, size_t height, write_only image2d_t output){
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size_t x = get_global_id(0);
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size_t y = get_global_id(1);
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int2 coord = {x, y};
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const float xx = x / float(width - 1) - 0.5;
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const float yy = y / float(height - 1) - 0.5;
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float4 color = {0.066 * xx, 0.1 * yy, 0.1 * yy * xx, 1};
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write_imagef(output, coord, color);
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}
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kernel void hblur(size_t width, size_t height, read_only image2d_t input, write_only image2d_t output){
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int x = get_global_id(0);
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int y = get_global_id(1);
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const sampler_t sampler = CLK_NORMALIZED_COORDS_FALSE
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| CLK_ADDRESS_NONE
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| CLK_FILTER_NEAREST;
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float4 c = {0, 0, 0, 0};
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const int size = 7;
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float weights[] = {0.25, 0.1, 0.1, 0.1, 0.1, 0.1, 0.25};
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for(int i = 0; i < size; ++i){
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int x2 = (x - size/2 + i + width) % width;
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int2 read = {x2, y};
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c += read_imagef(input, sampler, read) * weights[i];
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}
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int2 coord = {x, y};
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write_imagef(output, coord, c);
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}
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kernel void vblur(size_t width, size_t height, read_only image2d_t input, write_only image2d_t output){
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int x = get_global_id(0);
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int y = get_global_id(1);
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const sampler_t sampler = CLK_NORMALIZED_COORDS_FALSE
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| CLK_ADDRESS_NONE
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| CLK_FILTER_NEAREST;
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float4 c = {0, 0, 0, 0};
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int size = 7;
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float weights[] = {0.25, 0.1, 0.1, 0.1, 0.1, 0.1, 0.25};
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for(int i = 0; i < size; ++i){
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int y2 = (y - size/2 + i + height) % height;
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int2 read = {x, y2};
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c += read_imagef(input, sampler, read) * weights[i];
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}
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int2 coord = {x, y};
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write_imagef(output, coord, c);
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}
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kernel void update(size_t width, size_t height, read_only image2d_t input, write_only image2d_t output){
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size_t x = get_global_id(0);
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size_t y = get_global_id(1);
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int2 coord = {x, y};
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const sampler_t samplerA = CLK_NORMALIZED_COORDS_FALSE
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| CLK_ADDRESS_NONE
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| CLK_FILTER_NEAREST;
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const float4 w = read_imagef(input, samplerA, coord);
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float4 v = w;
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const float s = 9.120836;
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const float r = 32.799129;
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const float b = 2.902814;
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const float dt = 0.019997;
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v.x += dt * s * (w.y - w.x);
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v.y += dt * (w.x * (r - w.z) - w.y);
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v.z += dt * (w.x * w.y - b * w.z);
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write_imagef(output, coord, v);
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}
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