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38 lines
978 B
38 lines
978 B
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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 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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