| 37 | } |
| 38 | |
| 39 | getUserCode(): string { |
| 40 | const userCode = ` |
| 41 | ${main('index')} { |
| 42 | if (index < uniforms.size) { |
| 43 | let coords = getOutputCoords(); |
| 44 | let b = coords[0]; |
| 45 | let r = coords[1]; |
| 46 | let c = coords[2]; |
| 47 | |
| 48 | let MIN_DEPTH_BEGIN = 0; |
| 49 | let MAX_DEPTH_END = uniforms.outShape[3]; |
| 50 | var result = 0.0; |
| 51 | for (var d = MIN_DEPTH_BEGIN; d < MAX_DEPTH_END; d++) { |
| 52 | let depthBegin = max(MIN_DEPTH_BEGIN, d - uniforms.depthRadius); |
| 53 | let depthEnd = min(MAX_DEPTH_END, d + uniforms.depthRadius + 1); |
| 54 | |
| 55 | var norm = 0.0; |
| 56 | for (var k = MIN_DEPTH_BEGIN; k < MAX_DEPTH_END; k++) { |
| 57 | if (k < depthBegin) { |
| 58 | continue; |
| 59 | } else if (k >= depthBegin && k < depthEnd) { |
| 60 | norm += getInputImage(b, r, c, k) * getInputImage(b, r, c, k); |
| 61 | } else { |
| 62 | break; |
| 63 | } |
| 64 | } |
| 65 | |
| 66 | norm = uniforms.alpha * norm + uniforms.bias; |
| 67 | |
| 68 | for (var k = MIN_DEPTH_BEGIN; k < MAX_DEPTH_END; k++) { |
| 69 | if (k < depthBegin) { |
| 70 | continue; |
| 71 | } else if (k >= depthBegin && k < depthEnd) { |
| 72 | var dyi = -2.0 * uniforms.alpha * uniforms.beta |
| 73 | * getInputImage(b, r, c, k) * getOutputImage(b, r, c, d) / norm; |
| 74 | if (k == d) { |
| 75 | dyi += pow(norm, -1.0 * uniforms.beta); |
| 76 | } |
| 77 | if (k == coords[3]) { |
| 78 | dyi *= getDy(b, r, c, d); |
| 79 | result += dyi; |
| 80 | } |
| 81 | } else { |
| 82 | break; |
| 83 | } |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | setOutputAtIndex(index, result); |
| 88 | } |
| 89 | } |
| 90 | `; |
| 91 | return userCode; |
| 92 | } |
| 93 | } |