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-rwxr-xr-xtraining/train_cnn.py8
1 files changed, 4 insertions, 4 deletions
diff --git a/training/train_cnn.py b/training/train_cnn.py
index e1fd27b..dc14192 100755
--- a/training/train_cnn.py
+++ b/training/train_cnn.py
@@ -335,8 +335,8 @@ def generate_layer_shader(output_path, num_layers, kernel_sizes):
f.write(f" }}\n")
else:
f.write(f" else if (params.layer_index == {layer_idx}) {{\n")
- f.write(f" let gray_out = {conv_fn}(txt, smplr, uv, uniforms.resolution, gray, weights_layer{layer_idx});\n")
- f.write(f" // gray_out in [0,1] (sigmoid activation)\n")
+ f.write(f" let sum = {conv_fn}(txt, smplr, uv, uniforms.resolution, gray, weights_layer{layer_idx});\n")
+ f.write(f" let gray_out = 1.0 / (1.0 + exp(-sum)); // Sigmoid activation\n")
f.write(f" result = vec4<f32>(gray_out, gray_out, gray_out, 1.0);\n")
f.write(f" return mix(original_raw, result, params.blend_amount); // [0,1]\n")
f.write(f" }}\n")
@@ -452,7 +452,7 @@ def generate_conv_final_function(kernel_size, output_path):
with open(output_path, 'a') as f:
f.write(f"\n// Final layer: 7→1 channel (vec4-optimized)\n")
f.write(f"// Assumes 'tex' is already normalized to [-1,1]\n")
- f.write(f"// Output uses sigmoid activation to match PyTorch training\n")
+ f.write(f"// Returns raw sum (activation applied at call site)\n")
f.write(f"fn cnn_conv{k}x{k}_7to1(\n")
f.write(f" tex: texture_2d<f32>,\n")
f.write(f" samp: sampler,\n")
@@ -479,7 +479,7 @@ def generate_conv_final_function(kernel_size, output_path):
f.write(f" }}\n")
f.write(f" }}\n\n")
- f.write(f" return 1.0 / (1.0 + exp(-sum));\n")
+ f.write(f" return sum;\n")
f.write(f"}}\n")