89 lines
2.8 KiB
Python
89 lines
2.8 KiB
Python
# This file was originally part of the KDE Shader Wallpaper Project
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# it contains modifications from Neil Panda and myself
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import os
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import re
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import shutil
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# Specify the directory where your .frag files are located
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source_directory = 'src'
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output_directory = 'processed'
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# List of variables to update
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variables_to_update = [
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'iTime', 'iTimeDelta', 'iFrameRate', 'iSampleRate',
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'iFrame', 'iDate', 'iMouse', 'iResolution',
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r'iChannelTime', r'iChannelResolution'
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]
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# Header to be prepended to the shader file
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header = '''#version 450
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layout(location = 0) in vec2 qt_TexCoord0;
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layout(location = 0) out vec4 fragColor;
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layout(std140, binding = 0) uniform buf {
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mat4 qt_Matrix;
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float qt_Opacity;
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float iTime;
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float iTimeDelta;
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float iFrameRate;
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float iSampleRate;
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int iFrame;
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vec4 iDate;
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vec4 iMouse;
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vec3 iResolution;
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float iChannelTime[4];
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vec3 iChannelResolution[4];
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} ubuf;
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layout(binding = 1) uniform sampler2D iChannel0;
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layout(binding = 2) uniform sampler2D iChannel1;
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layout(binding = 3) uniform sampler2D iChannel2;
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layout(binding = 4) uniform sampler2D iChannel3;
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vec2 fragCoord = vec2(qt_TexCoord0.x, 1.0 - qt_TexCoord0.y) * ubuf.iResolution.xy;
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'''
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# Footer to be appended, containing the main entry point
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footer = '''
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void main() {
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vec4 color = vec4(0.0);
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mainImage(color, fragCoord);
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fragColor = color;
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}
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'''
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for root, dirs, files in os.walk(source_directory):
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for file in files:
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if file.endswith('.frag'):
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file_path = os.path.join(root, file)
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with open(file_path, 'r', encoding='utf-8') as f:
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content = f.read()
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# 1. Remove any existing #version directive to avoid conflicts
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content = re.sub(r'^\s*#version\s+.*?\n', '', content, flags=re.MULTILINE)
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# 2. Remove any pre-existing main() function
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content = re.sub(r'void\s+main\s*\([^)]*\)\s*\{[\s\S]*?\}', '', content)
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# 3. Prepend 'ubuf.' to all shadertoy uniforms
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for var in variables_to_update:
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pattern = r'(?<!\.)\b' + var + r'\b'
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replacement = 'ubuf.' + var
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content = re.sub(pattern, replacement, content)
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# 4. Assemble the final, complete shader
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final_content = header + '\n' + content.strip() + '\n' + footer
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# Construct new output path
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relative_path = os.path.relpath(root, source_directory)
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new_root = os.path.join(output_directory, relative_path)
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os.makedirs(new_root, exist_ok=True)
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new_file_path = os.path.join(new_root, file)
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# Write to the new file
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with open(new_file_path, 'w', encoding='utf-8') as f:
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f.write(final_content)
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