92 lines
2.4 KiB
Python
92 lines
2.4 KiB
Python
#!/usr/bin/python
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# Usage: 'python makevariants.py blender.shader.json'
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# Output: blender.vert/frag.glsl, blender_NormalMapping.vert/frag.glsl,...
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import sys
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import itertools
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import os
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import json
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# Create variations
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def writeFile(path, name, defs, lines):
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# with open('out/' + name, "w") as f:
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with open(path + '/' + name, "w") as f:
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# Write variation
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defs_written = False
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for line in lines:
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f.write(line + '\n')
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# Append defs after #version
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if defs_written == False and line.startswith('#version '):
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for d in defs:
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f.write('#define ' + d + '\n')
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defs_written = True
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def make(json_name, fp, defs=None):
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vert_shaders = []
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frag_shaders = []
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shader_names = []
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if defs != None:
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parse_defs = False
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else:
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parse_defs = True
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defs = []
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base_name = json_name.split('.', 1)[0]
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# Make out dir
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path = fp + '/compiled/Shaders/' + base_name
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if not os.path.exists(path):
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os.makedirs(path)
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# Open json file
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#json_file = open(sys.argv[1]).read()
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json_file = open(json_name).read()
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json_data = json.loads(json_file)
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# Go through every context shaders and gather ifdefs
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for c in json_data['contexts']:
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vs = open(c['vertex_shader']).read().splitlines()
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fs = open(c['fragment_shader']).read().splitlines()
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shader_names.append(c['vertex_shader'].split('.', 1)[0])
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vert_shaders.append(vs)
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frag_shaders.append(fs)
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if parse_defs == True:
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lines = vs + fs
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for line in lines:
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if line.startswith('#ifdef'):
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d = line.split(' ')[1]
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if d != 'GL_ES':
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defs.append(d)
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if parse_defs == True:
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# Merge duplicates and sort
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defs = sorted(list(set(defs)))
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for i in range(0, len(vert_shaders)):
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vert_lines = vert_shaders[i]
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frag_lines = frag_shaders[i]
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# Process #defines and output name + defines + (.vert/.frag).glsl
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for L in range(0, len(defs)+1):
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for subset in itertools.combinations(defs, L):
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shader_name = shader_names[i]
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for s in subset:
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shader_name += s
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writeFile(path, shader_name + '.vert.glsl', subset, vert_lines)
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writeFile(path, shader_name + '.frag.glsl', subset, frag_lines)
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# Defs specified
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else:
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for i in range(0, len(vert_shaders)):
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vert_lines = vert_shaders[i]
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frag_lines = frag_shaders[i]
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shader_name = shader_names[i]
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for s in defs:
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shader_name += s
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writeFile(path, shader_name + '.vert.glsl', defs, vert_lines)
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writeFile(path, shader_name + '.frag.glsl', defs, frag_lines)
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