mirror of
https://github.com/libretro/RetroArch
synced 2024-07-08 12:15:49 +00:00
Refactor cg2glsl.py.
This commit is contained in:
Felix Laurie von Massenbach
parent
da4cc54b8c
commit
f272431b5d
245
tools/cg2glsl.py
245
tools/cg2glsl.py
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@ -25,21 +25,18 @@ def log(*arg):
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print(*arg)
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def remove_comments(source_lines):
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ret = []
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killed_comments = [line.split('//')[0] for line in source_lines]
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for i in filter(lambda line: len(line) > 0, killed_comments):
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ret.append(i)
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return ret
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def keep_line_if(func, lines):
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ret = []
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for i in filter(func, lines):
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ret.append(i)
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for line in filter(func, lines):
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ret.append(line)
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return ret
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def remove_comments(source_lines):
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lines_without_comments = [line.split('//')[0] for line in source_lines]
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return keep_line_if(lambda line: line, lines_without_comments)
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def replace_global_in(source):
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split_source = source.split('\n')
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replace_table = [
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@ -53,45 +50,44 @@ def replace_global_in(source):
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for line in split_source:
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if ('//var' in line) or ('#var' in line):
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for index, replace in enumerate(replace_table):
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orig = line.split(' ')[2]
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orig = line.split()[2]
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if replace[0] == orig:
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replace_table[index] = (line.split(':')[2].split(' ')[1], replace_table[index][1])
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log('Replace globals:', replace_table)
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for replace in replace_table:
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if replace[0]:
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source = source.replace(replace[0], replace[1])
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for orig, new in replace_table:
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if orig:
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source = source.replace(orig, new)
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return source
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def replace_global_vertex(source):
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source = replace_global_in(source)
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replace_table = [
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('attribute', 'COMPAT_ATTRIBUTE'),
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('varying', 'COMPAT_VARYING'),
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('texture2D', 'COMPAT_TEXTURE'),
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('POSITION', 'VertexCoord'),
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('TEXCOORD1', 'LUTTexCoord'),
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('TEXCOORD0', 'TexCoord'),
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('TEXCOORD', 'TexCoord'),
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('uniform vec4 _modelViewProj1[4];', ''),
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('_modelViewProj1', 'MVPMatrix'),
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('_IN1._mvp_matrix[0]', 'MVPMatrix[0]'),
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('_IN1._mvp_matrix[1]', 'MVPMatrix[1]'),
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('_IN1._mvp_matrix[2]', 'MVPMatrix[2]'),
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('_IN1._mvp_matrix[3]', 'MVPMatrix[3]'),
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('attribute', 'COMPAT_ATTRIBUTE'),
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('varying', 'COMPAT_VARYING'),
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('texture2D', 'COMPAT_TEXTURE'),
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('POSITION', 'VertexCoord'),
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('TEXCOORD1', 'LUTTexCoord'),
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('TEXCOORD0', 'TexCoord'),
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('TEXCOORD', 'TexCoord'),
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('uniform vec4 _modelViewProj1[4];', ''),
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('_modelViewProj1', 'MVPMatrix'),
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('_IN1._mvp_matrix[0]', 'MVPMatrix[0]'),
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('_IN1._mvp_matrix[1]', 'MVPMatrix[1]'),
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('_IN1._mvp_matrix[2]', 'MVPMatrix[2]'),
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('_IN1._mvp_matrix[3]', 'MVPMatrix[3]'),
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('FrameCount', 'float(FrameCount)'),
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('FrameDirection', 'float(FrameDirection)'),
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('input', 'input_dummy'), # 'input' is reserved in GLSL.
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('output', 'output_dummy'), # 'output' is reserved in GLSL.
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('FrameCount', 'float(FrameCount)'),
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('FrameDirection', 'float(FrameDirection)'),
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('input', 'input_dummy'), # 'input' is reserved in GLSL.
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('output', 'output_dummy'), # 'output' is reserved in GLSL.
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]
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for replacement in replace_table:
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source = source.replace(replacement[0], replacement[1])
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for orig, new in replace_table:
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source = source.replace(orig, new)
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return source
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@ -110,15 +106,15 @@ def translate_varyings(varyings, source, direction):
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def no_uniform(elem):
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banned = [
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'_video_size',
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'_texture_size',
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'_output_size',
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'_output_dummy_size',
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'_frame_count',
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'_frame_direction',
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'_mvp_matrix',
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'_vertex_coord',
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'sampler2D'
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'_video_size',
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'_texture_size',
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'_output_size',
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'_output_dummy_size',
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'_frame_count',
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'_frame_direction',
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'_mvp_matrix',
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'_vertex_coord',
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'sampler2D'
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]
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for ban in banned:
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@ -142,7 +138,7 @@ def destructify_varyings(source, direction):
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struct_types = []
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for line in source[1:]:
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if 'struct' in line:
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struct_type = line.split(' ')[1]
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struct_type = line.split()[1]
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if struct_type not in struct_types:
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struct_types.append(struct_type)
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@ -161,7 +157,7 @@ def destructify_varyings(source, direction):
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lines = ['COMPAT_VARYING ' + string for string in source[(i + 1):j]]
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varyings.extend(lines)
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names = [string.strip().split(' ')[1].split(';')[0].strip() for string in source[(i + 1):j]]
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names = [string.split()[1].split(';')[0].strip() for string in source[(i + 1):j]]
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varyings_name.extend(names)
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log('Found elements in struct', struct + ':', names)
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last_struct_decl_line = j
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@ -183,16 +179,13 @@ def destructify_varyings(source, direction):
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# the actual varyings we just declared ...
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# Globals only come before main() ...
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# Make sure to only look after all struct declarations as there might be overlap.
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for line in source[last_struct_decl_line:]:
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for line in remove_comments(source[last_struct_decl_line:]):
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if 'void main()' in line:
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break
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for struct in struct_types:
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if struct in line:
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decomment_line = line.split('//')[0].strip()
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if len(decomment_line) == 0:
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continue
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variable = decomment_line.split(' ')[1].split(';')[0]
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variable = line.split()[1].split(';')[0]
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# Only redirect if the struct is actually used as vertex output.
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for vout_line in vout_lines:
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@ -218,7 +211,7 @@ def destructify_varyings(source, direction):
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for varying_name in varyings_dict:
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trans_from = variable + '.' + varying_name
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trans_to = varyings_dict[varying_name]
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source[index] = source[index].replace(trans_from, trans_to);
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source[index] = source[index].replace(trans_from, trans_to)
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for index, _ in enumerate(source):
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for varying_name in varyings_name:
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@ -337,19 +330,19 @@ def replace_varyings(source):
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uniforms = []
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for index, line in enumerate(source):
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if (('//var' in line) or ('#var' in line)) and ('$vin.' in line):
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orig = line.split(' ')[2]
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orig = line.split()[2]
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translated = translate_varying(orig)
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if translated != orig and translated not in attribs:
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cg_attrib = line.split(':')[2].split(' ')[1]
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if len(cg_attrib.strip()) > 0:
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if cg_attrib:
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translations.append((cg_attrib, translated))
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attribs.append(translated)
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elif ('//var' in line) or ('#var' in line):
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orig = line.split(' ')[2]
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orig = line.split()[2]
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translated = translate_texture_size(orig)
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if translated != orig and translated not in uniforms:
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cg_uniform = line.split(':')[2].split(' ')[1]
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if len(cg_uniform.strip()) > 0:
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if cg_uniform:
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translations.append((cg_uniform, translated))
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uniforms.append(translated)
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@ -372,6 +365,51 @@ def replace_varyings(source):
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return ret
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def fix_samplers(log_prefix, ref_index, source):
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translations = []
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added_samplers = []
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translated_samplers = []
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uniforms = []
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struct_texunit0 = False # If True, we have to append uniform sampler2D Texture manually ...
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for line in source:
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if ('TEXUNIT0' in line) and ('semantic' not in line):
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main_sampler = (line.split(':')[2].split(' ')[1], 'Texture')
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if main_sampler[0]:
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translations.append(main_sampler)
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log(log_prefix, 'Sampler:', main_sampler[0], '->', main_sampler[1])
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struct_texunit0 = '.' in main_sampler[0]
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elif ('//var sampler2D' in line) or ('#var sampler2D' in line):
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cg_texture = line.split()[2]
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translated = translate_texture(cg_texture)
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orig_name = translated
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new_name = line.split(':')[2].split(' ')[1]
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log(log_prefix, 'Sampler:', new_name, '->', orig_name)
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if new_name:
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if translated != cg_texture and translated not in translated_samplers:
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translated_samplers.append(translated)
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added_samplers.append('uniform sampler2D ' + translated + ';')
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translations.append((new_name, orig_name))
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elif ('//var' in line) or ('#var' in line):
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orig = line.split()[2]
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translated = translate_texture_size(orig)
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if translated != orig and translated not in uniforms:
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cg_uniform = line.split(':')[2].split(' ')[1]
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if cg_uniform:
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translations.append((cg_uniform, translated))
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uniforms.append(translated)
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for sampler in added_samplers:
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source.insert(ref_index, sampler)
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if struct_texunit0:
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source.insert(ref_index, 'uniform sampler2D Texture;')
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for index, line in enumerate(source):
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for orig, new in translations:
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log(log_prefix, 'Translation:', orig, '->', new)
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source[index] = source[index].replace(orig, new)
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return source
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def hack_source_vertex(source):
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ref_index = 0
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for index, line in enumerate(source):
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@ -387,37 +425,7 @@ def hack_source_vertex(source):
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break
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# Fix samplers in vertex shader (supported by GLSL).
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translations = []
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added_samplers = []
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translated_samplers = []
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struct_texunit0 = False # If True, we have to append uniform sampler2D Texture manually ...
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for line in source:
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if ('TEXUNIT0' in line) and ('semantic' not in line):
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main_sampler = (line.split(':')[2].split(' ')[1], 'Texture')
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if len(main_sampler[0]) > 0:
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translations.append(main_sampler)
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log('Vertex: Sampler:', main_sampler[0], '->', main_sampler[1])
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struct_texunit0 = '.' in main_sampler[0]
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elif ('//var sampler2D' in line) or ('#var sampler2D' in line):
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cg_texture = line.split(' ')[2]
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translated = translate_texture(cg_texture)
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orig_name = translated
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new_name = line.split(':')[2].split(' ')[1]
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log('Vertex: Sampler:', new_name, '->', orig_name)
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if len(new_name) > 0:
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if translated != cg_texture and translated not in translated_samplers:
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translated_samplers.append(translated)
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added_samplers.append('uniform sampler2D ' + translated + ';')
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translations.append((new_name, orig_name))
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for sampler in added_samplers:
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source.insert(ref_index, sampler)
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if struct_texunit0:
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source.insert(ref_index, 'uniform sampler2D Texture;')
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for index, line in enumerate(source):
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for translation in translations:
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source[index] = source[index].replace(translation[0], translation[1])
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source = fix_samplers('Vertex:', ref_index, source)
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source = destructify_varyings(source, '$vout.')
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source = replace_varyings(source)
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return source
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@ -426,13 +434,13 @@ def hack_source_vertex(source):
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def replace_global_fragment(source):
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source = replace_global_in(source)
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replace_table = [
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('varying', 'COMPAT_VARYING'),
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('texture2D', 'COMPAT_TEXTURE'),
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('FrameCount', 'float(FrameCount)'),
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('FrameDirection', 'float(FrameDirection)'),
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('input', 'input_dummy'),
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('output', 'output_dummy'), # 'output' is reserved in GLSL.
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('gl_FragColor', 'FragColor'),
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('varying', 'COMPAT_VARYING'),
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('texture2D', 'COMPAT_TEXTURE'),
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('FrameCount', 'float(FrameCount)'),
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('FrameDirection', 'float(FrameDirection)'),
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('input', 'input_dummy'),
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('output', 'output_dummy'), # 'output' is reserved in GLSL.
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('gl_FragColor', 'FragColor'),
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]
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for replacement in replace_table:
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@ -487,54 +495,9 @@ def hack_source_fragment(source):
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ref_index = index
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break
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translations = []
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added_samplers = []
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translated_samplers = []
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uniforms = []
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struct_texunit0 = False # If True, we have to append uniform sampler2D Texture manually ...
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for line in source:
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if ('TEXUNIT0' in line) and ('semantic' not in line):
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main_sampler = (line.split(':')[2].split(' ')[1], 'Texture')
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if len(main_sampler[0]) > 0:
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translations.append(main_sampler)
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log('Fragment: Sampler:', main_sampler[0], '->', main_sampler[1])
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struct_texunit0 = '.' in main_sampler[0]
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elif ('//var sampler2D' in line) or ('#var sampler2D' in line):
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cg_texture = line.split(' ')[2]
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translated = translate_texture(cg_texture)
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orig_name = translated
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new_name = line.split(':')[2].split(' ')[1]
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log('Fragment: Sampler:', new_name, '->', orig_name)
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if len(new_name) > 0:
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if translated != cg_texture and translated not in translated_samplers:
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translated_samplers.append(translated)
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added_samplers.append('uniform sampler2D ' + translated + ';')
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translations.append((new_name, orig_name))
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elif ('//var' in line) or ('#var' in line):
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orig = line.split(' ')[2]
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translated = translate_texture_size(orig)
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if translated != orig and translated not in uniforms:
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cg_uniform = line.split(':')[2].split(' ')[1]
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if len(cg_uniform.strip()) > 0:
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translations.append((cg_uniform, translated))
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uniforms.append(translated)
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for sampler in added_samplers:
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source.insert(ref_index, sampler)
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for uniform in uniforms:
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source.insert(ref_index, 'uniform COMPAT_PRECISION vec2 ' + uniform + ';')
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if struct_texunit0:
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source.insert(ref_index, 'uniform sampler2D Texture;')
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ret = []
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for line in source:
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for translation in translations:
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log('Translation:', translation[0], '->', translation[1])
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line = line.replace(translation[0], translation[1])
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ret.append(line)
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ret = destructify_varyings(ret, '$vin.')
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return ret
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source = fix_samplers('Fragment:', ref_index, source)
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source = destructify_varyings(source, '$vin.')
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return source
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def validate_shader(source, target):
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