Permalink
Fetching contributors…
Cannot retrieve contributors at this time
executable file 755 lines (619 sloc) 25.8 KB
#!/usr/bin/env python3
"""
Python 3 script which converts simple RetroArch Cg shaders to modern GLSL (ES) format.
Author: Hans-Kristian Arntzen (Themaister)
License: Public domain
"""
import os
import errno
import subprocess
import sys
if sys.version_info < (3, 0, 0):
sys.stderr.write("You need python 3.0 or later to run this script\n")
exit(1)
batch_mode = False
def log(*arg):
if not batch_mode:
# FIXME: This causes a syntax error in python2, preventing the version warning from displaying.
print(*arg)
def keep_line_if(func, lines):
ret = []
for line in filter(func, lines):
ret.append(line)
return ret
def remove_comments(source_lines):
lines_without_comments = [line.split('//')[0] for line in source_lines]
return keep_line_if(lambda line: line, lines_without_comments)
def defines_var(line):
return ('//var' in line) or ('#var' in line)
def replace_by_table(source, table):
for orig, new in table:
if orig:
source = source.replace(orig, new)
return source
def replace_global_in(source):
replace_table = [
('IN.video_size', 'InputSize'),
('IN.texture_size', 'TextureSize'),
('IN.output_size', 'OutputSize'),
('IN.frame_count', 'FrameCount'),
('IN.frame_direction', 'FrameDirection'),
]
for line in source.splitlines():
if defines_var(line):
for index, replace in enumerate(replace_table):
orig = line.split()[2]
if replace[0] == orig:
replace_table[index] = (line.split(':')[2].split(' ')[1], replace_table[index][1])
log('Replace globals:', replace_table)
return replace_by_table(source, replace_table)
def replace_global_vertex(source):
source = replace_global_in(source)
replace_table = [
('attribute', 'COMPAT_ATTRIBUTE'),
('varying', 'COMPAT_VARYING'),
('texture2D', 'COMPAT_TEXTURE'),
('POSITION', 'VertexCoord'),
('TEXCOORD1', 'LUTTexCoord'),
('TEXCOORD0', 'TexCoord'),
('TEXCOORD', 'TexCoord'),
('uniform vec4 _modelViewProj1[4];', ''),
('_modelViewProj1', 'MVPMatrix'),
('_IN1._mvp_matrix[0]', 'MVPMatrix[0]'),
('_IN1._mvp_matrix[1]', 'MVPMatrix[1]'),
('_IN1._mvp_matrix[2]', 'MVPMatrix[2]'),
('_IN1._mvp_matrix[3]', 'MVPMatrix[3]'),
('FrameCount', 'float(FrameCount)'),
('FrameDirection', 'float(FrameDirection)'),
('input', 'input_dummy'), # 'input' is reserved in GLSL.
('output', 'output_dummy'), # 'output' is reserved in GLSL.
]
return replace_by_table(source, replace_table)
def translate_varyings(varyings, source, direction):
dictionary = {}
for varying in varyings:
for line in source:
if defines_var(line) and (varying in line) and (direction in line):
log('Found line for', varying + ':', line)
dictionary[varying] = 'VAR' + line.split(':')[0].split('.')[-1].strip()
break
return dictionary
def no_uniform(elem):
banned = [
'_video_size',
'_texture_size',
'_output_size',
'_output_dummy_size',
'_frame_count',
'_frame_direction',
'_mvp_matrix',
'_vertex_coord',
'sampler2D'
]
for ban in banned:
if ban in elem:
return False
return True
def destructify_varyings(source, direction):
# We have to change varying structs that Cg support to single varyings for GL.
# Varying structs aren't supported until later versions
# of GLSL.
# Global structs are sometimes used to store temporary data.
# Don't try to remove this as it breaks compile.
vout_lines = []
for line in source:
if defines_var(line) and (('$vout.' in line) or ('$vin.' in line)):
vout_lines.append(line)
struct_types = []
for line in source[1:]:
if 'struct' in line:
struct_type = line.split()[1]
if struct_type not in struct_types:
struct_types.append(struct_type)
log('Struct types:', struct_types)
last_struct_decl_line = 0
varyings = []
varyings_name = []
# Find all varyings in structs and make them "global" varyings.
for struct in struct_types:
for i, line in enumerate(source):
if ('struct ' + struct) in line:
j = i + 1
while (j < len(source)) and ('};' not in source[j]):
j += 1
lines = ['COMPAT_VARYING ' + string for string in source[(i + 1):j]]
varyings.extend(lines)
names = [string.split()[1].split(';')[0].strip() for string in source[(i + 1):j]]
varyings_name.extend(names)
log('Found elements in struct', struct + ':', names)
last_struct_decl_line = j
# Must have explicit uniform sampler2D in struct.
for index in range(i, j + 1):
if 'sampler2D' in source[index]:
source[index] = 'float _placeholder{};'.format(index)
varyings_tmp = varyings
varyings = []
variables = []
# Don't include useless varyings like IN.video_size, IN.texture_size, etc as they are not actual varyings ...
for i in filter(no_uniform, varyings_tmp):
varyings.append(i)
# Find any global variable struct that is supposed to be the output varying, and redirect all references to it to
# the actual varyings we just declared ...
# Globals only come before main() ...
# Make sure to only look after all struct declarations as there might be overlap.
for line in remove_comments(source[last_struct_decl_line:]):
if 'void main()' in line:
break
for struct in struct_types:
if struct in line:
variable = line.split()[1].split(';')[0]
# Only redirect if the struct is actually used as vertex output.
for vout_line in vout_lines:
if variable in vout_line:
log('Found struct variable for', struct + ':', variable, 'in line:', line)
variables.append(variable)
break
varyings_dict = translate_varyings(varyings_name, source, direction)
log('Varyings dict:', varyings_dict)
# Append all varyings. Keep the structs as they might be used as regular values.
for varying in varyings:
source.insert(1, varying)
log('Variables:', variables)
log('Varying names:', varyings_name)
# Replace struct access with global access, e.g. (_co1._c00 => _c00)
# Also replace mangled Cg name with 'real' name.
for index, _ in enumerate(source):
for variable in variables:
for varying_name in varyings_dict:
trans_from = variable + '.' + varying_name
trans_to = varyings_dict[varying_name]
source[index] = source[index].replace(trans_from, trans_to)
for index, _ in enumerate(source):
for varying_name in varyings_name:
if varying_name in varyings_dict:
source[index] = source[index].replace(varying_name, varyings_dict[varying_name])
# Replace union <struct>. Sometimes we get collision in vertex and fragment.
for index, line in enumerate(source):
for struct_type in struct_types:
line = line.replace('uniform ' + struct_type, struct_type)
source[index] = line
return source
def translate(cg, translations):
if cg in translations:
return translations[cg]
else:
return cg
def translate_varying(cg):
translations = {
'IN.tex_coord': 'TexCoord',
'IN.vertex_coord': 'VertexCoord',
'IN.lut_tex_coord': 'LUTTexCoord',
'ORIG.tex_coord': 'OrigTexCoord',
'FEEDBACK.tex_coord': 'FeedbackTexCoord',
'PREV.tex_coord': 'PrevTexCoord',
'PREV1.tex_coord': 'Prev1TexCoord',
'PREV2.tex_coord': 'Prev2TexCoord',
'PREV3.tex_coord': 'Prev3TexCoord',
'PREV4.tex_coord': 'Prev4TexCoord',
'PREV5.tex_coord': 'Prev5TexCoord',
'PREV6.tex_coord': 'Prev6TexCoord',
'PASS1.tex_coord': 'Pass1TexCoord',
'PASS2.tex_coord': 'Pass2TexCoord',
'PASS3.tex_coord': 'Pass3TexCoord',
'PASS4.tex_coord': 'Pass4TexCoord',
'PASS5.tex_coord': 'Pass5TexCoord',
'PASS6.tex_coord': 'Pass6TexCoord',
'PASS7.tex_coord': 'Pass7TexCoord',
'PASS8.tex_coord': 'Pass8TexCoord',
'PASSPREV2.tex_coord': 'PassPrev2TexCoord',
'PASSPREV3.tex_coord': 'PassPrev3TexCoord',
'PASSPREV4.tex_coord': 'PassPrev4TexCoord',
'PASSPREV5.tex_coord': 'PassPrev5TexCoord',
'PASSPREV6.tex_coord': 'PassPrev6TexCoord',
'PASSPREV7.tex_coord': 'PassPrev7TexCoord',
'PASSPREV8.tex_coord': 'PassPrev8TexCoord',
}
return translate(cg, translations)
def translate_texture_size(cg):
translations = {
'ORIG.texture_size': 'OrigTextureSize',
'FEEDBACK.texture_size': 'FeedbackTextureSize',
'PREV.texture_size': 'PrevTextureSize',
'PREV1.texture_size': 'Prev1TextureSize',
'PREV2.texture_size': 'Prev2TextureSize',
'PREV3.texture_size': 'Prev3TextureSize',
'PREV4.texture_size': 'Prev4TextureSize',
'PREV5.texture_size': 'Prev5TextureSize',
'PREV6.texture_size': 'Prev6TextureSize',
'PASS1.texture_size': 'Pass1TextureSize',
'PASS2.texture_size': 'Pass2TextureSize',
'PASS3.texture_size': 'Pass3TextureSize',
'PASS4.texture_size': 'Pass4TextureSize',
'PASS5.texture_size': 'Pass5TextureSize',
'PASS6.texture_size': 'Pass6TextureSize',
'PASS7.texture_size': 'Pass7TextureSize',
'PASS8.texture_size': 'Pass8TextureSize',
'PASSPREV2.texture_size': 'PassPrev2TextureSize',
'PASSPREV3.texture_size': 'PassPrev3TextureSize',
'PASSPREV4.texture_size': 'PassPrev4TextureSize',
'PASSPREV5.texture_size': 'PassPrev5TextureSize',
'PASSPREV6.texture_size': 'PassPrev6TextureSize',
'PASSPREV7.texture_size': 'PassPrev7TextureSize',
'PASSPREV8.texture_size': 'PassPrev8TextureSize',
'ORIG.video_size': 'OrigInputSize',
'FEEDBACK.video_size': 'FeedbackInputSize',
'PREV.video_size': 'PrevInputSize',
'PREV1.video_size': 'Prev1InputSize',
'PREV2.video_size': 'Prev2InputSize',
'PREV3.video_size': 'Prev3InputSize',
'PREV4.video_size': 'Prev4InputSize',
'PREV5.video_size': 'Prev5InputSize',
'PREV6.video_size': 'Prev6InputSize',
'PASS1.video_size': 'Pass1InputSize',
'PASS2.video_size': 'Pass2InputSize',
'PASS3.video_size': 'Pass3InputSize',
'PASS4.video_size': 'Pass4InputSize',
'PASS5.video_size': 'Pass5InputSize',
'PASS6.video_size': 'Pass6InputSize',
'PASS7.video_size': 'Pass7InputSize',
'PASS8.video_size': 'Pass8InputSize',
'PASSPREV2.video_size': 'PassPrev2InputSize',
'PASSPREV3.video_size': 'PassPrev3InputSize',
'PASSPREV4.video_size': 'PassPrev4InputSize',
'PASSPREV5.video_size': 'PassPrev5InputSize',
'PASSPREV6.video_size': 'PassPrev6InputSize',
'PASSPREV7.video_size': 'PassPrev7InputSize',
'PASSPREV8.video_size': 'PassPrev8InputSize',
}
return translate(cg, translations)
def replace_varyings(source):
ret = []
translations = []
attribs = []
uniforms = []
for index, line in enumerate(source):
if defines_var(line):
func = translate_texture_size
collection = uniforms
if '$vin.' in line:
func = translate_varying
collection = attribs
orig = line.split()[2]
translated = func(orig)
if translated != orig and translated not in collection:
cg_var = line.split(':')[2].split(' ')[1]
if cg_var:
translations.append((cg_var, translated))
collection.append(translated)
for index, line in enumerate(source):
if 'void main()' in line:
for attrib in attribs:
if attrib == 'VertexCoord':
source.insert(index, 'COMPAT_ATTRIBUTE vec4 ' + attrib + ';')
else:
source.insert(index, 'COMPAT_ATTRIBUTE vec2 ' + attrib + ';')
for uniform in uniforms:
source.insert(index, 'uniform COMPAT_PRECISION vec2 ' + uniform + ';')
break
for line in source:
for trans in translations:
line = line.replace(trans[0], trans[1])
ret.append(line)
return ret
def fix_samplers(log_prefix, ref_index, source):
translations = []
added_samplers = []
translated_samplers = []
uniforms = []
struct_texunit0 = False # If True, we have to append uniform sampler2D Texture manually ...
for line in source:
if ('TEXUNIT0' in line) and ('semantic' not in line):
main_sampler = (line.split(':')[2].split(' ')[1], 'Texture')
if main_sampler[0]:
translations.append(main_sampler)
log(log_prefix, 'Sampler:', main_sampler[0], '->', main_sampler[1])
struct_texunit0 = '.' in main_sampler[0]
elif ('//var sampler2D' in line) or ('#var sampler2D' in line):
cg_texture = line.split()[2]
translated = translate_texture(cg_texture)
orig_name = translated
new_name = line.split(':')[2].split(' ')[1]
log(log_prefix, 'Sampler:', new_name, '->', orig_name)
if new_name:
if translated != cg_texture and translated not in translated_samplers:
translated_samplers.append(translated)
added_samplers.append('uniform sampler2D ' + translated + ';')
translations.append((new_name, orig_name))
elif defines_var(line):
orig = line.split()[2]
translated = translate_texture_size(orig)
if translated != orig and translated not in uniforms:
cg_uniform = line.split(':')[2].split(' ')[1]
if cg_uniform:
translations.append((cg_uniform, translated))
uniforms.append(translated)
for sampler in added_samplers:
source.insert(ref_index, sampler)
if struct_texunit0:
source.insert(ref_index, 'uniform sampler2D Texture;')
for uniform in uniforms:
source.insert(ref_index, 'uniform COMPAT_PRECISION vec2 ' + uniform + ';')
for index, line in enumerate(source):
for orig, new in translations:
log(log_prefix, 'Translation:', orig, '->', new)
source[index] = source[index].replace(orig, new)
return source
def hack_source_vertex(source):
ref_index = 0
for index, line in enumerate(source):
if 'void main()' in line:
source.insert(index, 'uniform COMPAT_PRECISION vec2 InputSize;')
source.insert(index, 'uniform COMPAT_PRECISION vec2 TextureSize;')
source.insert(index, 'uniform COMPAT_PRECISION vec2 OutputSize;')
source.insert(index, 'uniform int FrameCount;')
source.insert(index, 'uniform int FrameDirection;')
source.insert(index, 'uniform mat4 MVPMatrix;')
ref_index = index
break
# Fix samplers in vertex shader (supported by GLSL).
source = fix_samplers('Vertex:', ref_index, source)
source = destructify_varyings(source, '$vout.')
source = replace_varyings(source)
return source
def replace_global_fragment(source):
source = replace_global_in(source)
replace_table = [
('varying', 'COMPAT_VARYING'),
('texture2D', 'COMPAT_TEXTURE'),
('FrameCount', 'float(FrameCount)'),
('FrameDirection', 'float(FrameDirection)'),
('input', 'input_dummy'),
('output', 'output_dummy'), # 'output' is reserved in GLSL.
('gl_FragColor', 'FragColor'),
]
return replace_by_table(source, replace_table)
def translate_texture(cg):
translations = {
'ORIG.texture': 'OrigTexture',
'FEEDBACK.texture': 'FeedbackTexture',
'PREV.texture': 'PrevTexture',
'PREV1.texture': 'Prev1Texture',
'PREV2.texture': 'Prev2Texture',
'PREV3.texture': 'Prev3Texture',
'PREV4.texture': 'Prev4Texture',
'PREV5.texture': 'Prev5Texture',
'PREV6.texture': 'Prev6Texture',
'PASS1.texture': 'Pass1Texture',
'PASS2.texture': 'Pass2Texture',
'PASS3.texture': 'Pass3Texture',
'PASS4.texture': 'Pass4Texture',
'PASS5.texture': 'Pass5Texture',
'PASS6.texture': 'Pass6Texture',
'PASS7.texture': 'Pass7Texture',
'PASS8.texture': 'Pass8Texture',
'PASSPREV2.texture': 'PassPrev2Texture',
'PASSPREV3.texture': 'PassPrev3Texture',
'PASSPREV4.texture': 'PassPrev4Texture',
'PASSPREV5.texture': 'PassPrev5Texture',
'PASSPREV6.texture': 'PassPrev6Texture',
'PASSPREV7.texture': 'PassPrev7Texture',
'PASSPREV8.texture': 'PassPrev8Texture',
}
return translate(cg, translations)
def hack_source_fragment(source):
ref_index = 0
for index, line in enumerate(source):
if 'void main()' in line:
source.insert(index, 'uniform COMPAT_PRECISION vec2 InputSize;')
source.insert(index, 'uniform COMPAT_PRECISION vec2 TextureSize;')
source.insert(index, 'uniform COMPAT_PRECISION vec2 OutputSize;')
source.insert(index, 'uniform int FrameCount;')
source.insert(index, 'uniform int FrameDirection;')
ref_index = index
break
source = fix_samplers('Fragment:', ref_index, source)
source = destructify_varyings(source, '$vin.')
return source
def validate_shader(source, target):
log('Shader:')
log('===')
log(source)
log('===')
command = ['cgc', '-noentry', '-ogles']
p = subprocess.Popen(command, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
stdout_ret, stderr_ret = p.communicate(source.encode())
log('CGC:', stderr_ret.decode())
return p.returncode == 0
def preprocess_vertex(source_data):
input_data = source_data.splitlines()
ret = []
for line in input_data:
if ('uniform' in line) and (('float4x4' in line) or ('half4x4' in line)):
ret.append('#pragma pack_matrix(column_major)\n')
ret.append(line)
ret.append('#pragma pack_matrix(row_major)\n')
else:
ret.append(line)
return '\n'.join(ret)
def convert(source, dest):
# Have to preprocess first to resolve #includes so we can hack potential vertex shaders.
inc_dir = os.path.split(source)[0]
vert_cmd_preprocess = ['cgc', '-E', '-I', '.' if inc_dir == '' else inc_dir, source]
p = subprocess.Popen(vert_cmd_preprocess, stderr=subprocess.PIPE, stdout=subprocess.PIPE)
source_data, stderr_ret = p.communicate()
log(stderr_ret.decode())
if p.returncode != 0:
log('Vertex preprocessing failed ...')
source_data = preprocess_vertex(source_data.decode())
vert_cmd = ['cgc', '-profile', 'glesv', '-entry', 'main_vertex', '-quiet']
p = subprocess.Popen(vert_cmd, stdin=subprocess.PIPE, stderr=subprocess.PIPE, stdout=subprocess.PIPE)
vertex_source, stderr_ret = p.communicate(input=source_data.encode())
log(stderr_ret.decode())
vertex_source = vertex_source.decode()
if p.returncode != 0:
log('Vertex compilation failed ...')
return 1
frag_cmd = ['cgc', '-profile', 'glesf', '-entry', 'main_fragment', '-quiet']
p = subprocess.Popen(frag_cmd, stdin=subprocess.PIPE, stderr=subprocess.PIPE, stdout=subprocess.PIPE)
fragment_source, stderr_ret = p.communicate(input=source_data.encode())
log(stderr_ret.decode())
fragment_source = fragment_source.decode()
if p.returncode != 0:
log('Vertex compilation failed ...')
return 1
vertex_source = replace_global_vertex(vertex_source)
fragment_source = replace_global_fragment(fragment_source)
vertex_source = vertex_source.splitlines()
fragment_source = fragment_source.splitlines()
# Cg think we're using row-major matrices, but we're using column major.
# Also, Cg tends to compile matrix multiplications as dot products in GLSL.
# Hack in a fix for this.
log('Hacking vertex')
vertex_source = hack_source_vertex(vertex_source)
log('Hacking fragment')
fragment_source = hack_source_fragment(fragment_source)
# We compile to GLES, but we really just want modern GL ...
vertex_source = keep_line_if(lambda line: 'precision' not in line, vertex_source)
fragment_source = keep_line_if(lambda line: 'precision' not in line, fragment_source)
# Kill all comments. Cg adds lots of useless comments.
# Remove first line. It contains the name of the cg program.
vertex_source = remove_comments(vertex_source[1:])
fragment_source = remove_comments(fragment_source[1:])
vert_hacks = []
vert_hacks.append('''
#if __VERSION__ >= 130
#define COMPAT_VARYING out
#define COMPAT_ATTRIBUTE in
#define COMPAT_TEXTURE texture
#else
#define COMPAT_VARYING varying
#define COMPAT_ATTRIBUTE attribute
#define COMPAT_TEXTURE texture2D
#endif
#ifdef GL_ES
#define COMPAT_PRECISION mediump
#else
#define COMPAT_PRECISION
#endif''')
out_vertex = '\n'.join(vert_hacks + vertex_source)
frag_hacks = []
frag_hacks.append('''
#if __VERSION__ >= 130
#define COMPAT_VARYING in
#define COMPAT_TEXTURE texture
out vec4 FragColor;
#else
#define COMPAT_VARYING varying
#define FragColor gl_FragColor
#define COMPAT_TEXTURE texture2D
#endif
#ifdef GL_ES
#ifdef GL_FRAGMENT_PRECISION_HIGH
precision highp float;
#else
precision mediump float;
#endif
#define COMPAT_PRECISION mediump
#else
#define COMPAT_PRECISION
#endif''')
out_fragment = '\n'.join(frag_hacks + fragment_source)
if not validate_shader(out_vertex, 'glesv'):
log('Vertex shader does not compile ...')
return 1
if not validate_shader(out_fragment, 'glesf'):
log('Fragment shader does not compile ...')
return 1
with open(dest, 'w') as f:
f.write('// GLSL shader autogenerated by cg2glsl.py.\n')
f.write('#if defined(VERTEX)\n')
f.write(out_vertex)
f.write('\n')
f.write('#elif defined(FRAGMENT)\n')
f.write(out_fragment)
f.write('\n')
f.write('#endif\n')
return 0
def convert_cgp(source, dest):
string = ''
with open(source, 'r') as f:
string = f.read().replace('.cg', '.glsl')
open(dest, 'w').write(string)
def path_ext(path):
_, ext = os.path.splitext(path)
return ext
def convert_path(source, source_dir, dest_dir, conv):
index = 0 if source_dir[-1] == '/' else 1
return os.path.join(dest_dir, source.replace(source_dir, '')[index:]).replace(conv[0], conv[1])
def main():
if len(sys.argv) != 3:
print('Usage: {} prog.cg(p) prog.glsl(p)'.format(sys.argv[0]))
print('Batch mode usage: {} cg-dir out-xml-shader-dir'.format(sys.argv[0]))
print('Requires Python 3 and cgc (nvidia-cg-toolkit) 3.1.')
return 1
if os.path.isdir(sys.argv[1]):
global batch_mode
batch_mode = True
try:
os.makedirs(sys.argv[2])
except OSError as e:
if e.errno != errno.EEXIST:
raise
failed_cnt = 0
success_cnt = 0
failed_files = []
for dirname, _, filenames in os.walk(sys.argv[1]):
for source in filter(lambda path: path_ext(path) == '.cg', [os.path.join(dirname, filename) for filename in filenames]):
dest = convert_path(source, sys.argv[1], sys.argv[2], ('.cg', '.glsl'))
dirpath = os.path.split(dest)[0]
print('Dirpath:', dirpath)
if not os.path.isdir(dirpath):
try:
os.makedirs(dirpath)
except OSError as e:
if e.errno != errno.EEXIST:
raise
try:
ret = convert(source, dest)
print(source, '->', dest, '...', 'succeeded!' if ret == 0 else 'failed!')
if ret == 0:
success_cnt += 1
else:
failed_cnt += 1
failed_files.append(source)
except Exception as e:
print(e)
failed_files.append(source)
failed_cnt += 1
for source in filter(lambda path: path_ext(path) == '.cgp', [os.path.join(dirname, filename) for filename in filenames]):
dest = convert_path(source, sys.argv[1], sys.argv[2], ('.cgp', '.glslp'))
dirpath = os.path.split(dest)[0]
print('Dirpath:', dirpath)
if not os.path.isdir(dirpath):
try:
os.makedirs(dirpath)
except OSError as e:
if e.errno != errno.EEXIST:
raise
try:
convert_cgp(source, dest)
success_cnt += 1
except Exception as e:
print(e)
failed_files.append(source)
failed_cnt += 1
print(success_cnt, 'shaders converted successfully.')
print(failed_cnt, 'shaders failed.')
if failed_cnt > 0:
print('Failed shaders:')
for path in failed_files:
print(path)
else:
source = sys.argv[1]
dest = sys.argv[2]
if path_ext(source) == '.cgp':
sys.exit(convert_cgp(source, dest))
else:
sys.exit(convert(source, dest))
if __name__ == '__main__':
sys.exit(main())