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https://github.com/libretro/RetroArch
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Updates and fixes for cg2glsl.
This commit is contained in:
Themaister
parent
954727aa79
commit
1a071c4992
119
tools/cg2glsl.py
119
tools/cg2glsl.py
@ -60,6 +60,8 @@ 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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('POSITION', 'VertexCoord'),
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('TEXCOORD1', 'LUTTexCoord'),
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('TEXCOORD0', 'TexCoord'),
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@ -143,7 +145,7 @@ def destructify_varyings(source, direction):
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while (j < len(source)) and ('};' not in source[j]):
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j += 1
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lines = ['varying ' + string for string in source[i + 1 : j]]
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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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varyings_name.extend(names)
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@ -173,12 +175,15 @@ def destructify_varyings(source, direction):
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for struct in struct_types:
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if struct in line:
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variable = line.split(' ')[1].split(';')[0]
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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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# 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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if variable in vout_line:
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log('Found struct variable for', struct + ':', variable)
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log('Found struct variable for', struct + ':', variable, 'in line:', line)
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variables.append(variable)
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break
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@ -335,15 +340,11 @@ def replace_varyings(source):
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if 'void main()' in line:
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for attrib in attribs:
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if attrib == 'VertexCoord':
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source.insert(index, 'attribute vec4 ' + attrib + ';')
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source.insert(index, 'COMPAT_attribute vec4 ' + attrib + ';')
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else:
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source.insert(index, 'attribute vec2 ' + attrib + ';')
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source.insert(index, 'COMPAT_attribute vec2 ' + attrib + ';')
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for uniform in uniforms:
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source.insert(index, '#endif')
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source.insert(index, 'uniform vec2 ' + uniform + ';')
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source.insert(index, '#else')
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source.insert(index, 'uniform mediump vec2 ' + uniform + ';')
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source.insert(index, '#ifdef GL_ES')
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source.insert(index, 'uniform COMPAT_PRECISION vec2 ' + uniform + ';')
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break
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for line in source:
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@ -357,15 +358,9 @@ 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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if 'void main()' in line:
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source.insert(index, '#endif')
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source.insert(index, 'uniform vec2 InputSize;')
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source.insert(index, 'uniform vec2 TextureSize;')
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source.insert(index, 'uniform vec2 OutputSize;')
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source.insert(index, '#else')
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source.insert(index, 'uniform mediump vec2 InputSize;')
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source.insert(index, 'uniform mediump vec2 TextureSize;')
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source.insert(index, 'uniform mediump vec2 OutputSize;')
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source.insert(index, '#ifdef GL_ES')
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source.insert(index, 'uniform COMPAT_PRECISION vec2 InputSize;')
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source.insert(index, 'uniform COMPAT_PRECISION vec2 TextureSize;')
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source.insert(index, 'uniform COMPAT_PRECISION vec2 OutputSize;')
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source.insert(index, 'uniform int FrameCount;')
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source.insert(index, 'uniform int FrameDirection;')
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source.insert(index, 'uniform mat4 MVPMatrix;')
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@ -412,10 +407,12 @@ 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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('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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@ -461,15 +458,9 @@ def hack_source_fragment(source):
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ref_index = 0
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for index, line in enumerate(source):
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if 'void main()' in line:
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source.insert(index, '#endif')
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source.insert(index, 'uniform vec2 InputSize;')
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source.insert(index, 'uniform vec2 TextureSize;')
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source.insert(index, 'uniform vec2 OutputSize;')
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source.insert(index, '#else')
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source.insert(index, 'uniform mediump vec2 InputSize;')
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source.insert(index, 'uniform mediump vec2 TextureSize;')
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source.insert(index, 'uniform mediump vec2 OutputSize;')
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source.insert(index, '#ifdef GL_ES')
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source.insert(index, 'uniform COMPAT_PRECISION vec2 InputSize;')
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source.insert(index, 'uniform COMPAT_PRECISION vec2 TextureSize;')
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source.insert(index, 'uniform COMPAT_PRECISION vec2 OutputSize;')
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source.insert(index, 'uniform int FrameCount;')
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source.insert(index, 'uniform int FrameDirection;')
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ref_index = index
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@ -510,11 +501,7 @@ def hack_source_fragment(source):
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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, '#endif')
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source.insert(ref_index, 'uniform vec2 ' + uniform + ';')
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source.insert(ref_index, '#else')
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source.insert(ref_index, 'uniform mediump vec2 ' + uniform + ';')
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source.insert(ref_index, '#ifdef GL_ES')
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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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@ -528,24 +515,38 @@ def hack_source_fragment(source):
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return ret
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def validate_shader(source, target):
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command = ['cgc', '-noentry', '-ogles']
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p = subprocess.Popen(command, stdin = subprocess.PIPE, stdout = subprocess.PIPE, stderr = subprocess.PIPE)
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stdout_ret, stderr_ret = p.communicate(source.encode())
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log('Shader:')
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log('===')
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log(source)
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log('===')
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command = ['cgc', '-noentry', '-ogles']
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p = subprocess.Popen(command, stdin = subprocess.PIPE, stdout = subprocess.PIPE, stderr = subprocess.PIPE)
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stdout_ret, stderr_ret = p.communicate(source.encode())
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log('CGC:', stderr_ret.decode())
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return p.returncode == 0
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def preprocess_vertex(source_data):
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input_data = source_data.split('\n')
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ret = []
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for line in input_data:
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if 'uniform float4x4' in line:
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ret.append('#pragma pack_matrix(column_major)\n')
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ret.append(line)
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ret.append('#pragma pack_matrix(row_major)\n')
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else:
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ret.append(line)
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return '\n'.join(ret)
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def convert(source, dest):
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vert_cmd = ['cgc', '-profile', 'glesv', '-entry', 'main_vertex']
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with open(source, 'r') as f:
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source_data = f.read()
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p = subprocess.Popen(vert_cmd, stdin = subprocess.PIPE, stderr = subprocess.PIPE, stdout = subprocess.PIPE)
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vertex_source, stderr_ret = p.communicate(input = ('#pragma pack_matrix(column_major)\n' + source_data).encode())
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source_data = preprocess_vertex(source_data)
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vertex_source, stderr_ret = p.communicate(input = source_data.encode())
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log(stderr_ret.decode())
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vertex_source = vertex_source.decode()
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@ -586,8 +587,46 @@ def convert(source, dest):
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vertex_source = remove_comments(vertex_source[1:])
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fragment_source = remove_comments(fragment_source[1:])
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out_vertex = '\n'.join(vertex_source)
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out_fragment = '\n'.join(['#ifdef GL_ES', 'precision mediump float;', '#endif'] + fragment_source)
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vert_hacks = []
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vert_hacks.append('''
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#if __VERSION__ >= 130
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#define COMPAT_varying out
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#define COMPAT_attribute in
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#else
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#define COMPAT_varying varying
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#define COMPAT_attribute attribute
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#endif
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#ifdef GL_ES
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#define COMPAT_PRECISION mediump
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#else
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#define COMPAT_PRECISION
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#endif''')
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out_vertex = '\n'.join(vert_hacks + vertex_source)
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frag_hacks = []
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frag_hacks.append('''
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#if __VERSION__ >= 130
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#define COMPAT_varying in
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out vec4 FragColor;
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#else
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#define COMPAT_varying varying
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#define FragColor gl_FragColor
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#endif
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#ifdef GL_ES
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#ifdef GL_FRAGMENT_PRECISION_HIGH
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precision highp float;
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#else
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precision mediump float;
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#endif
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#define COMPAT_PRECISION mediump
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#else
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#define COMPAT_PRECISION
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#endif''')
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out_fragment = '\n'.join(frag_hacks + fragment_source)
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if not validate_shader(out_vertex, 'glesv'):
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log('Vertex shader does not compile ...')
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