diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/main/format_info.py | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/src/mesa/main/format_info.py b/src/mesa/main/format_info.py new file mode 100644 index 00000000000..9b63bfb5592 --- /dev/null +++ b/src/mesa/main/format_info.py @@ -0,0 +1,181 @@ +#!/usr/bin/env python +# +# Copyright 2014 Intel Corporation +# +# Permission is hereby granted, free of charge, to any person obtaining a +# copy of this software and associated documentation files (the +# "Software"), to deal in the Software without restriction, including +# without limitation the rights to use, copy, modify, merge, publish, +# distribute, sub license, and/or sell copies of the Software, and to +# permit persons to whom the Software is furnished to do so, subject to +# the following conditions: +# +# The above copyright notice and this permission notice (including the +# next paragraph) shall be included in all copies or substantial portions +# of the Software. +# +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. +# IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR +# ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, +# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE +# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +import format_parser as parser +import sys + +def get_gl_base_format(fmat): + if fmat.name == 'MESA_FORMAT_NONE': + return 'GL_NONE' + elif fmat.name in ['MESA_FORMAT_YCBCR', 'MESA_FORMAT_YCBCR_REV']: + return 'GL_YCBCR_MESA' + elif fmat.has_channel('r'): + if fmat.has_channel('g'): + if fmat.has_channel('b'): + if fmat.has_channel('a'): + return 'GL_RGBA' + else: + return 'GL_RGB' + else: + return 'GL_RG' + else: + return 'GL_RED' + elif fmat.has_channel('l'): + if fmat.has_channel('a'): + return 'GL_LUMINANCE_ALPHA' + else: + return 'GL_LUMINANCE' + elif fmat.has_channel('a') and fmat.num_channels() == 1: + return 'GL_ALPHA' + elif fmat.has_channel('z'): + if fmat.has_channel('s'): + return 'GL_DEPTH_STENCIL' + else: + return 'GL_DEPTH_COMPONENT' + elif fmat.has_channel('s'): + return 'GL_STENCIL_INDEX' + elif fmat.has_channel('i') and fmat.num_channels() == 1: + return 'GL_INTENSITY' + else: + assert False + +def get_gl_data_type(fmat): + if fmat.is_compressed(): + if 'SIGNED' in fmat.name or 'SNORM' in fmat.name: + return 'GL_SIGNED_NORMALIZED' + else: + return 'GL_UNSIGNED_NORMALIZED' + elif fmat.name in ['MESA_FORMAT_YCBCR', 'MESA_FORMAT_YCBCR_REV']: + return 'GL_UNSIGNED_NORMALIZED' + + channel = None + for chan in fmat.channels: + if chan.type == 'x' and len(fmat.channels) > 1: + continue # We can do better + elif chan.name == 's' and fmat.has_channel('z'): + continue # We'll use the type from the depth instead + + channel = chan + break; + + if channel.type == parser.UNSIGNED: + if channel.norm: + return 'GL_UNSIGNED_NORMALIZED' + else: + return 'GL_UNSIGNED_INT' + elif channel.type == parser.SIGNED: + if channel.norm: + return 'GL_SIGNED_NORMALIZED' + else: + return 'GL_INT' + elif channel.type == parser.FLOAT: + return 'GL_FLOAT' + elif channel.type == parser.VOID: + return 'GL_NONE' + else: + assert False + +def get_channel_bits(fmat, chan_name): + if fmat.is_compressed(): + # These values are pretty-much bogus, but OpenGL requires that we + # return an "approximate" number of bits. + if fmat.layout == 's3tc': + return 4 if fmat.has_channel(chan_name) else 0 + elif fmat.layout == 'fxt1': + if chan_name in 'rgb': + return 4 + elif chan_name == 'a': + return 1 if fmat.has_channel('a') else 0 + else: + return 0 + elif fmat.layout == 'rgtc': + return 8 if fmat.has_channel(chan_name) else 0 + elif fmat.layout in ('etc1', 'etc2'): + if fmat.name.endswith('_ALPHA1') and chan_name == 'a': + return 1 + + bits = 11 if fmat.name.endswith('11_EAC') else 8 + return bits if fmat.has_channel(chan_name) else 0 + else: + assert False + else: + # Uncompressed textures + for chan in fmat.channels: + if chan.name == chan_name: + return chan.size + return 0 + +formats = parser.parse(sys.argv[1]) + +print ''' +/* + * Mesa 3-D graphics library + * + * Copyright (c) 2014 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + + /* + * This file is AUTOGENERATED by format_info.py. Do not edit it + * manually or commit it into version control. + */ + +static struct gl_format_info format_info[MESA_FORMAT_COUNT] = +{ +''' + +for fmat in formats: + print ' {' + print ' {0},'.format(fmat.name) + print ' "{0}",'.format(fmat.name) + print ' {0},'.format(get_gl_base_format(fmat)) + print ' {0},'.format(get_gl_data_type(fmat)) + + bits = [ get_channel_bits(fmat, name) for name in ['r', 'g', 'b', 'a']] + print ' {0},'.format(', '.join(map(str, bits))) + bits = [ get_channel_bits(fmat, name) for name in ['l', 'i', 'I', 'z', 's']] + print ' {0},'.format(', '.join(map(str, bits))) + + print ' {0}, {1}, {2},'.format(fmat.block_width, fmat.block_height, + int(fmat.block_size() / 8)) + print ' },' + +print '};' |