| 1 | # Copyright (c) 2001, Stanford University
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| 2 | # All rights reserved.
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| 3 | #
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| 4 | # See the file LICENSE.txt for information on redistributing this software.
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| 5 |
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| 6 | import sys, re, string
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| 7 | import apiutil
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| 8 |
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| 9 | line_re = re.compile (r'^(\S+)\s+(GL_\S+)\s+(.*)\s*$')
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| 10 | extensions_line_re = re.compile(r'^(\S+)\s+(GL_\S+)\s+(GL_\S+)\s+(.*)\s*$')
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| 11 |
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| 12 | params = {}
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| 13 | extended_params = {}
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| 14 |
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| 15 | input = open( sys.argv[2]+"/state_get.txt", 'r' )
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| 16 | for line in input.readlines():
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| 17 | if line[0] == '#':
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| 18 | continue
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| 19 | match = line_re.match( line )
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| 20 | if match:
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| 21 | type = match.group(1)
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| 22 | pname = match.group(2)
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| 23 | fields = string.split( match.group(3) )
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| 24 | params[pname] = ( type, fields )
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| 25 |
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| 26 | input = open( sys.argv[2]+"/state_extensions_get.txt", 'r' )
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| 27 | for line in input.readlines():
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| 28 | if line[0] == '#':
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| 29 | continue
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| 30 | match = extensions_line_re.match( line )
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| 31 | if match:
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| 32 | type = match.group(1)
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| 33 | pname = match.group(2)
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| 34 | ifdef = match.group(3)
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| 35 | fields = string.split( match.group(4) )
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| 36 | extended_params[pname] = ( type, ifdef, fields )
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| 37 |
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| 38 | convert = {
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| 39 | 'GLenum' : {
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| 40 | 'Boolean' : '(GLboolean) ( %s != 0 )',
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| 41 | 'Double' : '(GLdouble) %s',
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| 42 | 'Float' : '(GLfloat) %s',
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| 43 | 'Integer' : '(GLint) %s'
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| 44 | },
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| 45 | 'GLboolean' : {
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| 46 | 'Boolean' : '(GLboolean) ( %s != 0 )',
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| 47 | 'Double' : '(GLdouble) %s',
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| 48 | 'Float' : '(GLfloat) %s',
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| 49 | 'Integer' : '(GLint) %s'
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| 50 | },
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| 51 | 'GLint' : {
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| 52 | 'Boolean' : '(GLboolean) ( %s != 0 )',
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| 53 | 'Double' : '(GLdouble) %s',
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| 54 | 'Float' : '(GLfloat) %s',
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| 55 | 'Integer' : '(GLint) %s'
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| 56 | },
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| 57 | 'GLuint' : {
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| 58 | 'Boolean' : '(GLboolean) ( %s != 0 )',
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| 59 | 'Double' : '(GLdouble) %s',
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| 60 | 'Float' : '(GLfloat) %s',
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| 61 | 'Integer' : '(GLint) %s'
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| 62 | },
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| 63 | 'GLfloat' : {
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| 64 | 'Boolean' : '(GLboolean) ( %s != 0.0f )',
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| 65 | 'Double' : '(GLdouble) %s',
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| 66 | 'Float' : '%s',
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| 67 | 'Integer' : '(GLint) %s'
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| 68 | },
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| 69 | 'GLdouble' : {
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| 70 | 'Boolean' : '(GLboolean) ( %s != 0.0 )',
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| 71 | 'Double' : '%s',
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| 72 | 'Float' : '(GLfloat) %s',
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| 73 | 'Integer' : '(GLint) %s'
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| 74 | },
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| 75 | 'GLdefault' : {
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| 76 | 'Boolean' : '(GLboolean) ( %s != (GLdefault) 0.0 )',
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| 77 | 'Double' : '(GLdouble) %s',
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| 78 | 'Float' : '(GLfloat) %s',
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| 79 | 'Integer' : '(GLint) %s'
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| 80 | },
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| 81 | 'GLclampd' : {
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| 82 | 'Boolean' : '(GLboolean) ( %s != 0.0 )',
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| 83 | 'Double' : '%s',
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| 84 | 'Float' : '(GLfloat) %s',
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| 85 | 'Integer' : '__clampd_to_int(%s)'
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| 86 | },
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| 87 | 'GLclampf' : {
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| 88 | 'Boolean' : '(GLboolean) ( %s != 0.0f )',
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| 89 | 'Double' : '(GLdouble) %s',
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| 90 | 'Float' : '%s',
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| 91 | 'Integer' : '__clampf_to_int(%s)'
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| 92 | }
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| 93 | }
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| 94 |
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| 95 | types = [ "Boolean", "Double", "Float", "Integer" ]
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| 96 |
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| 97 | ctypes = {
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| 98 | 'Boolean' : 'GLboolean',
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| 99 | 'Double' : 'GLdouble',
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| 100 | 'Float' : 'GLfloat',
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| 101 | 'Integer' : 'GLint'
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| 102 | }
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| 103 |
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| 104 | apiutil.CopyrightC()
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| 105 |
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| 106 | print """
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| 107 | /* DO NOT EDIT - THIS FILE GENERATED BY state_get.txt AND THE state_get.py SCRIPT */
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| 108 | #include <stdio.h>
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| 109 | #include <math.h>
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| 110 |
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| 111 | #include "state.h"
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| 112 | #include "state/cr_statetypes.h"
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| 113 |
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| 114 | static GLint __clampd_to_int( GLdouble d )
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| 115 | {
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| 116 | /* -1.0 -> MIN_INT, 1.0 -> MAX_INT */
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| 117 | if ( d > 1.0 )
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| 118 | return 0x7fffffff;
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| 119 | if ( d < -1.0 )
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| 120 | return 0x80000000;
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| 121 | return (GLint) floor( d * 2147483647.5 );
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| 122 | }
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| 123 |
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| 124 | static GLint __clampf_to_int( GLfloat f )
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| 125 | {
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| 126 | /* -1.0f -> MIN_INT, 1.0f -> MAX_INT */
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| 127 | if ( f > 1.0f )
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| 128 | return 0x7fffffff;
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| 129 | if ( f < -1.0f )
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| 130 | return 0x80000000;
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| 131 | return (GLint) floor( f * 2147483647.5f );
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| 132 | }
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| 133 | """
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| 134 |
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| 135 | header = """
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| 136 | {
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| 137 | CRContext *g = GetCurrentContext();
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| 138 |
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| 139 | if (g->current.inBeginEnd)
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| 140 | {
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| 141 | crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
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| 142 | "glGet called in Begin/End");
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| 143 | return;
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| 144 | }
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| 145 |
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| 146 | if ( pname == GL_CURRENT_INDEX || pname == GL_CURRENT_COLOR ||
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| 147 | pname == GL_CURRENT_SECONDARY_COLOR_EXT ||
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| 148 | pname == GL_CURRENT_FOG_COORDINATE_EXT ||
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| 149 | pname == GL_CURRENT_NORMAL || pname == GL_EDGE_FLAG ||
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| 150 | pname == GL_CURRENT_TEXTURE_COORDS )
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| 151 | {
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| 152 | #if 0
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| 153 | crStateError(__LINE__,__FILE__, GL_INVALID_OPERATION,
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| 154 | "Unimplemented glGet of a 'current' value" );
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| 155 | #else
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| 156 | crStateCurrentRecover();/* &g->current, &sb->current, g->bitID );*/
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| 157 |
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| 158 | #endif
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| 159 | }
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| 160 |
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| 161 | switch ( pname ) {
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| 162 | """
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| 163 |
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| 164 | for rettype in types:
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| 165 | print ''
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| 166 | print 'void STATE_APIENTRY crStateGet%sv( GLenum pname, %s *params )' % ( rettype, ctypes[rettype] )
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| 167 | print header
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| 168 |
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| 169 | keys = params.keys()
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| 170 | keys.sort()
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| 171 | for pname in keys:
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| 172 | print '\t\tcase %s:' % pname
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| 173 | (srctype,fields) = params[pname]
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| 174 | try:
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| 175 | cvt = convert[srctype][rettype]
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| 176 | i = 0
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| 177 | for field in fields:
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| 178 | expr = cvt % field
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| 179 | print '\t\t\tparams[%d] = %s;' % (i,expr)
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| 180 | i += 1
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| 181 | except:
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| 182 | print '\t\t\tcrStateError(__LINE__,__FILE__,GL_INVALID_OPERATION, "Unimplemented glGet!");'
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| 183 | print "\t\t\tbreak;"
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| 184 |
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| 185 |
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| 186 | keys = extended_params.keys();
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| 187 | keys.sort()
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| 188 | for pname in keys:
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| 189 | (srctype,ifdef,fields) = extended_params[pname]
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| 190 | ext = ifdef[3:] # the extension name with the "GL_" prefix removed
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| 191 | #print '#ifdef %s' % ifdef
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| 192 | print '#ifdef CR_%s' % ext
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| 193 | print '\t\tcase %s:' % pname
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| 194 | if ext != 'OPENGL_VERSION_1_2':
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| 195 | print '\t\t\tif (g->extensions.%s) {' % ext
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| 196 | try:
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| 197 | cvt = convert[srctype][rettype]
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| 198 | i = 0
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| 199 | for field in fields:
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| 200 | expr = cvt % field
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| 201 | if field[0] == '%':
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| 202 | command = string.split(field, '%')
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| 203 | print '\t\t\t\t%s;' % command[1]
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| 204 | continue
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| 205 | elif ext != 'OPENGL_VERSION_1_2':
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| 206 | print '\t\t\t\tparams[%d] = %s;' % (i,expr)
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| 207 | else:
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| 208 | print '\t\t\tparams[%d] = %s;' % (i,expr)
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| 209 | i += 1
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| 210 | except:
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| 211 | print '\t\t\tcrStateError(__LINE__,__FILE__,GL_INVALID_OPERATION, "Unimplemented glGet!");'
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| 212 | if ext != 'OPENGL_VERSION_1_2':
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| 213 | print "\t\t\t}"
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| 214 | print "\t\t\telse {"
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| 215 | print '\t\t\t\tcrStateError(__LINE__,__FILE__,GL_INVALID_ENUM, "glGet%sv");' % rettype
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| 216 | print "\t\t\t}"
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| 217 | print "\t\t\tbreak;"
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| 218 | #print '#endif /* %s */' % ifdef
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| 219 | print '#endif /* CR_%s */' % ext
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| 220 |
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| 221 | print '\t\tdefault:'
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| 222 | print '\t\t\tcrStateError(__LINE__, __FILE__, GL_INVALID_ENUM, "glGet: Unknown enum: 0x%x", pname);'
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| 223 | print '\t\t\treturn;'
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| 224 | print '\t}'
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| 225 | print '}'
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