| 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 | from __future__ import print_function
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| 7 | import sys, re, string
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| 8 | import apiutil
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| 9 |
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| 10 | line_re = re.compile (r'^(\S+)\s+(GL_\S+)\s+(.*)\s*$')
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| 11 | extensions_line_re = re.compile(r'^(\S+)\s+(GL_\S+)\s+(GL_\S+)\s+(.*)\s*$')
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| 12 |
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| 13 | params = {}
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| 14 | extended_params = {}
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| 15 |
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| 16 | input = open( sys.argv[2]+"/state_get.txt", 'r' )
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| 17 | for line in input.readlines():
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| 18 | if line[0] == '#':
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| 19 | continue
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| 20 | match = line_re.match( line )
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| 21 | if match:
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| 22 | type = match.group(1)
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| 23 | pname = match.group(2)
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| 24 | fields = match.group(3).split()
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| 25 | params[pname] = ( type, fields )
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| 26 |
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| 27 | input = open( sys.argv[2]+"/state_extensions_get.txt", 'r' )
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| 28 | for line in input.readlines():
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| 29 | if line[0] == '#':
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| 30 | continue
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| 31 | match = extensions_line_re.match( line )
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| 32 | if match:
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| 33 | type = match.group(1)
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| 34 | pname = match.group(2)
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| 35 | ifdef = match.group(3)
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| 36 | fields = match.group(4).split()
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| 37 | extended_params[pname] = ( type, ifdef, fields )
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| 38 |
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| 39 | convert = {
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| 40 | 'GLenum' : {
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| 41 | 'Boolean' : '(GLboolean) (%s != 0)',
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| 42 | 'Double' : '(GLdouble) %s',
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| 43 | 'Float' : '(GLfloat) %s',
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| 44 | 'Integer' : '(GLint) %s'
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| 45 | },
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| 46 | 'GLboolean' : {
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| 47 | 'Boolean' : '(GLboolean) (%s != 0)',
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| 48 | 'Double' : '(GLdouble) %s',
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| 49 | 'Float' : '(GLfloat) %s',
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| 50 | 'Integer' : '(GLint) %s'
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| 51 | },
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| 52 | 'GLint' : {
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| 53 | 'Boolean' : '(GLboolean) (%s != 0)',
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| 54 | 'Double' : '(GLdouble) %s',
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| 55 | 'Float' : '(GLfloat) %s',
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| 56 | 'Integer' : '(GLint) %s'
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| 57 | },
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| 58 | 'GLuint' : {
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| 59 | 'Boolean' : '(GLboolean) (%s != 0)',
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| 60 | 'Double' : '(GLdouble) %s',
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| 61 | 'Float' : '(GLfloat) %s',
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| 62 | 'Integer' : '(GLint) %s'
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| 63 | },
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| 64 | 'GLfloat' : {
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| 65 | 'Boolean' : '(GLboolean) (%s != 0.0f)',
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| 66 | 'Double' : '(GLdouble) %s',
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| 67 | 'Float' : '%s',
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| 68 | 'Integer' : '(GLint) %s'
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| 69 | },
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| 70 | 'GLdouble' : {
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| 71 | 'Boolean' : '(GLboolean) (%s != 0.0)',
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| 72 | 'Double' : '%s',
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| 73 | 'Float' : '(GLfloat) %s',
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| 74 | 'Integer' : '(GLint) %s'
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| 75 | },
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| 76 | 'GLdefault' : {
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| 77 | 'Boolean' : '(GLboolean) (%s != (GLdefault) 0.0)',
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| 78 | 'Double' : '(GLdouble) %s',
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| 79 | 'Float' : '(GLfloat) %s',
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| 80 | 'Integer' : '(GLint) %s'
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| 81 | },
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| 82 | 'GLclampd' : {
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| 83 | 'Boolean' : '(GLboolean) (%s != 0.0)',
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| 84 | 'Double' : '%s',
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| 85 | 'Float' : '(GLfloat) %s',
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| 86 | 'Integer' : '__clampd_to_int(%s)'
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| 87 | },
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| 88 | 'GLclampf' : {
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| 89 | 'Boolean' : '(GLboolean) (%s != 0.0f)',
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| 90 | 'Double' : '(GLdouble) %s',
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| 91 | 'Float' : '%s',
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| 92 | 'Integer' : '__clampf_to_int(%s)'
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| 93 | }
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| 94 | }
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| 95 |
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| 96 | types = [ "Boolean", "Double", "Float", "Integer" ]
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| 97 |
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| 98 | ctypes = {
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| 99 | 'Boolean' : 'GLboolean',
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| 100 | 'Double' : 'GLdouble',
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| 101 | 'Float' : 'GLfloat',
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| 102 | 'Integer' : 'GLint'
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| 103 | }
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| 104 |
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| 105 | apiutil.CopyrightC()
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| 106 |
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| 107 | print("""
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| 108 | /* DO NOT EDIT - THIS FILE GENERATED BY state_get.txt AND THE state_get.py SCRIPT */
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| 109 | #include <stdio.h>
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| 110 | #include <math.h>
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| 111 |
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| 112 | #include "state.h"
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| 113 | #include "state/cr_statetypes.h"
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| 114 |
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| 115 | static GLint __clampd_to_int(GLdouble d)
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| 116 | {
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| 117 | /* -1.0 -> MIN_INT, 1.0 -> MAX_INT */
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| 118 | if (d > 1.0)
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| 119 | return 0x7fffffff;
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| 120 | if (d < -1.0)
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| 121 | return 0x80000000;
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| 122 | return (GLint) floor(d * 2147483647.5);
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| 123 | }
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| 124 |
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| 125 | static GLint __clampf_to_int(GLfloat f)
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| 126 | {
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| 127 | /* -1.0f -> MIN_INT, 1.0f -> MAX_INT */
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| 128 | if (f > 1.0f)
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| 129 | return 0x7fffffff;
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| 130 | if (f < -1.0f)
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| 131 | return 0x80000000;
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| 132 | return (GLint) floor(f * 2147483647.5f);
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| 133 | }
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| 134 |
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| 135 | static GLenum __getDrawBuffer(CRContext *g)
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| 136 | {
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| 137 | return g->framebufferobject.drawFB ? g->framebufferobject.drawFB->drawbuffer[0] : g->buffer.drawBuffer;
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| 138 | }
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| 139 |
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| 140 | static GLenum __getReadBuffer(CRContext *g)
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| 141 | {
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| 142 | return g->framebufferobject.readFB ? g->framebufferobject.readFB->readbuffer : g->buffer.readBuffer;
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| 143 | }
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| 144 | """)
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| 145 |
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| 146 | header = """
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| 147 | {
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| 148 | CRContext *g = GetCurrentContext();
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| 149 |
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| 150 | if (g->current.inBeginEnd)
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| 151 | {
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| 152 | crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
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| 153 | "glGet called in Begin/End");
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| 154 | return;
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| 155 | }
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| 156 |
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| 157 | if (pname == GL_CURRENT_INDEX || pname == GL_CURRENT_COLOR ||
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| 158 | pname == GL_CURRENT_SECONDARY_COLOR_EXT ||
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| 159 | pname == GL_CURRENT_FOG_COORDINATE_EXT ||
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| 160 | pname == GL_CURRENT_NORMAL || pname == GL_EDGE_FLAG ||
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| 161 | pname == GL_CURRENT_TEXTURE_COORDS )
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| 162 | {
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| 163 | #if 0
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| 164 | crStateError(__LINE__,__FILE__, GL_INVALID_OPERATION,
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| 165 | "Unimplemented glGet of a 'current' value" );
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| 166 | #else
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| 167 | crStateCurrentRecover();/* &g->current, &sb->current, g->bitID );*/
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| 168 |
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| 169 | #endif
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| 170 | }
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| 171 |
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| 172 | switch (pname) {
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| 173 | """
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| 174 |
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| 175 | for rettype in types:
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| 176 | print('')
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| 177 | print('void STATE_APIENTRY crStateGet%sv( GLenum pname, %s *params )' % ( rettype, ctypes[rettype] ))
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| 178 | print(header)
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| 179 |
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| 180 | for pname in sorted(params.keys()):
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| 181 | print('\t\tcase %s:' % pname)
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| 182 | (srctype,fields) = params[pname]
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| 183 | try:
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| 184 | cvt = convert[srctype][rettype]
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| 185 | i = 0
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| 186 | for field in fields:
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| 187 | expr = cvt % field
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| 188 | print('\t\t\tparams[%d] = %s;' % (i,expr))
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| 189 | i += 1
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| 190 | except:
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| 191 | print('\t\t\tcrStateError(__LINE__,__FILE__,GL_INVALID_OPERATION, "Unimplemented glGet!");')
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| 192 | print("\t\t\tbreak;")
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| 193 |
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| 194 |
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| 195 | for pname in sorted(extended_params.keys()):
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| 196 | (srctype,ifdef,fields) = extended_params[pname]
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| 197 | ext = ifdef[3:] # the extension name with the "GL_" prefix removed
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| 198 | #print '#ifdef %s' % ifdef
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| 199 | print('#ifdef CR_%s' % ext)
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| 200 | print('\t\tcase %s:' % pname)
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| 201 | if ext != 'OPENGL_VERSION_1_2':
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| 202 | print('\t\t\tif (g->extensions.%s) {' % ext)
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| 203 | try:
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| 204 | cvt = convert[srctype][rettype]
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| 205 | i = 0
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| 206 | for field in fields:
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| 207 | expr = cvt % field
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| 208 | if field[0] == '%':
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| 209 | command = string.split(field, '%')
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| 210 | print('\t\t\t\t%s;' % command[1])
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| 211 | continue
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| 212 | elif ext != 'OPENGL_VERSION_1_2':
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| 213 | print('\t\t\t\tparams[%d] = %s;' % (i,expr))
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| 214 | else:
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| 215 | print('\t\t\tparams[%d] = %s;' % (i,expr))
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| 216 | i += 1
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| 217 | except:
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| 218 | print('\t\t\tcrStateError(__LINE__,__FILE__,GL_INVALID_OPERATION, "Unimplemented glGet!");')
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| 219 | if ext != 'OPENGL_VERSION_1_2':
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| 220 | print("\t\t\t}")
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| 221 | print("\t\t\telse {")
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| 222 | print('\t\t\t\tcrStateError(__LINE__,__FILE__,GL_INVALID_ENUM, "glGet%sv");' % rettype)
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| 223 | print("\t\t\t}")
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| 224 | print("\t\t\tbreak;")
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| 225 | #print '#endif /* %s */' % ifdef
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| 226 | print('#endif /* CR_%s */' % ext)
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| 227 |
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| 228 | print('\t\tdefault:')
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| 229 | print('\t\t\tcrStateError(__LINE__, __FILE__, GL_INVALID_ENUM, "glGet: Unknown enum: 0x%x", pname);')
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| 230 | print('\t\t\treturn;')
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| 231 | print('\t}')
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| 232 | print('}')
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| 233 |
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| 234 | from get_components import *
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