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# Copyright (c) 2001, Stanford University
# All rights reserved.
#
# See the file LICENSE.txt for information on redistributing this software.
from __future__ import print_function
import sys, re, string
import apiutil
line_re = re.compile (r'^(\S+)\s+(GL_\S+)\s+(.*)\s*$')
extensions_line_re = re.compile(r'^(\S+)\s+(GL_\S+)\s+(GL_\S+)\s+(.*)\s*$')
params = {}
extended_params = {}
input = open( sys.argv[2]+"/state_get.txt", 'r' )
for line in input.readlines():
if line[0] == '#':
continue
match = line_re.match( line )
if match:
type = match.group(1)
pname = match.group(2)
fields = match.group(3).split()
params[pname] = ( type, fields )
input = open( sys.argv[2]+"/state_extensions_get.txt", 'r' )
for line in input.readlines():
if line[0] == '#':
continue
match = extensions_line_re.match( line )
if match:
type = match.group(1)
pname = match.group(2)
ifdef = match.group(3)
fields = match.group(4).split()
extended_params[pname] = ( type, ifdef, fields )
convert = {
'GLenum' : {
'Boolean' : '(GLboolean) (%s != 0)',
'Double' : '(GLdouble) %s',
'Float' : '(GLfloat) %s',
'Integer' : '(GLint) %s'
},
'GLboolean' : {
'Boolean' : '(GLboolean) (%s != 0)',
'Double' : '(GLdouble) %s',
'Float' : '(GLfloat) %s',
'Integer' : '(GLint) %s'
},
'GLint' : {
'Boolean' : '(GLboolean) (%s != 0)',
'Double' : '(GLdouble) %s',
'Float' : '(GLfloat) %s',
'Integer' : '(GLint) %s'
},
'GLuint' : {
'Boolean' : '(GLboolean) (%s != 0)',
'Double' : '(GLdouble) %s',
'Float' : '(GLfloat) %s',
'Integer' : '(GLint) %s'
},
'GLfloat' : {
'Boolean' : '(GLboolean) (%s != 0.0f)',
'Double' : '(GLdouble) %s',
'Float' : '%s',
'Integer' : '(GLint) %s'
},
'GLdouble' : {
'Boolean' : '(GLboolean) (%s != 0.0)',
'Double' : '%s',
'Float' : '(GLfloat) %s',
'Integer' : '(GLint) %s'
},
'GLdefault' : {
'Boolean' : '(GLboolean) (%s != (GLdefault) 0.0)',
'Double' : '(GLdouble) %s',
'Float' : '(GLfloat) %s',
'Integer' : '(GLint) %s'
},
'GLclampd' : {
'Boolean' : '(GLboolean) (%s != 0.0)',
'Double' : '%s',
'Float' : '(GLfloat) %s',
'Integer' : '__clampd_to_int(%s)'
},
'GLclampf' : {
'Boolean' : '(GLboolean) (%s != 0.0f)',
'Double' : '(GLdouble) %s',
'Float' : '%s',
'Integer' : '__clampf_to_int(%s)'
}
}
types = [ "Boolean", "Double", "Float", "Integer" ]
ctypes = {
'Boolean' : 'GLboolean',
'Double' : 'GLdouble',
'Float' : 'GLfloat',
'Integer' : 'GLint'
}
apiutil.CopyrightC()
print("""
/* DO NOT EDIT - THIS FILE GENERATED BY state_get.txt AND THE state_get.py SCRIPT */
#include <stdio.h>
#include <math.h>
#include "state.h"
#include "state/cr_statetypes.h"
static GLint __clampd_to_int(GLdouble d)
{
/* -1.0 -> MIN_INT, 1.0 -> MAX_INT */
if (d > 1.0)
return 0x7fffffff;
if (d < -1.0)
return 0x80000000;
return (GLint) floor(d * 2147483647.5);
}
static GLint __clampf_to_int(GLfloat f)
{
/* -1.0f -> MIN_INT, 1.0f -> MAX_INT */
if (f > 1.0f)
return 0x7fffffff;
if (f < -1.0f)
return 0x80000000;
return (GLint) floor(f * 2147483647.5f);
}
static GLenum __getDrawBuffer(CRContext *g)
{
return g->framebufferobject.drawFB ? g->framebufferobject.drawFB->drawbuffer[0] : g->buffer.drawBuffer;
}
static GLenum __getReadBuffer(CRContext *g)
{
return g->framebufferobject.readFB ? g->framebufferobject.readFB->readbuffer : g->buffer.readBuffer;
}
""")
header = """
{
CRContext *g = GetCurrentContext();
if (g->current.inBeginEnd)
{
crStateError(__LINE__, __FILE__, GL_INVALID_OPERATION,
"glGet called in Begin/End");
return;
}
if (pname == GL_CURRENT_INDEX || pname == GL_CURRENT_COLOR ||
pname == GL_CURRENT_SECONDARY_COLOR_EXT ||
pname == GL_CURRENT_FOG_COORDINATE_EXT ||
pname == GL_CURRENT_NORMAL || pname == GL_EDGE_FLAG ||
pname == GL_CURRENT_TEXTURE_COORDS )
{
#if 0
crStateError(__LINE__,__FILE__, GL_INVALID_OPERATION,
"Unimplemented glGet of a 'current' value" );
#else
crStateCurrentRecover();/* &g->current, &sb->current, g->bitID );*/
#endif
}
switch (pname) {
"""
for rettype in types:
print('')
print('void STATE_APIENTRY crStateGet%sv( GLenum pname, %s *params )' % ( rettype, ctypes[rettype] ))
print(header)
for pname in sorted(params.keys()):
print('\t\tcase %s:' % pname)
(srctype,fields) = params[pname]
try:
cvt = convert[srctype][rettype]
i = 0
for field in fields:
expr = cvt % field
print('\t\t\tparams[%d] = %s;' % (i,expr))
i += 1
except:
print('\t\t\tcrStateError(__LINE__,__FILE__,GL_INVALID_OPERATION, "Unimplemented glGet!");')
print("\t\t\tbreak;")
for pname in sorted(extended_params.keys()):
(srctype,ifdef,fields) = extended_params[pname]
ext = ifdef[3:] # the extension name with the "GL_" prefix removed
#print '#ifdef %s' % ifdef
print('#ifdef CR_%s' % ext)
print('\t\tcase %s:' % pname)
if ext != 'OPENGL_VERSION_1_2':
print('\t\t\tif (g->extensions.%s) {' % ext)
try:
cvt = convert[srctype][rettype]
i = 0
for field in fields:
expr = cvt % field
if field[0] == '%':
command = string.split(field, '%')
print('\t\t\t\t%s;' % command[1])
continue
elif ext != 'OPENGL_VERSION_1_2':
print('\t\t\t\tparams[%d] = %s;' % (i,expr))
else:
print('\t\t\tparams[%d] = %s;' % (i,expr))
i += 1
except:
print('\t\t\tcrStateError(__LINE__,__FILE__,GL_INVALID_OPERATION, "Unimplemented glGet!");')
if ext != 'OPENGL_VERSION_1_2':
print("\t\t\t}")
print("\t\t\telse {")
print('\t\t\t\tcrStateError(__LINE__,__FILE__,GL_INVALID_ENUM, "glGet%sv");' % rettype)
print("\t\t\t}")
print("\t\t\tbreak;")
#print '#endif /* %s */' % ifdef
print('#endif /* CR_%s */' % ext)
print('\t\tdefault:')
print('\t\t\tcrStateError(__LINE__, __FILE__, GL_INVALID_ENUM, "glGet: Unknown enum: 0x%x", pname);')
print('\t\t\treturn;')
print('\t}')
print('}')
from get_components import *
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