1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
|
#include "zgl.h"
static char *op_table_str[]=
{
#define ADD_OP(a,b,c) "gl" #a " " #c,
#include "opinfo.h"
};
static void (*op_table_func[])(GLContext *,GLParam *)=
{
#define ADD_OP(a,b,c) glop ## a ,
#include "opinfo.h"
};
static int op_table_size[]=
{
#define ADD_OP(a,b,c) b + 1 ,
#include "opinfo.h"
};
GLContext *gl_get_context(void)
{
return gl_ctx;
}
static GLList *find_list(GLContext *c,unsigned int list)
{
return c->shared_state.lists[list];
}
static void delete_list(GLContext *c,int list)
{
GLParamBuffer *pb,*pb1;
GLList *l;
l=find_list(c,list);
gl_assert(l != NULL);
/* free param buffer */
pb=l->first_op_buffer;
while (pb!=NULL) {
pb1=pb->next;
gl_free(pb);
pb=pb1;
}
gl_free(l);
c->shared_state.lists[list]=NULL;
}
static GLList *alloc_list(GLContext *c,int list)
{
GLList *l;
GLParamBuffer *ob;
l=gl_zalloc(sizeof(GLList));
ob=gl_zalloc(sizeof(GLParamBuffer));
ob->next=NULL;
l->first_op_buffer=ob;
ob->ops[0].op=OP_EndList;
c->shared_state.lists[list]=l;
return l;
}
#ifndef NO_STDIO
void gl_print_op(FILE *f,GLParam *p)
{
int op;
char *s;
op=p[0].op;
p++;
s=op_table_str[op];
while (*s != 0) {
if (*s == '%') {
s++;
switch (*s++) {
case 'f':
fprintf(f,"%g",p[0].f);
break;
default:
fprintf(f,"%d",p[0].i);
break;
}
p++;
} else {
fputc(*s,f);
s++;
}
}
fprintf(f,"\n");
}
#endif
void gl_compile_op(GLContext *c,GLParam *p)
{
int op,op_size;
GLParamBuffer *ob,*ob1;
int index,i;
op=p[0].op;
op_size=op_table_size[op];
index=c->current_op_buffer_index;
ob=c->current_op_buffer;
/* we should be able to add a NextBuffer opcode */
if ((index + op_size) > (OP_BUFFER_MAX_SIZE-2)) {
ob1=gl_zalloc(sizeof(GLParamBuffer));
ob1->next=NULL;
ob->next=ob1;
ob->ops[index].op=OP_NextBuffer;
ob->ops[index+1].p=(void *)ob1;
c->current_op_buffer=ob1;
ob=ob1;
index=0;
}
for(i=0;i<op_size;i++) {
ob->ops[index]=p[i];
index++;
}
c->current_op_buffer_index=index;
}
void gl_add_op(GLParam *p)
{
GLContext *c=gl_get_context();
int op;
op=p[0].op;
if (c->exec_flag) {
op_table_func[op](c,p);
}
if (c->compile_flag) {
gl_compile_op(c,p);
}
#ifndef NO_CLIBRARY
if (c->print_flag) {
gl_print_op(stderr,p);
}
#endif
}
/* this opcode is never called directly */
void glopEndList(GLContext *c,GLParam *p)
{
(void) c;
(void) p;
gl_assert(0);
}
/* this opcode is never called directly */
void glopNextBuffer(GLContext *c,GLParam *p)
{
(void) c;
(void) p;
gl_assert(0);
}
void glopCallList(GLContext *c,GLParam *p)
{
GLList *l;
int list,op;
list=p[1].ui;
l=find_list(c,list);
if (l == NULL) gl_fatal_error("list %d not defined",list);
p=l->first_op_buffer->ops;
while (1) {
op=p[0].op;
if (op == OP_EndList) break;
if (op == OP_NextBuffer) {
p=(GLParam *)p[1].p;
} else {
op_table_func[op](c,p);
p+=op_table_size[op];
}
}
}
void glNewList(unsigned int list,int mode)
{
GLList *l;
GLContext *c=gl_get_context();
gl_assert(mode == GL_COMPILE || mode == GL_COMPILE_AND_EXECUTE);
gl_assert(c->compile_flag == 0);
l=find_list(c,list);
if (l!=NULL) delete_list(c,list);
l=alloc_list(c,list);
c->current_op_buffer=l->first_op_buffer;
c->current_op_buffer_index=0;
c->compile_flag=1;
c->exec_flag=(mode == GL_COMPILE_AND_EXECUTE);
}
void glEndList(void)
{
GLContext *c=gl_get_context();
GLParam p[1];
gl_assert(c->compile_flag == 1);
/* end of list */
p[0].op=OP_EndList;
gl_compile_op(c,p);
c->compile_flag=0;
c->exec_flag=1;
}
int glIsList(unsigned int list)
{
GLContext *c=gl_get_context();
GLList *l;
l=find_list(c,list);
return (l != NULL);
}
unsigned int glGenLists(int range)
{
GLContext *c=gl_get_context();
int count,i,list;
GLList **lists;
lists=c->shared_state.lists;
count=0;
for(i=0;i<MAX_DISPLAY_LISTS;i++) {
if (lists[i]==NULL) {
count++;
if (count == range) {
list=i-range+1;
for(i=0;i<range;i++) {
alloc_list(c,list+i);
}
return list;
}
} else {
count=0;
}
}
return 0;
}
|
