| 5098 |
clevermous |
1 |
#include "zgl.h" |
|
|
2 |
|
|
|
3 |
int glRenderMode(int mode) |
|
|
4 |
{ |
|
|
5 |
GLContext *c=gl_get_context(); |
|
|
6 |
int result=0; |
|
|
7 |
|
|
|
8 |
switch(c->render_mode) { |
|
|
9 |
case GL_RENDER: |
|
|
10 |
break; |
|
|
11 |
case GL_SELECT: |
|
|
12 |
if (c->select_overflow) { |
|
|
13 |
result=-c->select_hits; |
|
|
14 |
} else { |
|
|
15 |
result=c->select_hits; |
|
|
16 |
} |
|
|
17 |
c->select_overflow=0; |
|
|
18 |
c->select_ptr=c->select_buffer; |
|
|
19 |
c->name_stack_size=0; |
|
|
20 |
break; |
|
|
21 |
default: |
|
|
22 |
assert(0); |
|
|
23 |
} |
|
|
24 |
switch(mode) { |
|
|
25 |
case GL_RENDER: |
|
|
26 |
c->render_mode=GL_RENDER; |
|
|
27 |
break; |
|
|
28 |
case GL_SELECT: |
|
|
29 |
c->render_mode=GL_SELECT; |
|
|
30 |
assert( c->select_buffer != NULL); |
|
|
31 |
c->select_ptr=c->select_buffer; |
|
|
32 |
c->select_hits=0; |
|
|
33 |
c->select_overflow=0; |
|
|
34 |
c->select_hit=NULL; |
|
|
35 |
break; |
|
|
36 |
default: |
|
|
37 |
assert(0); |
|
|
38 |
} |
|
|
39 |
return result; |
|
|
40 |
} |
|
|
41 |
|
|
|
42 |
void glSelectBuffer(int size,unsigned int *buf) |
|
|
43 |
{ |
|
|
44 |
GLContext *c=gl_get_context(); |
|
|
45 |
|
|
|
46 |
assert(c->render_mode != GL_SELECT); |
|
|
47 |
|
|
|
48 |
c->select_buffer=buf; |
|
|
49 |
c->select_size=size; |
|
|
50 |
} |
|
|
51 |
|
|
|
52 |
|
|
|
53 |
void glopInitNames(GLContext *c,GLParam *p) |
|
|
54 |
{ |
|
|
55 |
if (c->render_mode == GL_SELECT) { |
|
|
56 |
c->name_stack_size=0; |
|
|
57 |
c->select_hit=NULL; |
|
|
58 |
} |
|
|
59 |
} |
|
|
60 |
|
|
|
61 |
void glopPushName(GLContext *c,GLParam *p) |
|
|
62 |
{ |
|
|
63 |
if (c->render_mode == GL_SELECT) { |
|
|
64 |
assert(c->name_stack_size |
|
|
65 |
c->name_stack[c->name_stack_size++]=p[1].i; |
|
|
66 |
c->select_hit=NULL; |
|
|
67 |
} |
|
|
68 |
} |
|
|
69 |
|
|
|
70 |
void glopPopName(GLContext *c,GLParam *p) |
|
|
71 |
{ |
|
|
72 |
if (c->render_mode == GL_SELECT) { |
|
|
73 |
assert(c->name_stack_size>0); |
|
|
74 |
c->name_stack_size--; |
|
|
75 |
c->select_hit=NULL; |
|
|
76 |
} |
|
|
77 |
} |
|
|
78 |
|
|
|
79 |
void glopLoadName(GLContext *c,GLParam *p) |
|
|
80 |
{ |
|
|
81 |
if (c->render_mode == GL_SELECT) { |
|
|
82 |
assert(c->name_stack_size>0); |
|
|
83 |
c->name_stack[c->name_stack_size-1]=p[1].i; |
|
|
84 |
c->select_hit=NULL; |
|
|
85 |
} |
|
|
86 |
} |
|
|
87 |
|
|
|
88 |
void gl_add_select(GLContext *c,unsigned int zmin,unsigned int zmax) |
|
|
89 |
{ |
|
|
90 |
unsigned int *ptr; |
|
|
91 |
int n,i; |
|
|
92 |
|
|
|
93 |
if (!c->select_overflow) { |
|
|
94 |
if (c->select_hit==NULL) { |
|
|
95 |
n=c->name_stack_size; |
|
|
96 |
if ((c->select_ptr-c->select_buffer+3+n) > |
|
|
97 |
c->select_size) { |
|
|
98 |
c->select_overflow=1; |
|
|
99 |
} else { |
|
|
100 |
ptr=c->select_ptr; |
|
|
101 |
c->select_hit=ptr; |
|
|
102 |
*ptr++=c->name_stack_size; |
|
|
103 |
*ptr++=zmin; |
|
|
104 |
*ptr++=zmax; |
|
|
105 |
for(i=0;iname_stack[i]; |
|
|
106 |
c->select_ptr=ptr; |
|
|
107 |
c->select_hits++; |
|
|
108 |
} |
|
|
109 |
} else { |
|
|
110 |
if (zminselect_hit[1]) c->select_hit[1]=zmin; |
|
|
111 |
if (zmax>c->select_hit[2]) c->select_hit[2]=zmax; |
|
|
112 |
} |
|
|
113 |
} |
|
|
114 |
} |