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
|
/* os2_glx.c */
#include <stdio.h>
#include <string.h>
#include <malloc.h>
#include "gl/gl.h"
#include "WarpGL.h"
#include "GL/os2mesa.h"
#define POKA 0
/* global current HDC */
XVisualInfo *wglDescribePixelFormat(int iPixelFormat);
extern HDC XHDC;
extern HWND XHWND;
//extern HPS hpsCurrent;
extern HAB hab; /* PM anchor block handle */
GLXContext
glXCreateContext(HPS hps, XVisualInfo * visinfo,
GLXContext share, Bool direct)
{
/* KLUDGE: GLX really expects a display pointer to be passed
in as the first parameter, but Win32 needs an HDC instead,
so BE SURE that the global XHDC is set before calling this
routine. */
HGLRC context;
context = wglCreateContext(XHDC,hps,hab);
/* Since direct rendering is implicit, the direct flag is
ignored. */
return context;
}
int
glXGetConfig(XVisualInfo * visual, int attrib, int *value)
{
if (!visual)
return GLX_BAD_VISUAL;
switch (attrib) {
case GLX_USE_GL:
if (visual->dwFlags & (PFD_SUPPORT_OPENGL | PFD_DRAW_TO_WINDOW)) {
/* XXX Brad's Matrix Millenium II has problems creating
color index windows in 24-bit mode (lead to GDI crash)
and 32-bit mode (lead to black window). The cColorBits
filed of the PIXELFORMATDESCRIPTOR returned claims to
have 24 and 32 bits respectively of color indices. 2^24
and 2^32 are ridiculously huge writable colormaps.
Assume that if we get back a color index
PIXELFORMATDESCRIPTOR with 24 or more bits, the
PIXELFORMATDESCRIPTOR doesn't really work and skip it.
-mjk */
if (visual->iPixelType == PFD_TYPE_COLORINDEX
&& visual->cColorBits >= 24) {
*value = 0;
} else {
*value = 1;
}
} else {
*value = 0;
}
break;
case GLX_BUFFER_SIZE:
/* KLUDGE: if we're RGBA, return the number of bits/pixel,
otherwise, return 8 (we guessed at 256 colors in CI
mode). */
if (visual->iPixelType == PFD_TYPE_RGBA)
*value = visual->cColorBits;
else
*value = 8;
break;
case GLX_LEVEL:
/* The bReserved flag of the pfd contains the
overlay/underlay info. */
*value = visual->bReserved;
break;
case GLX_RGBA:
*value = visual->iPixelType == PFD_TYPE_RGBA;
break;
case GLX_DOUBLEBUFFER:
*value = visual->dwFlags & PFD_DOUBLEBUFFER;
break;
case GLX_STEREO:
*value = visual->dwFlags & PFD_STEREO;
break;
case GLX_AUX_BUFFERS:
*value = visual->cAuxBuffers;
break;
case GLX_RED_SIZE:
*value = visual->cRedBits;
break;
case GLX_GREEN_SIZE:
*value = visual->cGreenBits;
break;
case GLX_BLUE_SIZE:
*value = visual->cBlueBits;
break;
case GLX_ALPHA_SIZE:
*value = visual->cAlphaBits;
break;
case GLX_DEPTH_SIZE:
*value = visual->cDepthBits;
break;
case GLX_STENCIL_SIZE:
*value = visual->cStencilBits;
break;
case GLX_ACCUM_RED_SIZE:
*value = visual->cAccumRedBits;
break;
case GLX_ACCUM_GREEN_SIZE:
*value = visual->cAccumGreenBits;
break;
case GLX_ACCUM_BLUE_SIZE:
*value = visual->cAccumBlueBits;
break;
case GLX_ACCUM_ALPHA_SIZE:
*value = visual->cAccumAlphaBits;
break;
#if POKA == 100
#endif /* POKA == 100 */
default:
return GLX_BAD_ATTRIB;
}
return 0;
}
XVisualInfo * glXChooseVisual(int mode)
{ int imode = 2;
if(mode & GLUT_DOUBLE)
imode = 1;
return
wglDescribePixelFormat(imode);
}
#if POKA
#endif /* POKA */
|
