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
|
/*
* Mesa 3-D graphics library
*
* Copyright (C) 2010 VMware, Inc. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "context.h"
#include "version.h"
/**
* Examine enabled GL extensions to determine GL version.
* Return major and minor version numbers.
*/
static void
compute_version(const GLcontext *ctx, GLuint *major, GLuint *minor)
{
const GLboolean ver_1_3 = (ctx->Extensions.ARB_multisample &&
ctx->Extensions.ARB_multitexture &&
ctx->Extensions.ARB_texture_border_clamp &&
ctx->Extensions.ARB_texture_compression &&
ctx->Extensions.ARB_texture_cube_map &&
ctx->Extensions.EXT_texture_env_add &&
ctx->Extensions.ARB_texture_env_combine &&
ctx->Extensions.ARB_texture_env_dot3);
const GLboolean ver_1_4 = (ver_1_3 &&
ctx->Extensions.ARB_depth_texture &&
ctx->Extensions.ARB_shadow &&
ctx->Extensions.ARB_texture_env_crossbar &&
ctx->Extensions.ARB_texture_mirrored_repeat &&
ctx->Extensions.ARB_window_pos &&
ctx->Extensions.EXT_blend_color &&
ctx->Extensions.EXT_blend_func_separate &&
ctx->Extensions.EXT_blend_minmax &&
ctx->Extensions.EXT_blend_subtract &&
ctx->Extensions.EXT_fog_coord &&
ctx->Extensions.EXT_multi_draw_arrays &&
ctx->Extensions.EXT_point_parameters &&
ctx->Extensions.EXT_secondary_color &&
ctx->Extensions.EXT_stencil_wrap &&
ctx->Extensions.EXT_texture_lod_bias &&
ctx->Extensions.SGIS_generate_mipmap);
const GLboolean ver_1_5 = (ver_1_4 &&
ctx->Extensions.ARB_occlusion_query &&
ctx->Extensions.ARB_vertex_buffer_object &&
ctx->Extensions.EXT_shadow_funcs);
const GLboolean ver_2_0 = (ver_1_5 &&
ctx->Extensions.ARB_draw_buffers &&
ctx->Extensions.ARB_point_sprite &&
ctx->Extensions.ARB_shader_objects &&
ctx->Extensions.ARB_vertex_shader &&
ctx->Extensions.ARB_fragment_shader &&
ctx->Extensions.ARB_texture_non_power_of_two &&
ctx->Extensions.EXT_blend_equation_separate &&
/* Technically, 2.0 requires the functionality
* of the EXT version. Enable 2.0 if either
* extension is available, and assume that a
* driver that only exposes the ATI extension
* will fallback to software when necessary.
*/
(ctx->Extensions.EXT_stencil_two_side
|| ctx->Extensions.ATI_separate_stencil));
const GLboolean ver_2_1 = (ver_2_0 &&
ctx->Extensions.ARB_shading_language_120 &&
ctx->Extensions.EXT_pixel_buffer_object &&
ctx->Extensions.EXT_texture_sRGB);
if (ver_2_1) {
*major = 2;
*minor = 1;
}
else if (ver_2_0) {
*major = 2;
*minor = 0;
}
else if (ver_1_5) {
*major = 1;
*minor = 5;
}
else if (ver_1_4) {
*major = 1;
*minor = 4;
}
else if (ver_1_3) {
*major = 1;
*minor = 3;
}
else {
*major = 1;
*minor = 2;
}
}
/**
* Set the context's VersionMajor, VersionMinor, VersionString fields.
* This should only be called once as part of context initialization.
*/
void
_mesa_compute_version(GLcontext *ctx)
{
static const int max = 100;
compute_version(ctx, &ctx->VersionMajor, &ctx->VersionMinor);
ctx->VersionString = (char *) malloc(max);
if (ctx->VersionString) {
snprintf(ctx->VersionString, max, "%u.%u Mesa " MESA_VERSION_STRING,
ctx->VersionMajor, ctx->VersionMinor);
}
}
|
