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
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
|
/*
* 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 "imports.h"
#include "mtypes.h"
#include "version.h"
#include "git_sha1.h"
/**
* Examine enabled GL extensions to determine GL version.
* Return major and minor version numbers.
*/
static void
compute_version(struct gl_context *ctx)
{
GLuint major, minor;
static const int max = 100;
const GLboolean ver_1_3 = (ctx->Extensions.ARB_multitexture &&
ctx->Extensions.ARB_texture_border_clamp &&
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_point_parameters &&
ctx->Extensions.EXT_secondary_color &&
ctx->Extensions.EXT_stencil_wrap &&
ctx->Extensions.EXT_texture_lod_bias);
const GLboolean ver_1_5 = (ver_1_4 &&
ctx->Extensions.ARB_occlusion_query &&
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->Const.GLSLVersion >= 120 &&
ctx->Extensions.EXT_pixel_buffer_object &&
ctx->Extensions.EXT_texture_sRGB);
const GLboolean ver_3_0 = (ver_2_1 &&
ctx->Extensions.ARB_color_buffer_float &&
ctx->Extensions.ARB_depth_buffer_float &&
ctx->Extensions.ARB_half_float_pixel &&
ctx->Extensions.ARB_map_buffer_range &&
ctx->Extensions.ARB_texture_float &&
ctx->Extensions.ARB_texture_rg &&
ctx->Extensions.ARB_texture_compression_rgtc &&
ctx->Extensions.APPLE_vertex_array_object &&
ctx->Extensions.EXT_draw_buffers2 &&
ctx->Extensions.EXT_framebuffer_blit &&
ctx->Extensions.EXT_framebuffer_multisample &&
ctx->Extensions.EXT_framebuffer_object &&
ctx->Extensions.EXT_framebuffer_sRGB &&
ctx->Extensions.EXT_packed_depth_stencil &&
ctx->Extensions.EXT_packed_float &&
ctx->Extensions.EXT_texture_array &&
ctx->Extensions.EXT_texture_integer &&
ctx->Extensions.EXT_texture_shared_exponent &&
ctx->Extensions.EXT_transform_feedback &&
ctx->Extensions.NV_conditional_render);
const GLboolean ver_3_1 = (ver_3_0 &&
ctx->Extensions.ARB_copy_buffer &&
ctx->Extensions.ARB_draw_instanced &&
ctx->Extensions.ARB_texture_buffer_object &&
ctx->Extensions.ARB_uniform_buffer_object &&
ctx->Extensions.EXT_texture_snorm &&
ctx->Extensions.NV_primitive_restart &&
ctx->Extensions.NV_texture_rectangle &&
ctx->Const.MaxVertexTextureImageUnits >= 16);
const GLboolean ver_3_2 = (ver_3_1 &&
ctx->Extensions.ARB_depth_clamp &&
ctx->Extensions.ARB_draw_elements_base_vertex &&
ctx->Extensions.ARB_fragment_coord_conventions &&
ctx->Extensions.ARB_geometry_shader4 &&
ctx->Extensions.EXT_provoking_vertex &&
ctx->Extensions.ARB_seamless_cube_map &&
ctx->Extensions.ARB_sync &&
ctx->Extensions.ARB_texture_multisample &&
ctx->Extensions.EXT_vertex_array_bgra);
const GLboolean ver_3_3 = (ver_3_2 &&
ctx->Extensions.ARB_blend_func_extended &&
ctx->Extensions.ARB_explicit_attrib_location &&
ctx->Extensions.ARB_instanced_arrays &&
ctx->Extensions.ARB_occlusion_query2 &&
ctx->Extensions.ARB_sampler_objects &&
ctx->Extensions.ARB_texture_rgb10_a2ui &&
ctx->Extensions.ARB_timer_query &&
ctx->Extensions.ARB_vertex_type_2_10_10_10_rev &&
ctx->Extensions.EXT_texture_swizzle);
if (ver_3_3) {
major = 3;
minor = 3;
}
else if (ver_3_2) {
major = 3;
minor = 2;
}
else if (ver_3_1) {
major = 3;
minor = 1;
}
else if (ver_3_0) {
major = 3;
minor = 0;
}
else 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;
}
ctx->VersionMajor = major;
ctx->VersionMinor = minor;
ctx->VersionString = (char *) malloc(max);
if (ctx->VersionString) {
_mesa_snprintf(ctx->VersionString, max,
"%u.%u Mesa " MESA_VERSION_STRING
#ifdef MESA_GIT_SHA1
" (" MESA_GIT_SHA1 ")"
#endif
,
ctx->VersionMajor, ctx->VersionMinor);
}
}
static void
compute_version_es1(struct gl_context *ctx)
{
static const int max = 100;
/* OpenGL ES 1.0 is derived from OpenGL 1.3 */
const GLboolean ver_1_0 = (ctx->Extensions.ARB_multitexture &&
ctx->Extensions.EXT_texture_env_add &&
ctx->Extensions.ARB_texture_env_combine &&
ctx->Extensions.ARB_texture_env_dot3);
/* OpenGL ES 1.1 is derived from OpenGL 1.5 */
const GLboolean ver_1_1 = (ver_1_0 &&
ctx->Extensions.EXT_point_parameters);
if (ver_1_1) {
ctx->VersionMajor = 1;
ctx->VersionMinor = 1;
} else if (ver_1_0) {
ctx->VersionMajor = 1;
ctx->VersionMinor = 0;
} else {
_mesa_problem(ctx, "Incomplete OpenGL ES 1.0 support.");
}
ctx->VersionString = (char *) malloc(max);
if (ctx->VersionString) {
_mesa_snprintf(ctx->VersionString, max,
"OpenGL ES-CM 1.%d Mesa " MESA_VERSION_STRING,
ctx->VersionMinor);
}
}
static void
compute_version_es2(struct gl_context *ctx)
{
static const int max = 100;
/* OpenGL ES 2.0 is derived from OpenGL 2.0 */
const GLboolean ver_2_0 = (ctx->Extensions.ARB_multitexture &&
ctx->Extensions.ARB_texture_cube_map &&
ctx->Extensions.ARB_texture_mirrored_repeat &&
ctx->Extensions.EXT_blend_color &&
ctx->Extensions.EXT_blend_func_separate &&
ctx->Extensions.EXT_blend_minmax &&
ctx->Extensions.EXT_blend_subtract &&
ctx->Extensions.EXT_stencil_wrap &&
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);
if (ver_2_0) {
ctx->VersionMajor = 2;
ctx->VersionMinor = 0;
} else {
_mesa_problem(ctx, "Incomplete OpenGL ES 2.0 support.");
}
ctx->VersionString = (char *) malloc(max);
if (ctx->VersionString) {
_mesa_snprintf(ctx->VersionString, max,
"OpenGL ES 2.0 Mesa " MESA_VERSION_STRING);
}
}
/**
* Set the context's VersionMajor, VersionMinor, VersionString fields.
* This should only be called once as part of context initialization
* or to perform version check for GLX_ARB_create_context_profile.
*/
void
_mesa_compute_version(struct gl_context *ctx)
{
if (ctx->VersionMajor)
return;
switch (ctx->API) {
case API_OPENGL:
compute_version(ctx);
break;
case API_OPENGLES:
compute_version_es1(ctx);
break;
case API_OPENGLES2:
compute_version_es2(ctx);
break;
}
}
|
