2 * Mesa 3-D graphics library
4 * Copyright (C) 2010 VMware, Inc. All Rights Reserved.
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7 * copy of this software and associated documentation files (the "Software"),
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17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
33 * Examine enabled GL extensions to determine GL version.
34 * Return major and minor version numbers.
37 compute_version(struct gl_context *ctx)
40 static const int max = 100;
42 const GLboolean ver_1_3 = (ctx->Extensions.ARB_multisample &&
43 ctx->Extensions.ARB_multitexture &&
44 ctx->Extensions.ARB_texture_border_clamp &&
45 ctx->Extensions.ARB_texture_compression &&
46 ctx->Extensions.ARB_texture_cube_map &&
47 ctx->Extensions.EXT_texture_env_add &&
48 ctx->Extensions.ARB_texture_env_combine &&
49 ctx->Extensions.ARB_texture_env_dot3);
50 const GLboolean ver_1_4 = (ver_1_3 &&
51 ctx->Extensions.ARB_depth_texture &&
52 ctx->Extensions.ARB_shadow &&
53 ctx->Extensions.ARB_texture_env_crossbar &&
54 ctx->Extensions.ARB_texture_mirrored_repeat &&
55 ctx->Extensions.ARB_window_pos &&
56 ctx->Extensions.EXT_blend_color &&
57 ctx->Extensions.EXT_blend_func_separate &&
58 ctx->Extensions.EXT_blend_minmax &&
59 ctx->Extensions.EXT_blend_subtract &&
60 ctx->Extensions.EXT_fog_coord &&
61 ctx->Extensions.EXT_multi_draw_arrays &&
62 ctx->Extensions.EXT_point_parameters &&
63 ctx->Extensions.EXT_secondary_color &&
64 ctx->Extensions.EXT_stencil_wrap &&
65 ctx->Extensions.EXT_texture_lod_bias &&
66 ctx->Extensions.SGIS_generate_mipmap);
67 const GLboolean ver_1_5 = (ver_1_4 &&
68 ctx->Extensions.ARB_occlusion_query &&
69 ctx->Extensions.ARB_vertex_buffer_object &&
70 ctx->Extensions.EXT_shadow_funcs);
71 const GLboolean ver_2_0 = (ver_1_5 &&
72 ctx->Extensions.ARB_draw_buffers &&
73 ctx->Extensions.ARB_point_sprite &&
74 ctx->Extensions.ARB_shader_objects &&
75 ctx->Extensions.ARB_vertex_shader &&
76 ctx->Extensions.ARB_fragment_shader &&
77 ctx->Extensions.ARB_texture_non_power_of_two &&
78 ctx->Extensions.EXT_blend_equation_separate &&
80 /* Technically, 2.0 requires the functionality
81 * of the EXT version. Enable 2.0 if either
82 * extension is available, and assume that a
83 * driver that only exposes the ATI extension
84 * will fallback to software when necessary.
86 (ctx->Extensions.EXT_stencil_two_side
87 || ctx->Extensions.ATI_separate_stencil));
88 const GLboolean ver_2_1 = (ver_2_0 &&
89 ctx->Const.GLSLVersion >= 120 &&
90 ctx->Extensions.EXT_pixel_buffer_object &&
91 ctx->Extensions.EXT_texture_sRGB);
92 const GLboolean ver_3_0 = (ver_2_1 &&
93 ctx->Extensions.ARB_color_buffer_float &&
94 ctx->Extensions.ARB_depth_buffer_float &&
95 ctx->Extensions.ARB_half_float_pixel &&
96 ctx->Extensions.ARB_map_buffer_range &&
97 ctx->Extensions.ARB_texture_float &&
98 ctx->Extensions.ARB_texture_rg &&
99 ctx->Extensions.ARB_texture_compression_rgtc &&
100 ctx->Extensions.APPLE_vertex_array_object &&
101 ctx->Extensions.EXT_draw_buffers2 &&
102 ctx->Extensions.EXT_framebuffer_blit &&
103 ctx->Extensions.EXT_framebuffer_multisample &&
104 ctx->Extensions.EXT_framebuffer_object &&
105 ctx->Extensions.EXT_framebuffer_sRGB &&
106 ctx->Extensions.EXT_packed_depth_stencil &&
107 ctx->Extensions.EXT_packed_float &&
108 ctx->Extensions.EXT_texture_array &&
109 ctx->Extensions.EXT_texture_integer &&
110 ctx->Extensions.EXT_texture_shared_exponent &&
111 ctx->Extensions.EXT_transform_feedback &&
112 ctx->Extensions.NV_conditional_render);
113 const GLboolean ver_3_1 = (ver_3_0 &&
114 ctx->Extensions.ARB_copy_buffer &&
115 ctx->Extensions.ARB_draw_instanced &&
116 ctx->Extensions.ARB_texture_buffer_object &&
117 ctx->Extensions.ARB_uniform_buffer_object &&
118 ctx->Extensions.EXT_texture_snorm &&
119 ctx->Extensions.NV_primitive_restart &&
120 ctx->Extensions.NV_texture_rectangle &&
121 ctx->Const.MaxVertexTextureImageUnits >= 16);
122 const GLboolean ver_3_2 = (ver_3_1 &&
123 ctx->Extensions.ARB_depth_clamp &&
124 ctx->Extensions.ARB_draw_elements_base_vertex &&
125 ctx->Extensions.ARB_fragment_coord_conventions &&
126 ctx->Extensions.ARB_geometry_shader4 &&
127 ctx->Extensions.EXT_provoking_vertex &&
128 ctx->Extensions.ARB_seamless_cube_map &&
129 ctx->Extensions.ARB_sync &&
130 ctx->Extensions.ARB_texture_multisample &&
131 ctx->Extensions.EXT_vertex_array_bgra);
132 const GLboolean ver_3_3 = (ver_3_2 &&
133 ctx->Extensions.ARB_blend_func_extended &&
134 ctx->Extensions.ARB_explicit_attrib_location &&
135 ctx->Extensions.ARB_instanced_arrays &&
136 ctx->Extensions.ARB_occlusion_query2 &&
137 ctx->Extensions.ARB_sampler_objects &&
138 ctx->Extensions.ARB_texture_rgb10_a2ui &&
139 ctx->Extensions.ARB_timer_query &&
140 ctx->Extensions.ARB_vertex_type_2_10_10_10_rev &&
141 ctx->Extensions.EXT_texture_swizzle);
184 ctx->VersionMajor = major;
185 ctx->VersionMinor = minor;
186 ctx->VersionString = (char *) malloc(max);
187 if (ctx->VersionString) {
188 _mesa_snprintf(ctx->VersionString, max,
189 "%u.%u Mesa " MESA_VERSION_STRING
191 " (" MESA_GIT_SHA1 ")"
194 ctx->VersionMajor, ctx->VersionMinor);
199 compute_version_es1(struct gl_context *ctx)
201 static const int max = 100;
203 /* OpenGL ES 1.0 is derived from OpenGL 1.3 */
204 const GLboolean ver_1_0 = (ctx->Extensions.ARB_multisample &&
205 ctx->Extensions.ARB_multitexture &&
206 ctx->Extensions.ARB_texture_compression &&
207 ctx->Extensions.EXT_texture_env_add &&
208 ctx->Extensions.ARB_texture_env_combine &&
209 ctx->Extensions.ARB_texture_env_dot3);
210 /* OpenGL ES 1.1 is derived from OpenGL 1.5 */
211 const GLboolean ver_1_1 = (ver_1_0 &&
212 ctx->Extensions.EXT_point_parameters &&
213 ctx->Extensions.SGIS_generate_mipmap &&
214 ctx->Extensions.ARB_vertex_buffer_object);
217 ctx->VersionMajor = 1;
218 ctx->VersionMinor = 1;
219 } else if (ver_1_0) {
220 ctx->VersionMajor = 1;
221 ctx->VersionMinor = 0;
223 _mesa_problem(ctx, "Incomplete OpenGL ES 1.0 support.");
226 ctx->VersionString = (char *) malloc(max);
227 if (ctx->VersionString) {
228 _mesa_snprintf(ctx->VersionString, max,
229 "OpenGL ES-CM 1.%d Mesa " MESA_VERSION_STRING,
235 compute_version_es2(struct gl_context *ctx)
237 static const int max = 100;
239 /* OpenGL ES 2.0 is derived from OpenGL 2.0 */
240 const GLboolean ver_2_0 = (ctx->Extensions.ARB_multisample &&
241 ctx->Extensions.ARB_multitexture &&
242 ctx->Extensions.ARB_texture_compression &&
243 ctx->Extensions.ARB_texture_cube_map &&
244 ctx->Extensions.ARB_texture_mirrored_repeat &&
245 ctx->Extensions.EXT_blend_color &&
246 ctx->Extensions.EXT_blend_func_separate &&
247 ctx->Extensions.EXT_blend_minmax &&
248 ctx->Extensions.EXT_blend_subtract &&
249 ctx->Extensions.EXT_stencil_wrap &&
250 ctx->Extensions.ARB_vertex_buffer_object &&
251 ctx->Extensions.ARB_shader_objects &&
252 ctx->Extensions.ARB_vertex_shader &&
253 ctx->Extensions.ARB_fragment_shader &&
254 ctx->Extensions.ARB_texture_non_power_of_two &&
255 ctx->Extensions.EXT_blend_equation_separate);
257 ctx->VersionMajor = 2;
258 ctx->VersionMinor = 0;
260 _mesa_problem(ctx, "Incomplete OpenGL ES 2.0 support.");
263 ctx->VersionString = (char *) malloc(max);
264 if (ctx->VersionString) {
265 _mesa_snprintf(ctx->VersionString, max,
266 "OpenGL ES 2.0 Mesa " MESA_VERSION_STRING);
271 * Set the context's VersionMajor, VersionMinor, VersionString fields.
272 * This should only be called once as part of context initialization
273 * or to perform version check for GLX_ARB_create_context_profile.
276 _mesa_compute_version(struct gl_context *ctx)
278 if (ctx->VersionMajor)
283 compute_version(ctx);
286 compute_version_es1(ctx);
289 compute_version_es2(ctx);