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| Rev | Author | Line No. | Line |
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| 1901 | serge | 1 | /* |
| 2 | * Mesa 3-D graphics library |
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| 3 | * |
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| 4 | * Copyright (C) 2010 VMware, Inc. All Rights Reserved. |
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| 5 | * |
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| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 7 | * copy of this software and associated documentation files (the "Software"), |
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| 8 | * to deal in the Software without restriction, including without limitation |
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| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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| 10 | * and/or sell copies of the Software, and to permit persons to whom the |
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| 11 | * Software is furnished to do so, subject to the following conditions: |
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| 12 | * |
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| 13 | * The above copyright notice and this permission notice shall be included |
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| 14 | * in all copies or substantial portions of the Software. |
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| 15 | * |
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| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 17 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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| 19 | * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
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| 20 | * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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| 21 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 22 | */ |
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| 23 | |||
| 24 | |||
| 25 | #include "context.h" |
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| 26 | #include "version.h" |
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| 27 | |||
| 28 | |||
| 29 | |||
| 30 | /** |
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| 31 | * Examine enabled GL extensions to determine GL version. |
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| 32 | * Return major and minor version numbers. |
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| 33 | */ |
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| 34 | static void |
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| 35 | compute_version(struct gl_context *ctx) |
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| 36 | { |
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| 37 | GLuint major, minor; |
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| 38 | static const int max = 100; |
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| 39 | |||
| 40 | const GLboolean ver_1_3 = (ctx->Extensions.ARB_multisample && |
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| 41 | ctx->Extensions.ARB_multitexture && |
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| 42 | ctx->Extensions.ARB_texture_border_clamp && |
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| 43 | ctx->Extensions.ARB_texture_compression && |
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| 44 | ctx->Extensions.ARB_texture_cube_map && |
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| 45 | ctx->Extensions.EXT_texture_env_add && |
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| 46 | ctx->Extensions.ARB_texture_env_combine && |
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| 47 | ctx->Extensions.ARB_texture_env_dot3); |
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| 48 | const GLboolean ver_1_4 = (ver_1_3 && |
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| 49 | ctx->Extensions.ARB_depth_texture && |
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| 50 | ctx->Extensions.ARB_shadow && |
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| 51 | ctx->Extensions.ARB_texture_env_crossbar && |
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| 52 | ctx->Extensions.ARB_texture_mirrored_repeat && |
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| 53 | ctx->Extensions.ARB_window_pos && |
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| 54 | ctx->Extensions.EXT_blend_color && |
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| 55 | ctx->Extensions.EXT_blend_func_separate && |
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| 56 | ctx->Extensions.EXT_blend_minmax && |
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| 57 | ctx->Extensions.EXT_blend_subtract && |
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| 58 | ctx->Extensions.EXT_fog_coord && |
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| 59 | ctx->Extensions.EXT_multi_draw_arrays && |
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| 60 | ctx->Extensions.EXT_point_parameters && |
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| 61 | ctx->Extensions.EXT_secondary_color && |
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| 62 | ctx->Extensions.EXT_stencil_wrap && |
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| 63 | ctx->Extensions.EXT_texture_lod_bias && |
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| 64 | ctx->Extensions.SGIS_generate_mipmap); |
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| 65 | const GLboolean ver_1_5 = (ver_1_4 && |
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| 66 | ctx->Extensions.ARB_occlusion_query && |
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| 67 | ctx->Extensions.ARB_vertex_buffer_object && |
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| 68 | ctx->Extensions.EXT_shadow_funcs); |
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| 69 | const GLboolean ver_2_0 = (ver_1_5 && |
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| 70 | ctx->Extensions.ARB_draw_buffers && |
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| 71 | ctx->Extensions.ARB_point_sprite && |
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| 72 | ctx->Extensions.ARB_shader_objects && |
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| 73 | ctx->Extensions.ARB_vertex_shader && |
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| 74 | ctx->Extensions.ARB_fragment_shader && |
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| 75 | ctx->Extensions.ARB_texture_non_power_of_two && |
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| 76 | ctx->Extensions.EXT_blend_equation_separate && |
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| 77 | |||
| 78 | /* Technically, 2.0 requires the functionality |
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| 79 | * of the EXT version. Enable 2.0 if either |
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| 80 | * extension is available, and assume that a |
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| 81 | * driver that only exposes the ATI extension |
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| 82 | * will fallback to software when necessary. |
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| 83 | */ |
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| 84 | (ctx->Extensions.EXT_stencil_two_side |
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| 85 | || ctx->Extensions.ATI_separate_stencil)); |
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| 86 | const GLboolean ver_2_1 = (ver_2_0 && |
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| 87 | ctx->Const.GLSLVersion >= 120 && |
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| 88 | ctx->Extensions.EXT_pixel_buffer_object && |
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| 89 | ctx->Extensions.EXT_texture_sRGB); |
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| 90 | const GLboolean ver_3_0 = (ver_2_1 && |
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| 91 | ctx->Extensions.ARB_half_float_pixel && |
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| 92 | ctx->Extensions.ARB_map_buffer_range && |
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| 93 | ctx->Extensions.ARB_texture_float && |
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| 94 | ctx->Extensions.ARB_texture_rg && |
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| 95 | ctx->Extensions.ARB_texture_compression_rgtc && |
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| 96 | ctx->Extensions.APPLE_vertex_array_object && |
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| 97 | ctx->Extensions.EXT_draw_buffers2 && |
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| 98 | ctx->Extensions.EXT_framebuffer_blit && |
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| 99 | ctx->Extensions.EXT_framebuffer_multisample && |
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| 100 | ctx->Extensions.EXT_framebuffer_object && |
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| 101 | ctx->Extensions.EXT_framebuffer_sRGB && |
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| 102 | ctx->Extensions.EXT_packed_depth_stencil && |
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| 103 | ctx->Extensions.EXT_packed_float && |
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| 104 | ctx->Extensions.EXT_texture_array && |
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| 105 | ctx->Extensions.EXT_texture_integer && |
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| 106 | ctx->Extensions.EXT_texture_shared_exponent && |
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| 107 | ctx->Extensions.EXT_transform_feedback && |
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| 108 | ctx->Extensions.NV_conditional_render); |
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| 109 | const GLboolean ver_3_1 = (ver_3_0 && |
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| 110 | ctx->Extensions.ARB_copy_buffer && |
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| 111 | ctx->Extensions.ARB_draw_instanced && |
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| 112 | ctx->Extensions.ARB_texture_buffer_object && |
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| 113 | ctx->Extensions.ARB_uniform_buffer_object && |
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| 114 | ctx->Extensions.NV_primitive_restart && |
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| 115 | ctx->Extensions.NV_texture_rectangle && |
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| 116 | ctx->Const.MaxVertexTextureImageUnits >= 16); |
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| 117 | const GLboolean ver_3_2 = (ver_3_1 && |
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| 118 | ctx->Extensions.ARB_depth_clamp && |
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| 119 | ctx->Extensions.ARB_draw_elements_base_vertex && |
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| 120 | ctx->Extensions.ARB_fragment_coord_conventions && |
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| 121 | ctx->Extensions.ARB_geometry_shader4 && |
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| 122 | ctx->Extensions.EXT_provoking_vertex && |
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| 123 | ctx->Extensions.ARB_seamless_cube_map && |
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| 124 | ctx->Extensions.ARB_sync && |
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| 125 | ctx->Extensions.ARB_texture_multisample && |
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| 126 | ctx->Extensions.EXT_vertex_array_bgra); |
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| 127 | const GLboolean ver_3_3 = (ver_3_2 && |
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| 128 | ctx->Extensions.ARB_blend_func_extended && |
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| 129 | ctx->Extensions.ARB_explicit_attrib_location && |
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| 130 | ctx->Extensions.ARB_instanced_arrays && |
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| 131 | ctx->Extensions.ARB_occlusion_query2 && |
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| 132 | ctx->Extensions.ARB_sampler_objects && |
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| 133 | ctx->Extensions.ARB_texture_rgb10_a2ui && |
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| 134 | ctx->Extensions.ARB_timer_query && |
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| 135 | ctx->Extensions.ARB_vertex_type_2_10_10_10_rev && |
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| 136 | ctx->Extensions.EXT_texture_swizzle); |
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| 137 | |||
| 138 | if (ver_3_3) { |
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| 139 | major = 3; |
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| 140 | minor = 3; |
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| 141 | } |
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| 142 | else if (ver_3_2) { |
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| 143 | major = 3; |
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| 144 | minor = 2; |
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| 145 | } |
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| 146 | else if (ver_3_1) { |
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| 147 | major = 3; |
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| 148 | minor = 1; |
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| 149 | } |
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| 150 | else if (ver_3_0) { |
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| 151 | major = 3; |
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| 152 | minor = 0; |
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| 153 | } |
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| 154 | else if (ver_2_1) { |
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| 155 | major = 2; |
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| 156 | minor = 1; |
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| 157 | } |
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| 158 | else if (ver_2_0) { |
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| 159 | major = 2; |
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| 160 | minor = 0; |
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| 161 | } |
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| 162 | else if (ver_1_5) { |
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| 163 | major = 1; |
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| 164 | minor = 5; |
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| 165 | } |
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| 166 | else if (ver_1_4) { |
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| 167 | major = 1; |
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| 168 | minor = 4; |
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| 169 | } |
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| 170 | else if (ver_1_3) { |
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| 171 | major = 1; |
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| 172 | minor = 3; |
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| 173 | } |
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| 174 | else { |
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| 175 | major = 1; |
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| 176 | minor = 2; |
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| 177 | } |
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| 178 | |||
| 179 | ctx->VersionMajor = major; |
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| 180 | ctx->VersionMinor = minor; |
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| 181 | ctx->VersionString = (char *) malloc(max); |
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| 182 | if (ctx->VersionString) { |
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| 183 | _mesa_snprintf(ctx->VersionString, max, |
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| 184 | "%u.%u Mesa " MESA_VERSION_STRING, |
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| 185 | ctx->VersionMajor, ctx->VersionMinor); |
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| 186 | } |
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| 187 | } |
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| 188 | |||
| 189 | static void |
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| 190 | compute_version_es1(struct gl_context *ctx) |
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| 191 | { |
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| 192 | static const int max = 100; |
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| 193 | |||
| 194 | /* OpenGL ES 1.0 is derived from OpenGL 1.3 */ |
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| 195 | const GLboolean ver_1_0 = (ctx->Extensions.ARB_multisample && |
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| 196 | ctx->Extensions.ARB_multitexture && |
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| 197 | ctx->Extensions.ARB_texture_compression && |
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| 198 | ctx->Extensions.EXT_texture_env_add && |
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| 199 | ctx->Extensions.ARB_texture_env_combine && |
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| 200 | ctx->Extensions.ARB_texture_env_dot3); |
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| 201 | /* OpenGL ES 1.1 is derived from OpenGL 1.5 */ |
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| 202 | const GLboolean ver_1_1 = (ver_1_0 && |
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| 203 | ctx->Extensions.EXT_point_parameters && |
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| 204 | ctx->Extensions.SGIS_generate_mipmap && |
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| 205 | ctx->Extensions.ARB_vertex_buffer_object); |
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| 206 | |||
| 207 | if (ver_1_1) { |
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| 208 | ctx->VersionMajor = 1; |
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| 209 | ctx->VersionMinor = 1; |
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| 210 | } else if (ver_1_0) { |
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| 211 | ctx->VersionMajor = 1; |
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| 212 | ctx->VersionMinor = 0; |
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| 213 | } else { |
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| 214 | _mesa_problem(ctx, "Incomplete OpenGL ES 1.0 support."); |
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| 215 | } |
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| 216 | |||
| 217 | ctx->VersionString = (char *) malloc(max); |
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| 218 | if (ctx->VersionString) { |
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| 219 | _mesa_snprintf(ctx->VersionString, max, |
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| 220 | "OpenGL ES-CM 1.%d Mesa " MESA_VERSION_STRING, |
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| 221 | ctx->VersionMinor); |
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| 222 | } |
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| 223 | } |
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| 224 | |||
| 225 | static void |
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| 226 | compute_version_es2(struct gl_context *ctx) |
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| 227 | { |
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| 228 | static const int max = 100; |
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| 229 | |||
| 230 | /* OpenGL ES 2.0 is derived from OpenGL 2.0 */ |
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| 231 | const GLboolean ver_2_0 = (ctx->Extensions.ARB_multisample && |
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| 232 | ctx->Extensions.ARB_multitexture && |
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| 233 | ctx->Extensions.ARB_texture_compression && |
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| 234 | ctx->Extensions.ARB_texture_cube_map && |
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| 235 | ctx->Extensions.ARB_texture_mirrored_repeat && |
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| 236 | ctx->Extensions.EXT_blend_color && |
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| 237 | ctx->Extensions.EXT_blend_func_separate && |
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| 238 | ctx->Extensions.EXT_blend_minmax && |
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| 239 | ctx->Extensions.EXT_blend_subtract && |
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| 240 | ctx->Extensions.EXT_stencil_wrap && |
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| 241 | ctx->Extensions.ARB_vertex_buffer_object && |
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| 242 | ctx->Extensions.ARB_shader_objects && |
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| 243 | ctx->Extensions.ARB_vertex_shader && |
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| 244 | ctx->Extensions.ARB_fragment_shader && |
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| 245 | ctx->Extensions.ARB_texture_non_power_of_two && |
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| 246 | ctx->Extensions.EXT_blend_equation_separate); |
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| 247 | if (ver_2_0) { |
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| 248 | ctx->VersionMajor = 2; |
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| 249 | ctx->VersionMinor = 0; |
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| 250 | } else { |
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| 251 | _mesa_problem(ctx, "Incomplete OpenGL ES 2.0 support."); |
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| 252 | } |
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| 253 | |||
| 254 | ctx->VersionString = (char *) malloc(max); |
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| 255 | if (ctx->VersionString) { |
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| 256 | _mesa_snprintf(ctx->VersionString, max, |
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| 257 | "OpenGL ES 2.0 Mesa " MESA_VERSION_STRING); |
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| 258 | } |
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| 259 | } |
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| 260 | |||
| 261 | /** |
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| 262 | * Set the context's VersionMajor, VersionMinor, VersionString fields. |
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| 263 | * This should only be called once as part of context initialization |
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| 264 | * or to perform version check for GLX_ARB_create_context_profile. |
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| 265 | */ |
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| 266 | void |
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| 267 | _mesa_compute_version(struct gl_context *ctx) |
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| 268 | { |
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| 269 | if (ctx->VersionMajor) |
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| 270 | return; |
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| 271 | |||
| 272 | switch (ctx->API) { |
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| 273 | case API_OPENGL: |
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| 274 | compute_version(ctx); |
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| 275 | break; |
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| 276 | case API_OPENGLES: |
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| 277 | compute_version_es1(ctx); |
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| 278 | break; |
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| 279 | case API_OPENGLES2: |
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| 280 | compute_version_es2(ctx); |
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| 281 | break; |
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| 282 | } |
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| 283 | |||
| 284 | } |