src/mesa/drivers/dri/intel/intel_extensions.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "main/mfeatures.h"
  29
  30 #include "intel_chipset.h"
  31 #include "intel_context.h"
  32 #include "intel_extensions.h"
  33 #include "utils.h"
  34
  35
  36 #define need_GL_ARB_ES2_compatibility
  37 #define need_GL_ARB_draw_elements_base_vertex
  38 #define need_GL_ARB_framebuffer_object
  39 #define need_GL_ARB_map_buffer_range
  40 #define need_GL_ARB_occlusion_query
  41 #define need_GL_ARB_point_parameters
  42 #define need_GL_ARB_shader_objects
  43 #define need_GL_ARB_sync
  44 #define need_GL_ARB_vertex_array_object
  45 #define need_GL_ARB_vertex_program
  46 #define need_GL_ARB_vertex_shader
  47 #define need_GL_ARB_window_pos
  48 #define need_GL_EXT_blend_color
  49 #define need_GL_EXT_blend_equation_separate
  50 #define need_GL_EXT_blend_func_separate
  51 #define need_GL_EXT_blend_minmax
  52 #define need_GL_EXT_draw_buffers2
  53 #define need_GL_EXT_fog_coord
  54 #define need_GL_EXT_framebuffer_blit
  55 #define need_GL_EXT_framebuffer_multisample
  56 #define need_GL_EXT_framebuffer_object
  57 #define need_GL_EXT_gpu_program_parameters
  58 #define need_GL_EXT_point_parameters
  59 #define need_GL_EXT_provoking_vertex
  60 #define need_GL_EXT_secondary_color
  61 #define need_GL_EXT_separate_shader_objects
  62 #define need_GL_EXT_stencil_two_side
  63 #define need_GL_EXT_timer_query
  64 #define need_GL_APPLE_vertex_array_object
  65 #define need_GL_APPLE_object_purgeable
  66 #define need_GL_ATI_separate_stencil
  67 #define need_GL_ATI_envmap_bumpmap
  68 #define need_GL_NV_point_sprite
  69 #define need_GL_NV_vertex_program
  70 #define need_GL_OES_EGL_image
  71 #define need_GL_VERSION_2_0
  72 #define need_GL_VERSION_2_1
  73
  74 #include "main/remap_helper.h"
  75
  76
  77 /**
  78  * Extension strings exported by the intel driver.
  79  *
  80  * Extensions supported by all chips supported by i830_dri, i915_dri, or
  81  * i965_dri.
  82  */
  83 static const struct dri_extension card_extensions[] = {
  84    { "GL_ARB_ES2_compatibility",          GL_ARB_ES2_compatibility_functions },
  85    { "GL_ARB_draw_elements_base_vertex",  GL_ARB_draw_elements_base_vertex_functions },
  86    { "GL_ARB_explicit_attrib_location",   NULL },
  87    { "GL_ARB_framebuffer_object",         GL_ARB_framebuffer_object_functions},
  88    { "GL_ARB_half_float_pixel",           NULL },
  89    { "GL_ARB_map_buffer_range",           GL_ARB_map_buffer_range_functions },
  90    { "GL_ARB_multitexture",               NULL },
  91    { "GL_ARB_pixel_buffer_object",      NULL },
  92    { "GL_ARB_point_parameters",           GL_ARB_point_parameters_functions },
  93    { "GL_ARB_point_sprite",               NULL },
  94    { "GL_ARB_shader_objects",             GL_ARB_shader_objects_functions },
  95    { "GL_ARB_shading_language_100",       GL_VERSION_2_0_functions },
  96    { "GL_ARB_sync",                       GL_ARB_sync_functions },
  97    { "GL_ARB_texture_border_clamp",       NULL },
  98    { "GL_ARB_texture_cube_map",           NULL },
  99    { "GL_ARB_texture_env_add",            NULL },
 100    { "GL_ARB_texture_env_combine",        NULL },
 101    { "GL_ARB_texture_env_crossbar",       NULL },
 102    { "GL_ARB_texture_env_dot3",           NULL },
 103    { "GL_ARB_texture_mirrored_repeat",    NULL },
 104    { "GL_ARB_texture_rectangle",          NULL },
 105    { "GL_ARB_vertex_array_object",        GL_ARB_vertex_array_object_functions},
 106    { "GL_ARB_vertex_program",             GL_ARB_vertex_program_functions },
 107    { "GL_ARB_vertex_shader",              GL_ARB_vertex_shader_functions },
 108    { "GL_ARB_window_pos",                 GL_ARB_window_pos_functions },
 109    { "GL_EXT_blend_color",                GL_EXT_blend_color_functions },
 110    { "GL_EXT_blend_equation_separate",    GL_EXT_blend_equation_separate_functions },
 111    { "GL_EXT_blend_func_separate",        GL_EXT_blend_func_separate_functions },
 112    { "GL_EXT_blend_minmax",               GL_EXT_blend_minmax_functions },
 113    { "GL_EXT_blend_logic_op",             NULL },
 114    { "GL_EXT_blend_subtract",             NULL },
 115    { "GL_EXT_framebuffer_blit",         GL_EXT_framebuffer_blit_functions },
 116    { "GL_EXT_framebuffer_object",       GL_EXT_framebuffer_object_functions },
 117    { "GL_EXT_framebuffer_multisample",    GL_EXT_framebuffer_multisample_functions },
 118    { "GL_EXT_fog_coord",                  GL_EXT_fog_coord_functions },
 119    { "GL_EXT_gpu_program_parameters",     GL_EXT_gpu_program_parameters_functions },
 120    { "GL_EXT_packed_depth_stencil",       NULL },
 121    { "GL_EXT_provoking_vertex",           GL_EXT_provoking_vertex_functions },
 122    { "GL_EXT_secondary_color",            GL_EXT_secondary_color_functions },
 123    { "GL_EXT_separate_shader_objects",    GL_EXT_separate_shader_objects_functions },
 124    { "GL_EXT_stencil_wrap",               NULL },
 125    { "GL_EXT_texture_edge_clamp",         NULL },
 126    { "GL_EXT_texture_env_combine",        NULL },
 127    { "GL_EXT_texture_env_dot3",           NULL },
 128    { "GL_EXT_texture_filter_anisotropic", NULL },
 129    { "GL_EXT_texture_lod_bias",           NULL },
 130    { "GL_3DFX_texture_compression_FXT1",  NULL },
 131    { "GL_APPLE_client_storage",           NULL },
 132    { "GL_APPLE_object_purgeable",         GL_APPLE_object_purgeable_functions },
 133    { "GL_APPLE_vertex_array_object",      GL_APPLE_vertex_array_object_functions},
 134    { "GL_MESA_pack_invert",               NULL },
 135    { "GL_MESA_ycbcr_texture",             NULL },
 136    { "GL_NV_blend_square",                NULL },
 137    { "GL_NV_vertex_program",              GL_NV_vertex_program_functions },
 138    { "GL_NV_vertex_program1_1",           NULL },
 139 #if FEATURE_OES_EGL_image
 140    { "GL_OES_EGL_image",                  GL_OES_EGL_image_functions },
 141 #endif
 142    { NULL, NULL }
 143 };
 144
 145
 146 /** i915 / i945-only extensions */
 147 static const struct dri_extension i915_extensions[] = {
 148    { "GL_ARB_depth_texture",              NULL },
 149    { "GL_ARB_fragment_program",           NULL },
 150    { "GL_ARB_shadow",                     NULL },
 151    { "GL_ARB_texture_non_power_of_two",   NULL },
 152    { "GL_ATI_separate_stencil",           GL_ATI_separate_stencil_functions },
 153    { "GL_ATI_texture_env_combine3",       NULL },
 154    { "GL_EXT_shadow_funcs",               NULL },
 155    { "GL_EXT_stencil_two_side",           GL_EXT_stencil_two_side_functions },
 156    { "GL_NV_texture_env_combine4",        NULL },
 157    { NULL,                                NULL }
 158 };
 159
 160
 161 /** i965-only extensions */
 162 static const struct dri_extension brw_extensions[] = {
 163    { "GL_ARB_depth_clamp",                NULL },
 164    { "GL_ARB_depth_texture",              NULL },
 165    { "GL_ARB_fragment_coord_conventions", NULL },
 166    { "GL_ARB_fragment_program",           NULL },
 167    { "GL_ARB_fragment_program_shadow",    NULL },
 168    { "GL_ARB_fragment_shader",            NULL },
 169    { "GL_ARB_half_float_vertex",          NULL },
 170    { "GL_ARB_occlusion_query",            GL_ARB_occlusion_query_functions },
 171    { "GL_ARB_point_sprite",               NULL },
 172    { "GL_ARB_seamless_cube_map",          NULL },
 173    { "GL_ARB_shadow",                     NULL },
 174 #ifdef TEXTURE_FLOAT_ENABLED
 175    { "GL_ARB_texture_float",              NULL },
 176 #endif
 177    { "GL_MESA_texture_signed_rgba",       NULL },
 178    { "GL_ARB_texture_non_power_of_two",   NULL },
 179    { "GL_ARB_texture_rg",                 NULL },
 180    { "GL_EXT_draw_buffers2",              GL_EXT_draw_buffers2_functions },
 181    { "GL_EXT_framebuffer_sRGB",           NULL },
 182    { "GL_EXT_shadow_funcs",               NULL },
 183    { "GL_EXT_stencil_two_side",           GL_EXT_stencil_two_side_functions },
 184    { "GL_EXT_texture_sRGB",               NULL },
 185    { "GL_EXT_texture_sRGB_decode",        NULL },
 186    { "GL_EXT_texture_swizzle",            NULL },
 187    { "GL_EXT_vertex_array_bgra",          NULL },
 188    { "GL_ATI_envmap_bumpmap",             GL_ATI_envmap_bumpmap_functions },
 189    { "GL_ATI_separate_stencil",           GL_ATI_separate_stencil_functions },
 190    { "GL_ATI_texture_env_combine3",       NULL },
 191    { "GL_NV_texture_env_combine4",        NULL },
 192    { NULL,                                NULL }
 193 };
 194
 195 static const struct dri_extension ironlake_extensions[] = {
 196    { "GL_EXT_timer_query",                GL_EXT_timer_query_functions },
 197 };
 198
 199 static const struct dri_extension arb_oq_extensions[] = {
 200    { "GL_ARB_occlusion_query",            GL_ARB_occlusion_query_functions },
 201    { NULL, NULL }
 202 };
 203
 204
 205 static const struct dri_extension fragment_shader_extensions[] = {
 206    { "GL_ARB_fragment_shader",            NULL },
 207    { NULL, NULL }
 208 };
 209
 210 /**
 211  * \brief Get GLSL version from the environment.
 212  *
 213  * If the environment variable INTEL_GLSL_VERSION is set, convert its value
 214  * to an integer and return it. Otherwise, return the default version, 120.
 215  */
 216 static GLuint
 217 get_glsl_version()
 218 {
 219     const char * s = getenv("INTEL_GLSL_VERSION");
 220     if (s == NULL)
 221         return 120;
 222     else
 223         return (GLuint) atoi(s);
 224 }
 225
 226 /**
 227  * Initializes potential list of extensions if ctx == NULL, or actually enables
 228  * extensions for a context.
 229  */
 230 void
 231 intelInitExtensions(struct gl_context *ctx)
 232 {
 233    struct intel_context *intel = intel_context(ctx);
 234
 235    driInitExtensions(ctx, card_extensions, GL_FALSE);
 236
 237    _mesa_map_function_array(GL_VERSION_2_1_functions);
 238
 239    ctx->Const.GLSLVersion = get_glsl_version();
 240
 241    if (intel->gen >= 5)
 242       driInitExtensions(ctx, ironlake_extensions, GL_FALSE);
 243
 244    if (intel->gen >= 4)
 245       driInitExtensions(ctx, brw_extensions, GL_FALSE);
 246
 247    if (intel->gen == 3) {
 248       driInitExtensions(ctx, i915_extensions, GL_FALSE);
 249
 250       if (driQueryOptionb(&intel->optionCache, "fragment_shader"))
 251          driInitExtensions(ctx, fragment_shader_extensions, GL_FALSE);
 252
 253       if (driQueryOptionb(&intel->optionCache, "stub_occlusion_query"))
 254          driInitExtensions(ctx, arb_oq_extensions, GL_FALSE);
 255    }
 256 }