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/*

 * (C) Copyright IBM Corporation 2002, 2004

 * 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

 * on the rights to use, copy, modify, merge, publish, distribute, sub

 * license, 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 (including the next

 * paragraph) 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 NON-INFRINGEMENT.  IN NO EVENT SHALL

 * THE COPYRIGHT HOLDERS AND/OR THEIR SUPPLIERS 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.

 */

/**

 * \file glxextensions.h

 *

 * \author Ian Romanick 

 */

#ifndef GLX_GLXEXTENSIONS_H

#define GLX_GLXEXTENSIONS_H

enum

{

   ARB_create_context_bit = 0,

   ARB_create_context_profile_bit,

   ARB_create_context_robustness_bit,

   ARB_fbconfig_float_bit,

   ARB_get_proc_address_bit,

   ARB_multisample_bit,

   ATI_pixel_format_float_bit,

   EXT_visual_info_bit,

   EXT_visual_rating_bit,

   EXT_import_context_bit,

   EXT_framebuffer_sRGB_bit,

   EXT_fbconfig_packed_float_bit,

   EXT_create_context_es2_profile_bit,

   MESA_copy_sub_buffer_bit,

   MESA_depth_float_bit,

   MESA_multithread_makecurrent_bit,

   MESA_swap_control_bit,

   MESA_swap_frame_usage_bit,

   NV_float_buffer_bit,

   OML_swap_method_bit,

   OML_sync_control_bit,

   SGI_make_current_read_bit,

   SGI_swap_control_bit,

   SGI_video_sync_bit,

   SGIS_multisample_bit,

   SGIX_fbconfig_bit,

   SGIX_pbuffer_bit,

   SGIX_swap_barrier_bit,

   SGIX_swap_group_bit,

   SGIX_visual_select_group_bit,

   EXT_texture_from_pixmap_bit,

   INTEL_swap_event_bit,

};

/* From the GLX perspective, the ARB and EXT extensions are identical.  Use a

 * single bit for both.

 */

#define ARB_framebuffer_sRGB_bit EXT_framebuffer_sRGB_bit

enum

{

   GL_ARB_depth_texture_bit = 0,

   GL_ARB_draw_buffers_bit,

   GL_ARB_fragment_program_bit,

   GL_ARB_fragment_program_shadow_bit,

   GL_ARB_framebuffer_object_bit,

   GL_ARB_imaging_bit,

   GL_ARB_multisample_bit,

   GL_ARB_multitexture_bit,

   GL_ARB_occlusion_query_bit,

   GL_ARB_point_parameters_bit,

   GL_ARB_point_sprite_bit,

   GL_ARB_shadow_bit,

   GL_ARB_shadow_ambient_bit,

   GL_ARB_texture_border_clamp_bit,

   GL_ARB_texture_cube_map_bit,

   GL_ARB_texture_compression_bit,

   GL_ARB_texture_env_add_bit,

   GL_ARB_texture_env_combine_bit,

   GL_ARB_texture_env_crossbar_bit,

   GL_ARB_texture_env_dot3_bit,

   GL_ARB_texture_mirrored_repeat_bit,

   GL_ARB_texture_non_power_of_two_bit,

   GL_ARB_texture_rectangle_bit,

   GL_ARB_texture_rg_bit,

   GL_ARB_transpose_matrix_bit,

   GL_ARB_vertex_buffer_object_bit,

   GL_ARB_vertex_program_bit,

   GL_ARB_window_pos_bit,

   GL_EXT_abgr_bit,

   GL_EXT_bgra_bit,

   GL_EXT_blend_color_bit,

   GL_EXT_blend_equation_separate_bit,

   GL_EXT_blend_func_separate_bit,

   GL_EXT_blend_logic_op_bit,

   GL_EXT_blend_minmax_bit,

   GL_EXT_blend_subtract_bit,

   GL_EXT_clip_volume_hint_bit,

   GL_EXT_compiled_vertex_array_bit,

   GL_EXT_convolution_bit,

   GL_EXT_copy_texture_bit,

   GL_EXT_cull_vertex_bit,

   GL_EXT_depth_bounds_test_bit,

   GL_EXT_draw_range_elements_bit,

   GL_EXT_fog_coord_bit,

   GL_EXT_framebuffer_blit_bit,

   GL_EXT_framebuffer_multisample_bit,

   GL_EXT_framebuffer_object_bit,

   GL_EXT_framebuffer_sRGB_bit,

   GL_EXT_multi_draw_arrays_bit,

   GL_EXT_packed_depth_stencil_bit,

   GL_EXT_packed_pixels_bit,

   GL_EXT_paletted_texture_bit,

   GL_EXT_pixel_buffer_object_bit,

   GL_EXT_polygon_offset_bit,

   GL_EXT_rescale_normal_bit,

   GL_EXT_secondary_color_bit,

   GL_EXT_separate_specular_color_bit,

   GL_EXT_shadow_funcs_bit,

   GL_EXT_shared_texture_palette_bit,

   GL_EXT_stencil_two_side_bit,

   GL_EXT_stencil_wrap_bit,

   GL_EXT_subtexture_bit,

   GL_EXT_texture_bit,

   GL_EXT_texture3D_bit,

   GL_EXT_texture_compression_dxt1_bit,

   GL_EXT_texture_compression_s3tc_bit,

   GL_EXT_texture_edge_clamp_bit,

   GL_EXT_texture_env_combine_bit,

   GL_EXT_texture_env_dot3_bit,

   GL_EXT_texture_filter_anisotropic_bit,

   GL_EXT_texture_lod_bit,

   GL_EXT_texture_lod_bias_bit,

   GL_EXT_texture_mirror_clamp_bit,

   GL_EXT_texture_object_bit,

   GL_EXT_vertex_array_bit,

   GL_3DFX_texture_compression_FXT1_bit,

   GL_APPLE_packed_pixels_bit,

   GL_APPLE_ycbcr_422_bit,

   GL_ATI_text_fragment_shader_bit,

   GL_ATI_texture_env_combine3_bit,

   GL_ATI_texture_float_bit,

   GL_ATI_texture_mirror_once_bit,

   GL_HP_convolution_border_modes_bit,

   GL_HP_occlusion_test_bit,

   GL_IBM_cull_vertex_bit,

   GL_IBM_pixel_filter_hint_bit,

   GL_IBM_rasterpos_clip_bit,

   GL_IBM_texture_clamp_nodraw_bit,

   GL_INGR_interlace_read_bit,

   GL_MESA_pack_invert_bit,

   GL_MESA_ycbcr_texture_bit,

   GL_NV_blend_square_bit,

   GL_NV_copy_depth_to_color_bit,

   GL_NV_depth_clamp_bit,

   GL_NV_fog_distance_bit,

   GL_NV_fragment_program_bit,

   GL_NV_fragment_program_option_bit,

   GL_NV_fragment_program2_bit,

   GL_NV_light_max_exponent_bit,

   GL_NV_multisample_filter_hint_bit,

   GL_NV_packed_depth_stencil_bit,

   GL_NV_point_sprite_bit,

   GL_NV_texgen_reflection_bit,

   GL_NV_texture_compression_vtc_bit,

   GL_NV_texture_env_combine4_bit,

   GL_NV_vertex_program_bit,

   GL_NV_vertex_program1_1_bit,

   GL_NV_vertex_program2_bit,

   GL_NV_vertex_program2_option_bit,

   GL_NV_vertex_program3_bit,

   GL_OES_compressed_paletted_texture_bit,

   GL_OES_read_format_bit,

   GL_SGI_color_matrix_bit,

   GL_SGI_color_table_bit,

   GL_SGI_texture_color_table_bit,

   GL_SGIS_generate_mipmap_bit,

   GL_SGIS_multisample_bit,

   GL_SGIS_texture_lod_bit,

   GL_SGIX_blend_alpha_minmax_bit,

   GL_SGIX_clipmap_bit,

   GL_SGIX_depth_texture_bit,

   GL_SGIX_fog_offset_bit,

   GL_SGIX_shadow_bit,

   GL_SGIX_texture_coordinate_clamp_bit,

   GL_SGIX_texture_lod_bias_bit,

   GL_SGIX_texture_range_bit,

   GL_SGIX_texture_scale_bias_bit,

   GL_SGIX_vertex_preclip_bit,

   GL_SGIX_vertex_preclip_hint_bit,

   GL_SGIX_ycrcb_bit,

   GL_SUN_convolution_border_modes_bit,

   GL_SUN_slice_accum_bit,

   /* This *MUST* go here.  If it gets put after the duplicate values it will

    * get the value after the last duplicate.

    */

   __NUM_GL_EXTS,

   /* Alias extension bits.  These extensions exist in either vendor-specific

    * or EXT form and were later promoted to either EXT or ARB form.  In all

    * cases, the meaning is *exactly* the same.  That's why

    * EXT_texture_env_combine is *NOT* an alias of ARB_texture_env_combine and

    * EXT_texture_env_dot3 is *NOT* an alias of ARB_texture_env_dot3.  Be

    * careful!  When in doubt, src/mesa/main/extensions.c in the Mesa tree

    * is a great reference.

    */

   GL_ATI_blend_equation_separate_bit = GL_EXT_blend_equation_separate_bit,

   GL_ATI_draw_buffers_bit = GL_ARB_draw_buffers_bit,

   GL_ATIX_texture_env_combine3_bit = GL_ATI_texture_env_combine3_bit,

   GL_EXT_point_parameters_bit = GL_ARB_point_parameters_bit,

   GL_EXT_texture_env_add_bit = GL_ARB_texture_env_add_bit,

   GL_EXT_texture_rectangle_bit = GL_ARB_texture_rectangle_bit,

   GL_IBM_texture_mirrored_repeat_bit = GL_ARB_texture_mirrored_repeat_bit,

   GL_INGR_blend_func_separate_bit = GL_EXT_blend_func_separate_bit,

   GL_MESA_window_pos_bit = GL_ARB_window_pos_bit,

   GL_NV_texture_rectangle_bit = GL_ARB_texture_rectangle_bit,

   GL_SGIS_texture_border_clamp_bit = GL_ARB_texture_border_clamp_bit,

   GL_SGIS_texture_edge_clamp_bit = GL_EXT_texture_edge_clamp_bit,

   GL_SGIX_shadow_ambient_bit = GL_ARB_shadow_ambient_bit,

   GL_SUN_multi_draw_arrays_bit = GL_EXT_multi_draw_arrays_bit

};

#define __GL_EXT_BYTES   ((__NUM_GL_EXTS + 7) / 8)

struct glx_screen;

struct glx_context;

extern GLboolean __glXExtensionBitIsEnabled(struct glx_screen *psc,

                                            unsigned bit);

extern const char *__glXGetClientExtensions(void);

extern void __glXCalculateUsableExtensions(struct glx_screen *psc,

                                           GLboolean

                                           display_is_direct_capable,

                                           int server_minor_version);

extern void __glXCalculateUsableGLExtensions(struct glx_context *gc,

                                             const char *server_string,

                                             int major_version,

                                             int minor_version);

extern void __glXGetGLVersion(int *major_version, int *minor_version);

extern char *__glXGetClientGLExtensionString(void);

extern GLboolean __glExtensionBitIsEnabled(struct glx_context *gc,

                                           unsigned bit);

extern void

__glXEnableDirectExtension(struct glx_screen *psc, const char *name);

/* Source-level backwards compatibility with old drivers. They won't

 * find the respective functions, though.

 */

typedef void (*PFNGLXENABLEEXTENSIONPROC) (const char *name,

                                           GLboolean force_client);

typedef void (*PFNGLXDISABLEEXTENSIONPROC) (const char *name);

/* GLX_ALIAS should be used for functions with a non-void return type.

   GLX_ALIAS_VOID is for functions with a void return type. */

#ifdef GLX_NO_STATIC_EXTENSION_FUNCTIONS

# define GLX_ALIAS(return_type, real_func, proto_args, args, aliased_func)

# define GLX_ALIAS_VOID(real_func, proto_args, args, aliased_func)

#else

# if defined(__GNUC__) && !defined(GLX_ALIAS_UNSUPPORTED)

#  define GLX_ALIAS(return_type, real_func, proto_args, args, aliased_func) \

   return_type  real_func  proto_args                                   \

   __attribute__ ((alias( # aliased_func ) ));

#  define GLX_ALIAS_VOID(real_func, proto_args, args, aliased_func) \

   GLX_ALIAS(void, real_func, proto_args, args, aliased_func)

# else

#  define GLX_ALIAS(return_type, real_func, proto_args, args, aliased_func) \

   return_type  real_func  proto_args                                   \

   { return aliased_func args ; }

#  define GLX_ALIAS_VOID(real_func, proto_args, args, aliased_func) \

   void  real_func  proto_args                                      \

   { aliased_func args ; }

# endif /* __GNUC__ */

#endif /* GLX_NO_STATIC_EXTENSION_FUNCTIONS */

#endif /* GLX_GLXEXTENSIONS_H */