diff options
Diffstat (limited to 'nx-X11/extras/Mesa/src/glx/x11/glxextensions.c')
| -rw-r--r-- | nx-X11/extras/Mesa/src/glx/x11/glxextensions.c | 717 |
1 files changed, 0 insertions, 717 deletions
diff --git a/nx-X11/extras/Mesa/src/glx/x11/glxextensions.c b/nx-X11/extras/Mesa/src/glx/x11/glxextensions.c deleted file mode 100644 index d2597981c..000000000 --- a/nx-X11/extras/Mesa/src/glx/x11/glxextensions.c +++ /dev/null @@ -1,717 +0,0 @@ -/* - * (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.c - * - * \author Ian Romanick <idr@us.ibm.com> - */ - -#include "glxclient.h" -#include <X11/extensions/extutil.h> -#include <X11/extensions/Xext.h> -#include <string.h> -#include "glapi.h" -#include "glxextensions.h" -#include "simple_list.h" - -#define SET_BIT(m,b) (m[ (b) / 8 ] |= (1U << ((b) % 8))) -#define CLR_BIT(m,b) (m[ (b) / 8 ] &= ~(1U << ((b) % 8))) -#define IS_SET(m,b) ((m[ (b) / 8 ] & (1U << ((b) % 8))) != 0) -#define CONCAT(a,b) a ## b -#define GLX(n) "GLX_" # n, 4 + sizeof( # n ) - 1, CONCAT(n,_bit) -#define GL(n) "GL_" # n, 3 + sizeof( # n ) - 1, GL_ ## n ## _bit -#define VER(a,b) a, b -#define Y 1 -#define N 0 -#define EXT_ENABLED(bit,supported) (IS_SET( supported, bit )) - - -struct extension_info { - const char * const name; - unsigned name_len; - - unsigned char bit; - - /* This is the lowest version of GLX that "requires" this extension. - * For example, GLX 1.3 requires SGIX_fbconfig, SGIX_pbuffer, and - * SGI_make_current_read. If the extension is not required by any known - * version of GLX, use 0, 0. - */ - unsigned char version_major; - unsigned char version_minor; - unsigned char client_support; - unsigned char direct_support; - unsigned char client_only; /** Is the extension client-side only? */ - unsigned char direct_only; /** Is the extension for direct - * contexts only? - */ -}; - -static const struct extension_info known_glx_extensions[] = { - { GLX(ARB_get_proc_address), VER(1,4), Y, N, Y, N }, - { GLX(ARB_multisample), VER(1,4), Y, Y, N, N }, - { GLX(ARB_render_texture), VER(0,0), N, N, N, N }, - { GLX(ATI_pixel_format_float), VER(0,0), N, N, N, N }, - { GLX(EXT_import_context), VER(0,0), Y, Y, N, N }, - { GLX(EXT_visual_info), VER(0,0), Y, Y, N, N }, - { GLX(EXT_visual_rating), VER(0,0), Y, Y, N, N }, - { GLX(MESA_agp_offset), VER(0,0), N, N, N, Y }, /* Deprecated */ - { GLX(MESA_allocate_memory), VER(0,0), Y, N, N, Y }, - { GLX(MESA_copy_sub_buffer), VER(0,0), N, N, N, N }, /* Deprecated? */ - { GLX(MESA_pixmap_colormap), VER(0,0), N, N, N, N }, /* Deprecated */ - { GLX(MESA_release_buffers), VER(0,0), N, N, N, N }, /* Deprecated */ - { GLX(MESA_set_3dfx_mode), VER(0,0), N, N, N, N }, /* Deprecated */ - { GLX(MESA_swap_control), VER(0,0), Y, N, N, Y }, - { GLX(MESA_swap_frame_usage), VER(0,0), Y, N, N, Y }, - { GLX(NV_float_buffer), VER(0,0), N, N, N, N }, - { GLX(NV_render_depth_texture), VER(0,0), N, N, N, N }, - { GLX(NV_render_texture_rectangle), VER(0,0), N, N, N, N }, - { GLX(NV_vertex_array_range), VER(0,0), N, N, N, Y }, /* Deprecated */ - { GLX(OML_swap_method), VER(0,0), Y, Y, N, N }, - { GLX(OML_sync_control), VER(0,0), Y, N, N, Y }, - { GLX(SGI_cushion), VER(0,0), N, N, N, N }, - { GLX(SGI_make_current_read), VER(1,3), Y, N, N, N }, - { GLX(SGI_swap_control), VER(0,0), Y, N, N, N }, - { GLX(SGI_video_sync), VER(0,0), Y, N, N, Y }, - { GLX(SGIS_blended_overlay), VER(0,0), N, N, N, N }, - { GLX(SGIS_color_range), VER(0,0), N, N, N, N }, - { GLX(SGIS_multisample), VER(0,0), Y, Y, N, N }, - { GLX(SGIX_dm_buffer), VER(0,0), N, N, N, N }, - { GLX(SGIX_fbconfig), VER(1,3), Y, Y, N, N }, - { GLX(SGIX_pbuffer), VER(1,3), Y, N, N, N }, - { GLX(SGIX_swap_barrier), VER(0,0), N, N, N, N }, - { GLX(SGIX_swap_group), VER(0,0), N, N, N, N }, - { GLX(SGIX_video_resize), VER(0,0), N, N, N, N }, - { GLX(SGIX_video_source), VER(0,0), N, N, N, N }, - { GLX(SGIX_visual_select_group), VER(0,0), Y, Y, N, N }, - { GLX(SUN_get_transparent_index), VER(0,0), N, N, N, N }, - { NULL } -}; - -static const struct extension_info known_gl_extensions[] = { - { GL(ARB_depth_texture), VER(1,4), Y, N, N, N }, - { GL(ARB_draw_buffers), VER(0,0), Y, N, N, N }, - { GL(ARB_fragment_program), VER(0,0), Y, N, N, N }, - { GL(ARB_fragment_program_shadow), VER(0,0), Y, N, N, N }, - { GL(ARB_imaging), VER(0,0), Y, N, N, N }, - { GL(ARB_multisample), VER(1,3), Y, N, N, N }, - { GL(ARB_multitexture), VER(1,3), Y, N, N, N }, - { GL(ARB_occlusion_query), VER(1,5), Y, N, N, N }, - { GL(ARB_point_parameters), VER(1,4), Y, N, N, N }, - { GL(ARB_point_sprite), VER(0,0), Y, N, N, N }, - { GL(ARB_shadow), VER(1,4), Y, N, N, N }, - { GL(ARB_shadow_ambient), VER(0,0), Y, N, N, N }, - { GL(ARB_texture_border_clamp), VER(1,3), Y, N, N, N }, - { GL(ARB_texture_compression), VER(1,3), Y, N, N, N }, - { GL(ARB_texture_cube_map), VER(1,3), Y, N, N, N }, - { GL(ARB_texture_env_add), VER(1,3), Y, N, N, N }, - { GL(ARB_texture_env_combine), VER(1,3), Y, N, N, N }, - { GL(ARB_texture_env_crossbar), VER(1,4), Y, N, N, N }, - { GL(ARB_texture_env_dot3), VER(1,3), Y, N, N, N }, - { GL(ARB_texture_mirrored_repeat), VER(1,4), Y, N, N, N }, - { GL(ARB_texture_non_power_of_two), VER(1,5), Y, N, N, N }, - { GL(ARB_texture_rectangle), VER(0,0), Y, N, N, N }, - { GL(ARB_transpose_matrix), VER(1,3), Y, N, Y, N }, - { GL(ARB_vertex_buffer_object), VER(1,5), N, N, N, N }, - { GL(ARB_vertex_program), VER(0,0), Y, N, N, N }, - { GL(ARB_window_pos), VER(1,4), Y, N, N, N }, - { GL(EXT_abgr), VER(0,0), Y, N, N, N }, - { GL(EXT_bgra), VER(1,2), Y, N, N, N }, - { GL(EXT_blend_color), VER(1,4), Y, N, N, N }, - { GL(EXT_blend_equation_separate), VER(0,0), N, N, N, N }, - { GL(EXT_blend_func_separate), VER(1,4), Y, N, N, N }, - { GL(EXT_blend_logic_op), VER(1,4), Y, N, N, N }, - { GL(EXT_blend_minmax), VER(1,4), Y, N, N, N }, - { GL(EXT_blend_subtract), VER(1,4), Y, N, N, N }, - { GL(EXT_clip_volume_hint), VER(0,0), Y, N, N, N }, - { GL(EXT_compiled_vertex_array), VER(0,0), N, N, N, N }, - { GL(EXT_convolution), VER(0,0), N, N, N, N }, - { GL(EXT_copy_texture), VER(1,1), Y, N, N, N }, - { GL(EXT_cull_vertex), VER(0,0), N, N, N, N }, - { GL(EXT_depth_bounds_test), VER(0,0), N, N, N, N }, - { GL(EXT_draw_range_elements), VER(1,2), Y, N, Y, N }, - { GL(EXT_fog_coord), VER(1,4), Y, N, N, N }, - { GL(EXT_multi_draw_arrays), VER(1,4), Y, N, Y, N }, - { GL(EXT_packed_pixels), VER(1,2), Y, N, N, N }, - { GL(EXT_paletted_texture), VER(0,0), Y, N, N, N }, - { GL(EXT_pixel_buffer_object), VER(0,0), N, N, N, N }, - { GL(EXT_point_parameters), VER(1,4), Y, N, N, N }, - { GL(EXT_polygon_offset), VER(1,1), Y, N, N, N }, - { GL(EXT_rescale_normal), VER(1,2), Y, N, N, N }, - { GL(EXT_secondary_color), VER(1,4), Y, N, N, N }, - { GL(EXT_separate_specular_color), VER(1,2), Y, N, N, N }, - { GL(EXT_shadow_funcs), VER(1,5), Y, N, N, N }, - { GL(EXT_shared_texture_palette), VER(0,0), Y, N, N, N }, - { GL(EXT_stencil_two_side), VER(0,0), Y, N, N, N }, - { GL(EXT_stencil_wrap), VER(1,4), Y, N, N, N }, - { GL(EXT_subtexture), VER(1,1), Y, N, N, N }, - { GL(EXT_texture), VER(1,1), Y, N, N, N }, - { GL(EXT_texture3D), VER(1,2), Y, N, N, N }, - { GL(EXT_texture_compression_dxt1), VER(0,0), Y, N, N, N }, - { GL(EXT_texture_compression_s3tc), VER(0,0), Y, N, N, N }, - { GL(EXT_texture_edge_clamp), VER(1,2), Y, N, N, N }, - { GL(EXT_texture_env_add), VER(1,3), Y, N, N, N }, - { GL(EXT_texture_env_combine), VER(1,3), Y, N, N, N }, - { GL(EXT_texture_env_dot3), VER(0,0), Y, N, N, N }, - { GL(EXT_texture_filter_anisotropic), VER(0,0), Y, N, N, N }, - { GL(EXT_texture_lod), VER(1,2), Y, N, N, N }, - { GL(EXT_texture_lod_bias), VER(1,4), Y, N, N, N }, - { GL(EXT_texture_mirror_clamp), VER(0,0), Y, N, N, N }, - { GL(EXT_texture_object), VER(1,1), Y, N, N, N }, - { GL(EXT_texture_rectangle), VER(0,0), Y, N, N, N }, - { GL(EXT_vertex_array), VER(0,0), Y, N, N, N }, - { GL(3DFX_texture_compression_FXT1), VER(0,0), Y, N, N, N }, - { GL(APPLE_packed_pixels), VER(1,2), Y, N, N, N }, - { GL(APPLE_ycbcr_422), VER(0,0), Y, N, N, N }, - { GL(ATI_draw_buffers), VER(0,0), Y, N, N, N }, - { GL(ATI_text_fragment_shader), VER(0,0), Y, N, N, N }, - { GL(ATI_texture_env_combine3), VER(0,0), Y, N, N, N }, - { GL(ATI_texture_float), VER(0,0), Y, N, N, N }, - { GL(ATI_texture_mirror_once), VER(0,0), Y, N, N, N }, - { GL(ATIX_texture_env_combine3), VER(0,0), Y, N, N, N }, - { GL(HP_convolution_border_modes), VER(0,0), Y, N, N, N }, - { GL(HP_occlusion_test), VER(0,0), Y, N, N, N }, - { GL(IBM_cull_vertex), VER(0,0), Y, N, N, N }, - { GL(IBM_pixel_filter_hint), VER(0,0), Y, N, N, N }, - { GL(IBM_rasterpos_clip), VER(0,0), Y, N, N, N }, - { GL(IBM_texture_clamp_nodraw), VER(0,0), Y, N, N, N }, - { GL(IBM_texture_mirrored_repeat), VER(0,0), Y, N, N, N }, - { GL(INGR_blend_func_separate), VER(0,0), Y, N, N, N }, - { GL(INGR_interlace_read), VER(0,0), Y, N, N, N }, - { GL(MESA_pack_invert), VER(0,0), Y, N, N, N }, - { GL(MESA_ycbcr_texture), VER(0,0), Y, N, N, N }, - { GL(NV_blend_square), VER(1,4), Y, N, N, N }, - { GL(NV_copy_depth_to_color), VER(0,0), Y, N, N, N }, - { GL(NV_depth_clamp), VER(0,0), Y, N, N, N }, - { GL(NV_fog_distance), VER(0,0), Y, N, N, N }, - { GL(NV_fragment_program), VER(0,0), Y, N, N, N }, - { GL(NV_fragment_program_option), VER(0,0), Y, N, N, N }, - { GL(NV_fragment_program2), VER(0,0), Y, N, N, N }, - { GL(NV_light_max_exponent), VER(0,0), Y, N, N, N }, - { GL(NV_multisample_filter_hint), VER(0,0), Y, N, N, N }, - { GL(NV_point_sprite), VER(0,0), Y, N, N, N }, - { GL(NV_texgen_reflection), VER(0,0), Y, N, N, N }, - { GL(NV_texture_compression_vtc), VER(0,0), Y, N, N, N }, - { GL(NV_texture_env_combine4), VER(0,0), Y, N, N, N }, - { GL(NV_texture_rectangle), VER(0,0), Y, N, N, N }, - { GL(NV_vertex_program), VER(0,0), Y, N, N, N }, - { GL(NV_vertex_program1_1), VER(0,0), Y, N, N, N }, - { GL(NV_vertex_program2), VER(0,0), Y, N, N, N }, - { GL(NV_vertex_program2_option), VER(0,0), Y, N, N, N }, - { GL(NV_vertex_program3), VER(0,0), Y, N, N, N }, - { GL(OES_read_format), VER(0,0), Y, N, N, N }, - { GL(OES_compressed_paletted_texture),VER(0,0), Y, N, N, N }, - { GL(SGI_color_matrix), VER(0,0), Y, N, N, N }, - { GL(SGI_texture_color_table), VER(0,0), Y, N, N, N }, - { GL(SGIS_generate_mipmap), VER(1,4), Y, N, N, N }, - { GL(SGIS_multisample), VER(0,0), Y, N, N, N }, - { GL(SGIS_texture_border_clamp), VER(1,3), Y, N, N, N }, - { GL(SGIS_texture_edge_clamp), VER(1,2), Y, N, N, N }, - { GL(SGIS_texture_lod), VER(1,2), Y, N, N, N }, - { GL(SGIX_blend_alpha_minmax), VER(0,0), Y, N, N, N }, - { GL(SGIX_clipmap), VER(0,0), Y, N, N, N }, - { GL(SGIX_depth_texture), VER(0,0), Y, N, N, N }, - { GL(SGIX_fog_offset), VER(0,0), Y, N, N, N }, - { GL(SGIX_shadow), VER(0,0), Y, N, N, N }, - { GL(SGIX_shadow_ambient), VER(0,0), Y, N, N, N }, - { GL(SGIX_texture_coordinate_clamp), VER(0,0), Y, N, N, N }, - { GL(SGIX_texture_lod_bias), VER(0,0), Y, N, N, N }, - { GL(SGIX_texture_range), VER(0,0), Y, N, N, N }, - { GL(SGIX_texture_scale_bias), VER(0,0), Y, N, N, N }, - { GL(SGIX_vertex_preclip), VER(0,0), Y, N, N, N }, - { GL(SGIX_vertex_preclip_hint), VER(0,0), Y, N, N, N }, - { GL(SGIX_ycrcb), VER(0,0), Y, N, N, N }, - { GL(SUN_convolution_border_modes), VER(0,0), Y, N, N, N }, - { GL(SUN_multi_draw_arrays), VER(0,0), Y, N, Y, N }, - { GL(SUN_slice_accum), VER(0,0), Y, N, N, N }, - { NULL } -}; - - -/* global bit-fields of available extensions and their characteristics */ -static unsigned char client_glx_support[8]; -static unsigned char client_glx_only[8]; -static unsigned char direct_glx_only[8]; -static unsigned char client_gl_support[ __GL_EXT_BYTES ]; -static unsigned char client_gl_only[ __GL_EXT_BYTES ]; - -/** - * Bits representing the set of extensions that are enabled by default in all - * direct rendering drivers. - */ -static unsigned char direct_glx_support[8]; - -/** - * Highest core GL version that can be supported for indirect rendering. - */ -static const unsigned gl_major = 1; -static const unsigned gl_minor = 4; - -/* client extensions string */ -static const char * __glXGLXClientExtensions = NULL; - -static void __glXExtensionsCtr( void ); -static void __glXExtensionsCtrScreen( __GLXscreenConfigs *psc ); -static void __glXProcessServerString( const struct extension_info * ext, - const char * server_string, unsigned char * server_support ); - -/** - * Set the state of a GLX extension. - * - * \param name Name of the extension. - * \param name_len Length, in characters, of the extension name. - * \param state New state (either enabled or disabled) of the extension. - * \param supported Table in which the state of the extension is to be set. - */ -static void -set_glx_extension( const struct extension_info * ext, - const char * name, unsigned name_len, GLboolean state, - unsigned char * supported ) -{ - unsigned i; - - - for ( i = 0 ; ext[i].name != NULL ; i++ ) { - if ( (name_len == ext[i].name_len) - && (strncmp( ext[i].name, name, name_len ) == 0) ) { - if ( state ) { - SET_BIT( supported, ext[i].bit ); - } - else { - CLR_BIT( supported, ext[i].bit ); - } - - return; - } - } -} - - -#define NUL '\0' -#define SEPARATOR ' ' - -/** - * Convert the server's extension string to a bit-field. - * - * \param server_string GLX extension string from the server. - * \param server_support Bit-field of supported extensions. - */ -static void -__glXProcessServerString( const struct extension_info * ext, - const char * server_string, - unsigned char * server_support ) -{ - unsigned base; - unsigned len; - - (void) memset( server_support, 0, sizeof( server_support ) ); - - for ( base = 0 ; server_string[ base ] != NUL ; /* empty */ ) { - /* Determine the length of the next extension name. - */ - for ( len = 0 - ; (server_string[ base + len ] != SEPARATOR) - && (server_string[ base + len ] != NUL) - ; len++ ) { - /* empty */ - } - - /* Set the bit for the extension in the server_support table. - */ - set_glx_extension( ext, & server_string[ base ], len, GL_TRUE, - server_support ); - - - /* Advance to the next extension string. This means that we skip - * over the previous string and any trialing white-space. - */ - for ( base += len ; - (server_string[ base ] == SEPARATOR) - && (server_string[ base ] != NUL) - ; base++ ) { - /* empty */ - } - } -} - - -/** - * Enable a named GLX extension on a given screen. - * Drivers should not call this function directly. They should instead use - * \c glXGetProcAddress to obtain a pointer to the function. - * - * \param psc Pointer to GLX per-screen record. - * \param name Name of the extension to enable. - * - * \sa glXGetProcAddress - * - * \since Internal API version 20030813. - */ -void -__glXScrEnableExtension( __GLXscreenConfigs *psc, const char * name ) -{ - __glXExtensionsCtr(); - __glXExtensionsCtrScreen(psc); - set_glx_extension( known_glx_extensions, name, strlen( name ), GL_TRUE, - psc->direct_support ); -} - - -/** - * Initialize global extension support tables. - */ - -static void -__glXExtensionsCtr( void ) -{ - unsigned i; - static GLboolean ext_list_first_time = GL_TRUE; - - - if ( ext_list_first_time ) { - ext_list_first_time = GL_FALSE; - - (void) memset( client_glx_support, 0, sizeof( client_glx_support ) ); - (void) memset( direct_glx_support, 0, sizeof( direct_glx_support ) ); - (void) memset( client_glx_only, 0, sizeof( client_glx_only ) ); - (void) memset( direct_glx_only, 0, sizeof( direct_glx_only ) ); - - (void) memset( client_gl_support, 0, sizeof( client_gl_support ) ); - (void) memset( client_gl_only, 0, sizeof( client_gl_only ) ); - - for ( i = 0 ; known_glx_extensions[i].name != NULL ; i++ ) { - const unsigned bit = known_glx_extensions[i].bit; - - if ( known_glx_extensions[i].client_support ) { - SET_BIT( client_glx_support, bit ); - } - - if ( known_glx_extensions[i].direct_support ) { - SET_BIT( direct_glx_support, bit ); - } - - if ( known_glx_extensions[i].client_only ) { - SET_BIT( client_glx_only, bit ); - } - - if ( known_glx_extensions[i].direct_only ) { - SET_BIT( direct_glx_only, bit ); - } - } - - for ( i = 0 ; known_gl_extensions[i].name != NULL ; i++ ) { - const unsigned bit = known_gl_extensions[i].bit; - - if ( known_gl_extensions[i].client_support ) { - SET_BIT( client_gl_support, bit ); - } - - if ( known_gl_extensions[i].client_only ) { - SET_BIT( client_gl_only, bit ); - } - } - -#if 0 - fprintf( stderr, "[%s:%u] Maximum client library version: %u.%u\n", - __func__, __LINE__, gl_major, gl_minor ); -#endif - } -} - - -/** - * Make sure that per-screen direct-support table is initialized. - * - * \param psc Pointer to GLX per-screen record. - */ - -static void -__glXExtensionsCtrScreen( __GLXscreenConfigs *psc ) -{ - if (psc->ext_list_first_time) { - psc->ext_list_first_time = GL_FALSE; - (void) memcpy( psc->direct_support, direct_glx_support, - sizeof( direct_glx_support ) ); - } -} - - -/** - * Check if a certain extension is enabled on a given screen. - * - * \param psc Pointer to GLX per-screen record. - * \param bit Bit index in the direct-support table. - * \returns If the extension bit is enabled for the screen, \c GL_TRUE is - * returned. If the extension bit is not enabled or if \c psc is - * \c NULL, then \c GL_FALSE is returned. - */ -GLboolean -__glXExtensionBitIsEnabled( __GLXscreenConfigs *psc, unsigned bit ) -{ - GLboolean enabled = GL_FALSE; - - if ( psc != NULL ) { - __glXExtensionsCtr(); - __glXExtensionsCtrScreen( psc ); - enabled = EXT_ENABLED( bit, psc->direct_support ); - } - - return enabled; -} - - -/** - * Check if a certain extension is enabled in a given context. - * - */ -GLboolean -__glExtensionBitIsEnabled( const __GLXcontext * gc, unsigned bit ) -{ - GLboolean enabled = GL_FALSE; - - if ( gc != NULL ) { - enabled = EXT_ENABLED( bit, gc->gl_extension_bits ); - } - - return enabled; -} - - - -/** - * Convert a bit-field to a string of supported extensions. - */ -static char * -__glXGetStringFromTable( const struct extension_info * ext, - const unsigned char * supported ) -{ - unsigned i; - unsigned ext_str_len; - char * ext_str; - char * point; - - - ext_str_len = 0; - for ( i = 0 ; ext[i].name != NULL ; i++ ) { - if ( EXT_ENABLED( ext[i].bit, supported ) ) { - ext_str_len += ext[i].name_len + 1; - } - } - - ext_str = Xmalloc( ext_str_len + 1 ); - if ( ext_str != NULL ) { - point = ext_str; - - for ( i = 0 ; ext[i].name != NULL ; i++ ) { - if ( EXT_ENABLED( ext[i].bit, supported ) ) { - (void) memcpy( point, ext[i].name, ext[i].name_len ); - point += ext[i].name_len; - - *point = ' '; - point++; - } - } - - *point = '\0'; - } - - return ext_str; -} - - -/** - * Get the string of client library supported extensions. - */ -const char * -__glXGetClientExtensions( void ) -{ - if ( __glXGLXClientExtensions == NULL ) { - __glXExtensionsCtr(); - __glXGLXClientExtensions = __glXGetStringFromTable( known_glx_extensions, - client_glx_support ); - } - - return __glXGLXClientExtensions; -} - - -/** - * Calculate the list of application usable extensions. The resulting - * string is stored in \c psc->effectiveGLXexts. - * - * \param psc Pointer to GLX per-screen record. - * \param display_is_direct_capable True if the display is capable of - * direct rendering. - * \param minor_version GLX minor version from the server. - */ - -void -__glXCalculateUsableExtensions( __GLXscreenConfigs *psc, - GLboolean display_is_direct_capable, - int minor_version ) -{ - unsigned char server_support[8]; - unsigned char usable[8]; - unsigned i; - - __glXExtensionsCtr(); - __glXExtensionsCtrScreen( psc ); - __glXProcessServerString( known_glx_extensions, - psc->serverGLXexts, server_support ); - - - /* This is a hack. Some servers support GLX 1.3 but don't export - * all of the extensions implied by GLX 1.3. If the server claims - * support for GLX 1.3, enable support for the extensions that can be - * "emulated" as well. - */ - - if ( minor_version >= 3 ) { - SET_BIT( server_support, EXT_visual_info_bit ); - SET_BIT( server_support, EXT_visual_rating_bit ); - SET_BIT( server_support, SGI_make_current_read_bit ); - SET_BIT( server_support, SGIX_fbconfig_bit ); - SET_BIT( server_support, SGIX_pbuffer_bit ); - - /* This one is a little iffy. GLX 1.3 doesn't incorporate all of this - * extension. However, the only part that is not strictly client-side - * is shared. That's the glXQueryContext / glXQueryContextInfoEXT - * function. - */ - - SET_BIT( server_support, EXT_import_context_bit ); - } - - - /* An extension is supported if the client-side (i.e., libGL) supports - * it and the "server" supports it. In this case that means that either - * the true server supports it or it is only for direct-rendering and - * the direct rendering driver supports it. - * - * If the display is not capable of direct rendering, then the extension - * is enabled if and only if the client-side library and the server - * support it. - */ - - if ( display_is_direct_capable ) { - for ( i = 0 ; i < 8 ; i++ ) { - usable[i] = (client_glx_support[i] & client_glx_only[i]) - | (client_glx_support[i] & psc->direct_support[i] & server_support[i]) - | (client_glx_support[i] & psc->direct_support[i] & direct_glx_only[i]); - } - } - else { - for ( i = 0 ; i < 8 ; i++ ) { - usable[i] = (client_glx_support[i] & client_glx_only[i]) - | (client_glx_support[i] & server_support[i]); - } - } - - psc->effectiveGLXexts = __glXGetStringFromTable( known_glx_extensions, - usable ); -} - - -/** - * Calculate the list of application usable extensions. The resulting - * string is stored in \c gc->extensions. - * - * \param gc Pointer to GLX context. - * \param server_string Extension string from the server. - * \param major_version GL major version from the server. - * \param minor_version GL minor version from the server. - */ - -void -__glXCalculateUsableGLExtensions( __GLXcontext * gc, - const char * server_string, - int major_version, int minor_version ) -{ - unsigned char server_support[ __GL_EXT_BYTES ]; - unsigned char usable[ __GL_EXT_BYTES ]; - unsigned i; - - - __glXExtensionsCtr(); - - (void) memset( server_support, 0, sizeof( server_support ) ); - __glXProcessServerString( known_gl_extensions, server_string, - server_support ); - - - /* Handle lazy servers that don't export all the extensions strings that - * are part of the GL core version that they support. - */ - - for ( i = 0 ; i < __GL_EXT_BYTES ; i++ ) { - if ( (known_gl_extensions[i].version_major != 0) - && ((major_version > known_gl_extensions[i].version_major) - || ((major_version == known_gl_extensions[i].version_major) - && (minor_version >= known_gl_extensions[i].version_minor))) ) { - SET_BIT( server_support, known_gl_extensions[i].bit ); - } - } - - - /* An extension is supported if the client-side (i.e., libGL) supports - * it and the server supports it or the client-side library supports it - * and it only needs client-side support. - */ - - for ( i = 0 ; i < __GL_EXT_BYTES ; i++ ) { - usable[i] = (client_gl_support[i] & client_gl_only[i]) - | (client_gl_support[i] & server_support[i]); - } - - gc->extensions = (unsigned char *) - __glXGetStringFromTable( known_gl_extensions, usable ); - (void) memcpy( gc->gl_extension_bits, usable, sizeof( usable ) ); -} - - -/** - * Calculates the maximum core GL version that can be supported for indirect - * rendering. - */ -void -__glXGetGLVersion( int * major_version, int * minor_version ) -{ - __glXExtensionsCtr(); - *major_version = gl_major; - *minor_version = gl_minor; -} - - -/** - * Get a string representing the set of extensions supported by the client - * library. This is currently only used to send the list of extensions - * supported by the client to the server. - */ -char * -__glXGetClientGLExtensionString( void ) -{ - __glXExtensionsCtr(); - return __glXGetStringFromTable( known_gl_extensions, client_gl_support ); -} |