diff options
Diffstat (limited to 'src/glx/x11/glxextensions.c')
| -rw-r--r-- | src/glx/x11/glxextensions.c | 376 |
1 files changed, 184 insertions, 192 deletions
diff --git a/src/glx/x11/glxextensions.c b/src/glx/x11/glxextensions.c index 1d99b61db08..051433a006c 100644 --- a/src/glx/x11/glxextensions.c +++ b/src/glx/x11/glxextensions.c @@ -34,7 +34,7 @@ #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))) @@ -48,27 +48,29 @@ #define EXT_ENABLED(bit,supported) (IS_SET( supported, bit )) -struct extension_info { - const char * const name; - unsigned name_len; +struct extension_info +{ + const char *const name; + unsigned name_len; - unsigned char bit; + 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 + 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? */ }; +/* *INDENT-OFF* */ 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 }, @@ -97,7 +99,7 @@ static const struct extension_info known_glx_extensions[] = { { GLX(SGIS_color_range), VER(0,0), N, N, N, N }, { GLX(SGIS_multisample), VER(0,0), Y, Y, N, N }, { GLX(SGIX_fbconfig), VER(1,3), Y, Y, N, N }, - { GLX(SGIX_pbuffer), VER(1,3), Y, N, N, N }, + { GLX(SGIX_pbuffer), VER(1,3), Y, Y, 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_visual_select_group), VER(0,0), Y, Y, N, N }, @@ -245,14 +247,15 @@ static const struct extension_info known_gl_extensions[] = { { GL(SUN_slice_accum), VER(0,0), Y, N, N, N }, { NULL } }; +/* *INDENT-ON* */ /* 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 ]; +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 @@ -267,12 +270,13 @@ static const unsigned gl_major = 1; static const unsigned gl_minor = 4; /* client extensions string */ -static const char * __glXGLXClientExtensions = NULL; +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 ); +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. @@ -283,24 +287,24 @@ static void __glXProcessServerString( const struct extension_info * ext, * \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 ) +set_glx_extension(const struct extension_info *ext, + const char *name, unsigned name_len, GLboolean state, + unsigned char *supported) { - unsigned i; + 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 ); - } + 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; + return; } } } @@ -321,121 +325,106 @@ set_glx_extension( const struct extension_info * ext, * the data pointed by \c server_support must be preinitialized to zero. */ static void -__glXProcessServerString( const struct extension_info * ext, - const char * server_string, - unsigned char * server_support ) +__glXProcessServerString(const struct extension_info *ext, + const char *server_string, + unsigned char *server_support) { - unsigned base; - unsigned len; + unsigned base; + unsigned len; - for ( base = 0 ; server_string[ base ] != NUL ; /* empty */ ) { + 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 */ + 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 ); + 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 */ + 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 ) +__glXEnableDirectExtension(__GLXscreenConfigs * psc, const char *name) { __glXExtensionsCtr(); __glXExtensionsCtrScreen(psc); - set_glx_extension( known_glx_extensions, name, strlen( name ), GL_TRUE, - psc->direct_support ); -} + set_glx_extension(known_glx_extensions, + name, strlen(name), GL_TRUE, psc->direct_support); +} /** * Initialize global extension support tables. */ static void -__glXExtensionsCtr( void ) +__glXExtensionsCtr(void) { - unsigned i; + unsigned i; static GLboolean ext_list_first_time = GL_TRUE; - if ( ext_list_first_time ) { + 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_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 ) ); + (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; + 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].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].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].client_only) { + SET_BIT(client_glx_only, bit); + } - if ( known_glx_extensions[i].direct_only ) { - SET_BIT( direct_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; + 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_support) { + SET_BIT(client_gl_support, bit); + } - if ( known_gl_extensions[i].client_only ) { - SET_BIT( client_gl_only, 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 ); + fprintf(stderr, "[%s:%u] Maximum client library version: %u.%u\n", + __func__, __LINE__, gl_major, gl_minor); #endif } } @@ -448,13 +437,13 @@ __glXExtensionsCtr( void ) */ static void -__glXExtensionsCtrScreen( __GLXscreenConfigs *psc ) +__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 ) ); - } + 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)); + } } @@ -468,14 +457,14 @@ __glXExtensionsCtrScreen( __GLXscreenConfigs *psc ) * \c NULL, then \c GL_FALSE is returned. */ GLboolean -__glXExtensionBitIsEnabled( __GLXscreenConfigs *psc, unsigned bit ) +__glXExtensionBitIsEnabled(__GLXscreenConfigs * psc, unsigned bit) { GLboolean enabled = GL_FALSE; - if ( psc != NULL ) { + if (psc != NULL) { __glXExtensionsCtr(); - __glXExtensionsCtrScreen( psc ); - enabled = EXT_ENABLED( bit, psc->direct_support ); + __glXExtensionsCtrScreen(psc); + enabled = EXT_ENABLED(bit, psc->direct_support); } return enabled; @@ -487,12 +476,12 @@ __glXExtensionBitIsEnabled( __GLXscreenConfigs *psc, unsigned bit ) * */ GLboolean -__glExtensionBitIsEnabled( const __GLXcontext * gc, unsigned bit ) +__glExtensionBitIsEnabled(const __GLXcontext * gc, unsigned bit) { GLboolean enabled = GL_FALSE; - if ( gc != NULL ) { - enabled = EXT_ENABLED( bit, gc->gl_extension_bits ); + if (gc != NULL) { + enabled = EXT_ENABLED(bit, gc->gl_extension_bits); } return enabled; @@ -504,34 +493,34 @@ __glExtensionBitIsEnabled( const __GLXcontext * gc, unsigned bit ) * Convert a bit-field to a string of supported extensions. */ static char * -__glXGetStringFromTable( const struct extension_info * ext, - const unsigned char * supported ) +__glXGetStringFromTable(const struct extension_info *ext, + const unsigned char *supported) { - unsigned i; - unsigned ext_str_len; - char * ext_str; - char * point; + 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; + 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 ) { + 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; + 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 = ' '; + point++; + } } *point = '\0'; @@ -545,12 +534,12 @@ __glXGetStringFromTable( const struct extension_info * ext, * Get the string of client library supported extensions. */ const char * -__glXGetClientExtensions( void ) +__glXGetClientExtensions(void) { - if ( __glXGLXClientExtensions == NULL ) { + if (__glXGLXClientExtensions == NULL) { __glXExtensionsCtr(); - __glXGLXClientExtensions = __glXGetStringFromTable( known_glx_extensions, - client_glx_support ); + __glXGLXClientExtensions = __glXGetStringFromTable(known_glx_extensions, + client_glx_support); } return __glXGLXClientExtensions; @@ -568,20 +557,20 @@ __glXGetClientExtensions( void ) */ void -__glXCalculateUsableExtensions( __GLXscreenConfigs *psc, - GLboolean display_is_direct_capable, - int minor_version ) +__glXCalculateUsableExtensions(__GLXscreenConfigs * psc, + GLboolean display_is_direct_capable, + int minor_version) { unsigned char server_support[8]; unsigned char usable[8]; - unsigned i; + unsigned i; __glXExtensionsCtr(); - __glXExtensionsCtrScreen( psc ); + __glXExtensionsCtrScreen(psc); - (void) memset( server_support, 0, sizeof( server_support ) ); - __glXProcessServerString( known_glx_extensions, - psc->serverGLXexts, server_support ); + (void) memset(server_support, 0, sizeof(server_support)); + __glXProcessServerString(known_glx_extensions, + psc->serverGLXexts, server_support); /* This is a hack. Some servers support GLX 1.3 but don't export @@ -590,20 +579,20 @@ __glXCalculateUsableExtensions( __GLXscreenConfigs *psc, * "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 ); - + 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 ); + SET_BIT(server_support, EXT_import_context_bit); } @@ -617,22 +606,24 @@ __glXCalculateUsableExtensions( __GLXscreenConfigs *psc, * 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]); + 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]); + 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 ); + psc->effectiveGLXexts = __glXGetStringFromTable(known_glx_extensions, + usable); } @@ -647,32 +638,33 @@ __glXCalculateUsableExtensions( __GLXscreenConfigs *psc, */ void -__glXCalculateUsableGLExtensions( __GLXcontext * gc, - const char * server_string, - int major_version, int minor_version ) +__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; + 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 ); + (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 ); + 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); } } @@ -682,14 +674,14 @@ __glXCalculateUsableGLExtensions( __GLXcontext * gc, * and it only needs client-side support. */ - for ( i = 0 ; i < __GL_EXT_BYTES ; i++ ) { + 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]); + | (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 ) ); + gc->extensions = (unsigned char *) + __glXGetStringFromTable(known_gl_extensions, usable); + (void) memcpy(gc->gl_extension_bits, usable, sizeof(usable)); } @@ -698,11 +690,11 @@ __glXCalculateUsableGLExtensions( __GLXcontext * gc, * rendering. */ void -__glXGetGLVersion( int * major_version, int * minor_version ) -{ - __glXExtensionsCtr(); - *major_version = gl_major; - *minor_version = gl_minor; +__glXGetGLVersion(int *major_version, int *minor_version) +{ + __glXExtensionsCtr(); + *major_version = gl_major; + *minor_version = gl_minor; } @@ -712,8 +704,8 @@ __glXGetGLVersion( int * major_version, int * minor_version ) * supported by the client to the server. */ char * -__glXGetClientGLExtensionString( void ) +__glXGetClientGLExtensionString(void) { - __glXExtensionsCtr(); - return __glXGetStringFromTable( known_gl_extensions, client_gl_support ); + __glXExtensionsCtr(); + return __glXGetStringFromTable(known_gl_extensions, client_gl_support); } |