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Diffstat (limited to 'src/glx/x11/glxextensions.c')
-rw-r--r--src/glx/x11/glxextensions.c375
1 files changed, 184 insertions, 191 deletions
diff --git a/src/glx/x11/glxextensions.c b/src/glx/x11/glxextensions.c
index 1d99b61db0..92109d67bf 100644
--- a/src/glx/x11/glxextensions.c
+++ b/src/glx/x11/glxextensions.c
@@ -1,3 +1,4 @@
+/* -*- mode: c; tab-width: 3; indent-tabs-mode: nil; c-basic-offset: 3; coding: utf-8-unix -*- */
/*
* (C) Copyright IBM Corporation 2002, 2004
* All Rights Reserved.
@@ -34,7 +35,7 @@
#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 +49,29 @@
#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 },
@@ -245,14 +248,15 @@ 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 +271,13 @@ 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 +288,24 @@ 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 +326,106 @@ 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 +438,13 @@ __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 +458,14 @@ __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 +477,12 @@ __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 +494,34 @@ __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 +535,12 @@ __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 +558,20 @@ __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 +580,20 @@ __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 +607,24 @@ __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 +639,33 @@ __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 +675,14 @@ __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 +691,11 @@ __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 +705,8 @@ __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);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 08:03:41 +0000