* This is a port of the infamous "gears" demo to straight GLX (i.e. no GLUT)
* Port by Brian Paul 23 March 2001
*
- * Modified by Ian Romanick <idr@us.ibm.com> 09 April 2003 to support
- * GLX_{MESA,SGI}_swap_control and GLX_OML_sync_control.
- *
* Command line options:
- * -display Name of the display to use.
- * -info print GL implementation information
- * -swap N Attempt to set the swap interval to 1/N second
- * -forcegetrate Get the display refresh rate even if the required GLX
- * extension is not supported.
+ * -info print GL implementation information
+ *
*/
#include <string.h>
#include <X11/Xlib.h>
#include <X11/keysym.h>
-#include <stdint.h>
-#define GLX_GLXEXT_PROTOTYPES
#include <GL/gl.h>
#include <GL/glx.h>
-#ifndef GLX_MESA_swap_control
-typedef GLint ( * PFNGLXSWAPINTERVALMESAPROC) (unsigned interval);
-typedef GLint ( * PFNGLXGETSWAPINTERVALMESAPROC) ( void );
-#endif
-
-#if !defined( GLX_OML_sync_control ) && defined( _STDINT_H )
-#define GLX_OML_sync_control 1
-typedef Bool ( * PFNGLXGETMSCRATEOMLPROC) (Display *dpy, GLXDrawable drawable, int32_t *numerator, int32_t *denominator);
-#endif
#define BENCHMARK
#include <sys/time.h>
#include <unistd.h>
-#define NUL '\0'
-
/* return current time (in seconds) */
static int
current_time(void)
static GLint gear1, gear2, gear3;
static GLfloat angle = 0.0;
-static GLboolean has_OML_sync_control = GL_FALSE;
-static GLboolean has_SGI_swap_control = GL_FALSE;
-static GLboolean has_MESA_swap_control = GL_FALSE;
-
-static char ** extension_table = NULL;
-static unsigned num_extensions;
/*
*
}
-/**
- * Display the refresh rate of the display using the GLX_OML_sync_control
- * extension.
- */
-
-static void
-show_refresh_rate( Display * dpy )
-{
-#ifdef GLX_OML_sync_control
- PFNGLXGETMSCRATEOMLPROC get_msc_rate;
- int32_t n;
- int32_t d;
-
- get_msc_rate = (PFNGLXGETMSCRATEOMLPROC) glXGetProcAddressARB( (const GLubyte *) "glXGetMscRateOML" );
- if ( get_msc_rate != NULL ) {
- (*get_msc_rate)( dpy, glXGetCurrentDrawable(), &n, &d );
- printf( "refresh rate: %.1fHz\n", (float) n / d );
- return;
- }
-#endif
- printf( "glXGetMscRateOML not supported.\n" );
-}
-
-
-/**
- * Fill in the table of extension strings from a supplied extensions string
- * (as returned by glXQueryExtensionsString).
- *
- * \param string String of GLX extensions.
- * \sa is_extension_supported
- */
-
-static void
-make_extension_table( const char * string )
-{
- char ** string_tab;
- unsigned num_strings;
- unsigned base;
- unsigned idx;
- unsigned i;
-
- /* Count the number of spaces in the string. That gives a base-line
- * figure for the number of extension in the string.
- */
-
- num_strings = 1;
- for ( i = 0 ; string[i] != NUL ; i++ ) {
- if ( string[i] == ' ' ) {
- num_strings++;
- }
- }
-
- string_tab = (char **) malloc( sizeof( char * ) * num_strings );
- if ( string_tab == NULL ) {
- return;
- }
-
- base = 0;
- idx = 0;
-
- while ( string[ base ] != NUL ) {
- /* Determine the length of the next extension string.
- */
-
- for ( i = 0
- ; (string[ base + i ] != NUL) && (string[ base + i ] != ' ')
- ; i++ ) {
- /* empty */ ;
- }
-
- if ( i > 0 ) {
- /* If the string was non-zero length, add it to the table. We
- * can get zero length strings if there is a space at the end of
- * the string or if there are two (or more) spaces next to each
- * other in the string.
- */
-
- string_tab[ idx ] = malloc( sizeof( char ) * (i + 1) );
- if ( string_tab[ idx ] == NULL ) {
- return;
- }
-
- (void) memcpy( string_tab[ idx ], & string[ base ], i );
- string_tab[ idx ][i] = NUL;
- idx++;
- }
-
-
- /* Skip to the start of the next extension string.
- */
-
- for ( base += i
- ; (string[ base ] == ' ') && (string[ base ] != NUL)
- ; base++ ) {
- /* empty */ ;
- }
- }
-
- extension_table = string_tab;
- num_extensions = idx;
-}
-
-
-/**
- * Determine of an extension is supported. The extension string table
- * must have already be initialized by calling \c make_extension_table.
- *
- * \praram ext Extension to be tested.
- * \return GL_TRUE of the extension is supported, GL_FALSE otherwise.
- * \sa make_extension_table
- */
-
-static GLboolean
-is_extension_supported( const char * ext )
-{
- unsigned i;
-
- for ( i = 0 ; i < num_extensions ; i++ ) {
- if ( strcmp( ext, extension_table[i] ) == 0 ) {
- return GL_TRUE;
- }
- }
-
- return GL_FALSE;
-}
-
-
int
main(int argc, char *argv[])
{
Window win;
GLXContext ctx;
char *dpyName = ":0";
- int swap_interval = 1;
- GLboolean do_swap_interval = GL_FALSE;
- GLboolean force_get_rate = GL_FALSE;
GLboolean printInfo = GL_FALSE;
int i;
- PFNGLXSWAPINTERVALMESAPROC set_swap_interval = NULL;
- PFNGLXGETSWAPINTERVALMESAPROC get_swap_interval = NULL;
-
for (i = 1; i < argc; i++) {
- if (strcmp(argv[i], "-display") == 0 && i + 1 < argc) {
+ if (strcmp(argv[i], "-display") == 0) {
dpyName = argv[i+1];
i++;
}
else if (strcmp(argv[i], "-info") == 0) {
printInfo = GL_TRUE;
}
- else if (strcmp(argv[i], "-swap") == 0 && i + 1 < argc) {
- swap_interval = atoi( argv[i+1] );
- do_swap_interval = GL_TRUE;
- i++;
- }
- else if (strcmp(argv[i], "-forcegetrate") == 0) {
- /* This option was put in because some DRI drivers don't support the
- * full GLX_OML_sync_control extension, but they do support
- * glXGetMscRateOML.
- */
- force_get_rate = GL_TRUE;
- }
- else if (strcmp(argv[i], "-help") == 0) {
- printf("Usage:\n");
- printf(" gears [options]\n");
- printf("Options:\n");
- printf(" -help Print this information\n");
- printf(" -display displayName Specify X display\n");
- printf(" -info Display GL information\n");
- printf(" -swap N Swap no more than once per N vertical refreshes\n");
- printf(" -forcegetrate Try to use glXGetMscRateOML function\n");
- return 0;
- }
}
dpy = XOpenDisplay(dpyName);
XMapWindow(dpy, win);
glXMakeCurrent(dpy, win, ctx);
- make_extension_table( (char *) glXQueryExtensionsString(dpy,DefaultScreen(dpy)) );
- has_OML_sync_control = is_extension_supported( "GLX_OML_sync_control" );
- has_SGI_swap_control = is_extension_supported( "GLX_SGI_swap_control" );
- has_MESA_swap_control = is_extension_supported( "GLX_MESA_swap_control" );
-
- if ( has_MESA_swap_control ) {
- set_swap_interval = (PFNGLXSWAPINTERVALMESAPROC) glXGetProcAddressARB( (const GLubyte *) "glXSwapIntervalMESA" );
- get_swap_interval = (PFNGLXGETSWAPINTERVALMESAPROC) glXGetProcAddressARB( (const GLubyte *) "glXGetSwapIntervalMESA" );
- }
- else if ( has_SGI_swap_control ) {
- set_swap_interval = (PFNGLXSWAPINTERVALMESAPROC) glXGetProcAddressARB( (const GLubyte *) "glXSwapIntervalSGI" );
- }
-
-
if (printInfo) {
printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
printf("GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS));
- if ( has_OML_sync_control || force_get_rate ) {
- show_refresh_rate( dpy );
- }
-
- if ( get_swap_interval != NULL ) {
- printf("Default swap interval = %d\n", (*get_swap_interval)() );
- }
- }
-
- if ( do_swap_interval ) {
- if ( set_swap_interval != NULL ) {
- if ( ((swap_interval == 0) && !has_MESA_swap_control)
- || (swap_interval < 0) ) {
- printf( "Swap interval must be non-negative or greater than zero "
- "if GLX_MESA_swap_control is not supported.\n" );
- }
- else {
- (*set_swap_interval)( swap_interval );
- }
-
- if ( printInfo && (get_swap_interval != NULL) ) {
- printf("Current swap interval = %d\n", (*get_swap_interval)() );
- }
- }
- else {
- printf("Unable to set swap-interval. Neither GLX_SGI_swap_control "
- "nor GLX_MESA_swap_control are supported.\n" );
- }
}
init();
projects / mesa.git / blobdiff