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egl: do proper setup/init of EGL configs

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This commit is contained in:
Brian Paul 2008-06-04 11:35:41 -06:00
parent 97035cb19a
commit af31e5d429
1 changed files with 57 additions and 26 deletions
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83
src/gallium/winsys/egl_xlib/egl_xlib.c
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@ -115,33 +115,67 @@ lookup_context(EGLContext surf)
}
/**
* XXX temporary
* Need to query X server's GLX visuals.
*/
static void
init_configs(_EGLDriver *drv, EGLDisplay dpy)
static unsigned int
bitcount(unsigned int n)
{
_EGLDisplay *disp = _eglLookupDisplay(dpy);
int i;
for (i = 0; i < 2; i++) {
_EGLConfig config;
int id = i + 1;
_eglInitConfig(&config, id);
SET_CONFIG_ATTRIB(&config, EGL_RED_SIZE, 8);
SET_CONFIG_ATTRIB(&config, EGL_GREEN_SIZE, 8);
SET_CONFIG_ATTRIB(&config, EGL_BLUE_SIZE, 8);
SET_CONFIG_ATTRIB(&config, EGL_ALPHA_SIZE, 8);
if (i > 0) {
SET_CONFIG_ATTRIB(&config, EGL_DEPTH_SIZE, 24);
SET_CONFIG_ATTRIB(&config, EGL_STENCIL_SIZE, 8);
}
_eglAddConfig(disp, &config);
unsigned int bits;
for (bits = 0; n > 0; n = n >> 1) {
bits += (n & 1);
}
return bits;
}
/**
* Create the EGLConfigs. (one per X visual)
*/
static void
create_configs(_EGLDriver *drv, EGLDisplay dpy)
{
_EGLDisplay *disp = _eglLookupDisplay(dpy);
XVisualInfo *visInfo, visTemplate;
int num_visuals, i;
/* get list of all X visuals, create an EGL config for each */
visTemplate.screen = DefaultScreen(disp->Xdpy);
visInfo = XGetVisualInfo(disp->Xdpy, VisualScreenMask,
&visTemplate, &num_visuals);
if (!visInfo) {
printf("egl_xlib.c: couldn't get any X visuals\n");
abort();
}
for (i = 0; i < num_visuals; i++) {
_EGLConfig *config = calloc(1, sizeof(_EGLConfig));
int id = i + 1;
int rbits = bitcount(visInfo[i].red_mask);
int gbits = bitcount(visInfo[i].green_mask);
int bbits = bitcount(visInfo[i].blue_mask);
int abits = bbits == 8 ? 8 : 0;
int zbits = 24;
int sbits = 8;
int visid = visInfo[i].visualid;
#if defined(__cplusplus) || defined(c_plusplus)
int vistype = visInfo[i].c_class;
#else
int vistype = visInfo[i].class;
#endif
_eglInitConfig(config, id);
SET_CONFIG_ATTRIB(config, EGL_BUFFER_SIZE, rbits + gbits + bbits + abits);
SET_CONFIG_ATTRIB(config, EGL_RED_SIZE, rbits);
SET_CONFIG_ATTRIB(config, EGL_GREEN_SIZE, gbits);
SET_CONFIG_ATTRIB(config, EGL_BLUE_SIZE, bbits);
SET_CONFIG_ATTRIB(config, EGL_ALPHA_SIZE, abits);
SET_CONFIG_ATTRIB(config, EGL_DEPTH_SIZE, zbits);
SET_CONFIG_ATTRIB(config, EGL_STENCIL_SIZE, sbits);
SET_CONFIG_ATTRIB(config, EGL_NATIVE_VISUAL_ID, visid);
SET_CONFIG_ATTRIB(config, EGL_NATIVE_VISUAL_TYPE, vistype);
_eglAddConfig(disp, config);
}
}
/**
* Called via eglInitialize(), drv->API.Initialize().
@ -150,10 +184,7 @@ static EGLBoolean
xlib_eglInitialize(_EGLDriver *drv, EGLDisplay dpy,
EGLint *minor, EGLint *major)
{
/* visual configs */
init_configs(drv, dpy);
create_configs(drv, dpy);
drv->Initialized = EGL_TRUE;