/**
* A helper function for implementing eglChooseConfig. See _eglFilterArray and
* _eglSortConfigs for the meanings of match and compare.
*/
EGLBoolean
_eglFilterConfigArray(_EGLArray *array, EGLConfig *configs,
EGLint config_size, EGLint *num_configs,
EGLBoolean (*match)(const _EGLConfig *, void *),
EGLint (*compare)(const _EGLConfig *, const _EGLConfig *,
void *),
void *priv_data)
{
_EGLConfig **configList;
EGLint i, count;
if (!num_configs)
return _eglError(EGL_BAD_PARAMETER, "eglChooseConfig");
/* get the number of matched configs */
count = _eglFilterArray(array, NULL, 0,
(_EGLArrayForEach) match, priv_data);
if (!count) {
*num_configs = count;
return EGL_TRUE;
}
configList = malloc(sizeof(*configList) * count);
if (!configList)
return _eglError(EGL_BAD_ALLOC, "eglChooseConfig(out of memory)");
/* get the matched configs */
_eglFilterArray(array, (void **) configList, count,
(_EGLArrayForEach) match, priv_data);
/* perform sorting of configs */
if (configs && count) {
_eglSortConfigs((const _EGLConfig **) configList, count,
compare, priv_data);
count = MIN2(count, config_size);
for (i = 0; i < count; i++)
configs[i] = _eglGetConfigHandle(configList[i]);
}
free(configList);
*num_configs = count;
return EGL_TRUE;
}
struct dri2_egl_config *
dri2_add_config(_EGLDisplay *disp, const __DRIconfig *dri_config, int id,
int depth, EGLint surface_type, const EGLint *attr_list,
const unsigned int *rgba_masks)
{
struct dri2_egl_config *conf;
struct dri2_egl_display *dri2_dpy;
_EGLConfig base;
unsigned int attrib, value, double_buffer;
EGLint key, bind_to_texture_rgb, bind_to_texture_rgba;
unsigned int dri_masks[4] = { 0, 0, 0, 0 };
_EGLConfig *matching_config;
EGLint num_configs = 0;
EGLint config_id;
int i;
dri2_dpy = disp->DriverData;
_eglInitConfig(&base, disp, id);
i = 0;
double_buffer = 0;
bind_to_texture_rgb = 0;
bind_to_texture_rgba = 0;
while (dri2_dpy->core->indexConfigAttrib(dri_config, i++, &attrib, &value)) {
switch (attrib) {
case __DRI_ATTRIB_RENDER_TYPE:
if (value & __DRI_ATTRIB_RGBA_BIT)
value = EGL_RGB_BUFFER;
else if (value & __DRI_ATTRIB_LUMINANCE_BIT)
value = EGL_LUMINANCE_BUFFER;
else
/* not valid */;
_eglSetConfigKey(&base, EGL_COLOR_BUFFER_TYPE, value);
break;
case __DRI_ATTRIB_CONFIG_CAVEAT:
if (value & __DRI_ATTRIB_NON_CONFORMANT_CONFIG)
value = EGL_NON_CONFORMANT_CONFIG;
else if (value & __DRI_ATTRIB_SLOW_BIT)
value = EGL_SLOW_CONFIG;
else
value = EGL_NONE;
_eglSetConfigKey(&base, EGL_CONFIG_CAVEAT, value);
break;
case __DRI_ATTRIB_BIND_TO_TEXTURE_RGB:
bind_to_texture_rgb = value;
break;
case __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA:
bind_to_texture_rgba = value;
break;
case __DRI_ATTRIB_DOUBLE_BUFFER:
double_buffer = value;
break;
case __DRI_ATTRIB_RED_MASK:
dri_masks[0] = value;
break;
case __DRI_ATTRIB_GREEN_MASK:
dri_masks[1] = value;
break;
case __DRI_ATTRIB_BLUE_MASK:
dri_masks[2] = value;
break;
case __DRI_ATTRIB_ALPHA_MASK:
dri_masks[3] = value;
break;
default:
key = dri2_to_egl_attribute_map[attrib];
if (key != 0)
_eglSetConfigKey(&base, key, value);
break;
}
}
if (attr_list)
for (i = 0; attr_list[i] != EGL_NONE; i += 2)
_eglSetConfigKey(&base, attr_list[i], attr_list[i+1]);
if (depth > 0 && depth != base.BufferSize)
return NULL;
if (rgba_masks && memcmp(rgba_masks, dri_masks, sizeof(dri_masks)))
return NULL;
base.NativeRenderable = EGL_TRUE;
base.SurfaceType = surface_type;
if (surface_type & (EGL_PBUFFER_BIT |
(disp->Extensions.NOK_texture_from_pixmap ? EGL_PIXMAP_BIT : 0))) {
base.BindToTextureRGB = bind_to_texture_rgb;
if (base.AlphaSize > 0)
base.BindToTextureRGBA = bind_to_texture_rgba;
}
base.RenderableType = disp->ClientAPIs;
base.Conformant = disp->ClientAPIs;
if (!_eglValidateConfig(&base, EGL_FALSE)) {
_eglLog(_EGL_DEBUG, "DRI2: failed to validate config %d", id);
return NULL;
}
config_id = base.ConfigID;
base.ConfigID = EGL_DONT_CARE;
base.SurfaceType = EGL_DONT_CARE;
num_configs = _eglFilterArray(disp->Configs, (void **) &matching_config, 1,
(_EGLArrayForEach) dri2_match_config, &base);
if (num_configs == 1) {
conf = (struct dri2_egl_config *) matching_config;
if (double_buffer && !conf->dri_double_config)
conf->dri_double_config = dri_config;
else if (!double_buffer && !conf->dri_single_config)
conf->dri_single_config = dri_config;
else
/* a similar config type is already added (unlikely) => discard */
return NULL;
}
else if (num_configs == 0) {
conf = malloc(sizeof *conf);
if (conf == NULL)
return NULL;
memcpy(&conf->base, &base, sizeof base);
if (double_buffer) {
conf->dri_double_config = dri_config;
conf->dri_single_config = NULL;
} else {
conf->dri_single_config = dri_config;
conf->dri_double_config = NULL;
}
conf->base.SurfaceType = 0;
conf->base.ConfigID = config_id;
_eglLinkConfig(&conf->base);
}
else {
assert(0);
return NULL;
}
if (double_buffer) {
surface_type &= ~EGL_PIXMAP_BIT;
if (dri2_dpy->swap_available) {
conf->base.MinSwapInterval = 0;
conf->base.MaxSwapInterval = 1000; /* XXX arbitrary value */
}
}
conf->base.SurfaceType |= surface_type;
return conf;
}
