static boolean
st_api_make_current(struct st_api *stapi, struct st_context_iface *stctxi,
struct st_framebuffer_iface *stdrawi,
struct st_framebuffer_iface *streadi)
{
struct st_context *st = (struct st_context *) stctxi;
struct st_framebuffer *stdraw, *stread;
boolean ret;
_glapi_check_multithread();
if (st) {
/* reuse or create the draw fb */
stdraw = st_framebuffer_reuse_or_create(st->ctx->WinSysDrawBuffer,
stdrawi);
if (streadi != stdrawi) {
/* do the same for the read fb */
stread = st_framebuffer_reuse_or_create(st->ctx->WinSysReadBuffer,
streadi);
}
else {
stread = NULL;
/* reuse the draw fb for the read fb */
if (stdraw)
st_framebuffer_reference(&stread, stdraw);
}
if (stdraw && stread) {
st_framebuffer_validate(stdraw, st);
if (stread != stdraw)
st_framebuffer_validate(stread, st);
ret = _mesa_make_current(st->ctx, &stdraw->Base, &stread->Base);
st->draw_stamp = stdraw->stamp - 1;
st->read_stamp = stread->stamp - 1;
st_context_validate(st, stdraw, stread);
}
else {
struct gl_framebuffer *incomplete = _mesa_get_incomplete_framebuffer();
ret = _mesa_make_current(st->ctx, incomplete, incomplete);
}
st_framebuffer_reference(&stdraw, NULL);
st_framebuffer_reference(&stread, NULL);
}
else {
ret = _mesa_make_current(NULL, NULL, NULL);
}
return ret;
}
static struct st_framebuffer *
st_framebuffer_reuse_or_create(struct gl_framebuffer *fb,
struct st_framebuffer_iface *stfbi)
{
struct st_framebuffer *cur = st_ws_framebuffer(fb), *stfb = NULL;
if (cur && cur->iface == stfbi) {
/* reuse the current stfb */
st_framebuffer_reference(&stfb, cur);
}
else {
/* create a new one */
stfb = st_framebuffer_create(stfbi);
}
return stfb;
}
static struct st_framebuffer *
st_framebuffer_reuse_or_create(struct gl_framebuffer *fb,
struct st_framebuffer_iface *stfbi)
{
struct st_framebuffer *cur = st_ws_framebuffer(fb), *stfb = NULL;
/* dummy framebuffers cant be used as st_framebuffer */
if (cur && &cur->Base != _mesa_get_incomplete_framebuffer() &&
cur->iface == stfbi) {
/* reuse the current stfb */
st_framebuffer_reference(&stfb, cur);
}
else {
/* create a new one */
stfb = st_framebuffer_create(stfbi);
}
return stfb;
}
static boolean
st_api_make_current(struct st_api *stapi, struct st_context_iface *stctxi,
struct st_framebuffer_iface *stdrawi,
struct st_framebuffer_iface *streadi)
{
struct st_context *st = (struct st_context *) stctxi;
struct st_framebuffer *stdraw, *stread;
boolean ret;
_glapi_check_multithread();
if (st) {
/* reuse or create the draw fb */
stdraw = st_framebuffer_reuse_or_create(st->ctx->WinSysDrawBuffer,
stdrawi);
if (streadi != stdrawi) {
/* do the same for the read fb */
stread = st_framebuffer_reuse_or_create(st->ctx->WinSysReadBuffer,
streadi);
}
else {
stread = NULL;
/* reuse the draw fb for the read fb */
if (stdraw)
st_framebuffer_reference(&stread, stdraw);
}
if (stdraw && stread) {
if (stctxi != st_api_get_current(stapi)) {
p_atomic_set(&stdraw->revalidate, TRUE);
p_atomic_set(&stread->revalidate, TRUE);
}
st_framebuffer_validate(stdraw, st);
if (stread != stdraw)
st_framebuffer_validate(stread, st);
/* modify the draw/read buffers of the context */
if (stdraw->iface) {
st_visual_to_default_buffer(stdraw->iface->visual,
&st->ctx->Color.DrawBuffer[0], NULL);
}
if (stread->iface) {
st_visual_to_default_buffer(stread->iface->visual,
&st->ctx->Pixel.ReadBuffer, NULL);
}
ret = _mesa_make_current(st->ctx, &stdraw->Base, &stread->Base);
}
else {
struct gl_framebuffer *incomplete = _mesa_get_incomplete_framebuffer();
ret = _mesa_make_current(st->ctx, incomplete, incomplete);
}
st_framebuffer_reference(&stdraw, NULL);
st_framebuffer_reference(&stread, NULL);
}
else {
ret = _mesa_make_current(NULL, NULL, NULL);
}
return ret;
}
