/**
* Check that a framebuffer's attachments match the window's size.
*
* Called via st_framebuffer_iface::validate()
*
* \param statts array of framebuffer attachments
* \param count number of framebuffer attachments in statts[]
* \param out returns resources for each of the attachments
*/
static boolean
xmesa_st_framebuffer_validate(struct st_context_iface *stctx,
struct st_framebuffer_iface *stfbi,
const enum st_attachment_type *statts,
unsigned count,
struct pipe_resource **out)
{
struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
unsigned statt_mask, new_mask, i;
boolean resized;
boolean ret;
/* build mask of ST_ATTACHMENT bits */
statt_mask = 0x0;
for (i = 0; i < count; i++)
statt_mask |= 1 << statts[i];
/* record newly allocated textures */
new_mask = statt_mask & ~xstfb->texture_mask;
/* If xmesa_strict_invalidate is not set, we will not yet have
* called XGetGeometry(). Do so here:
*/
if (!xmesa_strict_invalidate)
xmesa_check_buffer_size(xstfb->buffer);
resized = (xstfb->buffer->width != xstfb->texture_width ||
xstfb->buffer->height != xstfb->texture_height);
/* revalidate textures */
if (resized || new_mask) {
ret = xmesa_st_framebuffer_validate_textures(stfbi,
xstfb->buffer->width, xstfb->buffer->height, statt_mask);
if (!ret)
return ret;
if (!resized) {
enum st_attachment_type back, front;
back = ST_ATTACHMENT_BACK_LEFT;
front = ST_ATTACHMENT_FRONT_LEFT;
/* copy the contents if front is newly allocated and back is not */
if ((statt_mask & (1 << back)) &&
(new_mask & (1 << front)) &&
!(new_mask & (1 << back))) {
xmesa_st_framebuffer_copy_textures(stfbi, back, front,
0, 0, xstfb->texture_width, xstfb->texture_height);
}
}
}
for (i = 0; i < count; i++) {
out[i] = NULL;
pipe_resource_reference(&out[i], xstfb->textures[statts[i]]);
}
return TRUE;
}
PUBLIC void
XMesaBindTexImage(Display *dpy, XMesaBuffer drawable, int buffer,
const int *attrib_list)
{
struct st_context_iface *st = stapi->get_current(stapi);
struct st_framebuffer_iface* stfbi = drawable->stfb;
struct pipe_resource *res;
int x, y, w, h;
enum st_attachment_type st_attachment = xmesa_attachment_type(buffer);
x = 0;
y = 0;
w = drawable->width;
h = drawable->height;
/* We need to validate our attachments before using them,
* in case the texture doesn't exist yet. */
xmesa_st_framebuffer_validate_textures(stfbi, w, h, 1 << st_attachment);
res = xmesa_get_attachment(stfbi, st_attachment);
if (res) {
struct pipe_context* pipe = xmesa_get_context(stfbi);
enum pipe_format internal_format = res->format;
struct pipe_transfer *tex_xfer;
char *map;
int line, ximage_stride;
XImage *img;
internal_format = choose_pixel_format(drawable->xm_visual);
tex_xfer = pipe_get_transfer(pipe, res,
0, 0, /* level, layer */
PIPE_TRANSFER_WRITE,
x, y,
w, h);
if (!tex_xfer)
return;
/* Grab the XImage that we want to turn into a texture. */
img = XGetImage(dpy,
drawable->ws.drawable,
x, y,
w, h,
AllPlanes,
ZPixmap);
if (!img) {
pipe_transfer_destroy(pipe, tex_xfer);
return;
}
map = pipe_transfer_map(pipe, tex_xfer);
if (!map) {
pipe_transfer_destroy(pipe, tex_xfer);
return;
}
/* The pipe transfer has a pitch rounded up to the nearest 64 pixels.
We assume 32 bit pixels. */
ximage_stride = w * 4;
for (line = 0; line < h; line++)
memcpy(&map[line * tex_xfer->stride],
&img->data[line * ximage_stride],
ximage_stride);
pipe_transfer_unmap(pipe, tex_xfer);
pipe_transfer_destroy(pipe, tex_xfer);
st->teximage(st,
ST_TEXTURE_2D,
0, /* level */
internal_format,
res,
FALSE /* no mipmap */);
}
}