/**
* Copy the contents between the attachments.
*/
static void
xmesa_st_framebuffer_copy_textures(struct st_framebuffer_iface *stfbi,
enum st_attachment_type src_statt,
enum st_attachment_type dst_statt,
unsigned x, unsigned y,
unsigned width, unsigned height)
{
struct xmesa_st_framebuffer *xstfb = xmesa_st_framebuffer(stfbi);
struct pipe_resource *src_ptex = xstfb->textures[src_statt];
struct pipe_resource *dst_ptex = xstfb->textures[dst_statt];
struct pipe_box src_box;
struct pipe_context *pipe;
if (!src_ptex || !dst_ptex)
return;
pipe = xmesa_get_context(stfbi);
u_box_2d(x, y, width, height, &src_box);
if (src_ptex && dst_ptex)
pipe->resource_copy_region(pipe, dst_ptex, 0, x, y, 0,
src_ptex, 0, &src_box);
}
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 */);
}
}