/**
* Called via gl_framebuffer::Delete() method when this buffer
* is _really_ being deleted.
*/
void
xmesa_delete_framebuffer(struct gl_framebuffer *fb)
{
XMesaBuffer b = XMESA_BUFFER(fb);
if (b->num_alloced > 0) {
/* If no other buffer uses this X colormap then free the colors. */
if (!xmesa_find_buffer(b->display, b->cmap, b)) {
XFreeColors(b->display, b->cmap,
b->alloced_colors, b->num_alloced, 0);
}
}
if (b->gc)
XMesaFreeGC(b->display, b->gc);
if (b->cleargc)
XMesaFreeGC(b->display, b->cleargc);
if (b->swapgc)
XMesaFreeGC(b->display, b->swapgc);
if (fb->Visual.doubleBufferMode) {
/* free back ximage/pixmap/shmregion */
if (b->backxrb->ximage) {
#if defined(USE_XSHM)
if (b->shm) {
XShmDetach( b->display, &b->shminfo );
XDestroyImage( b->backxrb->ximage );
shmdt( b->shminfo.shmaddr );
}
else
#endif
XMesaDestroyImage( b->backxrb->ximage );
b->backxrb->ximage = NULL;
}
if (b->backxrb->pixmap) {
XMesaFreePixmap( b->display, b->backxrb->pixmap );
if (b->xm_visual->hpcr_clear_flag) {
XMesaFreePixmap( b->display,
b->xm_visual->hpcr_clear_pixmap );
XMesaDestroyImage( b->xm_visual->hpcr_clear_ximage );
}
}
}
if (b->rowimage) {
free( b->rowimage->data );
b->rowimage->data = NULL;
XMesaDestroyImage( b->rowimage );
}
_mesa_free_framebuffer_data(fb);
free(fb);
}
/**
* Setup an off-screen pixmap or Ximage to use as the back buffer.
* Input: b - the X/Mesa buffer
*/
static void
alloc_back_buffer(XMesaBuffer b, GLuint width, GLuint height)
{
if (b->db_mode == BACK_XIMAGE) {
/* Deallocate the old backxrb->ximage, if any */
if (b->backxrb->ximage) {
#if defined(USE_XSHM)
if (b->shm) {
XShmDetach(b->xm_visual->display, &b->shminfo);
XDestroyImage(b->backxrb->ximage);
shmdt(b->shminfo.shmaddr);
}
else
#endif
XMesaDestroyImage(b->backxrb->ximage);
b->backxrb->ximage = NULL;
}
if (width == 0 || height == 0)
return;
/* Allocate new back buffer */
if (b->shm == 0 || !alloc_back_shm_ximage(b, width, height)) {
/* Allocate a regular XImage for the back buffer. */
b->backxrb->ximage = XCreateImage(b->xm_visual->display,
b->xm_visual->visinfo->visual,
GET_VISUAL_DEPTH(b->xm_visual),
ZPixmap, 0, /* format, offset */
NULL,
width, height,
8, 0); /* pad, bytes_per_line */
if (!b->backxrb->ximage) {
_mesa_warning(NULL, "alloc_back_buffer: XCreateImage failed.\n");
return;
}
b->backxrb->ximage->data = (char *) MALLOC(b->backxrb->ximage->height
* b->backxrb->ximage->bytes_per_line);
if (!b->backxrb->ximage->data) {
_mesa_warning(NULL, "alloc_back_buffer: MALLOC failed.\n");
XMesaDestroyImage(b->backxrb->ximage);
b->backxrb->ximage = NULL;
}
}
b->backxrb->pixmap = None;
}
else if (b->db_mode == BACK_PIXMAP) {
/* Free the old back pixmap */
if (b->backxrb->pixmap) {
XMesaFreePixmap(b->xm_visual->display, b->backxrb->pixmap);
b->backxrb->pixmap = 0;
}
if (width > 0 && height > 0) {
/* Allocate new back pixmap */
b->backxrb->pixmap = XMesaCreatePixmap(b->xm_visual->display,
b->frontxrb->drawable,
width, height,
GET_VISUAL_DEPTH(b->xm_visual));
}
b->backxrb->ximage = NULL;
b->backxrb->drawable = b->backxrb->pixmap;
}
}
