- GET_CURRENT_CONTEXT(ctx);
- static unsigned short pixbuf[MAX_WIDTH];
- GLuint x, y;
- GLuint width, height;
- XMesaContext xmesa = XMESA_CONTEXT(ctx);
-
-#ifdef XFree86Server
- x = b->frontxrb->pixmap->x;
- y = b->frontxrb->pixmap->y;
- width = b->frontxrb->pixmap->width;
- height = b->frontxrb->pixmap->height;
- depth = b->frontxrb->pixmap->depth;
-#else
- xmesa_get_window_size(b->display, b, &width, &height);
- x = y = 0;
-#endif
- if (b->mesa_buffer.Width != width || b->mesa_buffer.Height != height) {
- b->mesa_buffer.Width = MIN2((int)width, b->FXctx->width);
- b->mesa_buffer.Height = MIN2((int)height, b->FXctx->height);
- if (b->mesa_buffer.Width & 1)
- b->mesa_buffer.Width--; /* prevent odd width */
- }
-
- /* [dBorca] we're always in the right GR_COLORFORMAT... aren't we? */
- /* grLfbWriteColorFormat(GR_COLORFORMAT_ARGB); */
- if (b->xm_visual->undithered_pf==PF_5R6G5B) {
- /* Special case: 16bpp RGB */
- grLfbReadRegion( GR_BUFFER_FRONTBUFFER, /* src buffer */
- 0, b->FXctx->height - b->mesa_buffer.Height, /*pos*/
- b->mesa_buffer.Width, b->mesa_buffer.Height, /* size */
- b->mesa_buffer.Width * sizeof(GLushort), /* stride */
- b->backxrb->ximage->data); /* dest buffer */
- }
- else if (b->xm_visual->dithered_pf==PF_Dither
- && GET_VISUAL_DEPTH(b->xm_visual)==8) {
- /* Special case: 8bpp RGB */
- for (y=0;y<b->mesa_buffer.Height;y++) {
- GLubyte *ptr = (GLubyte*) b->backxrb->ximage->data
- + b->backxrb->ximage->bytes_per_line * y;
- XDITHER_SETUP(y);
-
- /* read row from 3Dfx frame buffer */
- grLfbReadRegion( GR_BUFFER_FRONTBUFFER,
- 0, b->FXctx->height-(b->mesa_buffer.Height-y),
- b->mesa_buffer.Width, 1,
- 0,
- pixbuf );
-
- /* write to XImage back buffer */
- for (x=0;x<b->mesa_buffer.Width;x++) {
- GLubyte r = (pixbuf[x] & 0xf800) >> 8;
- GLubyte g = (pixbuf[x] & 0x07e0) >> 3;
- GLubyte b = (pixbuf[x] & 0x001f) << 3;
- *ptr++ = XDITHER( x, r, g, b);
- }
- }
- }
- else {
- /* General case: slow! */
- for (y=0;y<b->mesa_buffer.Height;y++) {
- /* read row from 3Dfx frame buffer */
- grLfbReadRegion( GR_BUFFER_FRONTBUFFER,
- 0, b->FXctx->height-(b->mesa_buffer.Height-y),
- b->mesa_buffer.Width, 1,
- 0,
- pixbuf );
-
- /* write to XImage back buffer */
- for (x=0;x<b->mesa_buffer.Width;x++) {
- XMesaPutPixel(b->backxrb->ximage,x,y,
- xmesa_color_to_pixel(ctx,
- (pixbuf[x] & 0xf800) >> 8,
- (pixbuf[x] & 0x07e0) >> 3,
- (pixbuf[x] & 0x001f) << 3,
- 0xff,
- b->xm_visual->undithered_pf));
- }
- }
- }
- /* grLfbWriteColorFormat(GR_COLORFORMAT_ABGR); */