accelerants/neomagic/Overlay.c

70 	int offset = 0;					/* used to determine next buffer to create */
83 	for (offset = 0; offset < MAXBUFFERS; offset++)
85 		if (si->overlay.myBuffer[offset].buffer == NULL) break;
88 	LOG(4,("Overlay: Allocate_buffer offset = %d\n",offset));
90 	if (offset < MAXBUFFERS)
99 						si->overlay.myBuffer[offset].width = width;
103 						si->overlay.myBuffer[offset].width = (width & ~0x0007) + 8;
105 					si->overlay.myBuffer[offset].bytes_per_row = 2 * si->overlay.myBuffer[offset].width;
109 					if (si->overlay.myBuffer[offset].width > 2048)
131 		if (si->overlay.myBuffer[offset].width > 1024)
152 		si->overlay.myBufInfo[offset].slopspace = si->overlay.myBuffer[offset].width - width;
154 		si->overlay.myBuffer[offset].space = cs;
155 		si->overlay.myBuffer[offset].height = height;
187 		oldsize = si->overlay.myBufInfo[offset].size;
188 		si->overlay.myBufInfo[offset].size =
189 			si->overlay.myBuffer[offset].bytes_per_row * si->overlay.myBuffer[offset].height;
196 		for (cnt = 0; cnt <= offset; cnt++)
201 		/* the > G200 scalers require buffers to be aligned to 16 byte pages cardRAM offset, G200 can do with
202 		 * 8 byte pages cardRAM offset. Compatible settings used, has no real downside consequences here */
205 		/* calculate 'would be' cardRAM offset */
211 			si->overlay.myBufInfo[offset].size += (temp32 - (temp32 & 0xfffffff0));
230 		for (cnt = offset; cnt < MAXBUFFERS; cnt++)
235 				if (si->overlay.myBufInfo[offset].size <= oldsize)
239 					adress -= (oldsize - si->overlay.myBufInfo[offset].size);
240 					si->overlay.myBufInfo[offset].size = oldsize;
253 					si->overlay.myBufInfo[offset].size = oldsize;
276 		si->overlay.myBuffer[offset].buffer = (void *) adress;
282 		for (cnt = 0; cnt <= offset; cnt++)
287 		si->overlay.myBuffer[offset].buffer_dma = (void *) adress;
290 			(uint32)((uint8*)si->overlay.myBuffer[offset].buffer),
291 			(uint32)((uint8*)si->overlay.myBuffer[offset].buffer_dma), cs));
292 		LOG(4,("Overlay: New buffer's size is $%08x\n", si->overlay.myBufInfo[offset].size));
297 		return &si->overlay.myBuffer[offset];
314 	int offset = 0;
319 		for (offset = 0; offset < MAXBUFFERS; offset++)
321 			if (si->overlay.myBuffer[offset].buffer == ob->buffer) break;
324 		if (offset < MAXBUFFERS)
327 			si->overlay.myBuffer[offset].buffer = NULL;
328 			si->overlay.myBuffer[offset].buffer_dma = NULL;
330 			LOG(4,("Overlay: Release_buffer offset = %d, buffer released\n",offset));
354 	int offset = 0;
366 	for (offset = 0; offset < MAXBUFFERS; offset++)
368 		if (si->overlay.myBuffer[offset].buffer == ob->buffer) break;
371 	if (offset < MAXBUFFERS)
507 	int offset = 0; /* used for buffer index */
552 		/* find the buffer's offset */
553 		for (offset = 0; offset < MAXBUFFERS; offset++)
555 			if (si->overlay.myBuffer[offset].buffer == ob->buffer) break;
558 		if (offset < MAXBUFFERS)
560 			LOG(4,("succesfull, switching to buffer %d\n", offset));
562 			nm_configure_bes(ob, ow, ov, offset);