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path: root/src/gallium/drivers/nv40/nv40_surface.c
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/**************************************************************************
 * 
 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
 * All Rights Reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * 
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 * 
 **************************************************************************/

#include "nv40_context.h"
#include "pipe/p_defines.h"
#include "pipe/p_util.h"
#include "pipe/p_winsys.h"
#include "pipe/p_inlines.h"
#include "util/p_tile.h"

static void
nv40_surface_copy(struct pipe_context *pipe, boolean do_flip,
		  struct pipe_surface *dest, unsigned destx, unsigned desty,
		  struct pipe_surface *src, unsigned srcx, unsigned srcy,
		  unsigned width, unsigned height)
{
	struct nv40_context *nv40 = nv40_context(pipe);
	struct nouveau_winsys *nvws = nv40->nvws;

	if (do_flip) {
		/*XXX: This dodgyness will do for now for correctness.  But,
		 *     need to investigate whether the 2D engine is able to
		 *     manage a flip (perhaps SIFM?), if not, use the 3D engine
		 */
		desty += height;
		while (height--) {
			nvws->surface_copy(nvws, dest, destx, desty--, src,
					   srcx, srcy++, width, 1);
		}
	} else {
		nvws->surface_copy(nvws, dest, destx, desty, src, srcx, srcy,
				   width, height);
	}
}

static void
nv40_surface_fill(struct pipe_context *pipe, struct pipe_surface *dest,
		  unsigned destx, unsigned desty, unsigned width,
		  unsigned height, unsigned value)
{
	struct nv40_context *nv40 = nv40_context(pipe);
	struct nouveau_winsys *nvws = nv40->nvws;

	nvws->surface_fill(nvws, dest, destx, desty, width, height, value);
}

void
nv40_init_surface_functions(struct nv40_context *nv40)
{
	nv40->pipe.surface_copy = nv40_surface_copy;
	nv40->pipe.surface_fill = nv40_surface_fill;
}