diff options
Diffstat (limited to 'src/gallium/drivers/softpipe/sp_surface.c')
| -rw-r--r-- | src/gallium/drivers/softpipe/sp_surface.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/src/gallium/drivers/softpipe/sp_surface.c b/src/gallium/drivers/softpipe/sp_surface.c new file mode 100644 index 00000000000..8802ced1874 --- /dev/null +++ b/src/gallium/drivers/softpipe/sp_surface.c @@ -0,0 +1,159 @@ +/************************************************************************** + * + * Copyright 2007 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 "pipe/p_defines.h" +#include "pipe/p_util.h" +#include "pipe/p_inlines.h" +#include "pipe/p_winsys.h" +#include "pipe/util/p_tile.h" +#include "sp_context.h" +#include "sp_surface.h" + + + +/* Assumes all values are within bounds -- no checking at this level - + * do it higher up if required. + */ +static void +sp_surface_copy(struct pipe_context *pipe, + unsigned do_flip, + struct pipe_surface *dst, + unsigned dstx, unsigned dsty, + struct pipe_surface *src, + unsigned srcx, unsigned srcy, unsigned width, unsigned height) +{ + assert( dst->cpp == src->cpp ); + + pipe_copy_rect(pipe_surface_map(dst), + dst->cpp, + dst->pitch, + dstx, dsty, + width, height, + pipe_surface_map(src), + do_flip ? -(int) src->pitch : src->pitch, + srcx, do_flip ? 1 - srcy - height : srcy); + + pipe_surface_unmap(src); + pipe_surface_unmap(dst); +} + + +static void * +get_pointer(struct pipe_surface *dst, void *dst_map, unsigned x, unsigned y) +{ + return (char *)dst_map + (y * dst->pitch + x) * dst->cpp; +} + + +#define UBYTE_TO_USHORT(B) ((B) | ((B) << 8)) + + +/** + * Fill a rectangular sub-region. Need better logic about when to + * push buffers into AGP - will currently do so whenever possible. + */ +static void +sp_surface_fill(struct pipe_context *pipe, + struct pipe_surface *dst, + unsigned dstx, unsigned dsty, + unsigned width, unsigned height, unsigned value) +{ + unsigned i, j; + void *dst_map = pipe_surface_map(dst); + + assert(dst->pitch > 0); + assert(width <= dst->pitch); + + + switch (dst->cpp) { + case 1: + { + ubyte *row = get_pointer(dst, dst_map, dstx, dsty); + for (i = 0; i < height; i++) { + memset(row, value, width); + row += dst->pitch; + } + } + break; + case 2: + { + ushort *row = get_pointer(dst, dst_map, dstx, dsty); + for (i = 0; i < height; i++) { + for (j = 0; j < width; j++) + row[j] = (ushort) value; + row += dst->pitch; + } + } + break; + case 4: + { + unsigned *row = get_pointer(dst, dst_map, dstx, dsty); + for (i = 0; i < height; i++) { + for (j = 0; j < width; j++) + row[j] = value; + row += dst->pitch; + } + } + break; + case 8: + { + /* expand the 4-byte clear value to an 8-byte value */ + ushort *row = (ushort *) get_pointer(dst, dst_map, dstx, dsty); + ushort val0 = UBYTE_TO_USHORT((value >> 0) & 0xff); + ushort val1 = UBYTE_TO_USHORT((value >> 8) & 0xff); + ushort val2 = UBYTE_TO_USHORT((value >> 16) & 0xff); + ushort val3 = UBYTE_TO_USHORT((value >> 24) & 0xff); + val0 = (val0 << 8) | val0; + val1 = (val1 << 8) | val1; + val2 = (val2 << 8) | val2; + val3 = (val3 << 8) | val3; + for (i = 0; i < height; i++) { + for (j = 0; j < width; j++) { + row[j*4+0] = val0; + row[j*4+1] = val1; + row[j*4+2] = val2; + row[j*4+3] = val3; + } + row += dst->pitch * 4; + } + } + break; + default: + assert(0); + break; + } + + pipe_surface_unmap( dst ); +} + + +void +sp_init_surface_functions(struct softpipe_context *sp) +{ + sp->pipe.surface_copy = sp_surface_copy; + sp->pipe.surface_fill = sp_surface_fill; +} |