From 7925274da323d5a896b557181d4016e0391f026f Mon Sep 17 00:00:00 2001 From: Brian Date: Wed, 11 Feb 2009 21:33:59 -0700 Subject: softpipe: rename sp_headers.h to sp_quad.h This header describes the quad-related datatypes afterall. --- src/gallium/drivers/softpipe/sp_quad.h | 94 ++++++++++++++++++++++++++++++++++ 1 file changed, 94 insertions(+) create mode 100644 src/gallium/drivers/softpipe/sp_quad.h (limited to 'src/gallium/drivers/softpipe/sp_quad.h') diff --git a/src/gallium/drivers/softpipe/sp_quad.h b/src/gallium/drivers/softpipe/sp_quad.h new file mode 100644 index 00000000000..37c03bfc092 --- /dev/null +++ b/src/gallium/drivers/softpipe/sp_quad.h @@ -0,0 +1,94 @@ +/************************************************************************** + * + * 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. + * + **************************************************************************/ + +/* Authors: Keith Whitwell + */ + +#ifndef SP_QUAD_H +#define SP_QUAD_H + +#include "pipe/p_state.h" +#include "tgsi/tgsi_exec.h" + +#define PRIM_POINT 1 +#define PRIM_LINE 2 +#define PRIM_TRI 3 + + +/* The rasterizer generates 2x2 quads of fragment and feeds them to + * the current fp_machine (see below). + * Remember that Y=0=top with Y increasing down the window. + */ +#define QUAD_TOP_LEFT 0 +#define QUAD_TOP_RIGHT 1 +#define QUAD_BOTTOM_LEFT 2 +#define QUAD_BOTTOM_RIGHT 3 + +#define MASK_TOP_LEFT (1 << QUAD_TOP_LEFT) +#define MASK_TOP_RIGHT (1 << QUAD_TOP_RIGHT) +#define MASK_BOTTOM_LEFT (1 << QUAD_BOTTOM_LEFT) +#define MASK_BOTTOM_RIGHT (1 << QUAD_BOTTOM_RIGHT) +#define MASK_ALL 0xf + + +/** + * Encodes everything we need to know about a 2x2 pixel block. Uses + * "Channel-Serial" or "SoA" layout. + */ +struct quad_header_input +{ + int x0; + int y0; + float coverage[QUAD_SIZE]; /** fragment coverage for antialiasing */ + unsigned facing:1; /**< Front (0) or back (1) facing? */ + unsigned prim:2; /**< PRIM_POINT, LINE, TRI */ +}; + +struct quad_header_inout +{ + unsigned mask:4; +}; + +struct quad_header_output +{ + /** colors in SOA format (rrrr, gggg, bbbb, aaaa) */ + float color[PIPE_MAX_COLOR_BUFS][NUM_CHANNELS][QUAD_SIZE]; + float depth[QUAD_SIZE]; +}; + +struct quad_header { + struct quad_header_input input; + struct quad_header_inout inout; + struct quad_header_output output; + + const struct tgsi_interp_coef *coef; + const struct tgsi_interp_coef *posCoef; + + unsigned nr_attrs; +}; + +#endif /* SP_QUAD_H */ -- cgit v1.2.3