127 lines
4.3 KiB
C
127 lines
4.3 KiB
C
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/**************************************************************************
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*
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* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/*
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* Authors:
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* Keith Whitwell <keith@tungstengraphics.com>
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*/
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#ifndef DRAW_PIPE_H
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#define DRAW_PIPE_H
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#include "pipe/p_compiler.h"
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#include "draw_private.h" /* for sizeof(vertex_header) */
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/**
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* Basic info for a point/line/triangle primitive.
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*/
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struct prim_header {
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float det; /**< front/back face determinant */
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ushort flags;
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ushort pad;
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struct vertex_header *v[3]; /**< 1 to 3 vertex pointers */
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};
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/**
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* Base class for all primitive drawing stages.
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*/
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struct draw_stage
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{
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struct draw_context *draw; /**< parent context */
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struct draw_stage *next; /**< next stage in pipeline */
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const char *name; /**< for debugging */
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struct vertex_header **tmp; /**< temp vert storage, such as for clipping */
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unsigned nr_tmps;
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void (*point)( struct draw_stage *,
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struct prim_header * );
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void (*line)( struct draw_stage *,
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struct prim_header * );
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void (*tri)( struct draw_stage *,
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struct prim_header * );
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void (*flush)( struct draw_stage *,
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unsigned flags );
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void (*reset_stipple_counter)( struct draw_stage * );
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void (*destroy)( struct draw_stage * );
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};
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extern struct draw_stage *draw_unfilled_stage( struct draw_context *context );
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extern struct draw_stage *draw_twoside_stage( struct draw_context *context );
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extern struct draw_stage *draw_offset_stage( struct draw_context *context );
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extern struct draw_stage *draw_clip_stage( struct draw_context *context );
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extern struct draw_stage *draw_flatshade_stage( struct draw_context *context );
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extern struct draw_stage *draw_cull_stage( struct draw_context *context );
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extern struct draw_stage *draw_stipple_stage( struct draw_context *context );
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extern struct draw_stage *draw_wide_line_stage( struct draw_context *context );
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extern struct draw_stage *draw_wide_point_stage( struct draw_context *context );
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extern struct draw_stage *draw_validate_stage( struct draw_context *context );
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extern void draw_free_temp_verts( struct draw_stage *stage );
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extern boolean draw_alloc_temp_verts( struct draw_stage *stage, unsigned nr );
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extern void draw_reset_vertex_ids( struct draw_context *draw );
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void draw_pipe_passthrough_tri(struct draw_stage *stage, struct prim_header *header);
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void draw_pipe_passthrough_line(struct draw_stage *stage, struct prim_header *header);
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void draw_pipe_passthrough_point(struct draw_stage *stage, struct prim_header *header);
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/**
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* Get a writeable copy of a vertex.
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* \param stage drawing stage info
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* \param vert the vertex to copy (source)
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* \param idx index into stage's tmp[] array to put the copy (dest)
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* \return pointer to the copied vertex
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*/
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static INLINE struct vertex_header *
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dup_vert( struct draw_stage *stage,
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const struct vertex_header *vert,
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unsigned idx )
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{
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struct vertex_header *tmp = stage->tmp[idx];
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const uint vsize = sizeof(struct vertex_header)
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+ stage->draw->vs.num_vs_outputs * 4 * sizeof(float);
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memcpy(tmp, vert, vsize);
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tmp->vertex_id = UNDEFINED_VERTEX_ID;
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return tmp;
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}
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#endif
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