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| Rev | Author | Line No. | Line |
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| 5563 | serge | 1 | /************************************************************************** |
| 2 | * |
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| 3 | * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas. |
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| 4 | * All Rights Reserved. |
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| 5 | * |
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| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
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| 7 | * copy of this software and associated documentation files (the |
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| 8 | * "Software"), to deal in the Software without restriction, including |
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| 9 | * without limitation the rights to use, copy, modify, merge, publish, |
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| 10 | * distribute, sub license, and/or sell copies of the Software, and to |
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| 11 | * permit persons to whom the Software is furnished to do so, subject to |
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| 12 | * the following conditions: |
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| 13 | * |
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| 14 | * The above copyright notice and this permission notice (including the |
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| 15 | * next paragraph) shall be included in all copies or substantial portions |
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| 16 | * of the Software. |
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| 17 | * |
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| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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| 19 | * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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| 20 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
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| 21 | * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR |
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| 22 | * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
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| 23 | * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
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| 24 | * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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| 25 | * |
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| 26 | **************************************************************************/ |
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| 27 | |||
| 28 | /* |
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| 29 | * Authors: |
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| 30 | * Keith Whitwell |
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| 31 | */ |
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| 32 | |||
| 33 | #ifndef DRAW_PIPE_H |
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| 34 | #define DRAW_PIPE_H |
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| 35 | |||
| 36 | #include "pipe/p_compiler.h" |
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| 37 | #include "draw_private.h" /* for sizeof(vertex_header) */ |
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| 38 | |||
| 39 | |||
| 40 | /** |
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| 41 | * Basic info for a point/line/triangle primitive. |
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| 42 | */ |
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| 43 | struct prim_header { |
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| 44 | float det; /**< front/back face determinant */ |
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| 45 | ushort flags; |
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| 46 | ushort pad; |
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| 47 | struct vertex_header *v[3]; /**< 1 to 3 vertex pointers */ |
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| 48 | }; |
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| 49 | |||
| 50 | |||
| 51 | |||
| 52 | /** |
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| 53 | * Base class for all primitive drawing stages. |
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| 54 | */ |
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| 55 | struct draw_stage |
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| 56 | { |
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| 57 | struct draw_context *draw; /**< parent context */ |
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| 58 | |||
| 59 | struct draw_stage *next; /**< next stage in pipeline */ |
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| 60 | const char *name; /**< for debugging */ |
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| 61 | |||
| 62 | struct vertex_header **tmp; /**< temp vert storage, such as for clipping */ |
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| 63 | unsigned nr_tmps; |
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| 64 | |||
| 65 | void (*point)( struct draw_stage *, |
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| 66 | struct prim_header * ); |
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| 67 | |||
| 68 | void (*line)( struct draw_stage *, |
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| 69 | struct prim_header * ); |
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| 70 | |||
| 71 | void (*tri)( struct draw_stage *, |
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| 72 | struct prim_header * ); |
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| 73 | |||
| 74 | void (*flush)( struct draw_stage *, |
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| 75 | unsigned flags ); |
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| 76 | |||
| 77 | void (*reset_stipple_counter)( struct draw_stage * ); |
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| 78 | |||
| 79 | void (*destroy)( struct draw_stage * ); |
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| 80 | }; |
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| 81 | |||
| 82 | |||
| 83 | extern struct draw_stage *draw_unfilled_stage( struct draw_context *context ); |
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| 84 | extern struct draw_stage *draw_twoside_stage( struct draw_context *context ); |
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| 85 | extern struct draw_stage *draw_offset_stage( struct draw_context *context ); |
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| 86 | extern struct draw_stage *draw_clip_stage( struct draw_context *context ); |
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| 87 | extern struct draw_stage *draw_flatshade_stage( struct draw_context *context ); |
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| 88 | extern struct draw_stage *draw_cull_stage( struct draw_context *context ); |
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| 89 | extern struct draw_stage *draw_stipple_stage( struct draw_context *context ); |
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| 90 | extern struct draw_stage *draw_wide_line_stage( struct draw_context *context ); |
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| 91 | extern struct draw_stage *draw_wide_point_stage( struct draw_context *context ); |
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| 92 | extern struct draw_stage *draw_validate_stage( struct draw_context *context ); |
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| 93 | |||
| 94 | |||
| 95 | extern void draw_free_temp_verts( struct draw_stage *stage ); |
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| 96 | extern boolean draw_alloc_temp_verts( struct draw_stage *stage, unsigned nr ); |
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| 97 | |||
| 98 | extern void draw_reset_vertex_ids( struct draw_context *draw ); |
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| 99 | |||
| 100 | void draw_pipe_passthrough_tri(struct draw_stage *stage, struct prim_header *header); |
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| 101 | void draw_pipe_passthrough_line(struct draw_stage *stage, struct prim_header *header); |
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| 102 | void draw_pipe_passthrough_point(struct draw_stage *stage, struct prim_header *header); |
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| 103 | |||
| 104 | |||
| 105 | |||
| 106 | /** |
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| 107 | * Get a writeable copy of a vertex. |
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| 108 | * \param stage drawing stage info |
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| 109 | * \param vert the vertex to copy (source) |
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| 110 | * \param idx index into stage's tmp[] array to put the copy (dest) |
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| 111 | * \return pointer to the copied vertex |
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| 112 | */ |
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| 113 | static INLINE struct vertex_header * |
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| 114 | dup_vert( struct draw_stage *stage, |
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| 115 | const struct vertex_header *vert, |
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| 116 | unsigned idx ) |
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| 117 | { |
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| 118 | struct vertex_header *tmp = stage->tmp[idx]; |
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| 119 | const uint vsize = sizeof(struct vertex_header) |
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| 120 | + stage->draw->vs.num_vs_outputs * 4 * sizeof(float); |
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| 121 | memcpy(tmp, vert, vsize); |
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| 122 | tmp->vertex_id = UNDEFINED_VERTEX_ID; |
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| 123 | return tmp; |
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| 124 | } |
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| 125 | |||
| 126 | #endif |