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5564 | serge | 1 | /************************************************************************** |
2 | * |
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3 | * Copyright 2007 VMware, Inc. |
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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 VMWARE 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 | #include "draw_context.h" |
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39 | |||
40 | |||
41 | /** |
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42 | * Basic info for a point/line/triangle primitive. |
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43 | */ |
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44 | struct prim_header { |
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45 | float det; /**< front/back face determinant */ |
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46 | ushort flags; |
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47 | ushort pad; |
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48 | struct vertex_header *v[3]; /**< 1 to 3 vertex pointers */ |
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49 | }; |
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50 | |||
51 | |||
52 | |||
53 | /** |
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54 | * Base class for all primitive drawing stages. |
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55 | */ |
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56 | struct draw_stage |
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57 | { |
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58 | struct draw_context *draw; /**< parent context */ |
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59 | |||
60 | struct draw_stage *next; /**< next stage in pipeline */ |
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61 | const char *name; /**< for debugging */ |
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62 | |||
63 | struct vertex_header **tmp; /**< temp vert storage, such as for clipping */ |
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64 | unsigned nr_tmps; |
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65 | |||
66 | void (*point)( struct draw_stage *, |
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67 | struct prim_header * ); |
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68 | |||
69 | void (*line)( struct draw_stage *, |
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70 | struct prim_header * ); |
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71 | |||
72 | void (*tri)( struct draw_stage *, |
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73 | struct prim_header * ); |
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74 | |||
75 | void (*flush)( struct draw_stage *, |
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76 | unsigned flags ); |
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77 | |||
78 | void (*reset_stipple_counter)( struct draw_stage * ); |
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79 | |||
80 | void (*destroy)( struct draw_stage * ); |
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81 | }; |
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82 | |||
83 | |||
84 | extern struct draw_stage *draw_unfilled_stage( struct draw_context *context ); |
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85 | extern struct draw_stage *draw_twoside_stage( struct draw_context *context ); |
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86 | extern struct draw_stage *draw_offset_stage( struct draw_context *context ); |
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87 | extern struct draw_stage *draw_clip_stage( struct draw_context *context ); |
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88 | extern struct draw_stage *draw_flatshade_stage( struct draw_context *context ); |
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89 | extern struct draw_stage *draw_cull_stage( struct draw_context *context ); |
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90 | extern struct draw_stage *draw_stipple_stage( struct draw_context *context ); |
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91 | extern struct draw_stage *draw_wide_line_stage( struct draw_context *context ); |
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92 | extern struct draw_stage *draw_wide_point_stage( struct draw_context *context ); |
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93 | extern struct draw_stage *draw_validate_stage( struct draw_context *context ); |
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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 | void draw_aapoint_prepare_outputs(struct draw_context *context, |
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105 | struct draw_stage *stage); |
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106 | void draw_aaline_prepare_outputs(struct draw_context *context, |
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107 | struct draw_stage *stage); |
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108 | void draw_unfilled_prepare_outputs(struct draw_context *context, |
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109 | struct draw_stage *stage); |
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110 | |||
111 | /** |
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112 | * Get a writeable copy of a vertex. |
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113 | * \param stage drawing stage info |
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114 | * \param vert the vertex to copy (source) |
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115 | * \param idx index into stage's tmp[] array to put the copy (dest) |
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116 | * \return pointer to the copied vertex |
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117 | */ |
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118 | static INLINE struct vertex_header * |
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119 | dup_vert( struct draw_stage *stage, |
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120 | const struct vertex_header *vert, |
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121 | unsigned idx ) |
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122 | { |
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123 | struct vertex_header *tmp = stage->tmp[idx]; |
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124 | const uint vsize = sizeof(struct vertex_header) |
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125 | + draw_num_shader_outputs(stage->draw) * 4 * sizeof(float); |
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126 | memcpy(tmp, vert, vsize); |
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127 | tmp->vertex_id = UNDEFINED_VERTEX_ID; |
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128 | return tmp; |
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129 | } |
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130 | |||
131 | #endif>>>>>> |