src/gallium/auxiliary/draw/draw_context.h

   1
   2 /**************************************************************************
   3  *
   4  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the
   9  * "Software"), to deal in the Software without restriction, including
  10  * without limitation the rights to use, copy, modify, merge, publish,
  11  * distribute, sub license, and/or sell copies of the Software, and to
  12  * permit persons to whom the Software is furnished to do so, subject to
  13  * the following conditions:
  14  *
  15  * The above copyright notice and this permission notice (including the
  16  * next paragraph) shall be included in all copies or substantial portions
  17  * of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  22  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  23  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  24  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  25  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26  *
  27  **************************************************************************/
  28
  29 /**
  30  * \brief  Public interface into the drawing module.
  31  */
  32
  33 /* Authors:  Keith Whitwell <keith@tungstengraphics.com>
  34  */
  35
  36
  37 #ifndef DRAW_CONTEXT_H
  38 #define DRAW_CONTEXT_H
  39
  40
  41 #include "pipe/p_state.h"
  42
  43
  44 struct pipe_context;
  45 struct vertex_buffer;
  46 struct vertex_info;
  47 struct draw_context;
  48 struct draw_stage;
  49 struct draw_vertex_shader;
  50
  51
  52 /**
  53  * Clipmask flags
  54  */
  55 /*@{*/
  56 #define CLIP_RIGHT_BIT   0x01
  57 #define CLIP_LEFT_BIT    0x02
  58 #define CLIP_TOP_BIT     0x04
  59 #define CLIP_BOTTOM_BIT  0x08
  60 #define CLIP_NEAR_BIT    0x10
  61 #define CLIP_FAR_BIT     0x20
  62 /*@}*/
  63
  64 /**
  65  * Bitshift for each clip flag
  66  */
  67 /*@{*/
  68 #define CLIP_RIGHT_SHIFT        0
  69 #define CLIP_LEFT_SHIFT         1
  70 #define CLIP_TOP_SHIFT          2
  71 #define CLIP_BOTTOM_SHIFT       3
  72 #define CLIP_NEAR_SHIFT         4
  73 #define CLIP_FAR_SHIFT          5
  74 /*@}*/
  75
  76
  77 struct draw_context *draw_create( void );
  78
  79 void draw_destroy( struct draw_context *draw );
  80
  81 void draw_set_viewport_state( struct draw_context *draw,
  82                               const struct pipe_viewport_state *viewport );
  83
  84 void draw_set_clip_state( struct draw_context *pipe,
  85                           const struct pipe_clip_state *clip );
  86
  87 void draw_set_rasterizer_state( struct draw_context *draw,
  88                                 const struct pipe_rasterizer_state *raster );
  89
  90 void draw_set_rasterize_stage( struct draw_context *draw,
  91                                struct draw_stage *stage );
  92
  93 void draw_wide_point_threshold(struct draw_context *draw, float threshold);
  94
  95 void draw_wide_line_threshold(struct draw_context *draw, float threshold);
  96
  97 boolean draw_use_sse(struct draw_context *draw);
  98
  99 void
 100 draw_install_aaline_stage(struct draw_context *draw, struct pipe_context *pipe);
 101
 102 void
 103 draw_install_aapoint_stage(struct draw_context *draw, struct pipe_context *pipe);
 104
 105 void
 106 draw_install_pstipple_stage(struct draw_context *draw, struct pipe_context *pipe);
 107
 108
 109 int
 110 draw_find_vs_output(struct draw_context *draw,
 111                     uint semantic_name, uint semantic_index);
 112
 113 uint
 114 draw_num_vs_outputs(struct draw_context *draw);
 115
 116
 117
 118 /*
 119  * Vertex shader functions
 120  */
 121
 122 struct draw_vertex_shader *
 123 draw_create_vertex_shader(struct draw_context *draw,
 124                           const struct pipe_shader_state *shader);
 125 void draw_bind_vertex_shader(struct draw_context *draw,
 126                              struct draw_vertex_shader *dvs);
 127 void draw_delete_vertex_shader(struct draw_context *draw,
 128                                struct draw_vertex_shader *dvs);
 129
 130
 131
 132 /*
 133  * Vertex data functions
 134  */
 135
 136 void draw_set_vertex_buffer(struct draw_context *draw,
 137                             unsigned attr,
 138                             const struct pipe_vertex_buffer *buffer);
 139
 140 void draw_set_vertex_element(struct draw_context *draw,
 141                              unsigned attr,
 142                              const struct pipe_vertex_element *element);
 143
 144 void draw_set_mapped_element_buffer( struct draw_context *draw,
 145                                      unsigned eltSize, void *elements );
 146
 147 void draw_set_mapped_vertex_buffer(struct draw_context *draw,
 148                                    unsigned attr, const void *buffer);
 149
 150 void draw_set_mapped_constant_buffer(struct draw_context *draw,
 151                                      const void *buffer);
 152
 153
 154 /***********************************************************************
 155  * draw_prim.c
 156  */
 157
 158 void draw_arrays(struct draw_context *draw, unsigned prim,
 159                  unsigned start, unsigned count);
 160
 161 void draw_flush(struct draw_context *draw);
 162
 163 /***********************************************************************
 164  * draw_debug.c
 165  */
 166 boolean draw_validate_prim( unsigned prim, unsigned length );
 167 unsigned draw_trim_prim( unsigned mode, unsigned count );
 168
 169
 170
 171 #endif /* DRAW_CONTEXT_H */