draw_context.h revision a6171a9dd99713266091982215bf1008c9ac8e64 
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
43struct pipe_context;
44struct draw_context;
45struct draw_stage;
46struct draw_vertex_shader;
47struct draw_geometry_shader;
48struct tgsi_sampler;
49
50
51struct draw_context *draw_create( struct pipe_context *pipe );
52
53void draw_destroy( struct draw_context *draw );
54
55void draw_set_viewport_state( struct draw_context *draw,
56                              const struct pipe_viewport_state *viewport );
57
58void draw_set_clip_state( struct draw_context *pipe,
59                          const struct pipe_clip_state *clip );
60
61void draw_set_rasterizer_state( struct draw_context *draw,
62                                const struct pipe_rasterizer_state *raster,
63                                void *rast_handle );
64
65void draw_set_rasterize_stage( struct draw_context *draw,
66                               struct draw_stage *stage );
67
68void draw_wide_point_threshold(struct draw_context *draw, float threshold);
69
70void draw_wide_line_threshold(struct draw_context *draw, float threshold);
71
72void draw_enable_line_stipple(struct draw_context *draw, boolean enable);
73
74void draw_enable_point_sprites(struct draw_context *draw, boolean enable);
75
76void draw_set_mrd(struct draw_context *draw, double mrd);
77
78boolean
79draw_install_aaline_stage(struct draw_context *draw, struct pipe_context *pipe);
80
81boolean
82draw_install_aapoint_stage(struct draw_context *draw, struct pipe_context *pipe);
83
84boolean
85draw_install_pstipple_stage(struct draw_context *draw, struct pipe_context *pipe);
86
87
88int
89draw_find_shader_output(const struct draw_context *draw,
90                        uint semantic_name, uint semantic_index);
91
92uint
93draw_num_shader_outputs(const struct draw_context *draw);
94
95
96void
97draw_texture_samplers(struct draw_context *draw,
98                      uint num_samplers,
99                      struct tgsi_sampler **samplers);
100
101
102
103/*
104 * Vertex shader functions
105 */
106
107struct draw_vertex_shader *
108draw_create_vertex_shader(struct draw_context *draw,
109                          const struct pipe_shader_state *shader);
110void draw_bind_vertex_shader(struct draw_context *draw,
111                             struct draw_vertex_shader *dvs);
112void draw_delete_vertex_shader(struct draw_context *draw,
113                               struct draw_vertex_shader *dvs);
114
115
116/*
117 * Geometry shader functions
118 */
119struct draw_geometry_shader *
120draw_create_geometry_shader(struct draw_context *draw,
121                            const struct pipe_shader_state *shader);
122void draw_bind_geometry_shader(struct draw_context *draw,
123                               struct draw_geometry_shader *dvs);
124void draw_delete_geometry_shader(struct draw_context *draw,
125                                 struct draw_geometry_shader *dvs);
126
127
128/*
129 * Vertex data functions
130 */
131
132void draw_set_vertex_buffers(struct draw_context *draw,
133                             unsigned count,
134                             const struct pipe_vertex_buffer *buffers);
135
136void draw_set_vertex_elements(struct draw_context *draw,
137			      unsigned count,
138                              const struct pipe_vertex_element *elements);
139
140void
141draw_set_mapped_element_buffer_range( struct draw_context *draw,
142                                      unsigned eltSize,
143                                      int eltBias,
144                                      unsigned min_index,
145                                      unsigned max_index,
146                                      const void *elements );
147
148void draw_set_mapped_element_buffer( struct draw_context *draw,
149                                     unsigned eltSize,
150                                     int eltBias,
151                                     const void *elements );
152
153void draw_set_mapped_vertex_buffer(struct draw_context *draw,
154                                   unsigned attr, const void *buffer);
155
156void
157draw_set_mapped_constant_buffer(struct draw_context *draw,
158                                unsigned shader_type,
159                                unsigned slot,
160                                const void *buffer,
161                                unsigned size);
162
163
164/***********************************************************************
165 * draw_prim.c
166 */
167
168void draw_arrays(struct draw_context *draw, unsigned prim,
169		 unsigned start, unsigned count);
170
171void
172draw_arrays_instanced(struct draw_context *draw,
173                      unsigned mode,
174                      unsigned start,
175                      unsigned count,
176                      unsigned startInstance,
177                      unsigned instanceCount);
178
179void draw_flush(struct draw_context *draw);
180
181
182/*******************************************************************************
183 * Driver backend interface
184 */
185struct vbuf_render;
186void draw_set_render( struct draw_context *draw,
187		      struct vbuf_render *render );
188
189void draw_set_driver_clipping( struct draw_context *draw,
190                               boolean bypass_clipping );
191
192void draw_set_force_passthrough( struct draw_context *draw,
193                                 boolean enable );
194
195/*******************************************************************************
196 * Draw pipeline
197 */
198boolean draw_need_pipeline(const struct draw_context *draw,
199                           const struct pipe_rasterizer_state *rasterizer,
200                           unsigned prim );
201
202#endif /* DRAW_CONTEXT_H */
203