draw_context.h revision a45b7f47ee0e38b288cc8fc4f6a1c013e8c227bc 
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_point_sprites(struct draw_context *draw, boolean draw_sprite);
71
72void draw_wide_line_threshold(struct draw_context *draw, float threshold);
73
74void draw_enable_line_stipple(struct draw_context *draw, boolean enable);
75
76void draw_enable_point_sprites(struct draw_context *draw, boolean enable);
77
78void draw_set_mrd(struct draw_context *draw, double mrd);
79
80boolean
81draw_install_aaline_stage(struct draw_context *draw, struct pipe_context *pipe);
82
83boolean
84draw_install_aapoint_stage(struct draw_context *draw, struct pipe_context *pipe);
85
86boolean
87draw_install_pstipple_stage(struct draw_context *draw, struct pipe_context *pipe);
88
89
90int
91draw_find_shader_output(const struct draw_context *draw,
92                        uint semantic_name, uint semantic_index);
93
94uint
95draw_num_shader_outputs(const struct draw_context *draw);
96
97
98void
99draw_texture_samplers(struct draw_context *draw,
100                      uint num_samplers,
101                      struct tgsi_sampler **samplers);
102
103
104
105/*
106 * Vertex shader functions
107 */
108
109struct draw_vertex_shader *
110draw_create_vertex_shader(struct draw_context *draw,
111                          const struct pipe_shader_state *shader);
112void draw_bind_vertex_shader(struct draw_context *draw,
113                             struct draw_vertex_shader *dvs);
114void draw_delete_vertex_shader(struct draw_context *draw,
115                               struct draw_vertex_shader *dvs);
116
117
118/*
119 * Geometry shader functions
120 */
121struct draw_geometry_shader *
122draw_create_geometry_shader(struct draw_context *draw,
123                            const struct pipe_shader_state *shader);
124void draw_bind_geometry_shader(struct draw_context *draw,
125                               struct draw_geometry_shader *dvs);
126void draw_delete_geometry_shader(struct draw_context *draw,
127                                 struct draw_geometry_shader *dvs);
128
129
130/*
131 * Vertex data functions
132 */
133
134void draw_set_vertex_buffers(struct draw_context *draw,
135                             unsigned count,
136                             const struct pipe_vertex_buffer *buffers);
137
138void draw_set_vertex_elements(struct draw_context *draw,
139			      unsigned count,
140                              const struct pipe_vertex_element *elements);
141
142void
143draw_set_mapped_element_buffer_range( struct draw_context *draw,
144                                      unsigned eltSize,
145                                      int eltBias,
146                                      unsigned min_index,
147                                      unsigned max_index,
148                                      const void *elements );
149
150void draw_set_mapped_element_buffer( struct draw_context *draw,
151                                     unsigned eltSize,
152                                     int eltBias,
153                                     const void *elements );
154
155void draw_set_mapped_vertex_buffer(struct draw_context *draw,
156                                   unsigned attr, const void *buffer);
157
158void
159draw_set_mapped_constant_buffer(struct draw_context *draw,
160                                unsigned shader_type,
161                                unsigned slot,
162                                const void *buffer,
163                                unsigned size);
164
165void
166draw_set_mapped_so_buffers(struct draw_context *draw,
167                           void *buffers[PIPE_MAX_SO_BUFFERS],
168                           unsigned num_buffers);
169void
170draw_set_so_state(struct draw_context *draw,
171                  struct pipe_stream_output_state *state);
172
173
174/***********************************************************************
175 * draw_prim.c
176 */
177
178void draw_arrays(struct draw_context *draw, unsigned prim,
179		 unsigned start, unsigned count);
180
181void
182draw_arrays_instanced(struct draw_context *draw,
183                      unsigned mode,
184                      unsigned start,
185                      unsigned count,
186                      unsigned startInstance,
187                      unsigned instanceCount);
188
189void draw_flush(struct draw_context *draw);
190
191
192/*******************************************************************************
193 * Driver backend interface
194 */
195struct vbuf_render;
196void draw_set_render( struct draw_context *draw,
197		      struct vbuf_render *render );
198
199void draw_set_driver_clipping( struct draw_context *draw,
200                               boolean bypass_clipping );
201
202void draw_set_force_passthrough( struct draw_context *draw,
203                                 boolean enable );
204
205/*******************************************************************************
206 * Draw pipeline
207 */
208boolean draw_need_pipeline(const struct draw_context *draw,
209                           const struct pipe_rasterizer_state *rasterizer,
210                           unsigned prim );
211
212#endif /* DRAW_CONTEXT_H */
213