draw_context.h revision a52c0416d1f2105960b4646e2e268aed26814689 
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
44struct pipe_context;
45struct vertex_buffer;
46struct vertex_info;
47struct draw_context;
48struct draw_stage;
49struct 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
77struct draw_context *draw_create( void );
78
79void draw_destroy( struct draw_context *draw );
80
81void draw_set_viewport_state( struct draw_context *draw,
82                              const struct pipe_viewport_state *viewport );
83
84void draw_set_clip_state( struct draw_context *pipe,
85                          const struct pipe_clip_state *clip );
86
87void draw_set_rasterizer_state( struct draw_context *draw,
88                                const struct pipe_rasterizer_state *raster );
89
90void draw_set_rasterize_stage( struct draw_context *draw,
91                               struct draw_stage *stage );
92
93void draw_wide_point_threshold(struct draw_context *draw, float threshold);
94
95void draw_wide_line_threshold(struct draw_context *draw, float threshold);
96
97void draw_enable_line_stipple(struct draw_context *draw, boolean enable);
98
99void draw_enable_point_sprites(struct draw_context *draw, boolean enable);
100
101
102boolean draw_use_sse(struct draw_context *draw);
103
104void
105draw_install_aaline_stage(struct draw_context *draw, struct pipe_context *pipe);
106
107void
108draw_install_aapoint_stage(struct draw_context *draw, struct pipe_context *pipe);
109
110void
111draw_install_pstipple_stage(struct draw_context *draw, struct pipe_context *pipe);
112
113
114int
115draw_find_vs_output(struct draw_context *draw,
116                    uint semantic_name, uint semantic_index);
117
118uint
119draw_num_vs_outputs(struct draw_context *draw);
120
121
122
123/*
124 * Vertex shader functions
125 */
126
127struct draw_vertex_shader *
128draw_create_vertex_shader(struct draw_context *draw,
129                          const struct pipe_shader_state *shader);
130void draw_bind_vertex_shader(struct draw_context *draw,
131                             struct draw_vertex_shader *dvs);
132void draw_delete_vertex_shader(struct draw_context *draw,
133                               struct draw_vertex_shader *dvs);
134
135
136
137/*
138 * Vertex data functions
139 */
140
141void draw_set_vertex_buffers(struct draw_context *draw,
142                             unsigned count,
143                             const struct pipe_vertex_buffer *buffers);
144
145void draw_set_vertex_elements(struct draw_context *draw,
146			      unsigned count,
147                              const struct pipe_vertex_element *elements);
148
149void draw_set_mapped_element_buffer( struct draw_context *draw,
150                                     unsigned eltSize, void *elements );
151
152void draw_set_mapped_vertex_buffer(struct draw_context *draw,
153                                   unsigned attr, const void *buffer);
154
155void draw_set_mapped_constant_buffer(struct draw_context *draw,
156                                     const void *buffer);
157
158
159/***********************************************************************
160 * draw_prim.c
161 */
162
163void draw_arrays(struct draw_context *draw, unsigned prim,
164		 unsigned start, unsigned count);
165
166void draw_flush(struct draw_context *draw);
167
168/***********************************************************************
169 * draw_debug.c
170 */
171boolean draw_validate_prim( unsigned prim, unsigned length );
172unsigned draw_trim_prim( unsigned mode, unsigned count );
173
174
175
176
177struct vbuf_render;
178void draw_set_render( struct draw_context *draw,
179		      struct vbuf_render *render );
180
181#endif /* DRAW_CONTEXT_H */
182