draw_context.h revision ec8cbd79ac4065111365a6720c9564de56855cc8 
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#include "tgsi/tgsi_exec.h"
43
44struct pipe_context;
45struct draw_context;
46struct draw_stage;
47struct draw_vertex_shader;
48struct draw_geometry_shader;
49struct draw_fragment_shader;
50struct tgsi_sampler;
51struct gallivm_state;
52
53/*
54 * structure to contain driver internal information
55 * for stream out support. mapping stores the pointer
56 * to the buffer contents, and internal offset stores
57 * stores an internal counter to how much of the stream
58 * out buffer is used (in bytes).
59 */
60struct draw_so_target {
61   struct pipe_stream_output_target target;
62   void *mapping;
63   int internal_offset;
64};
65
66struct draw_context *draw_create( struct pipe_context *pipe );
67
68struct draw_context *draw_create_no_llvm(struct pipe_context *pipe);
69
70struct draw_context *
71draw_create_gallivm(struct pipe_context *pipe, struct gallivm_state *gallivm);
72
73void draw_destroy( struct draw_context *draw );
74
75void draw_flush(struct draw_context *draw);
76
77void draw_set_viewport_state( struct draw_context *draw,
78                              const struct pipe_viewport_state *viewport );
79
80void draw_set_clip_state( struct draw_context *pipe,
81                          const struct pipe_clip_state *clip );
82
83void draw_set_rasterizer_state( struct draw_context *draw,
84                                const struct pipe_rasterizer_state *raster,
85                                void *rast_handle );
86
87void draw_set_rasterize_stage( struct draw_context *draw,
88                               struct draw_stage *stage );
89
90void draw_wide_point_threshold(struct draw_context *draw, float threshold);
91
92void draw_wide_point_sprites(struct draw_context *draw, boolean draw_sprite);
93
94void draw_wide_line_threshold(struct draw_context *draw, float threshold);
95
96void draw_enable_line_stipple(struct draw_context *draw, boolean enable);
97
98void draw_enable_point_sprites(struct draw_context *draw, boolean enable);
99
100void draw_set_mrd(struct draw_context *draw, double mrd);
101
102boolean
103draw_install_aaline_stage(struct draw_context *draw, struct pipe_context *pipe);
104
105boolean
106draw_install_aapoint_stage(struct draw_context *draw, struct pipe_context *pipe);
107
108boolean
109draw_install_pstipple_stage(struct draw_context *draw, struct pipe_context *pipe);
110
111
112struct tgsi_shader_info *
113draw_get_shader_info(const struct draw_context *draw);
114
115int
116draw_find_shader_output(const struct draw_context *draw,
117                        uint semantic_name, uint semantic_index);
118
119uint
120draw_num_shader_outputs(const struct draw_context *draw);
121
122
123void
124draw_texture_samplers(struct draw_context *draw,
125                      uint shader_type,
126                      uint num_samplers,
127                      struct tgsi_sampler **samplers);
128
129void
130draw_set_sampler_views(struct draw_context *draw,
131                       struct pipe_sampler_view **views,
132                       unsigned num);
133void
134draw_set_samplers(struct draw_context *draw,
135                  struct pipe_sampler_state **samplers,
136                  unsigned num);
137
138void
139draw_set_mapped_texture(struct draw_context *draw,
140                        unsigned sampler_idx,
141                        uint32_t width, uint32_t height, uint32_t depth,
142                        uint32_t first_level, uint32_t last_level,
143                        uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS],
144                        uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS],
145                        const void *data[PIPE_MAX_TEXTURE_LEVELS]);
146
147
148/*
149 * Vertex shader functions
150 */
151
152struct draw_vertex_shader *
153draw_create_vertex_shader(struct draw_context *draw,
154                          const struct pipe_shader_state *shader);
155void draw_bind_vertex_shader(struct draw_context *draw,
156                             struct draw_vertex_shader *dvs);
157void draw_delete_vertex_shader(struct draw_context *draw,
158                               struct draw_vertex_shader *dvs);
159
160
161/*
162 * Fragment shader functions
163 */
164struct draw_fragment_shader *
165draw_create_fragment_shader(struct draw_context *draw,
166                            const struct pipe_shader_state *shader);
167void draw_bind_fragment_shader(struct draw_context *draw,
168                               struct draw_fragment_shader *dvs);
169void draw_delete_fragment_shader(struct draw_context *draw,
170                                 struct draw_fragment_shader *dvs);
171
172/*
173 * Geometry shader functions
174 */
175struct draw_geometry_shader *
176draw_create_geometry_shader(struct draw_context *draw,
177                            const struct pipe_shader_state *shader);
178void draw_bind_geometry_shader(struct draw_context *draw,
179                               struct draw_geometry_shader *dvs);
180void draw_delete_geometry_shader(struct draw_context *draw,
181                                 struct draw_geometry_shader *dvs);
182
183
184/*
185 * Vertex data functions
186 */
187
188void draw_set_vertex_buffers(struct draw_context *draw,
189                             unsigned count,
190                             const struct pipe_vertex_buffer *buffers);
191
192void draw_set_vertex_elements(struct draw_context *draw,
193			      unsigned count,
194                              const struct pipe_vertex_element *elements);
195
196void draw_set_index_buffer(struct draw_context *draw,
197                           const struct pipe_index_buffer *ib);
198
199void draw_set_mapped_index_buffer(struct draw_context *draw,
200                                  const void *elements);
201
202void draw_set_mapped_vertex_buffer(struct draw_context *draw,
203                                   unsigned attr, const void *buffer);
204
205void
206draw_set_mapped_constant_buffer(struct draw_context *draw,
207                                unsigned shader_type,
208                                unsigned slot,
209                                const void *buffer,
210                                unsigned size);
211
212void
213draw_set_mapped_so_buffers(struct draw_context *draw,
214                           void *buffers[PIPE_MAX_SO_BUFFERS],
215                           unsigned num_buffers);
216
217void
218draw_set_mapped_so_targets(struct draw_context *draw,
219                           int num_targets,
220                           struct draw_so_target *targets[PIPE_MAX_SO_BUFFERS]);
221
222void
223draw_set_so_state(struct draw_context *draw,
224                  struct pipe_stream_output_info *state);
225
226
227/***********************************************************************
228 * draw_pt.c
229 */
230
231void draw_vbo(struct draw_context *draw,
232              const struct pipe_draw_info *info);
233
234void draw_arrays(struct draw_context *draw, unsigned prim,
235		 unsigned start, unsigned count);
236
237void
238draw_arrays_instanced(struct draw_context *draw,
239                      unsigned mode,
240                      unsigned start,
241                      unsigned count,
242                      unsigned startInstance,
243                      unsigned instanceCount);
244
245
246/*******************************************************************************
247 * Driver backend interface
248 */
249struct vbuf_render;
250void draw_set_render( struct draw_context *draw,
251		      struct vbuf_render *render );
252
253void draw_set_driver_clipping( struct draw_context *draw,
254                               boolean bypass_clip_xy,
255                               boolean bypass_clip_z,
256                               boolean guard_band_xy);
257
258void draw_set_force_passthrough( struct draw_context *draw,
259                                 boolean enable );
260
261/*******************************************************************************
262 * Draw pipeline
263 */
264boolean draw_need_pipeline(const struct draw_context *draw,
265                           const struct pipe_rasterizer_state *rasterizer,
266                           unsigned prim );
267
268static INLINE int
269draw_get_shader_param(unsigned shader, enum pipe_shader_cap param)
270{
271   switch(shader) {
272   case PIPE_SHADER_VERTEX:
273   case PIPE_SHADER_GEOMETRY:
274      return tgsi_exec_get_shader_param(param);
275   default:
276      return 0;
277   }
278}
279
280#endif /* DRAW_CONTEXT_H */
281