draw_context.h revision 6dddd184803da5f67f69e7c243dbb596b4dd4b9d 
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
83/**
84 * Sets the rasterization state used by the draw module.
85 * The rast_handle is used to pass the driver specific representation
86 * of the rasterization state. It's going to be used when the
87 * draw module sets the state back on the driver itself using the
88 * pipe::bind_rasterizer_state method.
89 *
90 * NOTE: if you're calling this function from within the pipe's
91 * bind_rasterizer_state you should always call it before binding
92 * the actual state - that's because the draw module can try to
93 * bind its own rasterizer state which would reset your newly
94 * set state. i.e. always do
95 * draw_set_rasterizer_state(driver->draw, state->pipe_state, state);
96 * driver->state.raster = state;
97 */
98void draw_set_rasterizer_state( struct draw_context *draw,
99                                const struct pipe_rasterizer_state *raster,
100                                void *rast_handle );
101
102void draw_set_rasterize_stage( struct draw_context *draw,
103                               struct draw_stage *stage );
104
105void draw_wide_point_threshold(struct draw_context *draw, float threshold);
106
107void draw_wide_point_sprites(struct draw_context *draw, boolean draw_sprite);
108
109void draw_wide_line_threshold(struct draw_context *draw, float threshold);
110
111void draw_enable_line_stipple(struct draw_context *draw, boolean enable);
112
113void draw_enable_point_sprites(struct draw_context *draw, boolean enable);
114
115void draw_set_mrd(struct draw_context *draw, double mrd);
116
117boolean
118draw_install_aaline_stage(struct draw_context *draw, struct pipe_context *pipe);
119
120boolean
121draw_install_aapoint_stage(struct draw_context *draw, struct pipe_context *pipe);
122
123boolean
124draw_install_pstipple_stage(struct draw_context *draw, struct pipe_context *pipe);
125
126
127struct tgsi_shader_info *
128draw_get_shader_info(const struct draw_context *draw);
129
130int
131draw_find_shader_output(const struct draw_context *draw,
132                        uint semantic_name, uint semantic_index);
133
134uint
135draw_num_shader_outputs(const struct draw_context *draw);
136
137
138void
139draw_texture_samplers(struct draw_context *draw,
140                      uint shader_type,
141                      uint num_samplers,
142                      struct tgsi_sampler **samplers);
143
144void
145draw_set_sampler_views(struct draw_context *draw,
146                       struct pipe_sampler_view **views,
147                       unsigned num);
148void
149draw_set_samplers(struct draw_context *draw,
150                  struct pipe_sampler_state **samplers,
151                  unsigned num);
152
153void
154draw_set_mapped_texture(struct draw_context *draw,
155                        unsigned sampler_idx,
156                        uint32_t width, uint32_t height, uint32_t depth,
157                        uint32_t first_level, uint32_t last_level,
158                        uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS],
159                        uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS],
160                        const void *data[PIPE_MAX_TEXTURE_LEVELS]);
161
162
163/*
164 * Vertex shader functions
165 */
166
167struct draw_vertex_shader *
168draw_create_vertex_shader(struct draw_context *draw,
169                          const struct pipe_shader_state *shader);
170void draw_bind_vertex_shader(struct draw_context *draw,
171                             struct draw_vertex_shader *dvs);
172void draw_delete_vertex_shader(struct draw_context *draw,
173                               struct draw_vertex_shader *dvs);
174
175
176/*
177 * Fragment shader functions
178 */
179struct draw_fragment_shader *
180draw_create_fragment_shader(struct draw_context *draw,
181                            const struct pipe_shader_state *shader);
182void draw_bind_fragment_shader(struct draw_context *draw,
183                               struct draw_fragment_shader *dvs);
184void draw_delete_fragment_shader(struct draw_context *draw,
185                                 struct draw_fragment_shader *dvs);
186
187/*
188 * Geometry shader functions
189 */
190struct draw_geometry_shader *
191draw_create_geometry_shader(struct draw_context *draw,
192                            const struct pipe_shader_state *shader);
193void draw_bind_geometry_shader(struct draw_context *draw,
194                               struct draw_geometry_shader *dvs);
195void draw_delete_geometry_shader(struct draw_context *draw,
196                                 struct draw_geometry_shader *dvs);
197
198
199/*
200 * Vertex data functions
201 */
202
203void draw_set_vertex_buffers(struct draw_context *draw,
204                             unsigned count,
205                             const struct pipe_vertex_buffer *buffers);
206
207void draw_set_vertex_elements(struct draw_context *draw,
208			      unsigned count,
209                              const struct pipe_vertex_element *elements);
210
211void draw_set_indexes(struct draw_context *draw,
212                      const void *elements, unsigned elem_size);
213
214void draw_set_mapped_vertex_buffer(struct draw_context *draw,
215                                   unsigned attr, const void *buffer);
216
217void
218draw_set_mapped_constant_buffer(struct draw_context *draw,
219                                unsigned shader_type,
220                                unsigned slot,
221                                const void *buffer,
222                                unsigned size);
223
224void
225draw_set_mapped_so_buffers(struct draw_context *draw,
226                           void *buffers[PIPE_MAX_SO_BUFFERS],
227                           unsigned num_buffers);
228
229void
230draw_set_mapped_so_targets(struct draw_context *draw,
231                           int num_targets,
232                           struct draw_so_target *targets[PIPE_MAX_SO_BUFFERS]);
233
234void
235draw_set_so_state(struct draw_context *draw,
236                  struct pipe_stream_output_info *state);
237
238
239/***********************************************************************
240 * draw_pt.c
241 */
242
243void draw_vbo(struct draw_context *draw,
244              const struct pipe_draw_info *info);
245
246void draw_arrays(struct draw_context *draw, unsigned prim,
247		 unsigned start, unsigned count);
248
249void
250draw_arrays_instanced(struct draw_context *draw,
251                      unsigned mode,
252                      unsigned start,
253                      unsigned count,
254                      unsigned startInstance,
255                      unsigned instanceCount);
256
257
258/*******************************************************************************
259 * Driver backend interface
260 */
261struct vbuf_render;
262void draw_set_render( struct draw_context *draw,
263		      struct vbuf_render *render );
264
265void draw_set_driver_clipping( struct draw_context *draw,
266                               boolean bypass_clip_xy,
267                               boolean bypass_clip_z,
268                               boolean guard_band_xy);
269
270void draw_set_force_passthrough( struct draw_context *draw,
271                                 boolean enable );
272
273/*******************************************************************************
274 * Draw pipeline
275 */
276boolean draw_need_pipeline(const struct draw_context *draw,
277                           const struct pipe_rasterizer_state *rasterizer,
278                           unsigned prim );
279
280int
281draw_get_shader_param(unsigned shader, enum pipe_shader_cap param);
282
283int
284draw_get_shader_param_no_llvm(unsigned shader, enum pipe_shader_cap param);
285
286#endif /* DRAW_CONTEXT_H */
287