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;
51
52/*
53 * structure to contain driver internal information
54 * for stream out support. mapping stores the pointer
55 * to the buffer contents, and internal offset stores
56 * stores an internal counter to how much of the stream
57 * out buffer is used (in bytes).
58 */
59struct draw_so_target {
60   struct pipe_stream_output_target target;
61   void *mapping;
62   int internal_offset;
63};
64
65struct draw_context *draw_create( struct pipe_context *pipe );
66
67struct draw_context *draw_create_no_llvm(struct pipe_context *pipe);
68
69void draw_destroy( struct draw_context *draw );
70
71void draw_flush(struct draw_context *draw);
72
73void draw_set_viewport_state( struct draw_context *draw,
74                              const struct pipe_viewport_state *viewport );
75
76void draw_set_clip_state( struct draw_context *pipe,
77                          const struct pipe_clip_state *clip );
78
79/**
80 * Sets the rasterization state used by the draw module.
81 * The rast_handle is used to pass the driver specific representation
82 * of the rasterization state. It's going to be used when the
83 * draw module sets the state back on the driver itself using the
84 * pipe::bind_rasterizer_state method.
85 *
86 * NOTE: if you're calling this function from within the pipe's
87 * bind_rasterizer_state you should always call it before binding
88 * the actual state - that's because the draw module can try to
89 * bind its own rasterizer state which would reset your newly
90 * set state. i.e. always do
91 * draw_set_rasterizer_state(driver->draw, state->pipe_state, state);
92 * driver->state.raster = state;
93 */
94void draw_set_rasterizer_state( struct draw_context *draw,
95                                const struct pipe_rasterizer_state *raster,
96                                void *rast_handle );
97
98void draw_set_rasterize_stage( struct draw_context *draw,
99                               struct draw_stage *stage );
100
101void draw_wide_point_threshold(struct draw_context *draw, float threshold);
102
103void draw_wide_point_sprites(struct draw_context *draw, boolean draw_sprite);
104
105void draw_wide_line_threshold(struct draw_context *draw, float threshold);
106
107void draw_enable_line_stipple(struct draw_context *draw, boolean enable);
108
109void draw_enable_point_sprites(struct draw_context *draw, boolean enable);
110
111void draw_set_mrd(struct draw_context *draw, double mrd);
112
113boolean
114draw_install_aaline_stage(struct draw_context *draw, struct pipe_context *pipe);
115
116boolean
117draw_install_aapoint_stage(struct draw_context *draw, struct pipe_context *pipe);
118
119boolean
120draw_install_pstipple_stage(struct draw_context *draw, struct pipe_context *pipe);
121
122
123struct tgsi_shader_info *
124draw_get_shader_info(const struct draw_context *draw);
125
126int
127draw_find_shader_output(const struct draw_context *draw,
128                        uint semantic_name, uint semantic_index);
129
130uint
131draw_num_shader_outputs(const struct draw_context *draw);
132
133
134void
135draw_texture_samplers(struct draw_context *draw,
136                      uint shader_type,
137                      uint num_samplers,
138                      struct tgsi_sampler **samplers);
139
140void
141draw_set_sampler_views(struct draw_context *draw,
142                       unsigned shader_stage,
143                       struct pipe_sampler_view **views,
144                       unsigned num);
145void
146draw_set_samplers(struct draw_context *draw,
147                  unsigned shader_stage,
148                  struct pipe_sampler_state **samplers,
149                  unsigned num);
150
151void
152draw_set_mapped_texture(struct draw_context *draw,
153                        unsigned shader_stage,
154                        unsigned sampler_idx,
155                        uint32_t width, uint32_t height, uint32_t depth,
156                        uint32_t first_level, uint32_t last_level,
157                        uint32_t row_stride[PIPE_MAX_TEXTURE_LEVELS],
158                        uint32_t img_stride[PIPE_MAX_TEXTURE_LEVELS],
159                        const void *data[PIPE_MAX_TEXTURE_LEVELS]);
160
161
162/*
163 * Vertex shader functions
164 */
165
166struct draw_vertex_shader *
167draw_create_vertex_shader(struct draw_context *draw,
168                          const struct pipe_shader_state *shader);
169void draw_bind_vertex_shader(struct draw_context *draw,
170                             struct draw_vertex_shader *dvs);
171void draw_delete_vertex_shader(struct draw_context *draw,
172                               struct draw_vertex_shader *dvs);
173
174
175/*
176 * Fragment shader functions
177 */
178struct draw_fragment_shader *
179draw_create_fragment_shader(struct draw_context *draw,
180                            const struct pipe_shader_state *shader);
181void draw_bind_fragment_shader(struct draw_context *draw,
182                               struct draw_fragment_shader *dvs);
183void draw_delete_fragment_shader(struct draw_context *draw,
184                                 struct draw_fragment_shader *dvs);
185
186/*
187 * Geometry shader functions
188 */
189struct draw_geometry_shader *
190draw_create_geometry_shader(struct draw_context *draw,
191                            const struct pipe_shader_state *shader);
192void draw_bind_geometry_shader(struct draw_context *draw,
193                               struct draw_geometry_shader *dvs);
194void draw_delete_geometry_shader(struct draw_context *draw,
195                                 struct draw_geometry_shader *dvs);
196
197
198/*
199 * Vertex data functions
200 */
201
202void draw_set_vertex_buffers(struct draw_context *draw,
203                             unsigned count,
204                             const struct pipe_vertex_buffer *buffers);
205
206void draw_set_vertex_elements(struct draw_context *draw,
207			      unsigned count,
208                              const struct pipe_vertex_element *elements);
209
210void draw_set_indexes(struct draw_context *draw,
211                      const void *elements, unsigned elem_size);
212
213void draw_set_mapped_vertex_buffer(struct draw_context *draw,
214                                   unsigned attr, const void *buffer);
215
216void
217draw_set_mapped_constant_buffer(struct draw_context *draw,
218                                unsigned shader_type,
219                                unsigned slot,
220                                const void *buffer,
221                                unsigned size);
222
223void
224draw_set_mapped_so_buffers(struct draw_context *draw,
225                           void *buffers[PIPE_MAX_SO_BUFFERS],
226                           unsigned num_buffers);
227
228void
229draw_set_mapped_so_targets(struct draw_context *draw,
230                           int num_targets,
231                           struct draw_so_target *targets[PIPE_MAX_SO_BUFFERS]);
232
233void
234draw_set_so_state(struct draw_context *draw,
235                  struct pipe_stream_output_info *state);
236
237
238/***********************************************************************
239 * draw_pt.c
240 */
241
242void draw_vbo(struct draw_context *draw,
243              const struct pipe_draw_info *info);
244
245void draw_arrays(struct draw_context *draw, unsigned prim,
246		 unsigned start, unsigned count);
247
248void
249draw_arrays_instanced(struct draw_context *draw,
250                      unsigned mode,
251                      unsigned start,
252                      unsigned count,
253                      unsigned startInstance,
254                      unsigned instanceCount);
255
256
257/*******************************************************************************
258 * Driver backend interface
259 */
260struct vbuf_render;
261void draw_set_render( struct draw_context *draw,
262		      struct vbuf_render *render );
263
264void draw_set_driver_clipping( struct draw_context *draw,
265                               boolean bypass_clip_xy,
266                               boolean bypass_clip_z,
267                               boolean guard_band_xy);
268
269void draw_set_force_passthrough( struct draw_context *draw,
270                                 boolean enable );
271
272/*******************************************************************************
273 * Draw pipeline
274 */
275boolean draw_need_pipeline(const struct draw_context *draw,
276                           const struct pipe_rasterizer_state *rasterizer,
277                           unsigned prim );
278
279int
280draw_get_shader_param(unsigned shader, enum pipe_shader_cap param);
281
282int
283draw_get_shader_param_no_llvm(unsigned shader, enum pipe_shader_cap param);
284
285#endif /* DRAW_CONTEXT_H */
286