1/**************************************************************************
2 *
3 * Copyright 2007-2009 VMware, Inc.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28
29/**
30 * The setup code is concerned with point/line/triangle setup and
31 * putting commands/data into the bins.
32 */
33
34
35#ifndef LP_SETUP_CONTEXT_H
36#define LP_SETUP_CONTEXT_H
37
38#include "lp_setup.h"
39#include "lp_rast.h"
40#include "lp_scene.h"
41#include "lp_bld_interp.h"	/* for struct lp_shader_input */
42
43#include "draw/draw_vbuf.h"
44#include "util/u_rect.h"
45#include "util/u_pack_color.h"
46
47#define LP_SETUP_NEW_FS          0x01
48#define LP_SETUP_NEW_CONSTANTS   0x02
49#define LP_SETUP_NEW_BLEND_COLOR 0x04
50#define LP_SETUP_NEW_SCISSOR     0x08
51#define LP_SETUP_NEW_VIEWPORTS   0x10
52#define LP_SETUP_NEW_SSBOS       0x20
53
54struct lp_setup_variant;
55
56
57/** Max number of scenes */
58/* XXX: make multiple scenes per context work, see lp_setup_rasterize_scene */
59#define MAX_SCENES 1
60
61
62
63/**
64 * Point/line/triangle setup context.
65 * Note: "stored" below indicates data which is stored in the bins,
66 * not arbitrary malloc'd memory.
67 *
68 *
69 * Subclass of vbuf_render, plugged directly into the draw module as
70 * the rendering backend.
71 */
72struct lp_setup_context
73{
74   struct vbuf_render base;
75
76   struct pipe_context *pipe;
77   struct vertex_info *vertex_info;
78   uint view_index;
79   uint prim;
80   uint vertex_size;
81   uint nr_vertices;
82   uint sprite_coord_enable, sprite_coord_origin;
83   uint vertex_buffer_size;
84   void *vertex_buffer;
85
86   /* Final pipeline stage for draw module.  Draw module should
87    * create/install this itself now.
88    */
89   struct draw_stage *vbuf;
90   unsigned num_threads;
91   unsigned scene_idx;
92   struct lp_scene *scenes[MAX_SCENES];  /**< all the scenes */
93   struct lp_scene *scene;               /**< current scene being built */
94
95   struct lp_fence *last_fence;
96   struct llvmpipe_query *active_queries[LP_MAX_ACTIVE_BINNED_QUERIES];
97   unsigned active_binned_queries;
98
99   unsigned flatshade_first:1;
100   unsigned ccw_is_frontface:1;
101   unsigned scissor_test:1;
102   unsigned point_tri_clip:1;
103   unsigned point_size_per_vertex:1;
104   unsigned legacy_points:1;
105   unsigned rasterizer_discard:1;
106   unsigned permit_linear_rasterizer:1;
107   unsigned multisample:1;
108   unsigned rectangular_lines:1;
109   unsigned cullmode:2; /**< PIPE_FACE_x */
110   unsigned bottom_edge_rule;
111   float pixel_offset;
112   float line_width;
113   float point_size;
114   int8_t psize_slot;
115   int8_t viewport_index_slot;
116   int8_t layer_slot;
117   int8_t face_slot;
118
119   struct pipe_framebuffer_state fb;
120   struct u_rect framebuffer;
121   struct u_rect scissors[PIPE_MAX_VIEWPORTS];
122   struct u_rect vpwh;
123   struct u_rect draw_regions[PIPE_MAX_VIEWPORTS];   /* intersection of fb & scissor */
124   struct lp_jit_viewport viewports[PIPE_MAX_VIEWPORTS];
125
126   struct {
127      unsigned flags;
128      union util_color color_val[PIPE_MAX_COLOR_BUFS];
129      uint64_t zsmask;
130      uint64_t zsvalue;               /**< lp_rast_clear_zstencil() cmd */
131   } clear;
132
133   enum setup_state {
134      SETUP_FLUSHED,    /**< scene is null */
135      SETUP_CLEARED,    /**< scene exists but has only clears */
136      SETUP_ACTIVE      /**< scene exists and has at least one draw/query */
137   } state;
138
139   struct {
140      const struct lp_rast_state *stored; /**< what's in the scene */
141      struct lp_rast_state current;  /**< currently set state */
142      struct pipe_resource *current_tex[PIPE_MAX_SHADER_SAMPLER_VIEWS];
143      unsigned current_tex_num;
144   } fs;
145
146   /** fragment shader constants */
147   struct {
148      struct pipe_constant_buffer current;
149      unsigned stored_size;
150      const void *stored_data;
151   } constants[LP_MAX_TGSI_CONST_BUFFERS];
152
153   /** fragment shader buffers */
154   struct {
155      struct pipe_shader_buffer current;
156   } ssbos[LP_MAX_TGSI_SHADER_BUFFERS];
157
158   struct {
159      struct pipe_image_view current;
160   } images[LP_MAX_TGSI_SHADER_IMAGES];
161
162   struct {
163      struct pipe_blend_color current;
164      uint8_t *stored;
165   } blend_color;
166
167
168   struct {
169      const struct lp_setup_variant *variant;
170   } setup;
171
172   unsigned dirty;   /**< bitmask of LP_SETUP_NEW_x bits */
173
174   void (*point)( struct lp_setup_context *,
175                  const float (*v0)[4]);
176
177   void (*line)( struct lp_setup_context *,
178                 const float (*v0)[4],
179                 const float (*v1)[4]);
180
181   void (*triangle)( struct lp_setup_context *,
182                     const float (*v0)[4],
183                     const float (*v1)[4],
184                     const float (*v2)[4]);
185
186   boolean
187   (*rect)( struct lp_setup_context *,
188            const float (*v0)[4],
189            const float (*v1)[4],
190            const float (*v2)[4],
191            const float (*v3)[4],
192            const float (*v4)[4],
193            const float (*v5)[4]);
194};
195
196static inline void
197scissor_planes_needed(boolean scis_planes[4], const struct u_rect *bbox,
198                      const struct u_rect *scissor)
199{
200   /* left */
201   scis_planes[0] = (bbox->x0 < scissor->x0);
202   /* right */
203   scis_planes[1] = (bbox->x1 > scissor->x1);
204   /* top */
205   scis_planes[2] = (bbox->y0 < scissor->y0);
206   /* bottom */
207   scis_planes[3] = (bbox->y1 > scissor->y1);
208}
209
210void
211lp_setup_add_scissor_planes(const struct u_rect *scissor,
212                            struct lp_rast_plane *plane_s,
213                            boolean s_planes[4], bool multisample);
214
215void lp_setup_choose_triangle( struct lp_setup_context *setup );
216void lp_setup_choose_line( struct lp_setup_context *setup );
217void lp_setup_choose_point( struct lp_setup_context *setup );
218void lp_setup_choose_rect( struct lp_setup_context *setup );
219
220void lp_setup_init_vbuf(struct lp_setup_context *setup);
221
222boolean lp_setup_update_state( struct lp_setup_context *setup,
223                            boolean update_scene);
224
225void lp_setup_destroy( struct lp_setup_context *setup );
226
227boolean lp_setup_flush_and_restart(struct lp_setup_context *setup);
228
229boolean
230lp_setup_whole_tile(struct lp_setup_context *setup,
231                    const struct lp_rast_shader_inputs *inputs,
232                    int tx, int ty);
233
234boolean
235lp_setup_is_blit(const struct lp_setup_context *setup,
236                 const struct lp_rast_shader_inputs *inputs);
237
238void
239lp_setup_print_triangle(struct lp_setup_context *setup,
240                        const float (*v0)[4],
241                        const float (*v1)[4],
242                        const float (*v2)[4]);
243
244void
245lp_setup_print_vertex(struct lp_setup_context *setup,
246                      const char *name,
247                      const float (*v)[4]);
248
249void
250lp_rect_cw(struct lp_setup_context *setup,
251           const float (*v0)[4],
252           const float (*v1)[4],
253           const float (*v2)[4],
254           boolean frontfacing);
255
256void
257lp_setup_triangle_ccw( struct lp_setup_context *setup,
258                       const float (*v0)[4],
259                       const float (*v1)[4],
260                       const float (*v2)[4],
261                       boolean front );
262
263struct lp_rast_triangle *
264lp_setup_alloc_triangle(struct lp_scene *scene,
265                        unsigned num_inputs,
266                        unsigned nr_planes,
267                        unsigned *tri_size);
268
269struct lp_rast_rectangle *
270lp_setup_alloc_rectangle(struct lp_scene *scene,
271                         unsigned nr_inputs);
272
273boolean
274lp_setup_analyse_triangles(struct lp_setup_context *setup,
275                           const void *vb,
276                           int stride,
277                           int nr);
278
279boolean
280lp_setup_bin_triangle(struct lp_setup_context *setup,
281                      struct lp_rast_triangle *tri,
282                      const struct u_rect *bboxorig,
283                      const struct u_rect *bbox,
284                      int nr_planes,
285                      unsigned scissor_index);
286
287boolean
288lp_setup_bin_rectangle(struct lp_setup_context *setup,
289                       struct lp_rast_rectangle *rect);
290
291
292#endif
293