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_tile_soa.h"        /* for TILE_SIZE */
41#include "lp_scene.h"
42#include "lp_bld_interp.h"	/* for struct lp_shader_input */
43
44#include "draw/draw_vbuf.h"
45#include "util/u_rect.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
52
53struct lp_setup_variant;
54
55
56/** Max number of scenes */
57#define MAX_SCENES 2
58
59
60
61/**
62 * Point/line/triangle setup context.
63 * Note: "stored" below indicates data which is stored in the bins,
64 * not arbitrary malloc'd memory.
65 *
66 *
67 * Subclass of vbuf_render, plugged directly into the draw module as
68 * the rendering backend.
69 */
70struct lp_setup_context
71{
72   struct vbuf_render base;
73
74   struct pipe_context *pipe;
75   struct vertex_info *vertex_info;
76   uint prim;
77   uint vertex_size;
78   uint nr_vertices;
79   uint sprite_coord_enable, sprite_coord_origin;
80   uint vertex_buffer_size;
81   void *vertex_buffer;
82
83   /* Final pipeline stage for draw module.  Draw module should
84    * create/install this itself now.
85    */
86   struct draw_stage *vbuf;
87   unsigned num_threads;
88   unsigned scene_idx;
89   struct lp_scene *scenes[MAX_SCENES];  /**< all the scenes */
90   struct lp_scene *scene;               /**< current scene being built */
91
92   struct lp_fence *last_fence;
93   struct llvmpipe_query *active_query;
94
95   boolean flatshade_first;
96   boolean ccw_is_frontface;
97   boolean scissor_test;
98   boolean point_size_per_vertex;
99   unsigned cullmode;
100   float pixel_offset;
101   float line_width;
102   float point_size;
103   float psize;
104
105   struct pipe_framebuffer_state fb;
106   struct u_rect framebuffer;
107   struct u_rect scissor;
108   struct u_rect draw_region;   /* intersection of fb & scissor */
109
110   struct {
111      unsigned flags;
112      union lp_rast_cmd_arg color;    /**< lp_rast_clear_color() cmd */
113      unsigned zsmask;
114      unsigned zsvalue;               /**< lp_rast_clear_zstencil() cmd */
115   } clear;
116
117   enum setup_state {
118      SETUP_FLUSHED,    /**< scene is null */
119      SETUP_CLEARED,    /**< scene exists but has only clears */
120      SETUP_ACTIVE      /**< scene exists and has at least one draw/query */
121   } state;
122
123   struct {
124      const struct lp_rast_state *stored; /**< what's in the scene */
125      struct lp_rast_state current;  /**< currently set state */
126      struct pipe_resource *current_tex[PIPE_MAX_SAMPLERS];
127   } fs;
128
129   /** fragment shader constants */
130   struct {
131      struct pipe_resource *current;
132      unsigned stored_size;
133      const void *stored_data;
134   } constants;
135
136   struct {
137      struct pipe_blend_color current;
138      uint8_t *stored;
139   } blend_color;
140
141
142   struct {
143      const struct lp_setup_variant *variant;
144   } setup;
145
146   unsigned dirty;   /**< bitmask of LP_SETUP_NEW_x bits */
147
148   void (*point)( struct lp_setup_context *,
149                  const float (*v0)[4]);
150
151   void (*line)( struct lp_setup_context *,
152                 const float (*v0)[4],
153                 const float (*v1)[4]);
154
155   void (*triangle)( struct lp_setup_context *,
156                     const float (*v0)[4],
157                     const float (*v1)[4],
158                     const float (*v2)[4]);
159};
160
161void lp_setup_choose_triangle( struct lp_setup_context *setup );
162void lp_setup_choose_line( struct lp_setup_context *setup );
163void lp_setup_choose_point( struct lp_setup_context *setup );
164
165void lp_setup_init_vbuf(struct lp_setup_context *setup);
166
167boolean lp_setup_update_state( struct lp_setup_context *setup,
168                            boolean update_scene);
169
170void lp_setup_destroy( struct lp_setup_context *setup );
171
172boolean lp_setup_flush_and_restart(struct lp_setup_context *setup);
173
174void
175lp_setup_print_triangle(struct lp_setup_context *setup,
176                        const float (*v0)[4],
177                        const float (*v1)[4],
178                        const float (*v2)[4]);
179
180void
181lp_setup_print_vertex(struct lp_setup_context *setup,
182                      const char *name,
183                      const float (*v)[4]);
184
185
186struct lp_rast_triangle *
187lp_setup_alloc_triangle(struct lp_scene *scene,
188                        unsigned num_inputs,
189                        unsigned nr_planes,
190                        unsigned *tri_size);
191
192boolean
193lp_setup_bin_triangle( struct lp_setup_context *setup,
194                       struct lp_rast_triangle *tri,
195                       const struct u_rect *bbox,
196                       int nr_planes );
197
198#endif
199