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
53
54 struct 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 */
72 struct lp_setup_context
73 {
74 struct vbuf_render base;
75
76 struct pipe_context *pipe;
77 struct vertex_info *vertex_info;
78 uint prim;
79 uint vertex_size;
80 uint nr_vertices;
81 uint sprite_coord_enable, sprite_coord_origin;
82 uint vertex_buffer_size;
83 void *vertex_buffer;
84
85 /* Final pipeline stage for draw module. Draw module should
86 * create/install this itself now.
87 */
88 struct draw_stage *vbuf;
89 unsigned num_threads;
90 unsigned scene_idx;
91 struct lp_scene *scenes[MAX_SCENES]; /**< all the scenes */
92 struct lp_scene *scene; /**< current scene being built */
93
94 struct lp_fence *last_fence;
95 struct llvmpipe_query *active_queries[LP_MAX_ACTIVE_BINNED_QUERIES];
96 unsigned active_binned_queries;
97
98 boolean flatshade_first;
99 boolean ccw_is_frontface;
100 boolean scissor_test;
101 boolean point_size_per_vertex;
102 boolean rasterizer_discard;
103 unsigned cullmode;
104 unsigned bottom_edge_rule;
105 float pixel_offset;
106 float line_width;
107 float point_size;
108 int8_t psize_slot;
109 int8_t viewport_index_slot;
110 int8_t layer_slot;
111 int8_t face_slot;
112
113 struct pipe_framebuffer_state fb;
114 struct u_rect framebuffer;
115 struct u_rect scissors[PIPE_MAX_VIEWPORTS];
116 struct u_rect draw_regions[PIPE_MAX_VIEWPORTS]; /* intersection of fb & scissor */
117 struct lp_jit_viewport viewports[PIPE_MAX_VIEWPORTS];
118
119 struct {
120 unsigned flags;
121 union util_color color_val[PIPE_MAX_COLOR_BUFS];
122 uint64_t zsmask;
123 uint64_t zsvalue; /**< lp_rast_clear_zstencil() cmd */
124 } clear;
125
126 enum setup_state {
127 SETUP_FLUSHED, /**< scene is null */
128 SETUP_CLEARED, /**< scene exists but has only clears */
129 SETUP_ACTIVE /**< scene exists and has at least one draw/query */
130 } state;
131
132 struct {
133 const struct lp_rast_state *stored; /**< what's in the scene */
134 struct lp_rast_state current; /**< currently set state */
135 struct pipe_resource *current_tex[PIPE_MAX_SHADER_SAMPLER_VIEWS];
136 unsigned current_tex_num;
137 } fs;
138
139 /** fragment shader constants */
140 struct {
141 struct pipe_constant_buffer current;
142 unsigned stored_size;
143 const void *stored_data;
144 } constants[LP_MAX_TGSI_CONST_BUFFERS];
145
146 struct {
147 struct pipe_blend_color current;
148 uint8_t *stored;
149 } blend_color;
150
151
152 struct {
153 const struct lp_setup_variant *variant;
154 } setup;
155
156 unsigned dirty; /**< bitmask of LP_SETUP_NEW_x bits */
157
158 void (*point)( struct lp_setup_context *,
159 const float (*v0)[4]);
160
161 void (*line)( struct lp_setup_context *,
162 const float (*v0)[4],
163 const float (*v1)[4]);
164
165 void (*triangle)( struct lp_setup_context *,
166 const float (*v0)[4],
167 const float (*v1)[4],
168 const float (*v2)[4]);
169 };
170
171 static inline void
scissor_planes_needed(boolean scis_planes[4],const struct u_rect * bbox,const struct u_rect * scissor)172 scissor_planes_needed(boolean scis_planes[4], const struct u_rect *bbox,
173 const struct u_rect *scissor)
174 {
175 /* left */
176 scis_planes[0] = (bbox->x0 < scissor->x0);
177 /* right */
178 scis_planes[1] = (bbox->x1 > scissor->x1);
179 /* top */
180 scis_planes[2] = (bbox->y0 < scissor->y0);
181 /* bottom */
182 scis_planes[3] = (bbox->y1 > scissor->y1);
183 }
184
185
186 void lp_setup_choose_triangle( struct lp_setup_context *setup );
187 void lp_setup_choose_line( struct lp_setup_context *setup );
188 void lp_setup_choose_point( struct lp_setup_context *setup );
189
190 void lp_setup_init_vbuf(struct lp_setup_context *setup);
191
192 boolean lp_setup_update_state( struct lp_setup_context *setup,
193 boolean update_scene);
194
195 void lp_setup_destroy( struct lp_setup_context *setup );
196
197 boolean lp_setup_flush_and_restart(struct lp_setup_context *setup);
198
199 void
200 lp_setup_print_triangle(struct lp_setup_context *setup,
201 const float (*v0)[4],
202 const float (*v1)[4],
203 const float (*v2)[4]);
204
205 void
206 lp_setup_print_vertex(struct lp_setup_context *setup,
207 const char *name,
208 const float (*v)[4]);
209
210
211 struct lp_rast_triangle *
212 lp_setup_alloc_triangle(struct lp_scene *scene,
213 unsigned num_inputs,
214 unsigned nr_planes,
215 unsigned *tri_size);
216
217 boolean
218 lp_setup_bin_triangle(struct lp_setup_context *setup,
219 struct lp_rast_triangle *tri,
220 const struct u_rect *bboxorig,
221 const struct u_rect *bbox,
222 int nr_planes,
223 unsigned scissor_index);
224
225 #endif
226