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
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 boolean multisample;
104 unsigned cullmode;
105 unsigned bottom_edge_rule;
106 float pixel_offset;
107 float line_width;
108 float point_size;
109 int8_t psize_slot;
110 int8_t viewport_index_slot;
111 int8_t layer_slot;
112 int8_t face_slot;
113
114 struct pipe_framebuffer_state fb;
115 struct u_rect framebuffer;
116 struct u_rect scissors[PIPE_MAX_VIEWPORTS];
117 struct u_rect draw_regions[PIPE_MAX_VIEWPORTS]; /* intersection of fb & scissor */
118 struct lp_jit_viewport viewports[PIPE_MAX_VIEWPORTS];
119
120 struct {
121 unsigned flags;
122 union util_color color_val[PIPE_MAX_COLOR_BUFS];
123 uint64_t zsmask;
124 uint64_t zsvalue; /**< lp_rast_clear_zstencil() cmd */
125 } clear;
126
127 enum setup_state {
128 SETUP_FLUSHED, /**< scene is null */
129 SETUP_CLEARED, /**< scene exists but has only clears */
130 SETUP_ACTIVE /**< scene exists and has at least one draw/query */
131 } state;
132
133 struct {
134 const struct lp_rast_state *stored; /**< what's in the scene */
135 struct lp_rast_state current; /**< currently set state */
136 struct pipe_resource *current_tex[PIPE_MAX_SHADER_SAMPLER_VIEWS];
137 unsigned current_tex_num;
138 } fs;
139
140 /** fragment shader constants */
141 struct {
142 struct pipe_constant_buffer current;
143 unsigned stored_size;
144 const void *stored_data;
145 } constants[LP_MAX_TGSI_CONST_BUFFERS];
146
147 /** fragment shader buffers */
148 struct {
149 struct pipe_shader_buffer current;
150 } ssbos[LP_MAX_TGSI_SHADER_BUFFERS];
151
152 struct {
153 struct pipe_image_view current;
154 } images[LP_MAX_TGSI_SHADER_IMAGES];
155
156 struct {
157 struct pipe_blend_color current;
158 uint8_t *stored;
159 } blend_color;
160
161
162 struct {
163 const struct lp_setup_variant *variant;
164 } setup;
165
166 unsigned dirty; /**< bitmask of LP_SETUP_NEW_x bits */
167
168 void (*point)( struct lp_setup_context *,
169 const float (*v0)[4]);
170
171 void (*line)( struct lp_setup_context *,
172 const float (*v0)[4],
173 const float (*v1)[4]);
174
175 void (*triangle)( struct lp_setup_context *,
176 const float (*v0)[4],
177 const float (*v1)[4],
178 const float (*v2)[4]);
179 };
180
181 static inline void
scissor_planes_needed(boolean scis_planes[4],const struct u_rect * bbox,const struct u_rect * scissor)182 scissor_planes_needed(boolean scis_planes[4], const struct u_rect *bbox,
183 const struct u_rect *scissor)
184 {
185 /* left */
186 scis_planes[0] = (bbox->x0 < scissor->x0);
187 /* right */
188 scis_planes[1] = (bbox->x1 > scissor->x1);
189 /* top */
190 scis_planes[2] = (bbox->y0 < scissor->y0);
191 /* bottom */
192 scis_planes[3] = (bbox->y1 > scissor->y1);
193 }
194
195
196 void lp_setup_choose_triangle( struct lp_setup_context *setup );
197 void lp_setup_choose_line( struct lp_setup_context *setup );
198 void lp_setup_choose_point( struct lp_setup_context *setup );
199
200 void lp_setup_init_vbuf(struct lp_setup_context *setup);
201
202 boolean lp_setup_update_state( struct lp_setup_context *setup,
203 boolean update_scene);
204
205 void lp_setup_destroy( struct lp_setup_context *setup );
206
207 boolean lp_setup_flush_and_restart(struct lp_setup_context *setup);
208
209 void
210 lp_setup_print_triangle(struct lp_setup_context *setup,
211 const float (*v0)[4],
212 const float (*v1)[4],
213 const float (*v2)[4]);
214
215 void
216 lp_setup_print_vertex(struct lp_setup_context *setup,
217 const char *name,
218 const float (*v)[4]);
219
220
221 struct lp_rast_triangle *
222 lp_setup_alloc_triangle(struct lp_scene *scene,
223 unsigned num_inputs,
224 unsigned nr_planes,
225 unsigned *tri_size);
226
227 boolean
228 lp_setup_bin_triangle(struct lp_setup_context *setup,
229 struct lp_rast_triangle *tri,
230 const struct u_rect *bboxorig,
231 const struct u_rect *bbox,
232 int nr_planes,
233 unsigned scissor_index);
234
235 #endif
236