1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 2015 LunarG, Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 * Authors:
25 * Chia-I Wu <olv@lunarg.com>
26 */
27
28 #ifndef ILO_STATE_VF_H
29 #define ILO_STATE_VF_H
30
31 #include "genhw/genhw.h"
32
33 #include "ilo_core.h"
34 #include "ilo_dev.h"
35
36 /*
37 * From the Sandy Bridge PRM, volume 2 part 1, page 93:
38 *
39 * "Up to 34 (DevSNB+) vertex elements are supported."
40 *
41 * "Up to 33 VBs are supported"
42 *
43 * Reserve two VEs and one VB for internal use.
44 */
45 #define ILO_STATE_VF_MAX_ELEMENT_COUNT (34 - 2)
46 #define ILO_STATE_VF_MAX_BUFFER_COUNT (33 - 1)
47
48 enum ilo_state_vf_dirty_bits {
49 ILO_STATE_VF_3DSTATE_VERTEX_ELEMENTS = (1 << 0),
50 ILO_STATE_VF_3DSTATE_VF_SGVS = (1 << 1),
51 ILO_STATE_VF_3DSTATE_VF_INSTANCING = (1 << 2),
52 ILO_STATE_VF_3DSTATE_VERTEX_BUFFERS = (1 << 3),
53 ILO_STATE_VF_3DSTATE_VF = (1 << 4),
54 ILO_STATE_VF_3DSTATE_INDEX_BUFFER = (1 << 5),
55 };
56
57 /**
58 * Fetch a 128-bit vertex attribute.
59 */
60 struct ilo_state_vf_element_info {
61 uint8_t buffer;
62 uint16_t vertex_offset;
63 enum gen_surface_format format;
64
65 uint8_t format_size;
66 uint8_t component_count;
67 bool is_integer;
68
69 /* must be the same for those share the same buffer before Gen8 */
70 bool instancing_enable;
71 uint32_t instancing_step_rate;
72 };
73
74 /**
75 * VF parameters.
76 */
77 struct ilo_state_vf_params_info {
78 enum gen_3dprim_type cv_topology;
79
80 /* prepend an attribute of zeros */
81 bool prepend_zeros;
82
83 /* prepend an attribute of VertexID and/or InstanceID */
84 bool prepend_vertexid;
85 bool prepend_instanceid;
86
87 bool last_element_edge_flag;
88
89 enum gen_index_format cv_index_format;
90 bool cut_index_enable;
91 uint32_t cut_index;
92 };
93
94 /**
95 * Vertex fetch.
96 */
97 struct ilo_state_vf_info {
98 void *data;
99 size_t data_size;
100
101 const struct ilo_state_vf_element_info *elements;
102 uint8_t element_count;
103
104 struct ilo_state_vf_params_info params;
105 };
106
107 struct ilo_state_vf {
108 uint32_t (*user_ve)[2];
109 uint32_t (*user_instancing)[2];
110 int8_t vb_to_first_elem[ILO_STATE_VF_MAX_BUFFER_COUNT];
111 uint8_t user_ve_count;
112
113 bool edge_flag_supported;
114 uint32_t last_user_ve[2][2];
115
116 /* two VEs are reserved for internal use */
117 uint32_t internal_ve[2][2];
118 uint8_t internal_ve_count;
119
120 uint32_t sgvs[1];
121
122 uint32_t cut[2];
123 };
124
125 struct ilo_state_vf_delta {
126 uint32_t dirty;
127 };
128
129 struct ilo_vma;
130
131 struct ilo_state_vertex_buffer_info {
132 const struct ilo_vma *vma;
133 uint32_t offset;
134 uint32_t size;
135
136 uint16_t stride;
137
138 /* doubles must be at 64-bit aligned addresses */
139 bool cv_has_double;
140 uint8_t cv_double_vertex_offset_mod_8;
141 };
142
143 struct ilo_state_vertex_buffer {
144 uint32_t vb[3];
145
146 const struct ilo_vma *vma;
147 };
148
149 struct ilo_state_index_buffer_info {
150 const struct ilo_vma *vma;
151 uint32_t offset;
152 uint32_t size;
153
154 enum gen_index_format format;
155 };
156
157 struct ilo_state_index_buffer {
158 uint32_t ib[3];
159
160 const struct ilo_vma *vma;
161 };
162
163 static inline size_t
ilo_state_vf_data_size(const struct ilo_dev * dev,uint8_t element_count)164 ilo_state_vf_data_size(const struct ilo_dev *dev, uint8_t element_count)
165 {
166 const struct ilo_state_vf *vf = NULL;
167 return (sizeof(vf->user_ve[0]) +
168 sizeof(vf->user_instancing[0])) * element_count;
169 }
170
171 bool
172 ilo_state_vf_valid_element_format(const struct ilo_dev *dev,
173 enum gen_surface_format format);
174
175 bool
176 ilo_state_vf_init(struct ilo_state_vf *vf,
177 const struct ilo_dev *dev,
178 const struct ilo_state_vf_info *info);
179
180 bool
181 ilo_state_vf_init_for_rectlist(struct ilo_state_vf *vf,
182 const struct ilo_dev *dev,
183 void *data, size_t data_size,
184 const struct ilo_state_vf_element_info *elements,
185 uint8_t element_count);
186
187 bool
188 ilo_state_vf_set_params(struct ilo_state_vf *vf,
189 const struct ilo_dev *dev,
190 const struct ilo_state_vf_params_info *params);
191
192 /**
193 * Return the number of attributes in the VUE.
194 */
195 static inline uint8_t
ilo_state_vf_get_attr_count(const struct ilo_state_vf * vf)196 ilo_state_vf_get_attr_count(const struct ilo_state_vf *vf)
197 {
198 return vf->internal_ve_count + vf->user_ve_count;
199 }
200
201 void
202 ilo_state_vf_full_delta(const struct ilo_state_vf *vf,
203 const struct ilo_dev *dev,
204 struct ilo_state_vf_delta *delta);
205
206 void
207 ilo_state_vf_get_delta(const struct ilo_state_vf *vf,
208 const struct ilo_dev *dev,
209 const struct ilo_state_vf *old,
210 struct ilo_state_vf_delta *delta);
211
212 uint32_t
213 ilo_state_vertex_buffer_size(const struct ilo_dev *dev, uint32_t size,
214 uint32_t *alignment);
215
216 bool
217 ilo_state_vertex_buffer_set_info(struct ilo_state_vertex_buffer *vb,
218 const struct ilo_dev *dev,
219 const struct ilo_state_vertex_buffer_info *info);
220
221 uint32_t
222 ilo_state_index_buffer_size(const struct ilo_dev *dev, uint32_t size,
223 uint32_t *alignment);
224
225 bool
226 ilo_state_index_buffer_set_info(struct ilo_state_index_buffer *ib,
227 const struct ilo_dev *dev,
228 const struct ilo_state_index_buffer_info *info);
229
230 #endif /* ILO_STATE_VF_H */
231