1 /*
2 * Copyright (c) 2018-2019 Lima Project
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sub license,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the
12 * next paragraph) shall be included in all copies or substantial portions
13 * of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 */
24
25 #ifndef H_LIMA_TEXTURE
26 #define H_LIMA_TEXTURE
27
28 #define lima_min_tex_desc_size 64
29
30 #define LIMA_TEXTURE_TYPE_2D 2
31 #define LIMA_TEXTURE_TYPE_CUBE 5
32
33 typedef struct __attribute__((__packed__)) {
34 /* Word 0 */
35 uint32_t format : 6;
36 uint32_t flag1: 1;
37 uint32_t swap_r_b: 1;
38 uint32_t unknown_0_1: 8;
39 uint32_t stride: 15;
40 uint32_t unknown_0_2: 1;
41
42 /* Word 1-3 */
43 uint32_t unknown_1_1: 7;
44 uint32_t unnorm_coords: 1;
45 uint32_t unknown_1_2: 1;
46 uint32_t texture_type: 3;
47 uint32_t min_lod: 8; /* Fixed point, 4.4, unsigned */
48 uint32_t max_lod: 8; /* Fixed point, 4.4, unsigned */
49 uint32_t lod_bias: 9; /* Fixed point, signed, 1.4.4 */
50 uint32_t unknown_2_1: 3;
51 uint32_t has_stride: 1;
52 uint32_t min_mipfilter_2: 2; /* 0x3 for linear, 0x0 for nearest */
53 uint32_t min_img_filter_nearest: 1;
54 uint32_t mag_img_filter_nearest: 1;
55 uint32_t wrap_s_clamp_to_edge: 1;
56 uint32_t wrap_s_clamp: 1;
57 uint32_t wrap_s_mirror_repeat: 1;
58 uint32_t wrap_t_clamp_to_edge: 1;
59 uint32_t wrap_t_clamp: 1;
60 uint32_t wrap_t_mirror_repeat: 1;
61 uint32_t unknown_2_2: 3;
62 uint32_t width: 13;
63 uint32_t height: 13;
64 uint32_t unknown_3_1: 1;
65 uint32_t unknown_3_2: 15;
66
67 /* Word 4 */
68 uint32_t unknown_4;
69
70 /* Word 5 */
71 uint32_t unknown_5;
72
73 /* Word 6-15 */
74 /* layout is in va[0] bit 13-14 */
75 /* VAs start in va[0] at bit 30, each VA is 26 bits (only MSBs are stored), stored
76 * linearly in memory */
77 union {
78 uint32_t va[0];
79 struct __attribute__((__packed__)) {
80 uint32_t unknown_6_1: 13;
81 uint32_t layout: 2;
82 uint32_t unknown_6_2: 9;
83 uint32_t unknown_6_3: 6;
84 #define VA_BIT_OFFSET 30
85 #define VA_BIT_SIZE 26
86 uint32_t va_0: VA_BIT_SIZE;
87 uint32_t va_0_1: 8;
88 uint32_t va_1_x[0];
89 } va_s;
90 };
91 } lima_tex_desc;
92
93 void lima_texture_desc_set_res(struct lima_context *ctx, lima_tex_desc *desc,
94 struct pipe_resource *prsc,
95 unsigned first_level, unsigned last_level,
96 unsigned first_layer);
97 void lima_update_textures(struct lima_context *ctx);
98
99
lima_float_to_fixed8(float f)100 static inline int16_t lima_float_to_fixed8(float f)
101 {
102 return (int)(f * 16.0);
103 }
104
lima_fixed8_to_float(int16_t i)105 static inline float lima_fixed8_to_float(int16_t i)
106 {
107 float sign = 1.0;
108
109 if (i > 0xff) {
110 i = 0x200 - i;
111 sign = -1;
112 }
113
114 return sign * (float)(i / 16.0);
115 }
116
117 #endif
118