1 /*
2 * Copyright © 2014-2017 Broadcom
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, sublicense,
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 next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * 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 NONINFRINGEMENT. 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 DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24 /**
25 * @file v3d_formats.c
26 *
27 * Contains the table and accessors for V3D texture and render target format
28 * support.
29 *
30 * The hardware has limited support for texture formats, and extremely limited
31 * support for render target formats. As a result, we emulate other formats
32 * in our shader code, and this stores the table for doing so.
33 */
34
35 #include "util/macros.h"
36
37 #include "v3d_context.h"
38 #include "v3d_format_table.h"
39
40 /* The format internal types are the same across V3D versions */
41 #define V3D_VERSION 33
42 #include "broadcom/cle/v3dx_pack.h"
43
44 static const struct v3d_format *
get_format(const struct v3d_device_info * devinfo,enum pipe_format f)45 get_format(const struct v3d_device_info *devinfo, enum pipe_format f)
46 {
47 if (devinfo->ver >= 41)
48 return v3d41_get_format_desc(f);
49 else
50 return v3d33_get_format_desc(f);
51 }
52
53 bool
v3d_rt_format_supported(const struct v3d_device_info * devinfo,enum pipe_format f)54 v3d_rt_format_supported(const struct v3d_device_info *devinfo,
55 enum pipe_format f)
56 {
57 const struct v3d_format *vf = get_format(devinfo, f);
58
59 if (!vf)
60 return false;
61
62 return vf->rt_type != V3D_OUTPUT_IMAGE_FORMAT_NO;
63 }
64
65 uint8_t
v3d_get_rt_format(const struct v3d_device_info * devinfo,enum pipe_format f)66 v3d_get_rt_format(const struct v3d_device_info *devinfo, enum pipe_format f)
67 {
68 const struct v3d_format *vf = get_format(devinfo, f);
69
70 if (!vf)
71 return 0;
72
73 return vf->rt_type;
74 }
75
76 bool
v3d_tex_format_supported(const struct v3d_device_info * devinfo,enum pipe_format f)77 v3d_tex_format_supported(const struct v3d_device_info *devinfo,
78 enum pipe_format f)
79 {
80 const struct v3d_format *vf = get_format(devinfo, f);
81
82 return vf != NULL;
83 }
84
85 uint8_t
v3d_get_tex_format(const struct v3d_device_info * devinfo,enum pipe_format f)86 v3d_get_tex_format(const struct v3d_device_info *devinfo, enum pipe_format f)
87 {
88 const struct v3d_format *vf = get_format(devinfo, f);
89
90 if (!vf)
91 return 0;
92
93 return vf->tex_type;
94 }
95
96 uint8_t
v3d_get_tex_return_size(const struct v3d_device_info * devinfo,enum pipe_format f,enum pipe_tex_compare compare)97 v3d_get_tex_return_size(const struct v3d_device_info *devinfo,
98 enum pipe_format f, enum pipe_tex_compare compare)
99 {
100 const struct v3d_format *vf = get_format(devinfo, f);
101
102 if (!vf)
103 return 0;
104
105 if (unlikely(V3D_DEBUG & V3D_DEBUG_TMU_16BIT))
106 return 16;
107
108 if (unlikely(V3D_DEBUG & V3D_DEBUG_TMU_32BIT))
109 return 32;
110
111 if (compare == PIPE_TEX_COMPARE_R_TO_TEXTURE)
112 return 16;
113
114 return vf->return_size;
115 }
116
117 uint8_t
v3d_get_tex_return_channels(const struct v3d_device_info * devinfo,enum pipe_format f)118 v3d_get_tex_return_channels(const struct v3d_device_info *devinfo,
119 enum pipe_format f)
120 {
121 const struct v3d_format *vf = get_format(devinfo, f);
122
123 if (!vf)
124 return 0;
125
126 return vf->return_channels;
127 }
128
129 const uint8_t *
v3d_get_format_swizzle(const struct v3d_device_info * devinfo,enum pipe_format f)130 v3d_get_format_swizzle(const struct v3d_device_info *devinfo, enum pipe_format f)
131 {
132 const struct v3d_format *vf = get_format(devinfo, f);
133 static const uint8_t fallback[] = {0, 1, 2, 3};
134
135 if (!vf)
136 return fallback;
137
138 return vf->swizzle;
139 }
140
141 void
v3d_get_internal_type_bpp_for_output_format(const struct v3d_device_info * devinfo,uint32_t format,uint32_t * type,uint32_t * bpp)142 v3d_get_internal_type_bpp_for_output_format(const struct v3d_device_info *devinfo,
143 uint32_t format,
144 uint32_t *type,
145 uint32_t *bpp)
146 {
147 if (devinfo->ver >= 41) {
148 return v3d41_get_internal_type_bpp_for_output_format(format,
149 type, bpp);
150 } else {
151 return v3d33_get_internal_type_bpp_for_output_format(format,
152 type, bpp);
153 }
154 }
155
156 bool
v3d_tfu_supports_tex_format(const struct v3d_device_info * devinfo,uint32_t tex_format,bool for_mipmap)157 v3d_tfu_supports_tex_format(const struct v3d_device_info *devinfo,
158 uint32_t tex_format,
159 bool for_mipmap)
160 {
161 if (devinfo->ver >= 41) {
162 return v3d41_tfu_supports_tex_format(tex_format, for_mipmap);
163 } else {
164 return v3d33_tfu_supports_tex_format(tex_format, for_mipmap);
165 }
166 }
167
168 bool
v3d_format_supports_tlb_msaa_resolve(const struct v3d_device_info * devinfo,enum pipe_format f)169 v3d_format_supports_tlb_msaa_resolve(const struct v3d_device_info *devinfo,
170 enum pipe_format f)
171 {
172 uint32_t internal_type;
173 uint32_t internal_bpp;
174
175 const struct v3d_format *vf = get_format(devinfo, f);
176
177 if (!vf)
178 return false;
179
180 v3d_get_internal_type_bpp_for_output_format(devinfo,
181 vf->rt_type,
182 &internal_type,
183 &internal_bpp);
184
185 return internal_type == V3D_INTERNAL_TYPE_8 ||
186 internal_type == V3D_INTERNAL_TYPE_16F;
187 }
188