1/*
2 * Copyright (c) 2011-2013 Luc Verhaegen <libv@skynet.be>
3 * Copyright (c) 2018-2019 Lima Project
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sub license,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the
13 * next paragraph) shall be included in all copies or substantial portions
14 * 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 NON-INFRINGEMENT. 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 */
25
26#include <stdint.h>
27#include <stdlib.h>
28
29#include "util/format/u_format.h"
30#include <util/macros.h>
31
32#include "lima_format.h"
33
34#define LIMA_TEXEL_FORMAT_L8           0x09
35#define LIMA_TEXEL_FORMAT_A8           0x0a
36#define LIMA_TEXEL_FORMAT_I8           0x0b
37#define LIMA_TEXEL_FORMAT_BGR_565      0x0e
38#define LIMA_TEXEL_FORMAT_BGRA_5551    0x0f
39#define LIMA_TEXEL_FORMAT_BGRA_4444    0x10
40#define LIMA_TEXEL_FORMAT_L8A8         0x11
41#define LIMA_TEXEL_FORMAT_L16          0x12
42#define LIMA_TEXEL_FORMAT_A16          0x13
43#define LIMA_TEXEL_FORMAT_I16          0x14
44#define LIMA_TEXEL_FORMAT_RGB_888      0x15
45#define LIMA_TEXEL_FORMAT_RGBA_8888    0x16
46#define LIMA_TEXEL_FORMAT_RGBX_8888    0x17
47#define LIMA_TEXEL_FORMAT_ETC1_RGB8    0x20
48#define LIMA_TEXEL_FORMAT_L16_FLOAT    0x22
49#define LIMA_TEXEL_FORMAT_A16_FLOAT    0x23
50#define LIMA_TEXEL_FORMAT_I16_FLOAT    0x24
51#define LIMA_TEXEL_FORMAT_L16A16_FLOAT 0x25
52#define LIMA_TEXEL_FORMAT_R16G16B16A16_FLOAT 0x26
53#define LIMA_TEXEL_FORMAT_R16G16B16_FLOAT 0x2f
54#define LIMA_TEXEL_FORMAT_Z24X8        0x2c
55/* This format is only used for depth/stencil reload */
56#define LIMA_TEXEL_FORMAT_Z24S8_RLD    0x32
57
58#define LIMA_PIXEL_FORMAT_B5G6R5       0x00
59#define LIMA_PIXEL_FORMAT_B5G5R5A1     0x01
60#define LIMA_PIXEL_FORMAT_B4G4R4A4     0x02
61#define LIMA_PIXEL_FORMAT_B8G8R8A8     0x03
62#define LIMA_PIXEL_FORMAT_B8           0x04
63#define LIMA_PIXEL_FORMAT_G8B8         0x05
64#define LIMA_PIXEL_FORMAT_B16G16R16A16_FLOAT 0x06
65#define LIMA_PIXEL_FORMAT_B16_FLOAT    0x07
66#define LIMA_PIXEL_FORMAT_G16B16_FLOAT 0x08
67#define LIMA_PIXEL_FORMAT_Z16          0x0e
68#define LIMA_PIXEL_FORMAT_Z24S8        0x0f
69
70struct lima_format {
71   bool present;
72   int format;
73   bool swap_r_b;
74   union {
75      uint32_t channel_layout;
76      uint8_t swizzle[4];
77   };
78};
79
80#define SWIZ(x,y,z,w) {    \
81        PIPE_SWIZZLE_##x,  \
82        PIPE_SWIZZLE_##y,  \
83        PIPE_SWIZZLE_##z,  \
84        PIPE_SWIZZLE_##w   \
85}
86
87#define LIMA_TEXEL_FORMAT(pipe, tex, swap, swiz)            \
88   [PIPE_FORMAT_##pipe] = {                                 \
89      .present = true, .format = LIMA_TEXEL_FORMAT_##tex,   \
90      .swap_r_b = swap, .swizzle = swiz                     \
91   }
92
93#define LIMA_PIXEL_FORMAT(pipe, pix, swap, ch_layout)       \
94   [PIPE_FORMAT_##pipe] = {                                 \
95      .present = true, .format = LIMA_PIXEL_FORMAT_##pix,   \
96      .swap_r_b = swap, .channel_layout = ch_layout         \
97   }
98
99static const struct lima_format lima_texel_formats[] = {
100   LIMA_TEXEL_FORMAT(R8G8B8A8_UNORM,     RGBA_8888, true,  SWIZ(X, Y, Z, W)),
101   LIMA_TEXEL_FORMAT(B8G8R8A8_UNORM,     RGBA_8888, false, SWIZ(X, Y, Z, W)),
102   LIMA_TEXEL_FORMAT(R8G8B8A8_SRGB,      RGBA_8888, true,  SWIZ(X, Y, Z, W)),
103   LIMA_TEXEL_FORMAT(B8G8R8A8_SRGB,      RGBA_8888, false, SWIZ(X, Y, Z, W)),
104   LIMA_TEXEL_FORMAT(R8G8B8X8_UNORM,     RGBX_8888, true,  SWIZ(X, Y, Z, W)),
105   LIMA_TEXEL_FORMAT(B8G8R8X8_UNORM,     RGBX_8888, false, SWIZ(X, Y, Z, W)),
106   LIMA_TEXEL_FORMAT(B5G6R5_UNORM,       BGR_565,   false, SWIZ(X, Y, Z, W)),
107   LIMA_TEXEL_FORMAT(B5G5R5A1_UNORM,     BGRA_5551, false, SWIZ(X, Y, Z, W)),
108   LIMA_TEXEL_FORMAT(B4G4R4A4_UNORM,     BGRA_4444, false, SWIZ(X, Y, Z, W)),
109   LIMA_TEXEL_FORMAT(Z24_UNORM_S8_UINT,  Z24X8,     false, SWIZ(X, Y, Z, W)),
110   LIMA_TEXEL_FORMAT(Z24X8_UNORM,        Z24X8,     false, SWIZ(X, Y, Z, W)),
111   LIMA_TEXEL_FORMAT(Z16_UNORM,          L16,       false, SWIZ(X, Y, Z, W)),
112   LIMA_TEXEL_FORMAT(L16_UNORM,          L16,       false, SWIZ(X, Y, Z, W)),
113   LIMA_TEXEL_FORMAT(L8_UNORM,           L8,        false, SWIZ(X, Y, Z, W)),
114   LIMA_TEXEL_FORMAT(A16_UNORM,          A16,       false, SWIZ(X, Y, Z, W)),
115   LIMA_TEXEL_FORMAT(A8_UNORM,           A8,        false, SWIZ(X, Y, Z, W)),
116   LIMA_TEXEL_FORMAT(I16_UNORM,          I16,       false, SWIZ(X, Y, Z, W)),
117   LIMA_TEXEL_FORMAT(I8_UNORM,           I8,        false, SWIZ(X, Y, Z, W)),
118   LIMA_TEXEL_FORMAT(L8A8_UNORM,         L8A8,      false, SWIZ(X, Y, Z, W)),
119   LIMA_TEXEL_FORMAT(ETC1_RGB8,          ETC1_RGB8, false, SWIZ(X, Y, Z, W)),
120   LIMA_TEXEL_FORMAT(R8_UNORM,           L8,        false, SWIZ(X, 0, 0, 1)),
121   LIMA_TEXEL_FORMAT(R8G8_UNORM,         L8A8,      false, SWIZ(X, W, 0, 1)),
122   LIMA_TEXEL_FORMAT(R16G16B16_FLOAT,    R16G16B16_FLOAT, true, SWIZ(X, Y, Z, W)),
123   LIMA_TEXEL_FORMAT(R16G16B16A16_FLOAT, R16G16B16A16_FLOAT, true, SWIZ(X, Y, Z, W)),
124   LIMA_TEXEL_FORMAT(L16_FLOAT,          L16_FLOAT, false, SWIZ(X, Y, Z, W)),
125   LIMA_TEXEL_FORMAT(A16_FLOAT,          A16_FLOAT, false, SWIZ(X, Y, Z, W)),
126   LIMA_TEXEL_FORMAT(I16_FLOAT,          I16_FLOAT, false, SWIZ(X, Y, Z, W)),
127   LIMA_TEXEL_FORMAT(L16A16_FLOAT,       L16A16_FLOAT, false, SWIZ(X, Y, Z, W)),
128};
129
130static const struct lima_format lima_pixel_formats[] = {
131   LIMA_PIXEL_FORMAT(R8G8B8A8_UNORM,     B8G8R8A8, true,  0x8888),
132   LIMA_PIXEL_FORMAT(B8G8R8A8_UNORM,     B8G8R8A8, false, 0x8888),
133   LIMA_PIXEL_FORMAT(R8G8B8A8_SRGB,      B8G8R8A8, true,  0x8888),
134   LIMA_PIXEL_FORMAT(B8G8R8A8_SRGB,      B8G8R8A8, false, 0x8888),
135   LIMA_PIXEL_FORMAT(R8G8B8X8_UNORM,     B8G8R8A8, true,  0x8888),
136   LIMA_PIXEL_FORMAT(B8G8R8X8_UNORM,     B8G8R8A8, false, 0x8888),
137   LIMA_PIXEL_FORMAT(B5G6R5_UNORM,       B5G6R5,   false, 0x8565),
138   LIMA_PIXEL_FORMAT(B5G5R5A1_UNORM,     B5G5R5A1, false, 0x8565),
139   LIMA_PIXEL_FORMAT(B4G4R4A4_UNORM,     B4G4R4A4, false, 0x8444),
140   LIMA_PIXEL_FORMAT(R8_UNORM,           B8,       true,  0x8888),
141   LIMA_PIXEL_FORMAT(R8G8_UNORM,         G8B8,     true,  0x8888),
142   LIMA_PIXEL_FORMAT(Z16_UNORM,          Z16,      false, 0x0000),
143   LIMA_PIXEL_FORMAT(Z24_UNORM_S8_UINT,  Z24S8,    false, 0x0000),
144   LIMA_PIXEL_FORMAT(Z24X8_UNORM,        Z24S8,    false, 0x0000),
145   LIMA_PIXEL_FORMAT(R16G16B16A16_FLOAT, B16G16R16A16_FLOAT, true, 0x0000),
146   LIMA_PIXEL_FORMAT(R16_FLOAT,          B16_FLOAT, true, 0x0000),
147   LIMA_PIXEL_FORMAT(R16G16_FLOAT,       G16B16_FLOAT, true, 0x0000),
148};
149
150static const struct lima_format *
151get_texel_format(enum pipe_format f)
152{
153   if (f >= ARRAY_SIZE(lima_texel_formats) ||
154       !lima_texel_formats[f].present)
155      return NULL;
156
157   return lima_texel_formats + f;
158}
159
160static const struct lima_format *
161get_pixel_format(enum pipe_format f)
162{
163   if (f >= ARRAY_SIZE(lima_pixel_formats) ||
164       !lima_pixel_formats[f].present)
165      return NULL;
166
167   return lima_pixel_formats + f;
168}
169
170bool
171lima_format_texel_supported(enum pipe_format f)
172{
173   const struct lima_format *lf = get_texel_format(f);
174
175   if (!lf)
176      return false;
177
178   return true;
179}
180
181bool
182lima_format_pixel_supported(enum pipe_format f)
183{
184   const struct lima_format *lf = get_pixel_format(f);
185
186   if (!lf)
187      return false;
188
189   return true;
190}
191
192int
193lima_format_get_texel(enum pipe_format f)
194{
195   return lima_texel_formats[f].format;
196}
197
198int
199lima_format_get_texel_reload(enum pipe_format f)
200{
201   switch (f) {
202   case PIPE_FORMAT_Z24_UNORM_S8_UINT:
203   case PIPE_FORMAT_Z24X8_UNORM:
204      return LIMA_TEXEL_FORMAT_Z24S8_RLD;
205   default:
206      return lima_format_get_texel(f);
207   }
208}
209
210int
211lima_format_get_pixel(enum pipe_format f)
212{
213   return lima_pixel_formats[f].format;
214}
215
216bool
217lima_format_get_texel_swap_rb(enum pipe_format f)
218{
219   return lima_texel_formats[f].swap_r_b;
220}
221
222bool
223lima_format_get_pixel_swap_rb(enum pipe_format f)
224{
225   return lima_pixel_formats[f].swap_r_b;
226}
227
228const uint8_t *
229lima_format_get_texel_swizzle(enum pipe_format f)
230{
231   return lima_texel_formats[f].swizzle;
232}
233
234uint32_t
235lima_format_get_channel_layout(enum pipe_format f)
236{
237   return lima_pixel_formats[f].channel_layout;
238}
239