2 * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
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:
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
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 FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 * Rob Clark <robclark@freedesktop.org>
27 #include "pipe/p_defines.h"
28 #include "util/format/u_format.h"
32 static enum a2xx_sq_surfaceformat
33 pipe2surface(enum pipe_format format
, struct surface_format
*fmt
)
35 const struct util_format_description
*desc
= util_format_description(format
);
37 if (desc
->layout
!= UTIL_FORMAT_LAYOUT_PLAIN
) {
39 /* Compressed textures. */
40 case PIPE_FORMAT_ETC1_RGB8
:
42 case PIPE_FORMAT_DXT1_RGB
:
43 case PIPE_FORMAT_DXT1_RGBA
:
45 case PIPE_FORMAT_DXT3_RGBA
:
47 case PIPE_FORMAT_DXT5_RGBA
:
49 case PIPE_FORMAT_ATC_RGB
:
50 return FMT_ATI_TC_555_565_RGB
;
51 case PIPE_FORMAT_ATC_RGBA_EXPLICIT
:
52 return FMT_ATI_TC_555_565_RGBA
;
53 case PIPE_FORMAT_ATC_RGBA_INTERPOLATED
:
54 return FMT_ATI_TC_555_565_RGBA_INTERP
;
56 case PIPE_FORMAT_UYVY
:
57 return FMT_Y1_Cr_Y0_Cb
;
58 case PIPE_FORMAT_YUYV
:
59 return FMT_Cr_Y1_Cb_Y0
;
65 uint32_t channel_size
= 0;
66 for (unsigned i
= 0; i
< 4; i
++)
67 channel_size
|= desc
->channel
[i
].size
<< i
*8;
69 unsigned i
= util_format_get_first_non_void_channel(format
);
70 if (desc
->channel
[i
].type
== UTIL_FORMAT_TYPE_SIGNED
||
71 desc
->channel
[i
].type
== UTIL_FORMAT_TYPE_FIXED
)
72 fmt
->sign
= SQ_TEX_SIGN_SIGNED
;
73 if (!desc
->channel
[i
].normalized
)
74 fmt
->num_format
= SQ_TEX_NUM_FORMAT_INT
;
75 if (desc
->channel
[i
].type
== UTIL_FORMAT_TYPE_FIXED
)
76 fmt
->exp_adjust
= -16;
78 /* Note: the 3 channel 24bpp/48bpp/96bpp formats are only for vertex fetch
79 * we can use the 4 channel format and ignore the 4th component just isn't used
80 * XXX: is it possible for the extra loaded component to cause a MMU fault?
83 #define CASE(r, g, b, a) case (r | g << 8 | b << 16 | a << 24)
84 if (desc
->channel
[0].type
== UTIL_FORMAT_TYPE_FLOAT
) {
85 switch (channel_size
) {
86 CASE(16, 0, 0, 0): return FMT_16_FLOAT
;
87 CASE(16, 16, 0, 0): return FMT_16_16_FLOAT
;
88 CASE(16, 16, 16, 0): return FMT_16_16_16_16_FLOAT
; /* Note: only for vertex */
89 CASE(16, 16, 16, 16): return FMT_16_16_16_16_FLOAT
;
90 CASE(32, 0, 0, 0): return FMT_32_FLOAT
;
91 CASE(32, 32, 0, 0): return FMT_32_32_FLOAT
;
92 CASE(32, 32, 32, 0): return FMT_32_32_32_FLOAT
;
93 CASE(32, 32, 32, 32): return FMT_32_32_32_32_FLOAT
;
96 switch (channel_size
) {
97 CASE( 8, 0, 0, 0): return FMT_8
;
98 CASE( 8, 8, 0, 0): return FMT_8_8
;
99 CASE( 8, 8, 8, 0): return FMT_8_8_8_8
; /* Note: only for vertex */
100 CASE( 8, 8, 8, 8): return FMT_8_8_8_8
;
101 CASE(16, 0, 0, 0): return FMT_16
;
102 CASE(16, 16, 0, 0): return FMT_16_16
;
103 CASE(16, 16, 16, 0): return FMT_16_16_16_16
; /* Note: only for vertex */
104 CASE(16, 16, 16, 16): return FMT_16_16_16_16
;
105 CASE(32, 0, 0, 0): return FMT_32
;
106 CASE(32, 32, 0, 0): return FMT_32_32
;
107 CASE(32, 32, 32, 0): return FMT_32_32_32_32
; /* Note: only for vertex */
108 CASE(32, 32, 32, 32): return FMT_32_32_32_32
;
109 CASE( 4, 4, 4, 4): return FMT_4_4_4_4
;
110 CASE( 5, 5, 5, 1): return FMT_1_5_5_5
;
111 CASE( 5, 6, 5, 0): return FMT_5_6_5
;
112 CASE(10, 10, 10, 2): return FMT_2_10_10_10
;
113 CASE( 8, 24, 0, 0): return FMT_24_8
;
114 CASE( 2, 3, 3, 0): return FMT_2_3_3
; /* Note: R/B swapped */
122 struct surface_format
123 fd2_pipe2surface(enum pipe_format format
)
125 struct surface_format fmt
= {
126 .sign
= SQ_TEX_SIGN_UNSIGNED
,
127 .num_format
= SQ_TEX_NUM_FORMAT_FRAC
,
130 fmt
.format
= pipe2surface(format
, &fmt
);
134 enum a2xx_colorformatx
135 fd2_pipe2color(enum pipe_format format
)
139 case PIPE_FORMAT_R8_UNORM
:
141 case PIPE_FORMAT_B2G3R3_UNORM
:
142 return COLORX_2_3_3
; /* note: untested */
144 /* 16-bit buffers. */
145 case PIPE_FORMAT_B5G6R5_UNORM
:
147 case PIPE_FORMAT_B5G5R5A1_UNORM
:
148 case PIPE_FORMAT_B5G5R5X1_UNORM
:
149 return COLORX_1_5_5_5
;
150 case PIPE_FORMAT_B4G4R4A4_UNORM
:
151 case PIPE_FORMAT_B4G4R4X4_UNORM
:
152 return COLORX_4_4_4_4
;
153 case PIPE_FORMAT_R8G8_UNORM
:
156 /* 32-bit buffers. */
157 case PIPE_FORMAT_B8G8R8A8_UNORM
:
158 case PIPE_FORMAT_B8G8R8X8_UNORM
:
159 case PIPE_FORMAT_R8G8B8A8_UNORM
:
160 case PIPE_FORMAT_R8G8B8X8_UNORM
:
161 return COLORX_8_8_8_8
;
162 /* Note: snorm untested */
163 case PIPE_FORMAT_R8G8B8A8_SNORM
:
164 case PIPE_FORMAT_R8G8B8X8_SNORM
:
165 return COLORX_S8_8_8_8
;
168 case PIPE_FORMAT_R16_FLOAT
:
169 return COLORX_16_FLOAT
;
170 case PIPE_FORMAT_R16G16_FLOAT
:
171 return COLORX_16_16_FLOAT
;
172 case PIPE_FORMAT_R16G16B16A16_FLOAT
:
173 return COLORX_16_16_16_16_FLOAT
;
174 case PIPE_FORMAT_R32_FLOAT
:
175 return COLORX_32_FLOAT
;
176 case PIPE_FORMAT_R32G32_FLOAT
:
177 return COLORX_32_32_FLOAT
;
178 case PIPE_FORMAT_R32G32B32A32_FLOAT
:
179 return COLORX_32_32_32_32_FLOAT
;
186 static inline enum sq_tex_swiz
187 tex_swiz(unsigned swiz
)
191 case PIPE_SWIZZLE_X
: return SQ_TEX_X
;
192 case PIPE_SWIZZLE_Y
: return SQ_TEX_Y
;
193 case PIPE_SWIZZLE_Z
: return SQ_TEX_Z
;
194 case PIPE_SWIZZLE_W
: return SQ_TEX_W
;
195 case PIPE_SWIZZLE_0
: return SQ_TEX_ZERO
;
196 case PIPE_SWIZZLE_1
: return SQ_TEX_ONE
;
201 fd2_tex_swiz(enum pipe_format format
, unsigned swizzle_r
, unsigned swizzle_g
,
202 unsigned swizzle_b
, unsigned swizzle_a
)
204 const struct util_format_description
*desc
=
205 util_format_description(format
);
206 unsigned char swiz
[4] = {
207 swizzle_r
, swizzle_g
, swizzle_b
, swizzle_a
,
210 util_format_compose_swizzles(desc
->swizzle
, swiz
, rswiz
);
212 return A2XX_SQ_TEX_3_SWIZ_X(tex_swiz(rswiz
[0])) |
213 A2XX_SQ_TEX_3_SWIZ_Y(tex_swiz(rswiz
[1])) |
214 A2XX_SQ_TEX_3_SWIZ_Z(tex_swiz(rswiz
[2])) |
215 A2XX_SQ_TEX_3_SWIZ_W(tex_swiz(rswiz
[3]));
219 fd2_vtx_swiz(enum pipe_format format
, unsigned swizzle
)
221 const struct util_format_description
*desc
=
222 util_format_description(format
);
223 unsigned char swiz
[4], rswiz
[4];
225 for (unsigned i
= 0; i
< 4; i
++)
226 swiz
[i
] = (swizzle
>> i
* 3) & 7;
228 util_format_compose_swizzles(desc
->swizzle
, swiz
, rswiz
);
230 return rswiz
[0] | rswiz
[1] << 3 | rswiz
[2] << 6 | rswiz
[3] << 9;