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1 /**********************************************************
2  * Copyright 2007-2009 VMware, Inc.  All rights reserved.
3  *
4  * Permission is hereby granted, free of charge, to any person
5  * obtaining a copy of this software and associated documentation
6  * files (the "Software"), to deal in the Software without
7  * restriction, including without limitation the rights to use, copy,
8  * modify, merge, publish, distribute, sublicense, and/or sell copies
9  * of the Software, and to permit persons to whom the Software is
10  * furnished to do so, subject to the following conditions:
11  *
12  * The above copyright notice and this permission notice shall be
13  * included in all copies or substantial portions of the Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22  * SOFTWARE.
23  *
24  **********************************************************/
25 
26 /**
27  * @file
28  * SVGA Shader Token Definitions
29  *
30  * @author Michal Krol <michal@vmware.com>
31  */
32 
33 #ifndef ST_SHADER_SVGA_H
34 #define ST_SHADER_SVGA_H
35 
36 #include "pipe/p_compiler.h"
37 
38 struct sh_op
39 {
40    unsigned opcode:16;
41    unsigned control:8;
42    unsigned length:4;
43    unsigned predicated:1;
44    unsigned unused:1;
45    unsigned coissue:1;
46    unsigned is_reg:1;
47 };
48 
49 struct sh_reg
50 {
51    unsigned number:11;
52    unsigned type_hi:2;
53    unsigned relative:1;
54    unsigned unused:14;
55    unsigned type_lo:3;
56    unsigned is_reg:1;
57 };
58 
59 static inline unsigned
sh_reg_type(struct sh_reg reg)60 sh_reg_type( struct sh_reg reg )
61 {
62    return reg.type_lo | (reg.type_hi << 3);
63 }
64 
65 struct sh_cdata
66 {
67    float xyzw[4];
68 };
69 
70 struct sh_def
71 {
72    struct sh_op op;
73    struct sh_reg reg;
74    struct sh_cdata cdata;
75 };
76 
77 struct sh_defb
78 {
79    struct sh_op op;
80    struct sh_reg reg;
81    uint data;
82 };
83 
84 struct sh_idata
85 {
86    int xyzw[4];
87 };
88 
89 struct sh_defi
90 {
91    struct sh_op op;
92    struct sh_reg reg;
93    struct sh_idata idata;
94 };
95 
96 #define PS_TEXTURETYPE_UNKNOWN   SVGA3DSAMP_UNKNOWN
97 #define PS_TEXTURETYPE_2D        SVGA3DSAMP_2D
98 #define PS_TEXTURETYPE_CUBE      SVGA3DSAMP_CUBE
99 #define PS_TEXTURETYPE_VOLUME    SVGA3DSAMP_VOLUME
100 
101 struct sh_sampleinfo
102 {
103    unsigned unused:27;
104    unsigned texture_type:4;
105    unsigned is_reg:1;
106 };
107 
108 struct sh_semantic
109 {
110    unsigned usage:4;
111    unsigned unused1:12;
112    unsigned usage_index:4;
113    unsigned unused2:11;
114    unsigned is_reg:1;
115 };
116 
117 #define SH_WRITEMASK_0              0x1
118 #define SH_WRITEMASK_1              0x2
119 #define SH_WRITEMASK_2              0x4
120 #define SH_WRITEMASK_3              0x8
121 #define SH_WRITEMASK_ALL            0xf
122 
123 #define SH_DSTMOD_NONE              0x0
124 #define SH_DSTMOD_SATURATE          0x1
125 #define SH_DSTMOD_PARTIALPRECISION  0x2
126 #define SH_DSTMOD_MSAMPCENTROID     0x4
127 
128 struct sh_dstreg
129 {
130    unsigned number:11;
131    unsigned type_hi:2;
132    unsigned relative:1;
133    unsigned unused:2;
134    unsigned write_mask:4;
135    unsigned modifier:4;
136    unsigned shift_scale:4;
137    unsigned type_lo:3;
138    unsigned is_reg:1;
139 };
140 
141 static inline unsigned
sh_dstreg_type(struct sh_dstreg reg)142 sh_dstreg_type( struct sh_dstreg reg )
143 {
144    return reg.type_lo | (reg.type_hi << 3);
145 }
146 
147 struct sh_dcl
148 {
149    struct sh_op op;
150    union {
151       struct sh_sampleinfo sampleinfo;
152       struct sh_semantic semantic;
153    } u;
154    struct sh_dstreg reg;
155 };
156 
157 struct sh_srcreg
158 {
159    unsigned number:11;
160    unsigned type_hi:2;
161    unsigned relative:1;
162    unsigned unused:2;
163    unsigned swizzle_x:2;
164    unsigned swizzle_y:2;
165    unsigned swizzle_z:2;
166    unsigned swizzle_w:2;
167    unsigned modifier:4;
168    unsigned type_lo:3;
169    unsigned is_reg:1;
170 };
171 
172 static inline unsigned
sh_srcreg_type(struct sh_srcreg reg)173 sh_srcreg_type( struct sh_srcreg reg )
174 {
175    return reg.type_lo | (reg.type_hi << 3);
176 }
177 
178 struct sh_dstop
179 {
180    struct sh_op op;
181    struct sh_dstreg dst;
182 };
183 
184 struct sh_srcop
185 {
186    struct sh_op op;
187    struct sh_srcreg src;
188 };
189 
190 struct sh_src2op
191 {
192    struct sh_op op;
193    struct sh_srcreg src0;
194    struct sh_srcreg src1;
195 };
196 
197 struct sh_unaryop
198 {
199    struct sh_op op;
200    struct sh_dstreg dst;
201    struct sh_srcreg src;
202 };
203 
204 struct sh_binaryop
205 {
206    struct sh_op op;
207    struct sh_dstreg dst;
208    struct sh_srcreg src0;
209    struct sh_srcreg src1;
210 };
211 
212 struct sh_trinaryop
213 {
214    struct sh_op op;
215    struct sh_dstreg dst;
216    struct sh_srcreg src0;
217    struct sh_srcreg src1;
218    struct sh_srcreg src2;
219 };
220 
221 struct sh_comment
222 {
223    unsigned opcode:16;
224    unsigned size:16;
225 };
226 
227 #endif /* ST_SHADER_SVGA_H */
228