1 /*
2 * Mesa 3-D graphics library
3 *
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 1999-2009 VMware, Inc. All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
24 */
25
26
27 #include <stdio.h>
28 #include <assert.h>
29
30 #include "util/glheader.h"
31 #include "prog_instruction.h"
32 #include "prog_parameter.h"
33
34
35 /**
36 * Initialize program instruction fields to defaults.
37 * \param inst first instruction to initialize
38 * \param count number of instructions to initialize
39 */
40 void
_mesa_init_instructions(struct prog_instruction * inst,GLuint count)41 _mesa_init_instructions(struct prog_instruction *inst, GLuint count)
42 {
43 GLuint i;
44
45 memset(inst, 0, count * sizeof(struct prog_instruction));
46
47 for (i = 0; i < count; i++) {
48 inst[i].SrcReg[0].File = PROGRAM_UNDEFINED;
49 inst[i].SrcReg[0].Swizzle = SWIZZLE_NOOP;
50 inst[i].SrcReg[1].File = PROGRAM_UNDEFINED;
51 inst[i].SrcReg[1].Swizzle = SWIZZLE_NOOP;
52 inst[i].SrcReg[2].File = PROGRAM_UNDEFINED;
53 inst[i].SrcReg[2].Swizzle = SWIZZLE_NOOP;
54
55 inst[i].DstReg.File = PROGRAM_UNDEFINED;
56 inst[i].DstReg.WriteMask = WRITEMASK_XYZW;
57
58 inst[i].Saturate = GL_FALSE;
59 }
60 }
61
62
63 /**
64 * Basic info about each instruction
65 */
66 struct instruction_info
67 {
68 enum prog_opcode Opcode;
69 const char *Name;
70 GLuint NumSrcRegs;
71 GLuint NumDstRegs;
72 };
73
74 /**
75 * Instruction info
76 * \note Opcode should equal array index!
77 */
78 static const struct instruction_info InstInfo[MAX_OPCODE] = {
79 { OPCODE_NOP, "NOP", 0, 0 },
80 { OPCODE_ABS, "ABS", 1, 1 },
81 { OPCODE_ADD, "ADD", 2, 1 },
82 { OPCODE_ARL, "ARL", 1, 1 },
83 { OPCODE_CMP, "CMP", 3, 1 },
84 { OPCODE_COS, "COS", 1, 1 },
85 { OPCODE_DDX, "DDX", 1, 1 },
86 { OPCODE_DDY, "DDY", 1, 1 },
87 { OPCODE_DP2, "DP2", 2, 1 },
88 { OPCODE_DP3, "DP3", 2, 1 },
89 { OPCODE_DP4, "DP4", 2, 1 },
90 { OPCODE_DPH, "DPH", 2, 1 },
91 { OPCODE_DST, "DST", 2, 1 },
92 { OPCODE_END, "END", 0, 0 },
93 { OPCODE_EX2, "EX2", 1, 1 },
94 { OPCODE_EXP, "EXP", 1, 1 },
95 { OPCODE_FLR, "FLR", 1, 1 },
96 { OPCODE_FRC, "FRC", 1, 1 },
97 { OPCODE_KIL, "KIL", 1, 0 },
98 { OPCODE_LG2, "LG2", 1, 1 },
99 { OPCODE_LIT, "LIT", 1, 1 },
100 { OPCODE_LOG, "LOG", 1, 1 },
101 { OPCODE_LRP, "LRP", 3, 1 },
102 { OPCODE_MAD, "MAD", 3, 1 },
103 { OPCODE_MAX, "MAX", 2, 1 },
104 { OPCODE_MIN, "MIN", 2, 1 },
105 { OPCODE_MOV, "MOV", 1, 1 },
106 { OPCODE_MUL, "MUL", 2, 1 },
107 { OPCODE_POW, "POW", 2, 1 },
108 { OPCODE_RCP, "RCP", 1, 1 },
109 { OPCODE_RSQ, "RSQ", 1, 1 },
110 { OPCODE_SCS, "SCS", 1, 1 },
111 { OPCODE_SGE, "SGE", 2, 1 },
112 { OPCODE_SIN, "SIN", 1, 1 },
113 { OPCODE_SLT, "SLT", 2, 1 },
114 { OPCODE_SSG, "SSG", 1, 1 },
115 { OPCODE_SUB, "SUB", 2, 1 },
116 { OPCODE_SWZ, "SWZ", 1, 1 },
117 { OPCODE_TEX, "TEX", 1, 1 },
118 { OPCODE_TXB, "TXB", 1, 1 },
119 { OPCODE_TXD, "TXD", 3, 1 },
120 { OPCODE_TXL, "TXL", 1, 1 },
121 { OPCODE_TXP, "TXP", 1, 1 },
122 { OPCODE_XPD, "XPD", 2, 1 }
123 };
124
125
126 /**
127 * Return the number of src registers for the given instruction/opcode.
128 */
129 GLuint
_mesa_num_inst_src_regs(enum prog_opcode opcode)130 _mesa_num_inst_src_regs(enum prog_opcode opcode)
131 {
132 assert(opcode < MAX_OPCODE);
133 assert(opcode == InstInfo[opcode].Opcode);
134 assert(OPCODE_XPD == InstInfo[OPCODE_XPD].Opcode);
135 return InstInfo[opcode].NumSrcRegs;
136 }
137
138
139 /**
140 * Return the number of dst registers for the given instruction/opcode.
141 */
142 GLuint
_mesa_num_inst_dst_regs(enum prog_opcode opcode)143 _mesa_num_inst_dst_regs(enum prog_opcode opcode)
144 {
145 assert(opcode < MAX_OPCODE);
146 assert(opcode == InstInfo[opcode].Opcode);
147 assert(OPCODE_XPD == InstInfo[OPCODE_XPD].Opcode);
148 return InstInfo[opcode].NumDstRegs;
149 }
150
151
152 /**
153 * Return string name for given program opcode.
154 */
155 const char *
_mesa_opcode_string(enum prog_opcode opcode)156 _mesa_opcode_string(enum prog_opcode opcode)
157 {
158 if (opcode < MAX_OPCODE)
159 return InstInfo[opcode].Name;
160 else {
161 static char s[20];
162 snprintf(s, sizeof(s), "OP%u", opcode);
163 return s;
164 }
165 }
166
167