bea5d0551e47e464d1d1f4d533794104a734dbc7
[mesa.git] / src / mesa / shader / prog_instruction.c
1 /*
2 * Mesa 3-D graphics library
3 * Version: 6.5.3
4 *
5 * Copyright (C) 1999-2005 Brian Paul 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 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25
26 #include "glheader.h"
27 #include "imports.h"
28 #include "mtypes.h"
29 #include "prog_instruction.h"
30
31
32 /**
33 * Initialize program instruction fields to defaults.
34 * \param inst first instruction to initialize
35 * \param count number of instructions to initialize
36 */
37 void
38 _mesa_init_instructions(struct prog_instruction *inst, GLuint count)
39 {
40 GLuint i;
41
42 _mesa_bzero(inst, count * sizeof(struct prog_instruction));
43
44 for (i = 0; i < count; i++) {
45 inst[i].SrcReg[0].File = PROGRAM_UNDEFINED;
46 inst[i].SrcReg[0].Swizzle = SWIZZLE_NOOP;
47 inst[i].SrcReg[1].File = PROGRAM_UNDEFINED;
48 inst[i].SrcReg[1].Swizzle = SWIZZLE_NOOP;
49 inst[i].SrcReg[2].File = PROGRAM_UNDEFINED;
50 inst[i].SrcReg[2].Swizzle = SWIZZLE_NOOP;
51
52 inst[i].DstReg.File = PROGRAM_UNDEFINED;
53 inst[i].DstReg.WriteMask = WRITEMASK_XYZW;
54 inst[i].DstReg.CondMask = COND_TR;
55 inst[i].DstReg.CondSwizzle = SWIZZLE_NOOP;
56
57 inst[i].SaturateMode = SATURATE_OFF;
58 inst[i].Precision = FLOAT32;
59 }
60 }
61
62
63 /**
64 * Allocate an array of program instructions.
65 * \param numInst number of instructions
66 * \return pointer to instruction memory
67 */
68 struct prog_instruction *
69 _mesa_alloc_instructions(GLuint numInst)
70 {
71 return (struct prog_instruction *)
72 _mesa_calloc(numInst * sizeof(struct prog_instruction));
73 }
74
75
76 /**
77 * Reallocate memory storing an array of program instructions.
78 * This is used when we need to append additional instructions onto an
79 * program.
80 * \param oldInst pointer to first of old/src instructions
81 * \param numOldInst number of instructions at <oldInst>
82 * \param numNewInst desired size of new instruction array.
83 * \return pointer to start of new instruction array.
84 */
85 struct prog_instruction *
86 _mesa_realloc_instructions(struct prog_instruction *oldInst,
87 GLuint numOldInst, GLuint numNewInst)
88 {
89 struct prog_instruction *newInst;
90
91 newInst = (struct prog_instruction *)
92 _mesa_realloc(oldInst,
93 numOldInst * sizeof(struct prog_instruction),
94 numNewInst * sizeof(struct prog_instruction));
95
96 return newInst;
97 }
98
99
100 /**
101 * Copy an array of program instructions.
102 * \param dest pointer to destination.
103 * \param src pointer to source.
104 * \param n number of instructions to copy.
105 * \return pointer to destination.
106 */
107 struct prog_instruction *
108 _mesa_copy_instructions(struct prog_instruction *dest,
109 const struct prog_instruction *src, GLuint n)
110 {
111 GLuint i;
112 _mesa_memcpy(dest, src, n * sizeof(struct prog_instruction));
113 for (i = 0; i < n; i++) {
114 if (src[i].Comment)
115 dest[i].Comment = _mesa_strdup(src[i].Comment);
116 }
117 return dest;
118 }
119
120
121 /**
122 * Free an array of instructions
123 */
124 void
125 _mesa_free_instructions(struct prog_instruction *inst, GLuint count)
126 {
127 GLuint i;
128 for (i = 0; i < count; i++) {
129 if (inst[i].Data)
130 _mesa_free(inst[i].Data);
131 if (inst[i].Comment)
132 _mesa_free((char *) inst[i].Comment);
133 }
134 _mesa_free(inst);
135 }
136
137
138 /**
139 * Basic info about each instruction
140 */
141 struct instruction_info
142 {
143 gl_inst_opcode Opcode;
144 const char *Name;
145 GLuint NumSrcRegs;
146 GLuint NumDstRegs;
147 };
148
149 /**
150 * Instruction info
151 * \note Opcode should equal array index!
152 */
153 static const struct instruction_info InstInfo[MAX_OPCODE] = {
154 { OPCODE_NOP, "NOP", 0, 0 },
155 { OPCODE_ABS, "ABS", 1, 1 },
156 { OPCODE_ADD, "ADD", 2, 1 },
157 { OPCODE_ARA, "ARA", 1, 1 },
158 { OPCODE_ARL, "ARL", 1, 1 },
159 { OPCODE_ARL_NV, "ARL", 1, 1 },
160 { OPCODE_ARR, "ARL", 1, 1 },
161 { OPCODE_BGNLOOP,"BGNLOOP", 0, 0 },
162 { OPCODE_BGNSUB, "BGNSUB", 0, 0 },
163 { OPCODE_BRA, "BRA", 0, 0 },
164 { OPCODE_BRK, "BRK", 0, 0 },
165 { OPCODE_CAL, "CAL", 0, 0 },
166 { OPCODE_CMP, "CMP", 3, 1 },
167 { OPCODE_CONT, "CONT", 0, 0 },
168 { OPCODE_COS, "COS", 1, 1 },
169 { OPCODE_DDX, "DDX", 1, 1 },
170 { OPCODE_DDY, "DDY", 1, 1 },
171 { OPCODE_DP3, "DP3", 2, 1 },
172 { OPCODE_DP4, "DP4", 2, 1 },
173 { OPCODE_DPH, "DPH", 2, 1 },
174 { OPCODE_DST, "DST", 2, 1 },
175 { OPCODE_ELSE, "ELSE", 0, 0 },
176 { OPCODE_END, "END", 0, 0 },
177 { OPCODE_ENDIF, "ENDIF", 0, 0 },
178 { OPCODE_ENDLOOP,"ENDLOOP", 0, 0 },
179 { OPCODE_ENDSUB, "ENDSUB", 0, 0 },
180 { OPCODE_EX2, "EX2", 1, 1 },
181 { OPCODE_EXP, "EXP", 1, 1 },
182 { OPCODE_FLR, "FLR", 1, 1 },
183 { OPCODE_FRC, "FRC", 1, 1 },
184 { OPCODE_IF, "IF", 1, 0 },
185 { OPCODE_INT, "INT", 1, 1 },
186 { OPCODE_KIL, "KIL", 1, 0 },
187 { OPCODE_KIL_NV, "KIL", 0, 0 },
188 { OPCODE_LG2, "LG2", 1, 1 },
189 { OPCODE_LIT, "LIT", 1, 1 },
190 { OPCODE_LOG, "LOG", 1, 1 },
191 { OPCODE_LRP, "LRP", 3, 1 },
192 { OPCODE_MAD, "MAD", 3, 1 },
193 { OPCODE_MAX, "MAX", 2, 1 },
194 { OPCODE_MIN, "MIN", 2, 1 },
195 { OPCODE_MOV, "MOV", 1, 1 },
196 { OPCODE_MUL, "MUL", 2, 1 },
197 { OPCODE_NOISE1, "NOISE1", 1, 1 },
198 { OPCODE_NOISE2, "NOISE2", 1, 1 },
199 { OPCODE_NOISE3, "NOISE3", 1, 1 },
200 { OPCODE_NOISE4, "NOISE4", 1, 1 },
201 { OPCODE_PK2H, "PK2H", 1, 1 },
202 { OPCODE_PK2US, "PK2US", 1, 1 },
203 { OPCODE_PK4B, "PK4B", 1, 1 },
204 { OPCODE_PK4UB, "PK4UB", 1, 1 },
205 { OPCODE_POW, "POW", 2, 1 },
206 { OPCODE_POPA, "POPA", 0, 0 },
207 { OPCODE_PRINT, "PRINT", 1, 0 },
208 { OPCODE_PUSHA, "PUSHA", 0, 0 },
209 { OPCODE_RCC, "RCC", 1, 1 },
210 { OPCODE_RCP, "RCP", 1, 1 },
211 { OPCODE_RET, "RET", 0, 0 },
212 { OPCODE_RFL, "RFL", 1, 1 },
213 { OPCODE_RSQ, "RSQ", 1, 1 },
214 { OPCODE_SCS, "SCS", 1, 1 },
215 { OPCODE_SEQ, "SEQ", 2, 1 },
216 { OPCODE_SFL, "SFL", 0, 1 },
217 { OPCODE_SGE, "SGE", 2, 1 },
218 { OPCODE_SGT, "SGT", 2, 1 },
219 { OPCODE_SIN, "SIN", 1, 1 },
220 { OPCODE_SLE, "SLE", 2, 1 },
221 { OPCODE_SLT, "SLT", 2, 1 },
222 { OPCODE_SNE, "SNE", 2, 1 },
223 { OPCODE_SSG, "SSG", 1, 1 },
224 { OPCODE_STR, "STR", 0, 1 },
225 { OPCODE_SUB, "SUB", 2, 1 },
226 { OPCODE_SWZ, "SWZ", 1, 1 },
227 { OPCODE_TEX, "TEX", 1, 1 },
228 { OPCODE_TXB, "TXB", 1, 1 },
229 { OPCODE_TXD, "TXD", 3, 1 },
230 { OPCODE_TXL, "TXL", 1, 1 },
231 { OPCODE_TXP, "TXP", 1, 1 },
232 { OPCODE_TXP_NV, "TXP", 1, 1 },
233 { OPCODE_UP2H, "UP2H", 1, 1 },
234 { OPCODE_UP2US, "UP2US", 1, 1 },
235 { OPCODE_UP4B, "UP4B", 1, 1 },
236 { OPCODE_UP4UB, "UP4UB", 1, 1 },
237 { OPCODE_X2D, "X2D", 3, 1 },
238 { OPCODE_XPD, "XPD", 2, 1 }
239 };
240
241
242 /**
243 * Return the number of src registers for the given instruction/opcode.
244 */
245 GLuint
246 _mesa_num_inst_src_regs(gl_inst_opcode opcode)
247 {
248 ASSERT(opcode == InstInfo[opcode].Opcode);
249 ASSERT(OPCODE_XPD == InstInfo[OPCODE_XPD].Opcode);
250 return InstInfo[opcode].NumSrcRegs;
251 }
252
253
254 /**
255 * Return the number of dst registers for the given instruction/opcode.
256 */
257 GLuint
258 _mesa_num_inst_dst_regs(gl_inst_opcode opcode)
259 {
260 ASSERT(opcode == InstInfo[opcode].Opcode);
261 ASSERT(OPCODE_XPD == InstInfo[OPCODE_XPD].Opcode);
262 return InstInfo[opcode].NumDstRegs;
263 }
264
265
266 GLboolean
267 _mesa_is_tex_instruction(gl_inst_opcode opcode)
268 {
269 return (opcode == OPCODE_TEX ||
270 opcode == OPCODE_TXB ||
271 opcode == OPCODE_TXD ||
272 opcode == OPCODE_TXL ||
273 opcode == OPCODE_TXP);
274 }
275
276
277 /**
278 * Return string name for given program opcode.
279 */
280 const char *
281 _mesa_opcode_string(gl_inst_opcode opcode)
282 {
283 ASSERT(opcode < MAX_OPCODE);
284 return InstInfo[opcode].Name;
285 }
286