2 * Copyright (C) 2008 Nicolai Haehnle.
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sublicense, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial
16 * portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
21 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
22 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
23 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
24 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 #ifndef __RADEON_PROGRAM_H_
29 #define __RADEON_PROGRAM_H_
34 #include "radeon_opcodes.h"
35 #include "radeon_code.h"
36 #include "radeon_program_constants.h"
37 #include "radeon_program_pair.h"
39 struct radeon_compiler;
41 struct rc_src_register {
44 /** Negative values may be used for relative addressing. */
45 signed int Index:(RC_REGISTER_INDEX_BITS+1);
46 unsigned int RelAddr:1;
48 unsigned int Swizzle:12;
50 /** Take the component-wise absolute value */
53 /** Post-Abs negation. */
54 unsigned int Negate:4;
57 struct rc_dst_register {
59 unsigned int Index:RC_REGISTER_INDEX_BITS;
60 unsigned int WriteMask:4;
63 struct rc_presub_instruction {
64 rc_presubtract_op Opcode;
65 struct rc_src_register SrcReg[2];
69 * Instructions are maintained by the compiler in a doubly linked list
70 * of these structures.
72 * This instruction format is intended to be expanded for hardware-specific
73 * trickery. At different stages of compilation, a different set of
74 * instruction types may be valid.
76 struct rc_sub_instruction {
77 struct rc_src_register SrcReg[3];
78 struct rc_dst_register DstReg;
81 * Opcode of this instruction, according to \ref rc_opcode enums.
83 unsigned int Opcode:8;
86 * Saturate each value of the result to the range [0,1] or [-1,1],
87 * according to \ref rc_saturate_mode enums.
89 unsigned int SaturateMode:2;
92 * Writing to the special register RC_SPECIAL_ALU_RESULT
95 unsigned int WriteALUResult:2;
96 unsigned int ALUResultCompare:3;
100 * \name Extra fields for TEX, TXB, TXD, TXL, TXP instructions.
103 /** Source texture unit. */
104 unsigned int TexSrcUnit:5;
106 /** Source texture target, one of the \ref rc_texture_target enums */
107 unsigned int TexSrcTarget:3;
109 /** True if tex instruction should do shadow comparison */
110 unsigned int TexShadow:1;
112 /**R500 Only. How to swizzle the result of a TEX lookup*/
113 unsigned int TexSwizzle:12;
116 /** This holds information about the presubtract operation used by
117 * this instruction. */
118 struct rc_presub_instruction PreSub;
122 RC_INSTRUCTION_NORMAL = 0,
124 } rc_instruction_type;
126 struct rc_instruction {
127 struct rc_instruction * Prev;
128 struct rc_instruction * Next;
130 rc_instruction_type Type;
132 struct rc_sub_instruction I;
133 struct rc_pair_instruction P;
137 * Warning: IPs are not stable. If you want to use them,
138 * you need to recompute them at the beginning of each pass
139 * using \ref rc_recompute_ips
146 * Instructions.Next points to the first instruction,
147 * Instructions.Prev points to the last instruction.
149 struct rc_instruction Instructions;
151 /* Long term, we should probably remove InputsRead & OutputsWritten,
152 * since updating dependent state can be fragile, and they aren't
153 * actually used very often. */
155 uint32_t OutputsWritten;
156 uint32_t ShadowSamplers; /**< Texture units used for shadow sampling. */
158 struct rc_constant_list Constants;
162 * A transformation that can be passed to \ref rc_local_transform.
164 * The function will be called once for each instruction.
165 * It has to either emit the appropriate transformed code for the instruction
166 * and return true, or return false if it doesn't understand the
169 * The function gets passed the userData as last parameter.
171 struct radeon_program_transformation {
173 struct radeon_compiler*,
174 struct rc_instruction*,
179 void rc_local_transform(
180 struct radeon_compiler *c,
183 void rc_get_used_temporaries(
184 struct radeon_compiler * c,
185 unsigned char * used,
186 unsigned int used_length);
188 int rc_find_free_temporary_list(
189 struct radeon_compiler * c,
190 unsigned char * used,
191 unsigned int used_length,
194 unsigned int rc_find_free_temporary(struct radeon_compiler * c);
196 struct rc_instruction *rc_alloc_instruction(struct radeon_compiler * c);
197 struct rc_instruction *rc_insert_new_instruction(struct radeon_compiler * c, struct rc_instruction * after);
198 void rc_insert_instruction(struct rc_instruction * after, struct rc_instruction * inst);
199 void rc_remove_instruction(struct rc_instruction * inst);
201 unsigned int rc_recompute_ips(struct radeon_compiler * c);
203 void rc_print_program(const struct rc_program *prog);
205 rc_swizzle rc_mask_to_swizzle(unsigned int mask);