1 /**************************************************************************
3 * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * 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, sub license, 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 portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
33 #include "i915_context.h"
36 #include "pipe/p_shader_tokens.h"
38 #include "tgsi/tgsi_parse.h"
40 #define I915_PROGRAM_SIZE (3 * I915_MAX_INSN)
42 /* Use those indices for pos/face routing, must be >= num of inputs */
43 #define I915_SEMANTIC_POS 100
44 #define I915_SEMANTIC_FACE 101
48 * Program translation state
50 struct i915_fp_compile {
51 struct i915_fragment_shader *shader; /* the shader we're compiling */
53 boolean used_constants[I915_MAX_CONSTANT];
55 /** maps TGSI immediate index to constant slot */
57 uint immediates_map[I915_MAX_CONSTANT];
58 float immediates[I915_MAX_CONSTANT][4];
60 boolean first_instruction;
62 uint declarations[I915_PROGRAM_SIZE];
63 uint program[I915_PROGRAM_SIZE];
65 uint *csr; /**< Cursor, points into program. */
67 uint *decl; /**< Cursor, points into declarations. */
69 uint decl_s; /**< flags for which s regs need to be decl'd */
70 uint decl_t; /**< flags for which t regs need to be decl'd */
72 uint temp_flag; /**< Tracks temporary regs which are in use */
73 uint utemp_flag; /**< Tracks TYPE_U temporary regs which are in use */
75 uint register_phases[16];
81 boolean error; /**< Set if i915_program_error() is called */
82 uint NumNativeInstructions;
83 uint NumNativeAluInstructions;
84 uint NumNativeTexInstructions;
85 uint NumNativeTexIndirections;
89 /* Having zero and one in here makes the definition of swizzle a lot
92 #define UREG_TYPE_SHIFT 29
93 #define UREG_NR_SHIFT 24
94 #define UREG_CHANNEL_X_NEGATE_SHIFT 23
95 #define UREG_CHANNEL_X_SHIFT 20
96 #define UREG_CHANNEL_Y_NEGATE_SHIFT 19
97 #define UREG_CHANNEL_Y_SHIFT 16
98 #define UREG_CHANNEL_Z_NEGATE_SHIFT 15
99 #define UREG_CHANNEL_Z_SHIFT 12
100 #define UREG_CHANNEL_W_NEGATE_SHIFT 11
101 #define UREG_CHANNEL_W_SHIFT 8
102 #define UREG_CHANNEL_ZERO_NEGATE_MBZ 5
103 #define UREG_CHANNEL_ZERO_SHIFT 4
104 #define UREG_CHANNEL_ONE_NEGATE_MBZ 1
105 #define UREG_CHANNEL_ONE_SHIFT 0
107 #define UREG_BAD 0xffffffff /* not a valid ureg */
113 #define ZERO SRC_ZERO
118 #define UREG( type, nr ) (((type)<< UREG_TYPE_SHIFT) | \
119 ((nr) << UREG_NR_SHIFT) | \
120 (X << UREG_CHANNEL_X_SHIFT) | \
121 (Y << UREG_CHANNEL_Y_SHIFT) | \
122 (Z << UREG_CHANNEL_Z_SHIFT) | \
123 (W << UREG_CHANNEL_W_SHIFT) | \
124 (ZERO << UREG_CHANNEL_ZERO_SHIFT) | \
125 (ONE << UREG_CHANNEL_ONE_SHIFT))
127 #define GET_CHANNEL_SRC( reg, channel ) ((reg<<(channel*4)) & (0xf<<20))
128 #define CHANNEL_SRC( src, channel ) (src>>(channel*4))
130 #define GET_UREG_TYPE(reg) (((reg)>>UREG_TYPE_SHIFT)®_TYPE_MASK)
131 #define GET_UREG_NR(reg) (((reg)>>UREG_NR_SHIFT)®_NR_MASK)
135 #define UREG_XYZW_CHANNEL_MASK 0x00ffff00
137 /* One neat thing about the UREG representation:
140 swizzle(int reg, uint x, uint y, uint z, uint w)
142 assert(x <= SRC_ONE);
143 assert(y <= SRC_ONE);
144 assert(z <= SRC_ONE);
145 assert(w <= SRC_ONE);
146 return ((reg & ~UREG_XYZW_CHANNEL_MASK) |
147 CHANNEL_SRC(GET_CHANNEL_SRC(reg, x), 0) |
148 CHANNEL_SRC(GET_CHANNEL_SRC(reg, y), 1) |
149 CHANNEL_SRC(GET_CHANNEL_SRC(reg, z), 2) |
150 CHANNEL_SRC(GET_CHANNEL_SRC(reg, w), 3));
155 /***********************************************************************
156 * Public interface for the compiler
159 i915_translate_fragment_program( struct i915_context *i915,
160 struct i915_fragment_shader *fs);
164 extern uint i915_get_temp(struct i915_fp_compile *p);
165 extern uint i915_get_utemp(struct i915_fp_compile *p);
166 extern void i915_release_utemps(struct i915_fp_compile *p);
169 extern uint i915_emit_texld(struct i915_fp_compile *p,
177 extern uint i915_emit_arith(struct i915_fp_compile *p,
182 uint src0, uint src1, uint src2);
184 extern uint i915_emit_decl(struct i915_fp_compile *p,
185 uint type, uint nr, uint d0_flags);
188 extern uint i915_emit_const1f(struct i915_fp_compile *p, float c0);
190 extern uint i915_emit_const2f(struct i915_fp_compile *p,
193 extern uint i915_emit_const4fv(struct i915_fp_compile *p,
196 extern uint i915_emit_const4f(struct i915_fp_compile *p,
201 /*======================================================================
202 * i915_fpc_translate.c
206 i915_program_error(struct i915_fp_compile *p, const char *msg, ...);
209 /*======================================================================
210 * i915_fpc_optimize.c
214 struct i915_src_register
216 unsigned File : 4; /* TGSI_FILE_ */
217 unsigned Indirect : 1; /* BOOL */
218 unsigned Dimension : 1; /* BOOL */
219 int Index : 16; /* SINT */
220 unsigned SwizzleX : 3; /* TGSI_SWIZZLE_ */
221 unsigned SwizzleY : 3; /* TGSI_SWIZZLE_ */
222 unsigned SwizzleZ : 3; /* TGSI_SWIZZLE_ */
223 unsigned SwizzleW : 3; /* TGSI_SWIZZLE_ */
224 unsigned Absolute : 1; /* BOOL */
225 unsigned Negate : 1; /* BOOL */
228 /* Additional swizzle supported in i915 */
229 #define TGSI_SWIZZLE_ZERO 4
230 #define TGSI_SWIZZLE_ONE 5
232 struct i915_dst_register
234 unsigned File : 4; /* TGSI_FILE_ */
235 unsigned WriteMask : 4; /* TGSI_WRITEMASK_ */
236 unsigned Indirect : 1; /* BOOL */
237 unsigned Dimension : 1; /* BOOL */
238 int Index : 16; /* SINT */
239 unsigned Padding : 6;
243 struct i915_full_dst_register
245 struct i915_dst_register Register;
247 struct tgsi_src_register Indirect;
248 struct tgsi_dimension Dimension;
249 struct tgsi_src_register DimIndirect;
253 struct i915_full_src_register
255 struct i915_src_register Register;
257 struct tgsi_src_register Indirect;
258 struct tgsi_dimension Dimension;
259 struct tgsi_src_register DimIndirect;
263 struct i915_full_instruction
265 struct tgsi_instruction Instruction;
267 struct tgsi_instruction_predicate Predicate;
268 struct tgsi_instruction_label Label;
270 struct tgsi_instruction_texture Texture;
271 struct i915_full_dst_register Dst[1];
272 struct i915_full_src_register Src[3];
276 union i915_full_token
278 struct tgsi_token Token;
279 struct tgsi_full_declaration FullDeclaration;
280 struct tgsi_full_immediate FullImmediate;
281 struct i915_full_instruction FullInstruction;
282 struct tgsi_full_property FullProperty;
285 struct i915_token_list
287 union i915_full_token* Tokens;
291 extern struct i915_token_list* i915_optimize(const struct tgsi_token *tokens);
293 extern void i915_optimize_free(struct i915_token_list* tokens);