1 /*
2 * Copyright (C) 2010 Corbin Simpson
3 * Copyright (C) 2010 Marek Olšák <maraeo@gmail.com>
4 *
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining
8 * a copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sublicense, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * The above copyright notice and this permission notice (including the
16 * next paragraph) shall be included in all copies or substantial
17 * portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
20 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
22 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
23 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
24 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
25 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 *
27 */
28
29 #include "radeon_program_tex.h"
30
31 #include "radeon_compiler_util.h"
32
33 /* Series of transformations to be done on textures. */
34
shadow_fail_value(struct r300_fragment_program_compiler * compiler,int tmu)35 static struct rc_src_register shadow_fail_value(struct r300_fragment_program_compiler *compiler,
36 int tmu)
37 {
38 struct rc_src_register reg = { 0, 0, 0, 0, 0, 0 };
39
40 reg.File = RC_FILE_NONE;
41 reg.Swizzle = combine_swizzles(RC_SWIZZLE_0000,
42 compiler->state.unit[tmu].texture_swizzle);
43 return reg;
44 }
45
shadow_pass_value(struct r300_fragment_program_compiler * compiler,int tmu)46 static struct rc_src_register shadow_pass_value(struct r300_fragment_program_compiler *compiler,
47 int tmu)
48 {
49 struct rc_src_register reg = { 0, 0, 0, 0, 0, 0 };
50
51 reg.File = RC_FILE_NONE;
52 reg.Swizzle = combine_swizzles(RC_SWIZZLE_1111,
53 compiler->state.unit[tmu].texture_swizzle);
54 return reg;
55 }
56
scale_texcoords(struct r300_fragment_program_compiler * compiler,struct rc_instruction * inst,unsigned state_constant)57 static void scale_texcoords(struct r300_fragment_program_compiler *compiler,
58 struct rc_instruction *inst,
59 unsigned state_constant)
60 {
61 struct rc_instruction *inst_mov;
62
63 unsigned temp = rc_find_free_temporary(&compiler->Base);
64
65 inst_mov = rc_insert_new_instruction(&compiler->Base, inst->Prev);
66
67 inst_mov->U.I.Opcode = RC_OPCODE_MUL;
68 inst_mov->U.I.DstReg.File = RC_FILE_TEMPORARY;
69 inst_mov->U.I.DstReg.Index = temp;
70 inst_mov->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
71 inst_mov->U.I.SrcReg[1].File = RC_FILE_CONSTANT;
72 inst_mov->U.I.SrcReg[1].Index =
73 rc_constants_add_state(&compiler->Base.Program.Constants,
74 state_constant, inst->U.I.TexSrcUnit);
75
76 reset_srcreg(&inst->U.I.SrcReg[0]);
77 inst->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
78 inst->U.I.SrcReg[0].Index = temp;
79 }
80
projective_divide(struct r300_fragment_program_compiler * compiler,struct rc_instruction * inst)81 static void projective_divide(struct r300_fragment_program_compiler *compiler,
82 struct rc_instruction *inst)
83 {
84 struct rc_instruction *inst_mul, *inst_rcp;
85
86 unsigned temp = rc_find_free_temporary(&compiler->Base);
87
88 inst_rcp = rc_insert_new_instruction(&compiler->Base, inst->Prev);
89 inst_rcp->U.I.Opcode = RC_OPCODE_RCP;
90 inst_rcp->U.I.DstReg.File = RC_FILE_TEMPORARY;
91 inst_rcp->U.I.DstReg.Index = temp;
92 inst_rcp->U.I.DstReg.WriteMask = RC_MASK_W;
93 inst_rcp->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
94 /* Because the input can be arbitrarily swizzled,
95 * read the component mapped to W. */
96 inst_rcp->U.I.SrcReg[0].Swizzle =
97 RC_MAKE_SWIZZLE_SMEAR(GET_SWZ(inst->U.I.SrcReg[0].Swizzle, 3));
98
99 inst_mul = rc_insert_new_instruction(&compiler->Base, inst->Prev);
100 inst_mul->U.I.Opcode = RC_OPCODE_MUL;
101 inst_mul->U.I.DstReg.File = RC_FILE_TEMPORARY;
102 inst_mul->U.I.DstReg.Index = temp;
103 inst_mul->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
104 inst_mul->U.I.SrcReg[1].File = RC_FILE_TEMPORARY;
105 inst_mul->U.I.SrcReg[1].Index = temp;
106 inst_mul->U.I.SrcReg[1].Swizzle = RC_SWIZZLE_WWWW;
107
108 reset_srcreg(&inst->U.I.SrcReg[0]);
109 inst->U.I.Opcode = RC_OPCODE_TEX;
110 inst->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
111 inst->U.I.SrcReg[0].Index = temp;
112 }
113
114 /**
115 * Transform TEX, TXP, TXB, and KIL instructions in the following ways:
116 * - implement texture compare (shadow extensions)
117 * - extract non-native source / destination operands
118 * - premultiply texture coordinates for RECT
119 * - extract operand swizzles
120 * - introduce a temporary register when write masks are needed
121 */
radeonTransformTEX(struct radeon_compiler * c,struct rc_instruction * inst,void * data)122 int radeonTransformTEX(
123 struct radeon_compiler * c,
124 struct rc_instruction * inst,
125 void* data)
126 {
127 struct r300_fragment_program_compiler *compiler =
128 (struct r300_fragment_program_compiler*)data;
129 rc_wrap_mode wrapmode = compiler->state.unit[inst->U.I.TexSrcUnit].wrap_mode;
130 int is_rect = inst->U.I.TexSrcTarget == RC_TEXTURE_RECT;
131
132 if (inst->U.I.Opcode != RC_OPCODE_TEX &&
133 inst->U.I.Opcode != RC_OPCODE_TXB &&
134 inst->U.I.Opcode != RC_OPCODE_TXP &&
135 inst->U.I.Opcode != RC_OPCODE_TXD &&
136 inst->U.I.Opcode != RC_OPCODE_TXL &&
137 inst->U.I.Opcode != RC_OPCODE_KIL)
138 return 0;
139
140 /* ARB_shadow & EXT_shadow_funcs */
141 if (inst->U.I.Opcode != RC_OPCODE_KIL &&
142 ((c->Program.ShadowSamplers & (1U << inst->U.I.TexSrcUnit)) ||
143 (compiler->state.unit[inst->U.I.TexSrcUnit].compare_mode_enabled))) {
144 rc_compare_func comparefunc = compiler->state.unit[inst->U.I.TexSrcUnit].texture_compare_func;
145
146 if (comparefunc == RC_COMPARE_FUNC_NEVER || comparefunc == RC_COMPARE_FUNC_ALWAYS) {
147 inst->U.I.Opcode = RC_OPCODE_MOV;
148
149 if (comparefunc == RC_COMPARE_FUNC_ALWAYS) {
150 inst->U.I.SrcReg[0] = shadow_pass_value(compiler, inst->U.I.TexSrcUnit);
151 } else {
152 inst->U.I.SrcReg[0] = shadow_fail_value(compiler, inst->U.I.TexSrcUnit);
153 }
154
155 return 1;
156 } else {
157 struct rc_instruction * inst_rcp = NULL;
158 struct rc_instruction *inst_mul, *inst_add, *inst_cmp;
159 unsigned tmp_texsample;
160 unsigned tmp_sum;
161 int pass, fail;
162
163 /* Save the output register. */
164 struct rc_dst_register output_reg = inst->U.I.DstReg;
165 unsigned saturate_mode = inst->U.I.SaturateMode;
166
167 /* Redirect TEX to a new temp. */
168 tmp_texsample = rc_find_free_temporary(c);
169 inst->U.I.SaturateMode = 0;
170 inst->U.I.DstReg.File = RC_FILE_TEMPORARY;
171 inst->U.I.DstReg.Index = tmp_texsample;
172 inst->U.I.DstReg.WriteMask = RC_MASK_XYZW;
173
174 tmp_sum = rc_find_free_temporary(c);
175
176 if (inst->U.I.Opcode == RC_OPCODE_TXP) {
177 /* Compute 1/W. */
178 inst_rcp = rc_insert_new_instruction(c, inst);
179 inst_rcp->U.I.Opcode = RC_OPCODE_RCP;
180 inst_rcp->U.I.DstReg.File = RC_FILE_TEMPORARY;
181 inst_rcp->U.I.DstReg.Index = tmp_sum;
182 inst_rcp->U.I.DstReg.WriteMask = RC_MASK_W;
183 inst_rcp->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
184 inst_rcp->U.I.SrcReg[0].Swizzle =
185 RC_MAKE_SWIZZLE_SMEAR(GET_SWZ(inst->U.I.SrcReg[0].Swizzle, 3));
186 }
187
188 /* Divide Z by W (if it's TXP) and saturate. */
189 inst_mul = rc_insert_new_instruction(c, inst_rcp ? inst_rcp : inst);
190 inst_mul->U.I.Opcode = inst->U.I.Opcode == RC_OPCODE_TXP ? RC_OPCODE_MUL : RC_OPCODE_MOV;
191 inst_mul->U.I.DstReg.File = RC_FILE_TEMPORARY;
192 inst_mul->U.I.DstReg.Index = tmp_sum;
193 inst_mul->U.I.DstReg.WriteMask = RC_MASK_W;
194 inst_mul->U.I.SaturateMode = RC_SATURATE_ZERO_ONE;
195 inst_mul->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
196 inst_mul->U.I.SrcReg[0].Swizzle =
197 RC_MAKE_SWIZZLE_SMEAR(GET_SWZ(inst->U.I.SrcReg[0].Swizzle, 2));
198 if (inst->U.I.Opcode == RC_OPCODE_TXP) {
199 inst_mul->U.I.SrcReg[1].File = RC_FILE_TEMPORARY;
200 inst_mul->U.I.SrcReg[1].Index = tmp_sum;
201 inst_mul->U.I.SrcReg[1].Swizzle = RC_SWIZZLE_WWWW;
202 }
203
204 /* Add the depth texture value. */
205 inst_add = rc_insert_new_instruction(c, inst_mul);
206 inst_add->U.I.Opcode = RC_OPCODE_ADD;
207 inst_add->U.I.DstReg.File = RC_FILE_TEMPORARY;
208 inst_add->U.I.DstReg.Index = tmp_sum;
209 inst_add->U.I.DstReg.WriteMask = RC_MASK_W;
210 inst_add->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
211 inst_add->U.I.SrcReg[0].Index = tmp_sum;
212 inst_add->U.I.SrcReg[0].Swizzle = RC_SWIZZLE_WWWW;
213 inst_add->U.I.SrcReg[1].File = RC_FILE_TEMPORARY;
214 inst_add->U.I.SrcReg[1].Index = tmp_texsample;
215 inst_add->U.I.SrcReg[1].Swizzle = RC_SWIZZLE_XXXX;
216
217 /* Note that SrcReg[0] is r, SrcReg[1] is tex and:
218 * LESS: r < tex <=> -tex+r < 0
219 * GEQUAL: r >= tex <=> not (-tex+r < 0)
220 * GREATER: r > tex <=> tex-r < 0
221 * LEQUAL: r <= tex <=> not ( tex-r < 0)
222 * EQUAL: GEQUAL
223 * NOTEQUAL:LESS
224 */
225
226 /* This negates either r or tex: */
227 if (comparefunc == RC_COMPARE_FUNC_LESS || comparefunc == RC_COMPARE_FUNC_GEQUAL ||
228 comparefunc == RC_COMPARE_FUNC_EQUAL || comparefunc == RC_COMPARE_FUNC_NOTEQUAL)
229 inst_add->U.I.SrcReg[1].Negate = inst_add->U.I.SrcReg[1].Negate ^ RC_MASK_XYZW;
230 else
231 inst_add->U.I.SrcReg[0].Negate = inst_add->U.I.SrcReg[0].Negate ^ RC_MASK_XYZW;
232
233 /* This negates the whole expresion: */
234 if (comparefunc == RC_COMPARE_FUNC_LESS || comparefunc == RC_COMPARE_FUNC_GREATER ||
235 comparefunc == RC_COMPARE_FUNC_NOTEQUAL) {
236 pass = 1;
237 fail = 2;
238 } else {
239 pass = 2;
240 fail = 1;
241 }
242
243 inst_cmp = rc_insert_new_instruction(c, inst_add);
244 inst_cmp->U.I.Opcode = RC_OPCODE_CMP;
245 inst_cmp->U.I.SaturateMode = saturate_mode;
246 inst_cmp->U.I.DstReg = output_reg;
247 inst_cmp->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
248 inst_cmp->U.I.SrcReg[0].Index = tmp_sum;
249 inst_cmp->U.I.SrcReg[0].Swizzle =
250 combine_swizzles(RC_SWIZZLE_WWWW,
251 compiler->state.unit[inst->U.I.TexSrcUnit].texture_swizzle);
252 inst_cmp->U.I.SrcReg[pass] = shadow_pass_value(compiler, inst->U.I.TexSrcUnit);
253 inst_cmp->U.I.SrcReg[fail] = shadow_fail_value(compiler, inst->U.I.TexSrcUnit);
254
255 assert(tmp_texsample != tmp_sum);
256 }
257 }
258
259 /* R300 cannot sample from rectangles and the wrap mode fallback needs
260 * normalized coordinates anyway. */
261 if (inst->U.I.Opcode != RC_OPCODE_KIL &&
262 is_rect && (!c->is_r500 || wrapmode != RC_WRAP_NONE)) {
263 scale_texcoords(compiler, inst, RC_STATE_R300_TEXRECT_FACTOR);
264 inst->U.I.TexSrcTarget = RC_TEXTURE_2D;
265 }
266
267 /* Divide by W if needed. */
268 if (inst->U.I.Opcode == RC_OPCODE_TXP &&
269 (wrapmode == RC_WRAP_REPEAT || wrapmode == RC_WRAP_MIRRORED_REPEAT ||
270 compiler->state.unit[inst->U.I.TexSrcUnit].clamp_and_scale_before_fetch)) {
271 projective_divide(compiler, inst);
272 }
273
274 /* Texture wrap modes don't work on NPOT textures.
275 *
276 * Non-wrapped/clamped texcoords with NPOT are free in HW. Repeat and
277 * mirroring are not. If we need to repeat, we do:
278 *
279 * MUL temp, texcoord, <scaling factor constant>
280 * FRC temp, temp ; Discard integer portion of coords
281 *
282 * This gives us coords in [0, 1].
283 *
284 * Mirroring is trickier. We're going to start out like repeat:
285 *
286 * MUL temp, texcoord, <scaling factor constant> ; De-mirror across axes
287 * MUL temp, temp, 0.5 ; Pattern repeats in [0, 2]
288 * ; so scale to [0, 1]
289 * FRC temp, temp ; Make the pattern repeat
290 * MAD temp, temp, 2, -1 ; Move the pattern to [-1, 1]
291 * ADD temp, 1, -abs(temp) ; Now comes a neat trick: use abs to mirror the pattern.
292 * ; The pattern is backwards, so reverse it (1-x).
293 *
294 * This gives us coords in [0, 1].
295 *
296 * ~ C & M. ;)
297 */
298 if (inst->U.I.Opcode != RC_OPCODE_KIL &&
299 wrapmode != RC_WRAP_NONE) {
300 struct rc_instruction *inst_mov;
301 unsigned temp = rc_find_free_temporary(c);
302
303 if (wrapmode == RC_WRAP_REPEAT) {
304 /* Both instructions will be paired up. */
305 struct rc_instruction *inst_frc = rc_insert_new_instruction(c, inst->Prev);
306
307 inst_frc->U.I.Opcode = RC_OPCODE_FRC;
308 inst_frc->U.I.DstReg.File = RC_FILE_TEMPORARY;
309 inst_frc->U.I.DstReg.Index = temp;
310 inst_frc->U.I.DstReg.WriteMask = RC_MASK_XYZ;
311 inst_frc->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
312 } else if (wrapmode == RC_WRAP_MIRRORED_REPEAT) {
313 /*
314 * Function:
315 * f(v) = 1 - abs(frac(v * 0.5) * 2 - 1)
316 *
317 * Code:
318 * MUL temp, src0, 0.5
319 * FRC temp, temp
320 * MAD temp, temp, 2, -1
321 * ADD temp, 1, -abs(temp)
322 */
323
324 struct rc_instruction *inst_mul, *inst_frc, *inst_mad, *inst_add;
325 unsigned two, two_swizzle;
326
327 inst_mul = rc_insert_new_instruction(c, inst->Prev);
328
329 inst_mul->U.I.Opcode = RC_OPCODE_MUL;
330 inst_mul->U.I.DstReg.File = RC_FILE_TEMPORARY;
331 inst_mul->U.I.DstReg.Index = temp;
332 inst_mul->U.I.DstReg.WriteMask = RC_MASK_XYZ;
333 inst_mul->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
334 inst_mul->U.I.SrcReg[1].Swizzle = RC_SWIZZLE_HHHH;
335
336 inst_frc = rc_insert_new_instruction(c, inst->Prev);
337
338 inst_frc->U.I.Opcode = RC_OPCODE_FRC;
339 inst_frc->U.I.DstReg.File = RC_FILE_TEMPORARY;
340 inst_frc->U.I.DstReg.Index = temp;
341 inst_frc->U.I.DstReg.WriteMask = RC_MASK_XYZ;
342 inst_frc->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
343 inst_frc->U.I.SrcReg[0].Index = temp;
344 inst_frc->U.I.SrcReg[0].Swizzle = RC_SWIZZLE_XYZ0;
345
346 two = rc_constants_add_immediate_scalar(&c->Program.Constants, 2, &two_swizzle);
347 inst_mad = rc_insert_new_instruction(c, inst->Prev);
348
349 inst_mad->U.I.Opcode = RC_OPCODE_MAD;
350 inst_mad->U.I.DstReg.File = RC_FILE_TEMPORARY;
351 inst_mad->U.I.DstReg.Index = temp;
352 inst_mad->U.I.DstReg.WriteMask = RC_MASK_XYZ;
353 inst_mad->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
354 inst_mad->U.I.SrcReg[0].Index = temp;
355 inst_mad->U.I.SrcReg[0].Swizzle = RC_SWIZZLE_XYZ0;
356 inst_mad->U.I.SrcReg[1].File = RC_FILE_CONSTANT;
357 inst_mad->U.I.SrcReg[1].Index = two;
358 inst_mad->U.I.SrcReg[1].Swizzle = two_swizzle;
359 inst_mad->U.I.SrcReg[2].Swizzle = RC_SWIZZLE_1111;
360 inst_mad->U.I.SrcReg[2].Negate = RC_MASK_XYZ;
361
362 inst_add = rc_insert_new_instruction(c, inst->Prev);
363
364 inst_add->U.I.Opcode = RC_OPCODE_ADD;
365 inst_add->U.I.DstReg.File = RC_FILE_TEMPORARY;
366 inst_add->U.I.DstReg.Index = temp;
367 inst_add->U.I.DstReg.WriteMask = RC_MASK_XYZ;
368 inst_add->U.I.SrcReg[0].Swizzle = RC_SWIZZLE_1111;
369 inst_add->U.I.SrcReg[1].File = RC_FILE_TEMPORARY;
370 inst_add->U.I.SrcReg[1].Index = temp;
371 inst_add->U.I.SrcReg[1].Swizzle = RC_SWIZZLE_XYZ0;
372 inst_add->U.I.SrcReg[1].Abs = 1;
373 inst_add->U.I.SrcReg[1].Negate = RC_MASK_XYZ;
374 } else if (wrapmode == RC_WRAP_MIRRORED_CLAMP) {
375 /*
376 * Mirrored clamp modes are bloody simple, we just use abs
377 * to mirror [0, 1] into [-1, 0]. This works for
378 * all modes i.e. CLAMP, CLAMP_TO_EDGE, and CLAMP_TO_BORDER.
379 */
380 struct rc_instruction *inst_mov;
381
382 inst_mov = rc_insert_new_instruction(c, inst->Prev);
383
384 inst_mov->U.I.Opcode = RC_OPCODE_MOV;
385 inst_mov->U.I.DstReg.File = RC_FILE_TEMPORARY;
386 inst_mov->U.I.DstReg.Index = temp;
387 inst_mov->U.I.DstReg.WriteMask = RC_MASK_XYZ;
388 inst_mov->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
389 inst_mov->U.I.SrcReg[0].Abs = 1;
390 }
391
392 /* Preserve W for TXP/TXB. */
393 inst_mov = rc_insert_new_instruction(c, inst->Prev);
394
395 inst_mov->U.I.Opcode = RC_OPCODE_MOV;
396 inst_mov->U.I.DstReg.File = RC_FILE_TEMPORARY;
397 inst_mov->U.I.DstReg.Index = temp;
398 inst_mov->U.I.DstReg.WriteMask = RC_MASK_W;
399 inst_mov->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
400
401 reset_srcreg(&inst->U.I.SrcReg[0]);
402 inst->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
403 inst->U.I.SrcReg[0].Index = temp;
404 }
405
406 /* NPOT -> POT conversion for 3D textures. */
407 if (inst->U.I.Opcode != RC_OPCODE_KIL &&
408 compiler->state.unit[inst->U.I.TexSrcUnit].clamp_and_scale_before_fetch) {
409 struct rc_instruction *inst_mov;
410 unsigned temp = rc_find_free_temporary(c);
411
412 /* Saturate XYZ. */
413 inst_mov = rc_insert_new_instruction(c, inst->Prev);
414 inst_mov->U.I.Opcode = RC_OPCODE_MOV;
415 inst_mov->U.I.SaturateMode = RC_SATURATE_ZERO_ONE;
416 inst_mov->U.I.DstReg.File = RC_FILE_TEMPORARY;
417 inst_mov->U.I.DstReg.Index = temp;
418 inst_mov->U.I.DstReg.WriteMask = RC_MASK_XYZ;
419 inst_mov->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
420
421 /* Copy W. */
422 inst_mov = rc_insert_new_instruction(c, inst->Prev);
423 inst_mov->U.I.Opcode = RC_OPCODE_MOV;
424 inst_mov->U.I.DstReg.File = RC_FILE_TEMPORARY;
425 inst_mov->U.I.DstReg.Index = temp;
426 inst_mov->U.I.DstReg.WriteMask = RC_MASK_W;
427 inst_mov->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
428
429 reset_srcreg(&inst->U.I.SrcReg[0]);
430 inst->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
431 inst->U.I.SrcReg[0].Index = temp;
432
433 scale_texcoords(compiler, inst, RC_STATE_R300_TEXSCALE_FACTOR);
434 }
435
436 /* Cannot write texture to output registers or with saturate (all chips),
437 * or with masks (non-r500). */
438 if (inst->U.I.Opcode != RC_OPCODE_KIL &&
439 (inst->U.I.DstReg.File != RC_FILE_TEMPORARY ||
440 inst->U.I.SaturateMode ||
441 (!c->is_r500 && inst->U.I.DstReg.WriteMask != RC_MASK_XYZW))) {
442 struct rc_instruction * inst_mov = rc_insert_new_instruction(c, inst);
443
444 inst_mov->U.I.Opcode = RC_OPCODE_MOV;
445 inst_mov->U.I.SaturateMode = inst->U.I.SaturateMode;
446 inst_mov->U.I.DstReg = inst->U.I.DstReg;
447 inst_mov->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
448 inst_mov->U.I.SrcReg[0].Index = rc_find_free_temporary(c);
449
450 inst->U.I.SaturateMode = 0;
451 inst->U.I.DstReg.File = RC_FILE_TEMPORARY;
452 inst->U.I.DstReg.Index = inst_mov->U.I.SrcReg[0].Index;
453 inst->U.I.DstReg.WriteMask = RC_MASK_XYZW;
454 }
455
456 /* Cannot read texture coordinate from constants file */
457 if (inst->U.I.SrcReg[0].File != RC_FILE_TEMPORARY && inst->U.I.SrcReg[0].File != RC_FILE_INPUT) {
458 struct rc_instruction * inst_mov = rc_insert_new_instruction(c, inst->Prev);
459
460 inst_mov->U.I.Opcode = RC_OPCODE_MOV;
461 inst_mov->U.I.DstReg.File = RC_FILE_TEMPORARY;
462 inst_mov->U.I.DstReg.Index = rc_find_free_temporary(c);
463 inst_mov->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
464
465 reset_srcreg(&inst->U.I.SrcReg[0]);
466 inst->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
467 inst->U.I.SrcReg[0].Index = inst_mov->U.I.DstReg.Index;
468 }
469
470 return 1;
471 }
472