1 /**************************************************************************
3 * Copyright 2003 VMware, Inc.
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 VMWARE 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 **************************************************************************/
30 #include "main/glheader.h"
31 #include "main/macros.h"
32 #include "main/enums.h"
34 #include "tnl/t_context.h"
35 #include "intel_batchbuffer.h"
38 #include "i915_context.h"
39 #include "i915_program.h"
42 #define A0_DEST( reg ) (((reg)&UREG_TYPE_NR_MASK)>>UREG_A0_DEST_SHIFT_LEFT)
43 #define D0_DEST( reg ) (((reg)&UREG_TYPE_NR_MASK)>>UREG_A0_DEST_SHIFT_LEFT)
44 #define T0_DEST( reg ) (((reg)&UREG_TYPE_NR_MASK)>>UREG_A0_DEST_SHIFT_LEFT)
45 #define A0_SRC0( reg ) (((reg)&UREG_MASK)>>UREG_A0_SRC0_SHIFT_LEFT)
46 #define A1_SRC0( reg ) (((reg)&UREG_MASK)<<UREG_A1_SRC0_SHIFT_RIGHT)
47 #define A1_SRC1( reg ) (((reg)&UREG_MASK)>>UREG_A1_SRC1_SHIFT_LEFT)
48 #define A2_SRC1( reg ) (((reg)&UREG_MASK)<<UREG_A2_SRC1_SHIFT_RIGHT)
49 #define A2_SRC2( reg ) (((reg)&UREG_MASK)>>UREG_A2_SRC2_SHIFT_LEFT)
51 /* These are special, and don't have swizzle/negate bits.
53 #define T0_SAMPLER( reg ) (GET_UREG_NR(reg)<<T0_SAMPLER_NR_SHIFT)
54 #define T1_ADDRESS_REG( reg ) ((GET_UREG_NR(reg)<<T1_ADDRESS_REG_NR_SHIFT) | \
55 (GET_UREG_TYPE(reg)<<T1_ADDRESS_REG_TYPE_SHIFT))
58 /* Macros for translating UREG's into the various register fields used
59 * by the I915 programmable unit.
61 #define UREG_A0_DEST_SHIFT_LEFT (UREG_TYPE_SHIFT - A0_DEST_TYPE_SHIFT)
62 #define UREG_A0_SRC0_SHIFT_LEFT (UREG_TYPE_SHIFT - A0_SRC0_TYPE_SHIFT)
63 #define UREG_A1_SRC0_SHIFT_RIGHT (A1_SRC0_CHANNEL_W_SHIFT - UREG_CHANNEL_W_SHIFT)
64 #define UREG_A1_SRC1_SHIFT_LEFT (UREG_TYPE_SHIFT - A1_SRC1_TYPE_SHIFT)
65 #define UREG_A2_SRC1_SHIFT_RIGHT (A2_SRC1_CHANNEL_W_SHIFT - UREG_CHANNEL_W_SHIFT)
66 #define UREG_A2_SRC2_SHIFT_LEFT (UREG_TYPE_SHIFT - A2_SRC2_TYPE_SHIFT)
68 #define UREG_MASK 0xffffff00
69 #define UREG_TYPE_NR_MASK ((REG_TYPE_MASK << UREG_TYPE_SHIFT) | \
70 (REG_NR_MASK << UREG_NR_SHIFT))
73 #define I915_CONSTFLAG_PARAM 0x1f
76 i915_get_temp(struct i915_fragment_program *p)
78 int bit = ffs(~p->temp_flag);
80 fprintf(stderr, "%s: out of temporaries\n", __FILE__);
84 p->temp_flag |= 1 << (bit - 1);
85 return UREG(REG_TYPE_R, (bit - 1));
90 i915_get_utemp(struct i915_fragment_program * p)
92 int bit = ffs(~p->utemp_flag);
94 fprintf(stderr, "%s: out of temporaries\n", __FILE__);
98 p->utemp_flag |= 1 << (bit - 1);
99 return UREG(REG_TYPE_U, (bit - 1));
103 i915_release_utemps(struct i915_fragment_program *p)
105 p->utemp_flag = ~0x7;
110 i915_emit_decl(struct i915_fragment_program *p,
111 GLuint type, GLuint nr, GLuint d0_flags)
113 GLuint reg = UREG(type, nr);
115 if (type == REG_TYPE_T) {
116 if (p->decl_t & (1 << nr))
119 p->decl_t |= (1 << nr);
121 else if (type == REG_TYPE_S) {
122 if (p->decl_s & (1 << nr))
125 p->decl_s |= (1 << nr);
130 *(p->decl++) = (D0_DCL | D0_DEST(reg) | d0_flags);
131 *(p->decl++) = D1_MBZ;
132 *(p->decl++) = D2_MBZ;
133 assert(p->decl <= p->declarations + ARRAY_SIZE(p->declarations));
140 i915_emit_arith(struct i915_fragment_program * p,
144 GLuint saturate, GLuint src0, GLuint src1, GLuint src2)
149 assert(GET_UREG_TYPE(dest) != REG_TYPE_CONST);
150 dest = UREG(GET_UREG_TYPE(dest), GET_UREG_NR(dest));
153 if (GET_UREG_TYPE(src0) == REG_TYPE_CONST)
155 if (GET_UREG_TYPE(src1) == REG_TYPE_CONST)
157 if (GET_UREG_TYPE(src2) == REG_TYPE_CONST)
160 /* Recursively call this function to MOV additional const values
161 * into temporary registers. Use utemp registers for this -
162 * currently shouldn't be possible to run out, but keep an eye on
166 GLuint s[3], first, i, old_utemp_flag;
171 old_utemp_flag = p->utemp_flag;
173 first = GET_UREG_NR(s[c[0]]);
174 for (i = 1; i < nr_const; i++) {
175 if (GET_UREG_NR(s[c[i]]) != first) {
176 GLuint tmp = i915_get_utemp(p);
178 i915_emit_arith(p, A0_MOV, tmp, A0_DEST_CHANNEL_ALL, 0,
187 p->utemp_flag = old_utemp_flag; /* restore */
190 if (p->csr >= p->program + ARRAY_SIZE(p->program)) {
191 i915_program_error(p, "Program contains too many instructions");
195 *(p->csr++) = (op | A0_DEST(dest) | mask | saturate | A0_SRC0(src0));
196 *(p->csr++) = (A1_SRC0(src0) | A1_SRC1(src1));
197 *(p->csr++) = (A2_SRC1(src1) | A2_SRC2(src2));
199 if (GET_UREG_TYPE(dest) == REG_TYPE_R)
200 p->register_phases[GET_UREG_NR(dest)] = p->nr_tex_indirect;
206 static GLuint get_free_rreg (struct i915_fragment_program *p,
209 int bit = ffs(~live_regs);
211 i915_program_error(p, "Can't find free R reg");
214 return UREG(REG_TYPE_R, bit - 1);
217 GLuint i915_emit_texld( struct i915_fragment_program *p,
225 if (coord != UREG(GET_UREG_TYPE(coord), GET_UREG_NR(coord))) {
226 /* With the help of the "needed registers" table created earlier, pick
227 * a register we can MOV the swizzled TC to (since TEX doesn't support
228 * swizzled sources) */
229 GLuint swizCoord = get_free_rreg(p, live_regs);
230 if (swizCoord == UREG_BAD)
233 i915_emit_arith( p, A0_MOV, swizCoord, A0_DEST_CHANNEL_ALL, 0, coord, 0, 0 );
237 /* Don't worry about saturate as we only support texture formats
238 * that are always in the 0..1 range.
240 if (destmask != A0_DEST_CHANNEL_ALL) {
241 GLuint tmp = i915_get_utemp(p);
242 i915_emit_texld( p, 0, tmp, A0_DEST_CHANNEL_ALL, sampler, coord, op );
243 i915_emit_arith( p, A0_MOV, dest, destmask, 0, tmp, 0, 0 );
247 assert(GET_UREG_TYPE(dest) != REG_TYPE_CONST);
248 assert(dest == UREG(GET_UREG_TYPE(dest), GET_UREG_NR(dest)));
249 /* Can't use unsaved temps for coords, as the phase boundary would result
250 * in the contents becoming undefined.
252 assert(GET_UREG_TYPE(coord) != REG_TYPE_U);
254 if ((GET_UREG_TYPE(coord) != REG_TYPE_R) &&
255 (GET_UREG_TYPE(coord) != REG_TYPE_OC) &&
256 (GET_UREG_TYPE(coord) != REG_TYPE_OD) &&
257 (GET_UREG_TYPE(coord) != REG_TYPE_T)) {
258 GLuint tmpCoord = get_free_rreg(p, live_regs);
260 if (tmpCoord == UREG_BAD)
263 i915_emit_arith(p, A0_MOV, tmpCoord, A0_DEST_CHANNEL_ALL, 0, coord, 0, 0);
267 /* Output register being oC or oD defines a phase boundary */
268 if (GET_UREG_TYPE(dest) == REG_TYPE_OC ||
269 GET_UREG_TYPE(dest) == REG_TYPE_OD)
270 p->nr_tex_indirect++;
272 /* Reading from an r# register whose contents depend on output of the
273 * current phase defines a phase boundary.
275 if (GET_UREG_TYPE(coord) == REG_TYPE_R &&
276 p->register_phases[GET_UREG_NR(coord)] == p->nr_tex_indirect)
277 p->nr_tex_indirect++;
279 if (p->csr >= p->program + ARRAY_SIZE(p->program)) {
280 i915_program_error(p, "Program contains too many instructions");
286 T0_SAMPLER( sampler ));
288 *(p->csr++) = T1_ADDRESS_REG( coord );
289 *(p->csr++) = T2_MBZ;
291 if (GET_UREG_TYPE(dest) == REG_TYPE_R)
292 p->register_phases[GET_UREG_NR(dest)] = p->nr_tex_indirect;
301 i915_emit_const1f(struct i915_fragment_program * p, GLfloat c0)
306 return swizzle(UREG(REG_TYPE_R, 0), ZERO, ZERO, ZERO, ZERO);
308 return swizzle(UREG(REG_TYPE_R, 0), ONE, ONE, ONE, ONE);
310 for (reg = 0; reg < I915_MAX_CONSTANT; reg++) {
311 if (p->constant_flags[reg] == I915_CONSTFLAG_PARAM)
313 for (idx = 0; idx < 4; idx++) {
314 if (!(p->constant_flags[reg] & (1 << idx)) ||
315 p->constant[reg][idx] == c0) {
316 p->constant[reg][idx] = c0;
317 p->constant_flags[reg] |= 1 << idx;
318 if (reg + 1 > p->nr_constants)
319 p->nr_constants = reg + 1;
320 return swizzle(UREG(REG_TYPE_CONST, reg), idx, ZERO, ZERO, ONE);
325 fprintf(stderr, "%s: out of constants\n", __func__);
331 i915_emit_const2f(struct i915_fragment_program * p, GLfloat c0, GLfloat c1)
336 return swizzle(i915_emit_const1f(p, c1), ZERO, X, Z, W);
338 return swizzle(i915_emit_const1f(p, c1), ONE, X, Z, W);
341 return swizzle(i915_emit_const1f(p, c0), X, ZERO, Z, W);
343 return swizzle(i915_emit_const1f(p, c0), X, ONE, Z, W);
345 for (reg = 0; reg < I915_MAX_CONSTANT; reg++) {
346 if (p->constant_flags[reg] == 0xf ||
347 p->constant_flags[reg] == I915_CONSTFLAG_PARAM)
349 for (idx = 0; idx < 3; idx++) {
350 if (!(p->constant_flags[reg] & (3 << idx))) {
351 p->constant[reg][idx] = c0;
352 p->constant[reg][idx + 1] = c1;
353 p->constant_flags[reg] |= 3 << idx;
354 if (reg + 1 > p->nr_constants)
355 p->nr_constants = reg + 1;
356 return swizzle(UREG(REG_TYPE_CONST, reg), idx, idx + 1, ZERO,
362 fprintf(stderr, "%s: out of constants\n", __func__);
370 i915_emit_const4f(struct i915_fragment_program * p,
371 GLfloat c0, GLfloat c1, GLfloat c2, GLfloat c3)
375 for (reg = 0; reg < I915_MAX_CONSTANT; reg++) {
376 if (p->constant_flags[reg] == 0xf &&
377 p->constant[reg][0] == c0 &&
378 p->constant[reg][1] == c1 &&
379 p->constant[reg][2] == c2 && p->constant[reg][3] == c3) {
380 return UREG(REG_TYPE_CONST, reg);
382 else if (p->constant_flags[reg] == 0) {
383 p->constant[reg][0] = c0;
384 p->constant[reg][1] = c1;
385 p->constant[reg][2] = c2;
386 p->constant[reg][3] = c3;
387 p->constant_flags[reg] = 0xf;
388 if (reg + 1 > p->nr_constants)
389 p->nr_constants = reg + 1;
390 return UREG(REG_TYPE_CONST, reg);
394 fprintf(stderr, "%s: out of constants\n", __func__);
401 i915_emit_const4fv(struct i915_fragment_program * p, const GLfloat * c)
403 return i915_emit_const4f(p, c[0], c[1], c[2], c[3]);
408 i915_emit_param4fv(struct i915_fragment_program * p, const GLfloat * values)
412 for (i = 0; i < p->nr_params; i++) {
413 if (p->param[i].values == values)
414 return UREG(REG_TYPE_CONST, p->param[i].reg);
418 for (reg = 0; reg < I915_MAX_CONSTANT; reg++) {
419 if (p->constant_flags[reg] == 0) {
420 p->constant_flags[reg] = I915_CONSTFLAG_PARAM;
423 p->param[i].values = values;
424 p->param[i].reg = reg;
425 p->params_uptodate = 0;
427 if (reg + 1 > p->nr_constants)
428 p->nr_constants = reg + 1;
429 return UREG(REG_TYPE_CONST, reg);
433 fprintf(stderr, "%s: out of constants\n", __func__);
438 /* Warning the user about program errors seems to be quite valuable, from
439 * our bug reports. It unfortunately means piglit reporting errors
440 * when we fall back to software due to an unsupportable program, though.
443 i915_program_error(struct i915_fragment_program *p, const char *fmt, ...)
445 if (unlikely((INTEL_DEBUG & (DEBUG_WM | DEBUG_PERF)) != 0)) {
448 fprintf(stderr, "i915_program_error: ");
450 vfprintf(stderr, fmt, args);
453 fprintf(stderr, "\n");
460 i915_init_program(struct i915_context *i915, struct i915_fragment_program *p)
462 struct gl_context *ctx = &i915->intel.ctx;
465 p->params_uptodate = 0;
469 memset(&p->register_phases, 0, sizeof(p->register_phases));
470 p->nr_tex_indirect = 1;
476 memset(p->constant_flags, 0, sizeof(p->constant_flags));
480 p->decl = p->declarations;
483 p->temp_flag = 0xffff000;
484 p->utemp_flag = ~0x7;
486 p->depth_written = 0;
489 *(p->decl++) = _3DSTATE_PIXEL_SHADER_PROGRAM;
494 i915_fini_program(struct i915_fragment_program *p)
496 GLuint program_size = p->csr - p->program;
497 GLuint decl_size = p->decl - p->declarations;
499 if (p->nr_tex_indirect > I915_MAX_TEX_INDIRECT) {
500 i915_program_error(p, "Exceeded max nr indirect texture lookups "
502 p->nr_tex_indirect, I915_MAX_TEX_INDIRECT);
505 if (p->nr_tex_insn > I915_MAX_TEX_INSN) {
506 i915_program_error(p, "Exceeded max TEX instructions (%d out of %d)",
507 p->nr_tex_insn, I915_MAX_TEX_INSN);
510 if (p->nr_alu_insn > I915_MAX_ALU_INSN)
511 i915_program_error(p, "Exceeded max ALU instructions (%d out of %d)",
512 p->nr_alu_insn, I915_MAX_ALU_INSN);
514 if (p->nr_decl_insn > I915_MAX_DECL_INSN) {
515 i915_program_error(p, "Exceeded max DECL instructions (%d out of %d)",
516 p->nr_decl_insn, I915_MAX_DECL_INSN);
520 p->FragProg.Base.NumNativeInstructions = 0;
521 p->FragProg.Base.NumNativeAluInstructions = 0;
522 p->FragProg.Base.NumNativeTexInstructions = 0;
523 p->FragProg.Base.NumNativeTexIndirections = 0;
526 p->FragProg.Base.NumNativeInstructions = (p->nr_alu_insn +
529 p->FragProg.Base.NumNativeAluInstructions = p->nr_alu_insn;
530 p->FragProg.Base.NumNativeTexInstructions = p->nr_tex_insn;
531 p->FragProg.Base.NumNativeTexIndirections = p->nr_tex_indirect;
534 p->declarations[0] |= program_size + decl_size - 2;
538 i915_upload_program(struct i915_context *i915,
539 struct i915_fragment_program *p)
541 GLuint program_size = p->csr - p->program;
542 GLuint decl_size = p->decl - p->declarations;
547 /* Could just go straight to the batchbuffer from here:
549 if (i915->state.ProgramSize != (program_size + decl_size) ||
550 memcmp(i915->state.Program + decl_size, p->program,
551 program_size * sizeof(int)) != 0) {
552 I915_STATECHANGE(i915, I915_UPLOAD_PROGRAM);
553 memcpy(i915->state.Program, p->declarations, decl_size * sizeof(int));
554 memcpy(i915->state.Program + decl_size, p->program,
555 program_size * sizeof(int));
556 i915->state.ProgramSize = decl_size + program_size;
559 /* Always seemed to get a failure if I used memcmp() to
560 * shortcircuit this state upload. Needs further investigation?
562 if (p->nr_constants) {
563 GLuint nr = p->nr_constants;
565 I915_ACTIVESTATE(i915, I915_UPLOAD_CONSTANTS, 1);
566 I915_STATECHANGE(i915, I915_UPLOAD_CONSTANTS);
568 i915->state.Constant[0] = _3DSTATE_PIXEL_SHADER_CONSTANTS | ((nr) * 4);
569 i915->state.Constant[1] = (1 << (nr - 1)) | ((1 << (nr - 1)) - 1);
571 memcpy(&i915->state.Constant[2], p->constant, 4 * sizeof(int) * (nr));
572 i915->state.ConstantSize = 2 + (nr) * 4;
576 for (i = 0; i < nr; i++) {
577 fprintf(stderr, "const[%d]: %f %f %f %f\n", i,
579 p->constant[i][1], p->constant[i][2], p->constant[i][3]);
584 I915_ACTIVESTATE(i915, I915_UPLOAD_CONSTANTS, 0);