2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2003 Brian Paul All Rights Reserved.
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:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
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.
29 #include "nvfragprog.h"
32 #include "s_nvfragprog.h"
34 #include "s_texture.h"
37 /* if 1, print some debugging info */
45 fetch_texel( GLcontext
*ctx
, const GLfloat texcoord
[4], GLfloat lambda
,
46 GLuint unit
, GLfloat color
[4] )
49 SWcontext
*swrast
= SWRAST_CONTEXT(ctx
);
51 swrast
->TextureSample
[unit
](ctx
, unit
, ctx
->Texture
.Unit
[unit
]._Current
,
52 1, (const GLfloat (*)[4]) texcoord
,
54 color
[0] = CHAN_TO_FLOAT(rgba
[0]);
55 color
[1] = CHAN_TO_FLOAT(rgba
[1]);
56 color
[2] = CHAN_TO_FLOAT(rgba
[2]);
57 color
[3] = CHAN_TO_FLOAT(rgba
[3]);
62 * Fetch a texel with the given partial derivatives to compute a level
63 * of detail in the mipmap.
66 fetch_texel_deriv( GLcontext
*ctx
, const GLfloat texcoord
[4],
67 const GLfloat texdx
[4], const GLfloat texdy
[4],
68 GLuint unit
, GLfloat color
[4] )
70 SWcontext
*swrast
= SWRAST_CONTEXT(ctx
);
71 const struct gl_texture_object
*texObj
= ctx
->Texture
.Unit
[unit
]._Current
;
72 const struct gl_texture_image
*texImg
= texObj
->Image
[texObj
->BaseLevel
];
73 const GLfloat texW
= (GLfloat
) texImg
->WidthScale
;
74 const GLfloat texH
= (GLfloat
) texImg
->HeightScale
;
77 GLfloat lambda
= _swrast_compute_lambda(texdx
[0], texdy
[0], /* ds/dx, ds/dy */
78 texdx
[1], texdy
[1], /* dt/dx, dt/dy */
79 texdx
[3], texdy
[2], /* dq/dx, dq/dy */
81 texcoord
[0], texcoord
[1], texcoord
[3],
84 swrast
->TextureSample
[unit
](ctx
, unit
, ctx
->Texture
.Unit
[unit
]._Current
,
85 1, (const GLfloat (*)[4]) texcoord
,
87 color
[0] = CHAN_TO_FLOAT(rgba
[0]);
88 color
[1] = CHAN_TO_FLOAT(rgba
[1]);
89 color
[2] = CHAN_TO_FLOAT(rgba
[2]);
90 color
[3] = CHAN_TO_FLOAT(rgba
[3]);
96 * Fetch a 4-element float vector from the given source register.
97 * Apply swizzling and negating as needed.
100 fetch_vector4( GLcontext
*ctx
,
101 const struct fp_src_register
*source
,
102 struct fp_machine
*machine
,
103 const struct fragment_program
*program
,
108 switch (source
->File
) {
109 case PROGRAM_TEMPORARY
:
110 ASSERT(source
->Index
< MAX_NV_FRAGMENT_PROGRAM_TEMPS
);
111 src
= machine
->Temporaries
[source
->Index
];
114 ASSERT(source
->Index
< MAX_NV_FRAGMENT_PROGRAM_INPUTS
);
115 src
= machine
->Inputs
[source
->Index
];
117 case PROGRAM_LOCAL_PARAM
:
118 ASSERT(source
->Index
< MAX_PROGRAM_LOCAL_PARAMS
);
119 src
= program
->Base
.LocalParams
[source
->Index
];
121 case PROGRAM_ENV_PARAM
:
122 ASSERT(source
->Index
< MAX_NV_FRAGMENT_PROGRAM_PARAMS
);
123 src
= ctx
->FragmentProgram
.Parameters
[source
->Index
];
125 case PROGRAM_NAMED_PARAM
:
126 ASSERT(source
->Index
< program
->NumParameters
);
127 src
= program
->Parameters
[source
->Index
].Values
;
129 case PROGRAM_STATE_VAR
:
132 _mesa_problem(ctx
, "Invalid input register file in fetch_vector4");
136 result
[0] = src
[source
->Swizzle
[0]];
137 result
[1] = src
[source
->Swizzle
[1]];
138 result
[2] = src
[source
->Swizzle
[2]];
139 result
[3] = src
[source
->Swizzle
[3]];
141 if (source
->NegateBase
) {
142 result
[0] = -result
[0];
143 result
[1] = -result
[1];
144 result
[2] = -result
[2];
145 result
[3] = -result
[3];
148 result
[0] = FABSF(result
[0]);
149 result
[1] = FABSF(result
[1]);
150 result
[2] = FABSF(result
[2]);
151 result
[3] = FABSF(result
[3]);
153 if (source
->NegateAbs
) {
154 result
[0] = -result
[0];
155 result
[1] = -result
[1];
156 result
[2] = -result
[2];
157 result
[3] = -result
[3];
163 * Fetch the derivative with respect to X for the given register.
164 * \return GL_TRUE if it was easily computed or GL_FALSE if we
165 * need to execute another instance of the program (ugh)!
168 fetch_vector4_deriv( const struct fp_src_register
*source
,
169 const struct sw_span
*span
,
170 char xOrY
, GLfloat result
[4] )
174 ASSERT(xOrY
== 'X' || xOrY
== 'Y');
176 assert(source
->File
== PROGRAM_INPUT
);
178 switch (source
->Index
) {
179 case FRAG_ATTRIB_WPOS
:
193 case FRAG_ATTRIB_COL0
:
195 src
[0] = span
->drdx
* (1.0F
/ CHAN_MAXF
);
196 src
[1] = span
->dgdx
* (1.0F
/ CHAN_MAXF
);
197 src
[2] = span
->dbdx
* (1.0F
/ CHAN_MAXF
);
198 src
[3] = span
->dadx
* (1.0F
/ CHAN_MAXF
);
201 src
[0] = span
->drdy
* (1.0F
/ CHAN_MAXF
);
202 src
[1] = span
->dgdy
* (1.0F
/ CHAN_MAXF
);
203 src
[2] = span
->dbdy
* (1.0F
/ CHAN_MAXF
);
204 src
[3] = span
->dady
* (1.0F
/ CHAN_MAXF
);
207 case FRAG_ATTRIB_COL1
:
209 src
[0] = span
->dsrdx
* (1.0F
/ CHAN_MAXF
);
210 src
[1] = span
->dsgdx
* (1.0F
/ CHAN_MAXF
);
211 src
[2] = span
->dsbdx
* (1.0F
/ CHAN_MAXF
);
212 src
[3] = 0.0; /* XXX need this */
215 src
[0] = span
->dsrdy
* (1.0F
/ CHAN_MAXF
);
216 src
[1] = span
->dsgdy
* (1.0F
/ CHAN_MAXF
);
217 src
[2] = span
->dsbdy
* (1.0F
/ CHAN_MAXF
);
218 src
[3] = 0.0; /* XXX need this */
221 case FRAG_ATTRIB_FOGC
:
223 src
[0] = span
->dfogdx
;
229 src
[0] = span
->dfogdy
;
235 case FRAG_ATTRIB_TEX0
:
236 case FRAG_ATTRIB_TEX1
:
237 case FRAG_ATTRIB_TEX2
:
238 case FRAG_ATTRIB_TEX3
:
239 case FRAG_ATTRIB_TEX4
:
240 case FRAG_ATTRIB_TEX5
:
241 case FRAG_ATTRIB_TEX6
:
242 case FRAG_ATTRIB_TEX7
:
244 const GLuint u
= source
->Index
- FRAG_ATTRIB_TEX0
;
245 src
[0] = span
->texStepX
[u
][0] * (1.0F
/ CHAN_MAXF
);
246 src
[1] = span
->texStepX
[u
][1] * (1.0F
/ CHAN_MAXF
);
247 src
[2] = span
->texStepX
[u
][2] * (1.0F
/ CHAN_MAXF
);
248 src
[3] = span
->texStepX
[u
][3] * (1.0F
/ CHAN_MAXF
);
251 const GLuint u
= source
->Index
- FRAG_ATTRIB_TEX0
;
252 src
[0] = span
->texStepY
[u
][0] * (1.0F
/ CHAN_MAXF
);
253 src
[1] = span
->texStepY
[u
][1] * (1.0F
/ CHAN_MAXF
);
254 src
[2] = span
->texStepY
[u
][2] * (1.0F
/ CHAN_MAXF
);
255 src
[3] = span
->texStepY
[u
][3] * (1.0F
/ CHAN_MAXF
);
262 result
[0] = src
[source
->Swizzle
[0]];
263 result
[1] = src
[source
->Swizzle
[1]];
264 result
[2] = src
[source
->Swizzle
[2]];
265 result
[3] = src
[source
->Swizzle
[3]];
267 if (source
->NegateBase
) {
268 result
[0] = -result
[0];
269 result
[1] = -result
[1];
270 result
[2] = -result
[2];
271 result
[3] = -result
[3];
274 result
[0] = FABSF(result
[0]);
275 result
[1] = FABSF(result
[1]);
276 result
[2] = FABSF(result
[2]);
277 result
[3] = FABSF(result
[3]);
279 if (source
->NegateAbs
) {
280 result
[0] = -result
[0];
281 result
[1] = -result
[1];
282 result
[2] = -result
[2];
283 result
[3] = -result
[3];
290 * As above, but only return result[0] element.
293 fetch_vector1( GLcontext
*ctx
,
294 const struct fp_src_register
*source
,
295 const struct fp_machine
*machine
,
296 const struct fragment_program
*program
,
301 switch (source
->File
) {
302 case PROGRAM_TEMPORARY
:
303 ASSERT(source
->Index
< MAX_NV_FRAGMENT_PROGRAM_TEMPS
);
304 src
= machine
->Temporaries
[source
->Index
];
307 ASSERT(source
->Index
< MAX_NV_FRAGMENT_PROGRAM_INPUTS
);
308 src
= machine
->Inputs
[source
->Index
];
310 case PROGRAM_LOCAL_PARAM
:
311 ASSERT(source
->Index
< MAX_PROGRAM_LOCAL_PARAMS
);
312 src
= program
->Base
.LocalParams
[source
->Index
];
314 case PROGRAM_ENV_PARAM
:
315 ASSERT(source
->Index
< MAX_NV_FRAGMENT_PROGRAM_PARAMS
);
316 src
= ctx
->FragmentProgram
.Parameters
[source
->Index
];
318 case PROGRAM_NAMED_PARAM
:
319 ASSERT(source
->Index
< program
->NumParameters
);
320 src
= program
->Parameters
[source
->Index
].Values
;
322 case PROGRAM_STATE_VAR
:
325 _mesa_problem(ctx
, "Invalid input register file in fetch_vector1");
329 result
[0] = src
[source
->Swizzle
[0]];
331 if (source
->NegateBase
) {
332 result
[0] = -result
[0];
335 result
[0] = FABSF(result
[0]);
337 if (source
->NegateAbs
) {
338 result
[0] = -result
[0];
344 * Test value against zero and return GT, LT, EQ or UN if NaN.
347 generate_cc( float value
)
350 return COND_UN
; /* NaN */
359 * Test if the ccMaskRule is satisfied by the given condition code.
360 * Used to mask destination writes according to the current condition codee.
362 static INLINE GLboolean
363 test_cc(GLuint condCode
, GLuint ccMaskRule
)
365 switch (ccMaskRule
) {
366 case COND_EQ
: return (condCode
== COND_EQ
);
367 case COND_NE
: return (condCode
!= COND_EQ
);
368 case COND_LT
: return (condCode
== COND_LT
);
369 case COND_GE
: return (condCode
== COND_GT
|| condCode
== COND_EQ
);
370 case COND_LE
: return (condCode
== COND_LT
|| condCode
== COND_EQ
);
371 case COND_GT
: return (condCode
== COND_GT
);
372 case COND_TR
: return GL_TRUE
;
373 case COND_FL
: return GL_FALSE
;
374 default: return GL_TRUE
;
380 * Store 4 floats into a register. Observe the instructions saturate and
381 * set-condition-code flags.
384 store_vector4( const struct fp_instruction
*inst
,
385 struct fp_machine
*machine
,
386 const GLfloat value
[4] )
388 const struct fp_dst_register
*dest
= &(inst
->DstReg
);
389 const GLboolean clamp
= inst
->Saturate
;
390 const GLboolean updateCC
= inst
->UpdateCondRegister
;
392 GLfloat clampedValue
[4];
393 const GLboolean
*writeMask
= dest
->WriteMask
;
394 GLboolean condWriteMask
[4];
396 switch (dest
->File
) {
398 dstReg
= machine
->Outputs
[dest
->Index
];
400 case PROGRAM_TEMPORARY
:
401 dstReg
= machine
->Temporaries
[dest
->Index
];
404 _mesa_problem(NULL
, "bad register file in store_vector4(fp)");
409 if (value
[0] > 1.0e10
||
410 IS_INF_OR_NAN(value
[0]) ||
411 IS_INF_OR_NAN(value
[1]) ||
412 IS_INF_OR_NAN(value
[2]) ||
413 IS_INF_OR_NAN(value
[3]) )
414 printf("store %g %g %g %g\n", value
[0], value
[1], value
[2], value
[3]);
418 clampedValue
[0] = CLAMP(value
[0], 0.0F
, 1.0F
);
419 clampedValue
[1] = CLAMP(value
[1], 0.0F
, 1.0F
);
420 clampedValue
[2] = CLAMP(value
[2], 0.0F
, 1.0F
);
421 clampedValue
[3] = CLAMP(value
[3], 0.0F
, 1.0F
);
422 value
= clampedValue
;
425 if (dest
->CondMask
!= COND_TR
) {
426 condWriteMask
[0] = writeMask
[0]
427 && test_cc(machine
->CondCodes
[dest
->CondSwizzle
[0]], dest
->CondMask
);
428 condWriteMask
[1] = writeMask
[1]
429 && test_cc(machine
->CondCodes
[dest
->CondSwizzle
[1]], dest
->CondMask
);
430 condWriteMask
[2] = writeMask
[2]
431 && test_cc(machine
->CondCodes
[dest
->CondSwizzle
[2]], dest
->CondMask
);
432 condWriteMask
[3] = writeMask
[3]
433 && test_cc(machine
->CondCodes
[dest
->CondSwizzle
[3]], dest
->CondMask
);
434 writeMask
= condWriteMask
;
438 dstReg
[0] = value
[0];
440 machine
->CondCodes
[0] = generate_cc(value
[0]);
443 dstReg
[1] = value
[1];
445 machine
->CondCodes
[1] = generate_cc(value
[1]);
448 dstReg
[2] = value
[2];
450 machine
->CondCodes
[2] = generate_cc(value
[2]);
453 dstReg
[3] = value
[3];
455 machine
->CondCodes
[3] = generate_cc(value
[3]);
461 * Initialize a new machine state instance from an existing one, adding
462 * the partial derivatives onto the input registers.
463 * Used to implement DDX and DDY instructions in non-trivial cases.
466 init_machine_deriv( GLcontext
*ctx
,
467 const struct fp_machine
*machine
,
468 const struct fragment_program
*program
,
469 const struct sw_span
*span
, char xOrY
,
470 struct fp_machine
*dMachine
)
474 ASSERT(xOrY
== 'X' || xOrY
== 'Y');
476 /* copy existing machine */
477 _mesa_memcpy(dMachine
, machine
, sizeof(struct fp_machine
));
479 /* Clear temporary registers */
480 _mesa_bzero( (void*) machine
->Temporaries
,
481 MAX_NV_FRAGMENT_PROGRAM_TEMPS
* 4 * sizeof(GLfloat
));
483 /* Add derivatives */
484 if (program
->InputsRead
& (1 << FRAG_ATTRIB_WPOS
)) {
485 GLfloat
*wpos
= (GLfloat
*) machine
->Inputs
[FRAG_ATTRIB_WPOS
];
489 wpos
[2] += span
->dzdx
;
490 wpos
[3] += span
->dwdx
;
495 wpos
[2] += span
->dzdy
;
496 wpos
[3] += span
->dwdy
;
499 if (program
->InputsRead
& (1 << FRAG_ATTRIB_COL0
)) {
500 GLfloat
*col0
= (GLfloat
*) machine
->Inputs
[FRAG_ATTRIB_COL0
];
502 col0
[0] += span
->drdx
* (1.0F
/ CHAN_MAXF
);
503 col0
[1] += span
->dgdx
* (1.0F
/ CHAN_MAXF
);
504 col0
[2] += span
->dbdx
* (1.0F
/ CHAN_MAXF
);
505 col0
[3] += span
->dadx
* (1.0F
/ CHAN_MAXF
);
508 col0
[0] += span
->drdy
* (1.0F
/ CHAN_MAXF
);
509 col0
[1] += span
->dgdy
* (1.0F
/ CHAN_MAXF
);
510 col0
[2] += span
->dbdy
* (1.0F
/ CHAN_MAXF
);
511 col0
[3] += span
->dady
* (1.0F
/ CHAN_MAXF
);
514 if (program
->InputsRead
& (1 << FRAG_ATTRIB_COL1
)) {
515 GLfloat
*col1
= (GLfloat
*) machine
->Inputs
[FRAG_ATTRIB_COL1
];
517 col1
[0] += span
->dsrdx
* (1.0F
/ CHAN_MAXF
);
518 col1
[1] += span
->dsgdx
* (1.0F
/ CHAN_MAXF
);
519 col1
[2] += span
->dsbdx
* (1.0F
/ CHAN_MAXF
);
520 col1
[3] += 0.0; /*XXX fix */
523 col1
[0] += span
->dsrdy
* (1.0F
/ CHAN_MAXF
);
524 col1
[1] += span
->dsgdy
* (1.0F
/ CHAN_MAXF
);
525 col1
[2] += span
->dsbdy
* (1.0F
/ CHAN_MAXF
);
526 col1
[3] += 0.0; /*XXX fix */
529 if (program
->InputsRead
& (1 << FRAG_ATTRIB_FOGC
)) {
530 GLfloat
*fogc
= (GLfloat
*) machine
->Inputs
[FRAG_ATTRIB_FOGC
];
532 fogc
[0] += span
->dfogdx
;
535 fogc
[0] += span
->dfogdy
;
538 for (u
= 0; u
< ctx
->Const
.MaxTextureCoordUnits
; u
++) {
539 if (program
->InputsRead
& (1 << (FRAG_ATTRIB_TEX0
+ u
))) {
540 GLfloat
*tex
= (GLfloat
*) machine
->Inputs
[FRAG_ATTRIB_TEX0
+ u
];
542 tex
[0] += span
->texStepX
[u
][0];
543 tex
[1] += span
->texStepX
[u
][1];
544 tex
[2] += span
->texStepX
[u
][2];
545 tex
[3] += span
->texStepX
[u
][3];
548 tex
[0] += span
->texStepY
[u
][0];
549 tex
[1] += span
->texStepY
[u
][1];
550 tex
[2] += span
->texStepY
[u
][2];
551 tex
[3] += span
->texStepY
[u
][3];
556 /* init condition codes */
557 dMachine
->CondCodes
[0] = COND_EQ
;
558 dMachine
->CondCodes
[1] = COND_EQ
;
559 dMachine
->CondCodes
[2] = COND_EQ
;
560 dMachine
->CondCodes
[3] = COND_EQ
;
565 * Execute the given vertex program.
566 * NOTE: we do everything in single-precision floating point; we don't
567 * currently observe the single/half/fixed-precision qualifiers.
568 * \param ctx - rendering context
569 * \param program - the fragment program to execute
570 * \param machine - machine state (register file)
571 * \param maxInst - max number of instructions to execute
572 * \return GL_TRUE if program completed or GL_FALSE if program executed KIL.
575 execute_program( GLcontext
*ctx
,
576 const struct fragment_program
*program
, GLuint maxInst
,
577 struct fp_machine
*machine
, const struct sw_span
*span
,
583 printf("execute fragment program --------------------\n");
586 for (pc
= 0; pc
< maxInst
; pc
++) {
587 const struct fp_instruction
*inst
= program
->Instructions
+ pc
;
589 if (ctx
->FragmentProgram
.CallbackEnabled
&&
590 ctx
->FragmentProgram
.Callback
) {
591 ctx
->FragmentProgram
.CurrentPosition
= inst
->StringPos
;
592 ctx
->FragmentProgram
.Callback(program
->Base
.Target
,
593 ctx
->FragmentProgram
.CallbackData
);
596 switch (inst
->Opcode
) {
599 GLfloat a
[4], b
[4], result
[4];
600 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
601 fetch_vector4( ctx
, &inst
->SrcReg
[1], machine
, program
, b
);
602 result
[0] = a
[0] + b
[0];
603 result
[1] = a
[1] + b
[1];
604 result
[2] = a
[2] + b
[2];
605 result
[3] = a
[3] + b
[3];
606 store_vector4( inst
, machine
, result
);
611 GLfloat a
[4], result
[4];
612 fetch_vector1( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
613 result
[0] = result
[1] = result
[2] = result
[3] = (GLfloat
)_mesa_cos(a
[0]);
614 store_vector4( inst
, machine
, result
);
617 case FP_OPCODE_DDX
: /* Partial derivative with respect to X */
619 GLfloat a
[4], aNext
[4], result
[4];
620 struct fp_machine dMachine
;
621 if (!fetch_vector4_deriv(&inst
->SrcReg
[0], span
, 'X', result
)) {
622 /* This is tricky. Make a copy of the current machine state,
623 * increment the input registers by the dx or dy partial
624 * derivatives, then re-execute the program up to the
625 * preceeding instruction, then fetch the source register.
626 * Finally, find the difference in the register values for
627 * the original and derivative runs.
629 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
630 init_machine_deriv(ctx
, machine
, program
, span
,
632 execute_program(ctx
, program
, pc
, &dMachine
, span
, column
);
633 fetch_vector4( ctx
, &inst
->SrcReg
[0], &dMachine
, program
, aNext
);
634 result
[0] = aNext
[0] - a
[0];
635 result
[1] = aNext
[1] - a
[1];
636 result
[2] = aNext
[2] - a
[2];
637 result
[3] = aNext
[3] - a
[3];
639 store_vector4( inst
, machine
, result
);
642 case FP_OPCODE_DDY
: /* Partial derivative with respect to Y */
644 GLfloat a
[4], aNext
[4], result
[4];
645 struct fp_machine dMachine
;
646 if (!fetch_vector4_deriv(&inst
->SrcReg
[0], span
, 'Y', result
)) {
647 init_machine_deriv(ctx
, machine
, program
, span
,
649 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
650 execute_program(ctx
, program
, pc
, &dMachine
, span
, column
);
651 fetch_vector4( ctx
, &inst
->SrcReg
[0], &dMachine
, program
, aNext
);
652 result
[0] = aNext
[0] - a
[0];
653 result
[1] = aNext
[1] - a
[1];
654 result
[2] = aNext
[2] - a
[2];
655 result
[3] = aNext
[3] - a
[3];
657 store_vector4( inst
, machine
, result
);
662 GLfloat a
[4], b
[4], result
[4];
663 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
664 fetch_vector4( ctx
, &inst
->SrcReg
[1], machine
, program
, b
);
665 result
[0] = result
[1] = result
[2] = result
[3] =
666 a
[0] * b
[0] + a
[1] * b
[1] + a
[2] * b
[2];
667 store_vector4( inst
, machine
, result
);
669 printf("DP3 %g = (%g %g %g) . (%g %g %g)\n",
670 result
[0], a
[0], a
[1], a
[2], b
[0], b
[1], b
[2]);
676 GLfloat a
[4], b
[4], result
[4];
677 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
678 fetch_vector4( ctx
, &inst
->SrcReg
[1], machine
, program
, b
);
679 result
[0] = result
[1] = result
[2] = result
[3] =
680 a
[0] * b
[0] + a
[1] * b
[1] + a
[2] * b
[2] + a
[3] * b
[3];
681 store_vector4( inst
, machine
, result
);
684 case FP_OPCODE_DST
: /* Distance vector */
686 GLfloat a
[4], b
[4], result
[4];
687 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
688 fetch_vector4( ctx
, &inst
->SrcReg
[1], machine
, program
, b
);
690 result
[1] = a
[1] * b
[1];
693 store_vector4( inst
, machine
, result
);
696 case FP_OPCODE_EX2
: /* Exponential base 2 */
698 GLfloat a
[4], result
[4];
699 fetch_vector1( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
700 result
[0] = result
[1] = result
[2] = result
[3] =
701 (GLfloat
) _mesa_pow(2.0, a
[0]);
702 store_vector4( inst
, machine
, result
);
707 GLfloat a
[4], result
[4];
708 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
709 result
[0] = FLOORF(a
[0]);
710 result
[1] = FLOORF(a
[1]);
711 result
[2] = FLOORF(a
[2]);
712 result
[3] = FLOORF(a
[3]);
713 store_vector4( inst
, machine
, result
);
718 GLfloat a
[4], result
[4];
719 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
720 result
[0] = a
[0] - FLOORF(a
[0]);
721 result
[1] = a
[1] - FLOORF(a
[1]);
722 result
[2] = a
[2] - FLOORF(a
[2]);
723 result
[3] = a
[3] - FLOORF(a
[3]);
724 store_vector4( inst
, machine
, result
);
729 const GLuint
*swizzle
= inst
->DstReg
.CondSwizzle
;
730 const GLuint condMask
= inst
->DstReg
.CondMask
;
731 if (test_cc(machine
->CondCodes
[swizzle
[0]], condMask
) ||
732 test_cc(machine
->CondCodes
[swizzle
[1]], condMask
) ||
733 test_cc(machine
->CondCodes
[swizzle
[2]], condMask
) ||
734 test_cc(machine
->CondCodes
[swizzle
[3]], condMask
)) {
739 case FP_OPCODE_LG2
: /* log base 2 */
741 GLfloat a
[4], result
[4];
742 fetch_vector1( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
743 result
[0] = result
[1] = result
[2] = result
[3]
745 store_vector4( inst
, machine
, result
);
750 GLfloat a
[4], result
[4];
751 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
758 result
[2] = (a
[0] > 0.0F
) ? (GLfloat
)_mesa_pow(2.0, a
[3]) : 0.0F
;
760 store_vector4( inst
, machine
, result
);
765 GLfloat a
[4], b
[4], c
[4], result
[4];
766 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
767 fetch_vector4( ctx
, &inst
->SrcReg
[1], machine
, program
, b
);
768 fetch_vector4( ctx
, &inst
->SrcReg
[2], machine
, program
, c
);
769 result
[0] = a
[0] * b
[0] + (1.0F
- a
[0]) * c
[0];
770 result
[1] = a
[1] * b
[1] + (1.0F
- a
[1]) * c
[1];
771 result
[2] = a
[2] * b
[2] + (1.0F
- a
[2]) * c
[2];
772 result
[3] = a
[3] * b
[3] + (1.0F
- a
[3]) * c
[3];
773 store_vector4( inst
, machine
, result
);
778 GLfloat a
[4], b
[4], c
[4], result
[4];
779 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
780 fetch_vector4( ctx
, &inst
->SrcReg
[1], machine
, program
, b
);
781 fetch_vector4( ctx
, &inst
->SrcReg
[2], machine
, program
, c
);
782 result
[0] = a
[0] * b
[0] + c
[0];
783 result
[1] = a
[1] * b
[1] + c
[1];
784 result
[2] = a
[2] * b
[2] + c
[2];
785 result
[3] = a
[3] * b
[3] + c
[3];
786 store_vector4( inst
, machine
, result
);
791 GLfloat a
[4], b
[4], result
[4];
792 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
793 fetch_vector4( ctx
, &inst
->SrcReg
[1], machine
, program
, b
);
794 result
[0] = MAX2(a
[0], b
[0]);
795 result
[1] = MAX2(a
[1], b
[1]);
796 result
[2] = MAX2(a
[2], b
[2]);
797 result
[3] = MAX2(a
[3], b
[3]);
798 store_vector4( inst
, machine
, result
);
803 GLfloat a
[4], b
[4], result
[4];
804 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
805 fetch_vector4( ctx
, &inst
->SrcReg
[1], machine
, program
, b
);
806 result
[0] = MIN2(a
[0], b
[0]);
807 result
[1] = MIN2(a
[1], b
[1]);
808 result
[2] = MIN2(a
[2], b
[2]);
809 result
[3] = MIN2(a
[3], b
[3]);
810 store_vector4( inst
, machine
, result
);
816 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, result
);
817 store_vector4( inst
, machine
, result
);
822 GLfloat a
[4], b
[4], result
[4];
823 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
824 fetch_vector4( ctx
, &inst
->SrcReg
[1], machine
, program
, b
);
825 result
[0] = a
[0] * b
[0];
826 result
[1] = a
[1] * b
[1];
827 result
[2] = a
[2] * b
[2];
828 result
[3] = a
[3] * b
[3];
829 store_vector4( inst
, machine
, result
);
831 printf("MUL (%g %g %g %g) = (%g %g %g %g) * (%g %g %g %g)\n",
832 result
[0], result
[1], result
[2], result
[3],
833 a
[0], a
[1], a
[2], a
[3],
834 b
[0], b
[1], b
[2], b
[3]);
838 case FP_OPCODE_PK2H
: /* pack two 16-bit floats */
839 /* XXX this is probably wrong */
841 GLfloat a
[4], result
[4];
842 const GLuint
*rawBits
= (const GLuint
*) a
;
843 GLuint
*rawResult
= (GLuint
*) result
;
844 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
845 rawResult
[0] = rawResult
[1] = rawResult
[2] = rawResult
[3]
846 = rawBits
[0] | (rawBits
[1] << 16);
847 store_vector4( inst
, machine
, result
);
850 case FP_OPCODE_PK2US
: /* pack two GLushorts */
852 GLfloat a
[4], result
[4];
853 GLuint usx
, usy
, *rawResult
= (GLuint
*) result
;
854 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
855 a
[0] = CLAMP(a
[0], 0.0F
, 1.0F
);
856 a
[1] = CLAMP(a
[0], 0.0F
, 1.0F
);
857 usx
= IROUND(a
[0] * 65535.0F
);
858 usy
= IROUND(a
[1] * 65535.0F
);
859 rawResult
[0] = rawResult
[1] = rawResult
[2] = rawResult
[3]
861 store_vector4( inst
, machine
, result
);
864 case FP_OPCODE_PK4B
: /* pack four GLbytes */
866 GLfloat a
[4], result
[4];
867 GLuint ubx
, uby
, ubz
, ubw
, *rawResult
= (GLuint
*) result
;
868 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
869 a
[0] = CLAMP(a
[0], -128.0F
/ 127.0F
, 1.0F
);
870 a
[1] = CLAMP(a
[1], -128.0F
/ 127.0F
, 1.0F
);
871 a
[2] = CLAMP(a
[2], -128.0F
/ 127.0F
, 1.0F
);
872 a
[3] = CLAMP(a
[3], -128.0F
/ 127.0F
, 1.0F
);
873 ubx
= IROUND(127.0F
* a
[0] + 128.0F
);
874 uby
= IROUND(127.0F
* a
[1] + 128.0F
);
875 ubz
= IROUND(127.0F
* a
[2] + 128.0F
);
876 ubw
= IROUND(127.0F
* a
[3] + 128.0F
);
877 rawResult
[0] = rawResult
[1] = rawResult
[2] = rawResult
[3]
878 = ubx
| (uby
<< 8) | (ubz
<< 16) | (ubw
<< 24);
879 store_vector4( inst
, machine
, result
);
882 case FP_OPCODE_PK4UB
: /* pack four GLubytes */
884 GLfloat a
[4], result
[4];
885 GLuint ubx
, uby
, ubz
, ubw
, *rawResult
= (GLuint
*) result
;
886 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
887 a
[0] = CLAMP(a
[0], 0.0F
, 1.0F
);
888 a
[1] = CLAMP(a
[1], 0.0F
, 1.0F
);
889 a
[2] = CLAMP(a
[2], 0.0F
, 1.0F
);
890 a
[3] = CLAMP(a
[3], 0.0F
, 1.0F
);
891 ubx
= IROUND(255.0F
* a
[0]);
892 uby
= IROUND(255.0F
* a
[1]);
893 ubz
= IROUND(255.0F
* a
[2]);
894 ubw
= IROUND(255.0F
* a
[3]);
895 rawResult
[0] = rawResult
[1] = rawResult
[2] = rawResult
[3]
896 = ubx
| (uby
<< 8) | (ubz
<< 16) | (ubw
<< 24);
897 store_vector4( inst
, machine
, result
);
902 GLfloat a
[4], b
[4], result
[4];
903 fetch_vector1( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
904 fetch_vector1( ctx
, &inst
->SrcReg
[1], machine
, program
, b
);
905 result
[0] = result
[1] = result
[2] = result
[3]
906 = (GLfloat
)_mesa_pow(a
[0], b
[0]);
907 store_vector4( inst
, machine
, result
);
912 GLfloat a
[4], result
[4];
913 fetch_vector1( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
917 else if (IS_INF_OR_NAN(a
[0]))
918 printf("RCP(inf)\n");
920 result
[0] = result
[1] = result
[2] = result
[3]
922 store_vector4( inst
, machine
, result
);
927 GLfloat axis
[4], dir
[4], result
[4], tmp
[4];
928 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, axis
);
929 fetch_vector4( ctx
, &inst
->SrcReg
[1], machine
, program
, dir
);
930 tmp
[3] = axis
[0] * axis
[0]
933 tmp
[0] = (2.0F
* (axis
[0] * dir
[0] +
935 axis
[2] * dir
[2])) / tmp
[3];
936 result
[0] = tmp
[0] * axis
[0] - dir
[0];
937 result
[1] = tmp
[0] * axis
[1] - dir
[1];
938 result
[2] = tmp
[0] * axis
[2] - dir
[2];
939 /* result[3] is never written! XXX enforce in parser! */
940 store_vector4( inst
, machine
, result
);
943 case FP_OPCODE_RSQ
: /* 1 / sqrt() */
945 GLfloat a
[4], result
[4];
946 fetch_vector1( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
947 result
[0] = result
[1] = result
[2] = result
[3] = INV_SQRTF(a
[0]);
948 store_vector4( inst
, machine
, result
);
950 printf("RSQ %g = 1/sqrt(%g)\n", result
[0], a
[0]);
954 case FP_OPCODE_SEQ
: /* set on equal */
956 GLfloat a
[4], b
[4], result
[4];
957 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
958 fetch_vector4( ctx
, &inst
->SrcReg
[1], machine
, program
, b
);
959 result
[0] = (a
[0] == b
[0]) ? 1.0F
: 0.0F
;
960 result
[1] = (a
[1] == b
[1]) ? 1.0F
: 0.0F
;
961 result
[2] = (a
[2] == b
[2]) ? 1.0F
: 0.0F
;
962 result
[3] = (a
[3] == b
[3]) ? 1.0F
: 0.0F
;
963 store_vector4( inst
, machine
, result
);
966 case FP_OPCODE_SFL
: /* set false, operands ignored */
968 static const GLfloat result
[4] = { 0.0F
, 0.0F
, 0.0F
, 0.0F
};
969 store_vector4( inst
, machine
, result
);
972 case FP_OPCODE_SGE
: /* set on greater or equal */
974 GLfloat a
[4], b
[4], result
[4];
975 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
976 fetch_vector4( ctx
, &inst
->SrcReg
[1], machine
, program
, b
);
977 result
[0] = (a
[0] >= b
[0]) ? 1.0F
: 0.0F
;
978 result
[1] = (a
[1] >= b
[1]) ? 1.0F
: 0.0F
;
979 result
[2] = (a
[2] >= b
[2]) ? 1.0F
: 0.0F
;
980 result
[3] = (a
[3] >= b
[3]) ? 1.0F
: 0.0F
;
981 store_vector4( inst
, machine
, result
);
984 case FP_OPCODE_SGT
: /* set on greater */
986 GLfloat a
[4], b
[4], result
[4];
987 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
988 fetch_vector4( ctx
, &inst
->SrcReg
[1], machine
, program
, b
);
989 result
[0] = (a
[0] > b
[0]) ? 1.0F
: 0.0F
;
990 result
[1] = (a
[1] > b
[1]) ? 1.0F
: 0.0F
;
991 result
[2] = (a
[2] > b
[2]) ? 1.0F
: 0.0F
;
992 result
[3] = (a
[3] > b
[3]) ? 1.0F
: 0.0F
;
993 store_vector4( inst
, machine
, result
);
998 GLfloat a
[4], result
[4];
999 fetch_vector1( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
1000 result
[0] = result
[1] = result
[2] =
1001 result
[3] = (GLfloat
)_mesa_sin(a
[0]);
1002 store_vector4( inst
, machine
, result
);
1005 case FP_OPCODE_SLE
: /* set on less or equal */
1007 GLfloat a
[4], b
[4], result
[4];
1008 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
1009 fetch_vector4( ctx
, &inst
->SrcReg
[1], machine
, program
, b
);
1010 result
[0] = (a
[0] <= b
[0]) ? 1.0F
: 0.0F
;
1011 result
[1] = (a
[1] <= b
[1]) ? 1.0F
: 0.0F
;
1012 result
[2] = (a
[2] <= b
[2]) ? 1.0F
: 0.0F
;
1013 result
[3] = (a
[3] <= b
[3]) ? 1.0F
: 0.0F
;
1014 store_vector4( inst
, machine
, result
);
1017 case FP_OPCODE_SLT
: /* set on less */
1019 GLfloat a
[4], b
[4], result
[4];
1020 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
1021 fetch_vector4( ctx
, &inst
->SrcReg
[1], machine
, program
, b
);
1022 result
[0] = (a
[0] < b
[0]) ? 1.0F
: 0.0F
;
1023 result
[1] = (a
[1] < b
[1]) ? 1.0F
: 0.0F
;
1024 result
[2] = (a
[2] < b
[2]) ? 1.0F
: 0.0F
;
1025 result
[3] = (a
[3] < b
[3]) ? 1.0F
: 0.0F
;
1026 store_vector4( inst
, machine
, result
);
1029 case FP_OPCODE_SNE
: /* set on not equal */
1031 GLfloat a
[4], b
[4], result
[4];
1032 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
1033 fetch_vector4( ctx
, &inst
->SrcReg
[1], machine
, program
, b
);
1034 result
[0] = (a
[0] != b
[0]) ? 1.0F
: 0.0F
;
1035 result
[1] = (a
[1] != b
[1]) ? 1.0F
: 0.0F
;
1036 result
[2] = (a
[2] != b
[2]) ? 1.0F
: 0.0F
;
1037 result
[3] = (a
[3] != b
[3]) ? 1.0F
: 0.0F
;
1038 store_vector4( inst
, machine
, result
);
1041 case FP_OPCODE_STR
: /* set true, operands ignored */
1043 static const GLfloat result
[4] = { 1.0F
, 1.0F
, 1.0F
, 1.0F
};
1044 store_vector4( inst
, machine
, result
);
1049 GLfloat a
[4], b
[4], result
[4];
1050 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
1051 fetch_vector4( ctx
, &inst
->SrcReg
[1], machine
, program
, b
);
1052 result
[0] = a
[0] - b
[0];
1053 result
[1] = a
[1] - b
[1];
1054 result
[2] = a
[2] - b
[2];
1055 result
[3] = a
[3] - b
[3];
1056 store_vector4( inst
, machine
, result
);
1062 GLfloat texcoord
[4], color
[4];
1063 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, texcoord
);
1064 /* XXX: Undo perspective divide from interpolate_texcoords() */
1065 fetch_texel( ctx
, texcoord
,
1066 span
->array
->lambda
[inst
->TexSrcUnit
][column
],
1067 inst
->TexSrcUnit
, color
);
1068 store_vector4( inst
, machine
, color
);
1072 /* Texture lookup w/ partial derivatives for LOD */
1074 GLfloat texcoord
[4], dtdx
[4], dtdy
[4], color
[4];
1075 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, texcoord
);
1076 fetch_vector4( ctx
, &inst
->SrcReg
[1], machine
, program
, dtdx
);
1077 fetch_vector4( ctx
, &inst
->SrcReg
[2], machine
, program
, dtdy
);
1078 fetch_texel_deriv( ctx
, texcoord
, dtdx
, dtdy
, inst
->TexSrcUnit
,
1080 store_vector4( inst
, machine
, color
);
1084 /* Texture lookup w/ perspective divide */
1086 GLfloat texcoord
[4], color
[4];
1087 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, texcoord
);
1088 /* Already did perspective divide in interpolate_texcoords() */
1089 fetch_texel( ctx
, texcoord
,
1090 span
->array
->lambda
[inst
->TexSrcUnit
][column
],
1091 inst
->TexSrcUnit
, color
);
1092 store_vector4( inst
, machine
, color
);
1095 case FP_OPCODE_UP2H
: /* unpack two 16-bit floats */
1096 /* XXX this is probably wrong */
1098 GLfloat a
[4], result
[4];
1099 const GLuint
*rawBits
= (const GLuint
*) a
;
1100 GLuint
*rawResult
= (GLuint
*) result
;
1101 fetch_vector1( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
1102 rawResult
[0] = rawBits
[0] & 0xffff;
1103 rawResult
[1] = (rawBits
[0] >> 16) & 0xffff;
1104 rawResult
[2] = rawBits
[0] & 0xffff;
1105 rawResult
[3] = (rawBits
[0] >> 16) & 0xffff;
1106 store_vector4( inst
, machine
, result
);
1109 case FP_OPCODE_UP2US
: /* unpack two GLushorts */
1111 GLfloat a
[4], result
[4];
1112 const GLuint
*rawBits
= (const GLuint
*) a
;
1113 fetch_vector1( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
1114 result
[0] = (GLfloat
) ((rawBits
[0] >> 0) & 0xffff) / 65535.0F
;
1115 result
[1] = (GLfloat
) ((rawBits
[0] >> 16) & 0xffff) / 65535.0F
;
1116 result
[2] = result
[0];
1117 result
[3] = result
[1];
1118 store_vector4( inst
, machine
, result
);
1121 case FP_OPCODE_UP4B
: /* unpack four GLbytes */
1123 GLfloat a
[4], result
[4];
1124 const GLuint
*rawBits
= (const GLuint
*) a
;
1125 fetch_vector1( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
1126 result
[0] = (((rawBits
[0] >> 0) & 0xff) - 128) / 127.0F
;
1127 result
[0] = (((rawBits
[0] >> 8) & 0xff) - 128) / 127.0F
;
1128 result
[0] = (((rawBits
[0] >> 16) & 0xff) - 128) / 127.0F
;
1129 result
[0] = (((rawBits
[0] >> 24) & 0xff) - 128) / 127.0F
;
1130 store_vector4( inst
, machine
, result
);
1133 case FP_OPCODE_UP4UB
: /* unpack four GLubytes */
1135 GLfloat a
[4], result
[4];
1136 const GLuint
*rawBits
= (const GLuint
*) a
;
1137 fetch_vector1( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
1138 result
[0] = ((rawBits
[0] >> 0) & 0xff) / 255.0F
;
1139 result
[0] = ((rawBits
[0] >> 8) & 0xff) / 255.0F
;
1140 result
[0] = ((rawBits
[0] >> 16) & 0xff) / 255.0F
;
1141 result
[0] = ((rawBits
[0] >> 24) & 0xff) / 255.0F
;
1142 store_vector4( inst
, machine
, result
);
1145 case FP_OPCODE_X2D
: /* 2-D matrix transform */
1147 GLfloat a
[4], b
[4], c
[4], result
[4];
1148 fetch_vector4( ctx
, &inst
->SrcReg
[0], machine
, program
, a
);
1149 fetch_vector4( ctx
, &inst
->SrcReg
[1], machine
, program
, b
);
1150 fetch_vector4( ctx
, &inst
->SrcReg
[2], machine
, program
, c
);
1151 result
[0] = a
[0] + b
[0] * c
[0] + b
[1] * c
[1];
1152 result
[1] = a
[1] + b
[0] * c
[2] + b
[1] * c
[3];
1153 result
[2] = a
[2] + b
[0] * c
[0] + b
[1] * c
[1];
1154 result
[3] = a
[3] + b
[0] * c
[2] + b
[1] * c
[3];
1155 store_vector4( inst
, machine
, result
);
1161 _mesa_problem(ctx
, "Bad opcode %d in _mesa_exec_fragment_program",
1163 return GL_TRUE
; /* return value doesn't matter */
1171 init_machine( GLcontext
*ctx
, struct fp_machine
*machine
,
1172 const struct fragment_program
*program
,
1173 const struct sw_span
*span
, GLuint col
)
1175 GLuint inputsRead
= program
->InputsRead
;
1178 if (ctx
->FragmentProgram
.CallbackEnabled
)
1181 /* Clear temporary registers */
1182 _mesa_bzero(machine
->Temporaries
,
1183 MAX_NV_FRAGMENT_PROGRAM_TEMPS
* 4 * sizeof(GLfloat
));
1185 /* Load input registers */
1186 if (inputsRead
& (1 << FRAG_ATTRIB_WPOS
)) {
1187 GLfloat
*wpos
= machine
->Inputs
[FRAG_ATTRIB_WPOS
];
1188 wpos
[0] = (GLfloat
) span
->x
+ col
;
1189 wpos
[1] = (GLfloat
) span
->y
;
1190 wpos
[2] = (GLfloat
) span
->array
->z
[col
] / ctx
->DepthMaxF
;
1191 wpos
[3] = span
->w
+ col
* span
->dwdx
;
1193 if (inputsRead
& (1 << FRAG_ATTRIB_COL0
)) {
1194 GLfloat
*col0
= machine
->Inputs
[FRAG_ATTRIB_COL0
];
1195 col0
[0] = CHAN_TO_FLOAT(span
->array
->rgba
[col
][RCOMP
]);
1196 col0
[1] = CHAN_TO_FLOAT(span
->array
->rgba
[col
][GCOMP
]);
1197 col0
[2] = CHAN_TO_FLOAT(span
->array
->rgba
[col
][BCOMP
]);
1198 col0
[3] = CHAN_TO_FLOAT(span
->array
->rgba
[col
][ACOMP
]);
1200 if (inputsRead
& (1 << FRAG_ATTRIB_COL1
)) {
1201 GLfloat
*col1
= machine
->Inputs
[FRAG_ATTRIB_COL1
];
1202 col1
[0] = CHAN_TO_FLOAT(span
->array
->spec
[col
][RCOMP
]);
1203 col1
[1] = CHAN_TO_FLOAT(span
->array
->spec
[col
][GCOMP
]);
1204 col1
[2] = CHAN_TO_FLOAT(span
->array
->spec
[col
][BCOMP
]);
1205 col1
[3] = CHAN_TO_FLOAT(span
->array
->spec
[col
][ACOMP
]);
1207 if (inputsRead
& (1 << FRAG_ATTRIB_FOGC
)) {
1208 GLfloat
*fogc
= machine
->Inputs
[FRAG_ATTRIB_FOGC
];
1209 fogc
[0] = span
->array
->fog
[col
];
1214 for (u
= 0; u
< ctx
->Const
.MaxTextureCoordUnits
; u
++) {
1215 if (inputsRead
& (1 << (FRAG_ATTRIB_TEX0
+ u
))) {
1216 GLfloat
*tex
= machine
->Inputs
[FRAG_ATTRIB_TEX0
+ u
];
1217 /*ASSERT(ctx->Texture._EnabledCoordUnits & (1 << u));*/
1218 COPY_4V(tex
, span
->array
->texcoords
[u
][col
]);
1219 /*ASSERT(tex[0] != 0 || tex[1] != 0 || tex[2] != 0);*/
1223 /* init condition codes */
1224 machine
->CondCodes
[0] = COND_EQ
;
1225 machine
->CondCodes
[1] = COND_EQ
;
1226 machine
->CondCodes
[2] = COND_EQ
;
1227 machine
->CondCodes
[3] = COND_EQ
;
1232 _swrast_exec_nv_fragment_program( GLcontext
*ctx
, struct sw_span
*span
)
1234 const struct fragment_program
*program
= ctx
->FragmentProgram
.Current
;
1237 ctx
->_CurrentProgram
= GL_FRAGMENT_PROGRAM_ARB
; /* or NV, doesn't matter */
1239 for (i
= 0; i
< span
->end
; i
++) {
1240 if (span
->array
->mask
[i
]) {
1241 init_machine(ctx
, &ctx
->FragmentProgram
.Machine
,
1242 ctx
->FragmentProgram
.Current
, span
, i
);
1244 if (!execute_program(ctx
, program
, ~0,
1245 &ctx
->FragmentProgram
.Machine
, span
, i
)) {
1246 span
->array
->mask
[i
] = GL_FALSE
; /* killed fragment */
1249 /* Store output registers */
1251 const GLfloat
*colOut
1252 = ctx
->FragmentProgram
.Machine
.Outputs
[FRAG_OUTPUT_COLR
];
1253 UNCLAMPED_FLOAT_TO_CHAN(span
->array
->rgba
[i
][RCOMP
], colOut
[0]);
1254 UNCLAMPED_FLOAT_TO_CHAN(span
->array
->rgba
[i
][GCOMP
], colOut
[1]);
1255 UNCLAMPED_FLOAT_TO_CHAN(span
->array
->rgba
[i
][BCOMP
], colOut
[2]);
1256 UNCLAMPED_FLOAT_TO_CHAN(span
->array
->rgba
[i
][ACOMP
], colOut
[3]);
1259 if (program
->OutputsWritten
& (1 << FRAG_OUTPUT_DEPR
))
1260 span
->array
->z
[i
] = IROUND(ctx
->FragmentProgram
.Machine
.Outputs
[FRAG_OUTPUT_DEPR
][0] * ctx
->DepthMaxF
);
1264 ctx
->_CurrentProgram
= 0;