2
* Mesa 3-D graphics library
5
* Copyright (C) 1999-2007 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,
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* 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:
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* 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,
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* 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.
27
* Vertex and fragment program support functions.
32
#include "main/glheader.h"
33
#include "main/context.h"
34
#include "main/hash.h"
35
#include "main/mfeatures.h"
37
#include "prog_cache.h"
38
#include "prog_parameter.h"
39
#include "prog_instruction.h"
43
* A pointer to this dummy program is put into the hash table when
44
* glGenPrograms is called.
46
struct gl_program _mesa_DummyProgram;
50
* Init context's vertex/fragment program state
53
_mesa_init_program(struct gl_context *ctx)
58
* If this assertion fails, we need to increase the field
59
* size for register indexes (see INST_INDEX_BITS).
61
ASSERT(ctx->Const.VertexProgram.MaxUniformComponents / 4
62
<= (1 << INST_INDEX_BITS));
63
ASSERT(ctx->Const.FragmentProgram.MaxUniformComponents / 4
64
<= (1 << INST_INDEX_BITS));
66
ASSERT(ctx->Const.VertexProgram.MaxTemps <= (1 << INST_INDEX_BITS));
67
ASSERT(ctx->Const.VertexProgram.MaxLocalParams <= (1 << INST_INDEX_BITS));
68
ASSERT(ctx->Const.FragmentProgram.MaxTemps <= (1 << INST_INDEX_BITS));
69
ASSERT(ctx->Const.FragmentProgram.MaxLocalParams <= (1 << INST_INDEX_BITS));
71
ASSERT(ctx->Const.VertexProgram.MaxUniformComponents <= 4 * MAX_UNIFORMS);
72
ASSERT(ctx->Const.FragmentProgram.MaxUniformComponents <= 4 * MAX_UNIFORMS);
74
ASSERT(ctx->Const.VertexProgram.MaxAddressOffset <= (1 << INST_INDEX_BITS));
75
ASSERT(ctx->Const.FragmentProgram.MaxAddressOffset <= (1 << INST_INDEX_BITS));
77
/* If this fails, increase prog_instruction::TexSrcUnit size */
78
ASSERT(MAX_TEXTURE_UNITS <= (1 << 5));
80
/* If this fails, increase prog_instruction::TexSrcTarget size */
81
ASSERT(NUM_TEXTURE_TARGETS <= (1 << 4));
83
ctx->Program.ErrorPos = -1;
84
ctx->Program.ErrorString = _mesa_strdup("");
86
#if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
87
ctx->VertexProgram.Enabled = GL_FALSE;
89
ctx->VertexProgram.PointSizeEnabled =
90
(ctx->API == API_OPENGLES2) ? GL_TRUE : GL_FALSE;
92
ctx->VertexProgram.PointSizeEnabled = GL_FALSE;
94
ctx->VertexProgram.TwoSideEnabled = GL_FALSE;
95
_mesa_reference_vertprog(ctx, &ctx->VertexProgram.Current,
96
ctx->Shared->DefaultVertexProgram);
97
assert(ctx->VertexProgram.Current);
98
for (i = 0; i < MAX_NV_VERTEX_PROGRAM_PARAMS / 4; i++) {
99
ctx->VertexProgram.TrackMatrix[i] = GL_NONE;
100
ctx->VertexProgram.TrackMatrixTransform[i] = GL_IDENTITY_NV;
102
ctx->VertexProgram.Cache = _mesa_new_program_cache();
105
#if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program
106
ctx->FragmentProgram.Enabled = GL_FALSE;
107
_mesa_reference_fragprog(ctx, &ctx->FragmentProgram.Current,
108
ctx->Shared->DefaultFragmentProgram);
109
assert(ctx->FragmentProgram.Current);
110
ctx->FragmentProgram.Cache = _mesa_new_program_cache();
113
#if FEATURE_ARB_geometry_shader4
114
ctx->GeometryProgram.Enabled = GL_FALSE;
115
/* right now by default we don't have a geometry program */
116
_mesa_reference_geomprog(ctx, &ctx->GeometryProgram.Current,
118
ctx->GeometryProgram.Cache = _mesa_new_program_cache();
121
/* XXX probably move this stuff */
122
#if FEATURE_ATI_fragment_shader
123
ctx->ATIFragmentShader.Enabled = GL_FALSE;
124
ctx->ATIFragmentShader.Current = ctx->Shared->DefaultFragmentShader;
125
assert(ctx->ATIFragmentShader.Current);
126
ctx->ATIFragmentShader.Current->RefCount++;
132
* Free a context's vertex/fragment program state
135
_mesa_free_program_data(struct gl_context *ctx)
137
#if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
138
_mesa_reference_vertprog(ctx, &ctx->VertexProgram.Current, NULL);
139
_mesa_delete_program_cache(ctx, ctx->VertexProgram.Cache);
141
#if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program
142
_mesa_reference_fragprog(ctx, &ctx->FragmentProgram.Current, NULL);
143
_mesa_delete_shader_cache(ctx, ctx->FragmentProgram.Cache);
145
#if FEATURE_ARB_geometry_shader4
146
_mesa_reference_geomprog(ctx, &ctx->GeometryProgram.Current, NULL);
147
_mesa_delete_program_cache(ctx, ctx->GeometryProgram.Cache);
149
/* XXX probably move this stuff */
150
#if FEATURE_ATI_fragment_shader
151
if (ctx->ATIFragmentShader.Current) {
152
ctx->ATIFragmentShader.Current->RefCount--;
153
if (ctx->ATIFragmentShader.Current->RefCount <= 0) {
154
free(ctx->ATIFragmentShader.Current);
158
free((void *) ctx->Program.ErrorString);
163
* Update the default program objects in the given context to reference those
164
* specified in the shared state and release those referencing the old
168
_mesa_update_default_objects_program(struct gl_context *ctx)
170
#if FEATURE_NV_vertex_program || FEATURE_ARB_vertex_program
171
_mesa_reference_vertprog(ctx, &ctx->VertexProgram.Current,
172
ctx->Shared->DefaultVertexProgram);
173
assert(ctx->VertexProgram.Current);
176
#if FEATURE_NV_fragment_program || FEATURE_ARB_fragment_program
177
_mesa_reference_fragprog(ctx, &ctx->FragmentProgram.Current,
178
ctx->Shared->DefaultFragmentProgram);
179
assert(ctx->FragmentProgram.Current);
182
#if FEATURE_ARB_geometry_shader4
183
_mesa_reference_geomprog(ctx, &ctx->GeometryProgram.Current,
184
ctx->Shared->DefaultGeometryProgram);
187
/* XXX probably move this stuff */
188
#if FEATURE_ATI_fragment_shader
189
if (ctx->ATIFragmentShader.Current) {
190
ctx->ATIFragmentShader.Current->RefCount--;
191
if (ctx->ATIFragmentShader.Current->RefCount <= 0) {
192
free(ctx->ATIFragmentShader.Current);
195
ctx->ATIFragmentShader.Current = (struct ati_fragment_shader *) ctx->Shared->DefaultFragmentShader;
196
assert(ctx->ATIFragmentShader.Current);
197
ctx->ATIFragmentShader.Current->RefCount++;
203
* Set the vertex/fragment program error state (position and error string).
204
* This is generally called from within the parsers.
207
_mesa_set_program_error(struct gl_context *ctx, GLint pos, const char *string)
209
ctx->Program.ErrorPos = pos;
210
free((void *) ctx->Program.ErrorString);
213
ctx->Program.ErrorString = _mesa_strdup(string);
218
* Find the line number and column for 'pos' within 'string'.
219
* Return a copy of the line which contains 'pos'. Free the line with
221
* \param string the program string
222
* \param pos the position within the string
223
* \param line returns the line number corresponding to 'pos'.
224
* \param col returns the column number corresponding to 'pos'.
225
* \return copy of the line containing 'pos'.
228
_mesa_find_line_column(const GLubyte *string, const GLubyte *pos,
229
GLint *line, GLint *col)
231
const GLubyte *lineStart = string;
232
const GLubyte *p = string;
239
if (*p == (GLubyte) '\n') {
246
*col = (pos - lineStart) + 1;
248
/* return copy of this line */
249
while (*p != 0 && *p != '\n')
252
s = (GLubyte *) malloc(len + 1);
253
memcpy(s, lineStart, len);
261
* Initialize a new vertex/fragment program object.
263
static struct gl_program *
264
_mesa_init_program_struct( struct gl_context *ctx, struct gl_program *prog,
265
GLenum target, GLuint id)
270
memset(prog, 0, sizeof(*prog));
272
prog->Target = target;
273
prog->Resident = GL_TRUE;
275
prog->Format = GL_PROGRAM_FORMAT_ASCII_ARB;
277
/* default mapping from samplers to texture units */
278
for (i = 0; i < MAX_SAMPLERS; i++)
279
prog->SamplerUnits[i] = i;
287
* Initialize a new fragment program object.
290
_mesa_init_fragment_program( struct gl_context *ctx, struct gl_fragment_program *prog,
291
GLenum target, GLuint id)
294
return _mesa_init_program_struct( ctx, &prog->Base, target, id );
301
* Initialize a new vertex program object.
304
_mesa_init_vertex_program( struct gl_context *ctx, struct gl_vertex_program *prog,
305
GLenum target, GLuint id)
308
return _mesa_init_program_struct( ctx, &prog->Base, target, id );
315
* Initialize a new geometry program object.
318
_mesa_init_geometry_program( struct gl_context *ctx, struct gl_geometry_program *prog,
319
GLenum target, GLuint id)
322
return _mesa_init_program_struct( ctx, &prog->Base, target, id );
329
* Allocate and initialize a new fragment/vertex program object but
330
* don't put it into the program hash table. Called via
331
* ctx->Driver.NewProgram. May be overridden (ie. replaced) by a
332
* device driver function to implement OO deriviation with additional
333
* types not understood by this function.
336
* \param id program id/number
337
* \param target program target/type
338
* \return pointer to new program object
341
_mesa_new_program(struct gl_context *ctx, GLenum target, GLuint id)
343
struct gl_program *prog;
345
case GL_VERTEX_PROGRAM_ARB: /* == GL_VERTEX_PROGRAM_NV */
346
case GL_VERTEX_STATE_PROGRAM_NV:
347
prog = _mesa_init_vertex_program(ctx, CALLOC_STRUCT(gl_vertex_program),
350
case GL_FRAGMENT_PROGRAM_NV:
351
case GL_FRAGMENT_PROGRAM_ARB:
352
prog =_mesa_init_fragment_program(ctx,
353
CALLOC_STRUCT(gl_fragment_program),
356
case MESA_GEOMETRY_PROGRAM:
357
prog = _mesa_init_geometry_program(ctx,
358
CALLOC_STRUCT(gl_geometry_program),
362
_mesa_problem(ctx, "bad target in _mesa_new_program");
370
* Delete a program and remove it from the hash table, ignoring the
372
* Called via ctx->Driver.DeleteProgram. May be wrapped (OO deriviation)
373
* by a device driver function.
376
_mesa_delete_program(struct gl_context *ctx, struct gl_program *prog)
380
ASSERT(prog->RefCount==0);
382
if (prog == &_mesa_DummyProgram)
388
if (prog->Instructions) {
389
_mesa_free_instructions(prog->Instructions, prog->NumInstructions);
391
if (prog->Parameters) {
392
_mesa_free_parameter_list(prog->Parameters);
400
* Return the gl_program object for a given ID.
401
* Basically just a wrapper for _mesa_HashLookup() to avoid a lot of
405
_mesa_lookup_program(struct gl_context *ctx, GLuint id)
408
return (struct gl_program *) _mesa_HashLookup(ctx->Shared->Programs, id);
415
* Reference counting for vertex/fragment programs
416
* This is normally only called from the _mesa_reference_program() macro
417
* when there's a real pointer change.
420
_mesa_reference_program_(struct gl_context *ctx,
421
struct gl_program **ptr,
422
struct gl_program *prog)
428
if ((*ptr)->Target == GL_VERTEX_PROGRAM_ARB)
429
ASSERT(prog->Target == GL_VERTEX_PROGRAM_ARB);
430
else if ((*ptr)->Target == GL_FRAGMENT_PROGRAM_ARB)
431
ASSERT(prog->Target == GL_FRAGMENT_PROGRAM_ARB ||
432
prog->Target == GL_FRAGMENT_PROGRAM_NV);
433
else if ((*ptr)->Target == MESA_GEOMETRY_PROGRAM)
434
ASSERT(prog->Target == MESA_GEOMETRY_PROGRAM);
439
GLboolean deleteFlag;
441
/*_glthread_LOCK_MUTEX((*ptr)->Mutex);*/
443
printf("Program %p ID=%u Target=%s Refcount-- to %d\n",
445
((*ptr)->Target == GL_VERTEX_PROGRAM_ARB ? "VP" :
446
((*ptr)->Target == MESA_GEOMETRY_PROGRAM ? "GP" : "FP")),
447
(*ptr)->RefCount - 1);
449
ASSERT((*ptr)->RefCount > 0);
452
deleteFlag = ((*ptr)->RefCount == 0);
453
/*_glthread_UNLOCK_MUTEX((*ptr)->Mutex);*/
457
ctx->Driver.DeleteProgram(ctx, *ptr);
465
/*_glthread_LOCK_MUTEX(prog->Mutex);*/
468
printf("Program %p ID=%u Target=%s Refcount++ to %d\n",
470
(prog->Target == GL_VERTEX_PROGRAM_ARB ? "VP" :
471
(prog->Target == MESA_GEOMETRY_PROGRAM ? "GP" : "FP")),
474
/*_glthread_UNLOCK_MUTEX(prog->Mutex);*/
482
* Return a copy of a program.
483
* XXX Problem here if the program object is actually OO-derivation
484
* made by a device driver.
487
_mesa_clone_program(struct gl_context *ctx, const struct gl_program *prog)
489
struct gl_program *clone;
491
clone = ctx->Driver.NewProgram(ctx, prog->Target, prog->Id);
495
assert(clone->Target == prog->Target);
496
assert(clone->RefCount == 1);
498
clone->String = (GLubyte *) _mesa_strdup((char *) prog->String);
499
clone->Format = prog->Format;
500
clone->Instructions = _mesa_alloc_instructions(prog->NumInstructions);
501
if (!clone->Instructions) {
502
_mesa_reference_program(ctx, &clone, NULL);
505
_mesa_copy_instructions(clone->Instructions, prog->Instructions,
506
prog->NumInstructions);
507
clone->InputsRead = prog->InputsRead;
508
clone->OutputsWritten = prog->OutputsWritten;
509
clone->SamplersUsed = prog->SamplersUsed;
510
clone->ShadowSamplers = prog->ShadowSamplers;
511
memcpy(clone->TexturesUsed, prog->TexturesUsed, sizeof(prog->TexturesUsed));
513
if (prog->Parameters)
514
clone->Parameters = _mesa_clone_parameter_list(prog->Parameters);
515
memcpy(clone->LocalParams, prog->LocalParams, sizeof(clone->LocalParams));
516
memcpy(clone->LocalParams, prog->LocalParams, sizeof(clone->LocalParams));
517
clone->IndirectRegisterFiles = prog->IndirectRegisterFiles;
518
clone->NumInstructions = prog->NumInstructions;
519
clone->NumTemporaries = prog->NumTemporaries;
520
clone->NumParameters = prog->NumParameters;
521
clone->NumAttributes = prog->NumAttributes;
522
clone->NumAddressRegs = prog->NumAddressRegs;
523
clone->NumNativeInstructions = prog->NumNativeInstructions;
524
clone->NumNativeTemporaries = prog->NumNativeTemporaries;
525
clone->NumNativeParameters = prog->NumNativeParameters;
526
clone->NumNativeAttributes = prog->NumNativeAttributes;
527
clone->NumNativeAddressRegs = prog->NumNativeAddressRegs;
528
clone->NumAluInstructions = prog->NumAluInstructions;
529
clone->NumTexInstructions = prog->NumTexInstructions;
530
clone->NumTexIndirections = prog->NumTexIndirections;
531
clone->NumNativeAluInstructions = prog->NumNativeAluInstructions;
532
clone->NumNativeTexInstructions = prog->NumNativeTexInstructions;
533
clone->NumNativeTexIndirections = prog->NumNativeTexIndirections;
535
switch (prog->Target) {
536
case GL_VERTEX_PROGRAM_ARB:
538
const struct gl_vertex_program *vp = gl_vertex_program_const(prog);
539
struct gl_vertex_program *vpc = gl_vertex_program(clone);
540
vpc->IsPositionInvariant = vp->IsPositionInvariant;
541
vpc->IsNVProgram = vp->IsNVProgram;
544
case GL_FRAGMENT_PROGRAM_ARB:
546
const struct gl_fragment_program *fp = gl_fragment_program_const(prog);
547
struct gl_fragment_program *fpc = gl_fragment_program(clone);
548
fpc->UsesKill = fp->UsesKill;
549
fpc->UsesDFdy = fp->UsesDFdy;
550
fpc->OriginUpperLeft = fp->OriginUpperLeft;
551
fpc->PixelCenterInteger = fp->PixelCenterInteger;
554
case MESA_GEOMETRY_PROGRAM:
556
const struct gl_geometry_program *gp = gl_geometry_program_const(prog);
557
struct gl_geometry_program *gpc = gl_geometry_program(clone);
558
gpc->VerticesOut = gp->VerticesOut;
559
gpc->InputType = gp->InputType;
560
gpc->OutputType = gp->OutputType;
564
_mesa_problem(NULL, "Unexpected target in _mesa_clone_program");
572
* Insert 'count' NOP instructions at 'start' in the given program.
573
* Adjust branch targets accordingly.
576
_mesa_insert_instructions(struct gl_program *prog, GLuint start, GLuint count)
578
const GLuint origLen = prog->NumInstructions;
579
const GLuint newLen = origLen + count;
580
struct prog_instruction *newInst;
583
/* adjust branches */
584
for (i = 0; i < prog->NumInstructions; i++) {
585
struct prog_instruction *inst = prog->Instructions + i;
586
if (inst->BranchTarget > 0) {
587
if ((GLuint)inst->BranchTarget >= start) {
588
inst->BranchTarget += count;
593
/* Alloc storage for new instructions */
594
newInst = _mesa_alloc_instructions(newLen);
599
/* Copy 'start' instructions into new instruction buffer */
600
_mesa_copy_instructions(newInst, prog->Instructions, start);
602
/* init the new instructions */
603
_mesa_init_instructions(newInst + start, count);
605
/* Copy the remaining/tail instructions to new inst buffer */
606
_mesa_copy_instructions(newInst + start + count,
607
prog->Instructions + start,
610
/* free old instructions */
611
_mesa_free_instructions(prog->Instructions, origLen);
613
/* install new instructions */
614
prog->Instructions = newInst;
615
prog->NumInstructions = newLen;
621
* Delete 'count' instructions at 'start' in the given program.
622
* Adjust branch targets accordingly.
625
_mesa_delete_instructions(struct gl_program *prog, GLuint start, GLuint count)
627
const GLuint origLen = prog->NumInstructions;
628
const GLuint newLen = origLen - count;
629
struct prog_instruction *newInst;
632
/* adjust branches */
633
for (i = 0; i < prog->NumInstructions; i++) {
634
struct prog_instruction *inst = prog->Instructions + i;
635
if (inst->BranchTarget > 0) {
636
if (inst->BranchTarget > (GLint) start) {
637
inst->BranchTarget -= count;
642
/* Alloc storage for new instructions */
643
newInst = _mesa_alloc_instructions(newLen);
648
/* Copy 'start' instructions into new instruction buffer */
649
_mesa_copy_instructions(newInst, prog->Instructions, start);
651
/* Copy the remaining/tail instructions to new inst buffer */
652
_mesa_copy_instructions(newInst + start,
653
prog->Instructions + start + count,
656
/* free old instructions */
657
_mesa_free_instructions(prog->Instructions, origLen);
659
/* install new instructions */
660
prog->Instructions = newInst;
661
prog->NumInstructions = newLen;
668
* Search instructions for registers that match (oldFile, oldIndex),
669
* replacing them with (newFile, newIndex).
672
replace_registers(struct prog_instruction *inst, GLuint numInst,
673
GLuint oldFile, GLuint oldIndex,
674
GLuint newFile, GLuint newIndex)
677
for (i = 0; i < numInst; i++) {
679
for (j = 0; j < _mesa_num_inst_src_regs(inst[i].Opcode); j++) {
680
if (inst[i].SrcReg[j].File == oldFile &&
681
inst[i].SrcReg[j].Index == oldIndex) {
682
inst[i].SrcReg[j].File = newFile;
683
inst[i].SrcReg[j].Index = newIndex;
687
if (inst[i].DstReg.File == oldFile && inst[i].DstReg.Index == oldIndex) {
688
inst[i].DstReg.File = newFile;
689
inst[i].DstReg.Index = newIndex;
696
* Search instructions for references to program parameters. When found,
697
* increment the parameter index by 'offset'.
698
* Used when combining programs.
701
adjust_param_indexes(struct prog_instruction *inst, GLuint numInst,
705
for (i = 0; i < numInst; i++) {
706
for (j = 0; j < _mesa_num_inst_src_regs(inst[i].Opcode); j++) {
707
GLuint f = inst[i].SrcReg[j].File;
708
if (f == PROGRAM_CONSTANT ||
709
f == PROGRAM_UNIFORM ||
710
f == PROGRAM_STATE_VAR) {
711
inst[i].SrcReg[j].Index += offset;
719
* Combine two programs into one. Fix instructions so the outputs of
720
* the first program go to the inputs of the second program.
723
_mesa_combine_programs(struct gl_context *ctx,
724
const struct gl_program *progA,
725
const struct gl_program *progB)
727
struct prog_instruction *newInst;
728
struct gl_program *newProg;
729
const GLuint lenA = progA->NumInstructions - 1; /* omit END instr */
730
const GLuint lenB = progB->NumInstructions;
731
const GLuint numParamsA = _mesa_num_parameters(progA->Parameters);
732
const GLuint newLength = lenA + lenB;
733
GLboolean usedTemps[MAX_PROGRAM_TEMPS];
734
GLuint firstTemp = 0;
738
ASSERT(progA->Target == progB->Target);
740
newInst = _mesa_alloc_instructions(newLength);
744
_mesa_copy_instructions(newInst, progA->Instructions, lenA);
745
_mesa_copy_instructions(newInst + lenA, progB->Instructions, lenB);
747
/* adjust branch / instruction addresses for B's instructions */
748
for (i = 0; i < lenB; i++) {
749
newInst[lenA + i].BranchTarget += lenA;
752
newProg = ctx->Driver.NewProgram(ctx, progA->Target, 0);
753
newProg->Instructions = newInst;
754
newProg->NumInstructions = newLength;
756
/* find used temp regs (we may need new temps below) */
757
_mesa_find_used_registers(newProg, PROGRAM_TEMPORARY,
758
usedTemps, MAX_PROGRAM_TEMPS);
760
if (newProg->Target == GL_FRAGMENT_PROGRAM_ARB) {
761
const struct gl_fragment_program *fprogA, *fprogB;
762
struct gl_fragment_program *newFprog;
763
GLbitfield progB_inputsRead = progB->InputsRead;
764
GLint progB_colorFile, progB_colorIndex;
766
fprogA = gl_fragment_program_const(progA);
767
fprogB = gl_fragment_program_const(progB);
768
newFprog = gl_fragment_program(newProg);
770
newFprog->UsesKill = fprogA->UsesKill || fprogB->UsesKill;
771
newFprog->UsesDFdy = fprogA->UsesDFdy || fprogB->UsesDFdy;
773
/* We'll do a search and replace for instances
774
* of progB_colorFile/progB_colorIndex below...
776
progB_colorFile = PROGRAM_INPUT;
777
progB_colorIndex = FRAG_ATTRIB_COL0;
780
* The fragment program may get color from a state var rather than
781
* a fragment input (vertex output) if it's constant.
782
* See the texenvprogram.c code.
783
* So, search the program's parameter list now to see if the program
784
* gets color from a state var instead of a conventional fragment
787
for (i = 0; i < progB->Parameters->NumParameters; i++) {
788
struct gl_program_parameter *p = &progB->Parameters->Parameters[i];
789
if (p->Type == PROGRAM_STATE_VAR &&
790
p->StateIndexes[0] == STATE_INTERNAL &&
791
p->StateIndexes[1] == STATE_CURRENT_ATTRIB &&
792
(int) p->StateIndexes[2] == (int) VERT_ATTRIB_COLOR0) {
793
progB_inputsRead |= FRAG_BIT_COL0;
794
progB_colorFile = PROGRAM_STATE_VAR;
795
progB_colorIndex = i;
800
/* Connect color outputs of fprogA to color inputs of fprogB, via a
801
* new temporary register.
803
if ((progA->OutputsWritten & BITFIELD64_BIT(FRAG_RESULT_COLOR)) &&
804
(progB_inputsRead & FRAG_BIT_COL0)) {
805
GLint tempReg = _mesa_find_free_register(usedTemps, MAX_PROGRAM_TEMPS,
808
_mesa_problem(ctx, "No free temp regs found in "
809
"_mesa_combine_programs(), using 31");
812
firstTemp = tempReg + 1;
814
/* replace writes to result.color[0] with tempReg */
815
replace_registers(newInst, lenA,
816
PROGRAM_OUTPUT, FRAG_RESULT_COLOR,
817
PROGRAM_TEMPORARY, tempReg);
818
/* replace reads from the input color with tempReg */
819
replace_registers(newInst + lenA, lenB,
820
progB_colorFile, progB_colorIndex, /* search for */
821
PROGRAM_TEMPORARY, tempReg /* replace with */ );
824
/* compute combined program's InputsRead */
825
inputsB = progB_inputsRead;
826
if (progA->OutputsWritten & BITFIELD64_BIT(FRAG_RESULT_COLOR)) {
827
inputsB &= ~(1 << FRAG_ATTRIB_COL0);
829
newProg->InputsRead = progA->InputsRead | inputsB;
830
newProg->OutputsWritten = progB->OutputsWritten;
831
newProg->SamplersUsed = progA->SamplersUsed | progB->SamplersUsed;
835
assert(0); /* XXX todo */
839
* Merge parameters (uniforms, constants, etc)
841
newProg->Parameters = _mesa_combine_parameter_lists(progA->Parameters,
844
adjust_param_indexes(newInst + lenA, lenB, numParamsA);
852
* Populate the 'used' array with flags indicating which registers (TEMPs,
853
* INPUTs, OUTPUTs, etc, are used by the given program.
854
* \param file type of register to scan for
855
* \param used returns true/false flags for in use / free
856
* \param usedSize size of the 'used' array
859
_mesa_find_used_registers(const struct gl_program *prog,
860
gl_register_file file,
861
GLboolean used[], GLuint usedSize)
865
memset(used, 0, usedSize);
867
for (i = 0; i < prog->NumInstructions; i++) {
868
const struct prog_instruction *inst = prog->Instructions + i;
869
const GLuint n = _mesa_num_inst_src_regs(inst->Opcode);
871
if (inst->DstReg.File == file) {
872
ASSERT(inst->DstReg.Index < usedSize);
873
if(inst->DstReg.Index < usedSize)
874
used[inst->DstReg.Index] = GL_TRUE;
877
for (j = 0; j < n; j++) {
878
if (inst->SrcReg[j].File == file) {
879
ASSERT(inst->SrcReg[j].Index < usedSize);
880
if(inst->SrcReg[j].Index < usedSize)
881
used[inst->SrcReg[j].Index] = GL_TRUE;
889
* Scan the given 'used' register flag array for the first entry
890
* that's >= firstReg.
891
* \param used vector of flags indicating registers in use (as returned
892
* by _mesa_find_used_registers())
893
* \param usedSize size of the 'used' array
894
* \param firstReg first register to start searching at
895
* \return index of unused register, or -1 if none.
898
_mesa_find_free_register(const GLboolean used[],
899
GLuint usedSize, GLuint firstReg)
903
assert(firstReg < usedSize);
905
for (i = firstReg; i < usedSize; i++)
915
* Check if the given register index is valid (doesn't exceed implementation-
917
* \return GL_TRUE if OK, GL_FALSE if bad index
920
_mesa_valid_register_index(const struct gl_context *ctx,
921
gl_shader_type shaderType,
922
gl_register_file file, GLint index)
924
const struct gl_program_constants *c;
926
switch (shaderType) {
927
case MESA_SHADER_VERTEX:
928
c = &ctx->Const.VertexProgram;
930
case MESA_SHADER_FRAGMENT:
931
c = &ctx->Const.FragmentProgram;
933
case MESA_SHADER_GEOMETRY:
934
c = &ctx->Const.GeometryProgram;
938
"unexpected shader type in _mesa_valid_register_index()");
943
case PROGRAM_UNDEFINED:
944
return GL_TRUE; /* XXX or maybe false? */
946
case PROGRAM_TEMPORARY:
947
return index >= 0 && index < c->MaxTemps;
949
case PROGRAM_ENV_PARAM:
950
return index >= 0 && index < c->MaxEnvParams;
952
case PROGRAM_LOCAL_PARAM:
953
return index >= 0 && index < c->MaxLocalParams;
955
case PROGRAM_NAMED_PARAM:
956
return index >= 0 && index < c->MaxParameters;
958
case PROGRAM_UNIFORM:
959
case PROGRAM_STATE_VAR:
960
/* aka constant buffer */
961
return index >= 0 && index < c->MaxUniformComponents / 4;
963
case PROGRAM_CONSTANT:
964
/* constant buffer w/ possible relative negative addressing */
965
return (index > (int) c->MaxUniformComponents / -4 &&
966
index < c->MaxUniformComponents / 4);
972
switch (shaderType) {
973
case MESA_SHADER_VERTEX:
974
return index < VERT_ATTRIB_GENERIC0 + c->MaxAttribs;
975
case MESA_SHADER_FRAGMENT:
976
return index < FRAG_ATTRIB_VAR0 + ctx->Const.MaxVarying;
977
case MESA_SHADER_GEOMETRY:
978
return index < GEOM_ATTRIB_VAR0 + ctx->Const.MaxVarying;
987
switch (shaderType) {
988
case MESA_SHADER_VERTEX:
989
return index < VERT_RESULT_VAR0 + ctx->Const.MaxVarying;
990
case MESA_SHADER_FRAGMENT:
991
return index < FRAG_RESULT_DATA0 + ctx->Const.MaxDrawBuffers;
992
case MESA_SHADER_GEOMETRY:
993
return index < GEOM_RESULT_VAR0 + ctx->Const.MaxVarying;
998
case PROGRAM_ADDRESS:
999
return index >= 0 && index < c->MaxAddressRegs;
1003
"unexpected register file in _mesa_valid_register_index()");
1011
* "Post-process" a GPU program. This is intended to be used for debugging.
1012
* Example actions include no-op'ing instructions or changing instruction
1016
_mesa_postprocess_program(struct gl_context *ctx, struct gl_program *prog)
1018
static const GLfloat white[4] = { 0.5, 0.5, 0.5, 0.5 };
1020
GLuint whiteSwizzle;
1021
GLint whiteIndex = _mesa_add_unnamed_constant(prog->Parameters,
1022
(gl_constant_value *) white,
1027
for (i = 0; i < prog->NumInstructions; i++) {
1028
struct prog_instruction *inst = prog->Instructions + i;
1029
const GLuint n = _mesa_num_inst_src_regs(inst->Opcode);
1033
if (_mesa_is_tex_instruction(inst->Opcode)) {
1035
/* replace TEX/TXP/TXB with MOV */
1036
inst->Opcode = OPCODE_MOV;
1037
inst->DstReg.WriteMask = WRITEMASK_XYZW;
1038
inst->SrcReg[0].Swizzle = SWIZZLE_XYZW;
1039
inst->SrcReg[0].Negate = NEGATE_NONE;
1043
/* disable shadow texture mode */
1044
inst->TexShadow = 0;
1048
if (inst->Opcode == OPCODE_TXP) {
1050
inst->Opcode = OPCODE_MOV;
1051
inst->DstReg.WriteMask = WRITEMASK_XYZW;
1052
inst->SrcReg[0].File = PROGRAM_CONSTANT;
1053
inst->SrcReg[0].Index = whiteIndex;
1054
inst->SrcReg[0].Swizzle = SWIZZLE_XYZW;
1055
inst->SrcReg[0].Negate = NEGATE_NONE;
1058
inst->TexShadow = 0;
1061
inst->Opcode = OPCODE_TEX;
1062
inst->TexShadow = 0;
added
removed
src/mesa/program/program.c
