/**************************************************************************
*
* Copyright 2007-2008 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/*
* \author
* Michal Krol,
* Keith Whitwell
*/
#include "pipe/p_compiler.h"
#include "pipe/p_shader_tokens.h"
#include "pipe/p_state.h"
#include "tgsi/tgsi_ureg.h"
#include "st_mesa_to_tgsi.h"
#include "shader/prog_instruction.h"
#include "shader/prog_parameter.h"
#include "shader/prog_print.h"
#include "util/u_debug.h"
#include "util/u_math.h"
#include "util/u_memory.h"
struct label {
unsigned branch_target;
unsigned token;
};
struct st_translate {
struct ureg_program *ureg;
struct ureg_dst temps[MAX_PROGRAM_TEMPS];
struct ureg_src *constants;
struct ureg_dst outputs[PIPE_MAX_SHADER_OUTPUTS];
struct ureg_src inputs[PIPE_MAX_SHADER_INPUTS];
struct ureg_dst address[1];
struct ureg_src samplers[PIPE_MAX_SAMPLERS];
const GLuint *inputMapping;
const GLuint *outputMapping;
/* For every instruction that contains a label (eg CALL), keep
* details so that we can go back afterwards and emit the correct
* tgsi instruction number for each label.
*/
struct label *labels;
unsigned labels_size;
unsigned labels_count;
/* Keep a record of the tgsi instruction number that each mesa
* instruction starts at, will be used to fix up labels after
* translation.
*/
unsigned *insn;
unsigned insn_size;
unsigned insn_count;
unsigned procType; /**< TGSI_PROCESSOR_VERTEX/FRAGMENT */
boolean error;
};
static unsigned *get_label( struct st_translate *t,
unsigned branch_target )
{
unsigned i;
if (t->labels_count + 1 >= t->labels_size) {
unsigned old_size = t->labels_size;
t->labels_size = 1 << (util_logbase2(t->labels_size) + 1);
t->labels = REALLOC( t->labels,
old_size * sizeof t->labels[0],
t->labels_size * sizeof t->labels[0] );
if (t->labels == NULL) {
static unsigned dummy;
t->error = TRUE;
return &dummy;
}
}
i = t->labels_count++;
t->labels[i].branch_target = branch_target;
return &t->labels[i].token;
}
static void set_insn_start( struct st_translate *t,
unsigned start )
{
if (t->insn_count + 1 >= t->insn_size) {
unsigned old_size = t->insn_size;
t->insn_size = 1 << (util_logbase2(t->insn_size) + 1);
t->insn = REALLOC( t->insn,
old_size * sizeof t->insn[0],
t->insn_size * sizeof t->insn[0] );
if (t->insn == NULL) {
t->error = TRUE;
return;
}
}
t->insn[t->insn_count++] = start;
}
/*
* Map mesa register file to TGSI register file.
*/
static struct ureg_dst
dst_register( struct st_translate *t,
gl_register_file file,
GLuint index )
{
switch( file ) {
case PROGRAM_UNDEFINED:
return ureg_dst_undef();
case PROGRAM_TEMPORARY:
if (ureg_dst_is_undef(t->temps[index]))
t->temps[index] = ureg_DECL_temporary( t->ureg );
return t->temps[index];
case PROGRAM_OUTPUT:
return t->outputs[t->outputMapping[index]];
case PROGRAM_ADDRESS:
return t->address[index];
default:
debug_assert( 0 );
return ureg_dst_undef();
}
}
static struct ureg_src
src_register( struct st_translate *t,
gl_register_file file,
GLuint index )
{
switch( file ) {
case PROGRAM_UNDEFINED:
return ureg_src_undef();
case PROGRAM_TEMPORARY:
if (ureg_dst_is_undef(t->temps[index]))
t->temps[index] = ureg_DECL_temporary( t->ureg );
return ureg_src(t->temps[index]);
case PROGRAM_STATE_VAR:
case PROGRAM_NAMED_PARAM:
case PROGRAM_ENV_PARAM:
case PROGRAM_UNIFORM:
case PROGRAM_CONSTANT: /* ie, immediate */
return t->constants[index];
case PROGRAM_INPUT:
return t->inputs[t->inputMapping[index]];
case PROGRAM_OUTPUT:
return ureg_src(t->outputs[t->outputMapping[index]]); /* not needed? */
case PROGRAM_ADDRESS:
return ureg_src(t->address[index]);
default:
debug_assert( 0 );
return ureg_src_undef();
}
}
/**
* Map mesa texture target to TGSI texture target.
*/
static unsigned
translate_texture_target( GLuint textarget,
GLboolean shadow )
{
if (shadow) {
switch( textarget ) {
case TEXTURE_1D_INDEX: return TGSI_TEXTURE_SHADOW1D;
case TEXTURE_2D_INDEX: return TGSI_TEXTURE_SHADOW2D;
case TEXTURE_RECT_INDEX: return TGSI_TEXTURE_SHADOWRECT;
default: break;
}
}
switch( textarget ) {
case TEXTURE_1D_INDEX: return TGSI_TEXTURE_1D;
case TEXTURE_2D_INDEX: return TGSI_TEXTURE_2D;
case TEXTURE_3D_INDEX: return TGSI_TEXTURE_3D;
case TEXTURE_CUBE_INDEX: return TGSI_TEXTURE_CUBE;
case TEXTURE_RECT_INDEX: return TGSI_TEXTURE_RECT;
default:
debug_assert( 0 );
return TGSI_TEXTURE_1D;
}
}
static struct ureg_dst
translate_dst( struct st_translate *t,
const struct prog_dst_register *DstReg,
boolean saturate )
{
struct ureg_dst dst = dst_register( t,
DstReg->File,
DstReg->Index );
dst = ureg_writemask( dst,
DstReg->WriteMask );
if (saturate)
dst = ureg_saturate( dst );
if (DstReg->RelAddr)
dst = ureg_dst_indirect( dst, ureg_src(t->address[0]) );
return dst;
}
static struct ureg_src
translate_src( struct st_translate *t,
const struct prog_src_register *SrcReg )
{
struct ureg_src src = src_register( t, SrcReg->File, SrcReg->Index );
src = ureg_swizzle( src,
GET_SWZ( SrcReg->Swizzle, 0 ) & 0x3,
GET_SWZ( SrcReg->Swizzle, 1 ) & 0x3,
GET_SWZ( SrcReg->Swizzle, 2 ) & 0x3,
GET_SWZ( SrcReg->Swizzle, 3 ) & 0x3);
if (SrcReg->Negate == NEGATE_XYZW)
src = ureg_negate(src);
if (SrcReg->Abs)
src = ureg_abs(src);
if (SrcReg->RelAddr)
src = ureg_src_indirect( src, ureg_src(t->address[0]));
return src;
}
static struct ureg_src swizzle_4v( struct ureg_src src,
const unsigned *swz )
{
return ureg_swizzle( src, swz[0], swz[1], swz[2], swz[3] );
}
/**
* Translate SWZ instructions into a single MAD. EG:
*
* SWZ dst, src.x-y10
*
* becomes:
*
* MAD dst {1,-1,0,0}, src.xyxx, {0,0,1,0}
*/
static void emit_swz( struct st_translate *t,
struct ureg_dst dst,
const struct prog_src_register *SrcReg )
{
struct ureg_program *ureg = t->ureg;
struct ureg_src src = src_register( t, SrcReg->File, SrcReg->Index );
unsigned negate_mask = SrcReg->Negate;
unsigned one_mask = ((GET_SWZ(SrcReg->Swizzle, 0) == SWIZZLE_ONE) << 0 |
(GET_SWZ(SrcReg->Swizzle, 1) == SWIZZLE_ONE) << 1 |
(GET_SWZ(SrcReg->Swizzle, 2) == SWIZZLE_ONE) << 2 |
(GET_SWZ(SrcReg->Swizzle, 3) == SWIZZLE_ONE) << 3);
unsigned zero_mask = ((GET_SWZ(SrcReg->Swizzle, 0) == SWIZZLE_ZERO) << 0 |
(GET_SWZ(SrcReg->Swizzle, 1) == SWIZZLE_ZERO) << 1 |
(GET_SWZ(SrcReg->Swizzle, 2) == SWIZZLE_ZERO) << 2 |
(GET_SWZ(SrcReg->Swizzle, 3) == SWIZZLE_ZERO) << 3);
unsigned negative_one_mask = one_mask & negate_mask;
unsigned positive_one_mask = one_mask & ~negate_mask;
struct ureg_src imm;
unsigned i;
unsigned mul_swizzle[4] = {0,0,0,0};
unsigned add_swizzle[4] = {0,0,0,0};
unsigned src_swizzle[4] = {0,0,0,0};
boolean need_add = FALSE;
boolean need_mul = FALSE;
if (dst.WriteMask == 0)
return;
/* Is this just a MOV?
*/
if (zero_mask == 0 &&
one_mask == 0 &&
(negate_mask == 0 || negate_mask == TGSI_WRITEMASK_XYZW))
{
ureg_MOV( ureg, dst, translate_src( t, SrcReg ));
return;
}
#define IMM_ZERO 0
#define IMM_ONE 1
#define IMM_NEG_ONE 2
imm = ureg_imm3f( ureg, 0, 1, -1 );
for (i = 0; i < 4; i++) {
unsigned bit = 1 << i;
if (dst.WriteMask & bit) {
if (positive_one_mask & bit) {
mul_swizzle[i] = IMM_ZERO;
add_swizzle[i] = IMM_ONE;
need_add = TRUE;
}
else if (negative_one_mask & bit) {
mul_swizzle[i] = IMM_ZERO;
add_swizzle[i] = IMM_NEG_ONE;
need_add = TRUE;
}
else if (zero_mask & bit) {
mul_swizzle[i] = IMM_ZERO;
add_swizzle[i] = IMM_ZERO;
need_add = TRUE;
}
else {
add_swizzle[i] = IMM_ZERO;
src_swizzle[i] = GET_SWZ(SrcReg->Swizzle, i);
need_mul = TRUE;
if (negate_mask & bit) {
mul_swizzle[i] = IMM_NEG_ONE;
}
else {
mul_swizzle[i] = IMM_ONE;
}
}
}
}
if (need_mul && need_add) {
ureg_MAD( ureg,
dst,
swizzle_4v( src, src_swizzle ),
swizzle_4v( imm, mul_swizzle ),
swizzle_4v( imm, add_swizzle ) );
}
else if (need_mul) {
ureg_MUL( ureg,
dst,
swizzle_4v( src, src_swizzle ),
swizzle_4v( imm, mul_swizzle ) );
}
else if (need_add) {
ureg_MOV( ureg,
dst,
swizzle_4v( imm, add_swizzle ) );
}
else {
debug_assert(0);
}
#undef IMM_ZERO
#undef IMM_ONE
#undef IMM_NEG_ONE
}
static unsigned
translate_opcode( unsigned op )
{
switch( op ) {
case OPCODE_ARL:
return TGSI_OPCODE_ARL;
case OPCODE_ABS:
return TGSI_OPCODE_ABS;
case OPCODE_ADD:
return TGSI_OPCODE_ADD;
case OPCODE_BGNLOOP:
return TGSI_OPCODE_BGNLOOP;
case OPCODE_BGNSUB:
return TGSI_OPCODE_BGNSUB;
case OPCODE_BRA:
return TGSI_OPCODE_BRA;
case OPCODE_BRK:
return TGSI_OPCODE_BRK;
case OPCODE_CAL:
return TGSI_OPCODE_CAL;
case OPCODE_CMP:
return TGSI_OPCODE_CMP;
case OPCODE_CONT:
return TGSI_OPCODE_CONT;
case OPCODE_COS:
return TGSI_OPCODE_COS;
case OPCODE_DDX:
return TGSI_OPCODE_DDX;
case OPCODE_DDY:
return TGSI_OPCODE_DDY;
case OPCODE_DP2:
return TGSI_OPCODE_DP2;
case OPCODE_DP2A:
return TGSI_OPCODE_DP2A;
case OPCODE_DP3:
return TGSI_OPCODE_DP3;
case OPCODE_DP4:
return TGSI_OPCODE_DP4;
case OPCODE_DPH:
return TGSI_OPCODE_DPH;
case OPCODE_DST:
return TGSI_OPCODE_DST;
case OPCODE_ELSE:
return TGSI_OPCODE_ELSE;
case OPCODE_ENDIF:
return TGSI_OPCODE_ENDIF;
case OPCODE_ENDLOOP:
return TGSI_OPCODE_ENDLOOP;
case OPCODE_ENDSUB:
return TGSI_OPCODE_ENDSUB;
case OPCODE_EX2:
return TGSI_OPCODE_EX2;
case OPCODE_EXP:
return TGSI_OPCODE_EXP;
case OPCODE_FLR:
return TGSI_OPCODE_FLR;
case OPCODE_FRC:
return TGSI_OPCODE_FRC;
case OPCODE_IF:
return TGSI_OPCODE_IF;
case OPCODE_TRUNC:
return TGSI_OPCODE_TRUNC;
case OPCODE_KIL:
return TGSI_OPCODE_KIL;
case OPCODE_KIL_NV:
return TGSI_OPCODE_KILP;
case OPCODE_LG2:
return TGSI_OPCODE_LG2;
case OPCODE_LOG:
return TGSI_OPCODE_LOG;
case OPCODE_LIT:
return TGSI_OPCODE_LIT;
case OPCODE_LRP:
return TGSI_OPCODE_LRP;
case OPCODE_MAD:
return TGSI_OPCODE_MAD;
case OPCODE_MAX:
return TGSI_OPCODE_MAX;
case OPCODE_MIN:
return TGSI_OPCODE_MIN;
case OPCODE_MOV:
return TGSI_OPCODE_MOV;
case OPCODE_MUL:
return TGSI_OPCODE_MUL;
case OPCODE_NOP:
return TGSI_OPCODE_NOP;
case OPCODE_NRM3:
return TGSI_OPCODE_NRM;
case OPCODE_NRM4:
return TGSI_OPCODE_NRM4;
case OPCODE_POW:
return TGSI_OPCODE_POW;
case OPCODE_RCP:
return TGSI_OPCODE_RCP;
case OPCODE_RET:
return TGSI_OPCODE_RET;
case OPCODE_RSQ:
return TGSI_OPCODE_RSQ;
case OPCODE_SCS:
return TGSI_OPCODE_SCS;
case OPCODE_SEQ:
return TGSI_OPCODE_SEQ;
case OPCODE_SGE:
return TGSI_OPCODE_SGE;
case OPCODE_SGT:
return TGSI_OPCODE_SGT;
case OPCODE_SIN:
return TGSI_OPCODE_SIN;
case OPCODE_SLE:
return TGSI_OPCODE_SLE;
case OPCODE_SLT:
return TGSI_OPCODE_SLT;
case OPCODE_SNE:
return TGSI_OPCODE_SNE;
case OPCODE_SSG:
return TGSI_OPCODE_SSG;
case OPCODE_SUB:
return TGSI_OPCODE_SUB;
case OPCODE_TEX:
return TGSI_OPCODE_TEX;
case OPCODE_TXB:
return TGSI_OPCODE_TXB;
case OPCODE_TXD:
return TGSI_OPCODE_TXD;
case OPCODE_TXL:
return TGSI_OPCODE_TXL;
case OPCODE_TXP:
return TGSI_OPCODE_TXP;
case OPCODE_XPD:
return TGSI_OPCODE_XPD;
case OPCODE_END:
return TGSI_OPCODE_END;
default:
debug_assert( 0 );
return TGSI_OPCODE_NOP;
}
}
static void
compile_instruction(
struct st_translate *t,
const struct prog_instruction *inst )
{
struct ureg_program *ureg = t->ureg;
GLuint i;
struct ureg_dst dst[1];
struct ureg_src src[4];
unsigned num_dst;
unsigned num_src;
num_dst = _mesa_num_inst_dst_regs( inst->Opcode );
num_src = _mesa_num_inst_src_regs( inst->Opcode );
if (num_dst)
dst[0] = translate_dst( t,
&inst->DstReg,
inst->SaturateMode );
for (i = 0; i < num_src; i++)
src[i] = translate_src( t, &inst->SrcReg[i] );
switch( inst->Opcode ) {
case OPCODE_SWZ:
emit_swz( t, dst[0], &inst->SrcReg[0] );
return;
case OPCODE_BGNLOOP:
case OPCODE_CAL:
case OPCODE_ELSE:
case OPCODE_ENDLOOP:
case OPCODE_IF:
debug_assert(num_dst == 0);
ureg_label_insn( ureg,
translate_opcode( inst->Opcode ),
src, num_src,
get_label( t, inst->BranchTarget ));
return;
case OPCODE_TEX:
case OPCODE_TXB:
case OPCODE_TXD:
case OPCODE_TXL:
case OPCODE_TXP:
src[num_src++] = t->samplers[inst->TexSrcUnit];
ureg_tex_insn( ureg,
translate_opcode( inst->Opcode ),
dst, num_dst,
translate_texture_target( inst->TexSrcTarget,
inst->TexShadow ),
src, num_src );
return;
case OPCODE_SCS:
dst[0] = ureg_writemask(dst[0], TGSI_WRITEMASK_XY );
ureg_insn( ureg,
translate_opcode( inst->Opcode ),
dst, num_dst,
src, num_src );
break;
case OPCODE_XPD:
dst[0] = ureg_writemask(dst[0], TGSI_WRITEMASK_XYZ );
ureg_insn( ureg,
translate_opcode( inst->Opcode ),
dst, num_dst,
src, num_src );
break;
case OPCODE_NOISE1:
case OPCODE_NOISE2:
case OPCODE_NOISE3:
case OPCODE_NOISE4:
/* At some point, a motivated person could add a better
* implementation of noise. Currently not even the nvidia
* binary drivers do anything more than this. In any case, the
* place to do this is in the GL state tracker, not the poor
* driver.
*/
ureg_MOV( ureg, dst[0], ureg_imm1f(ureg, 0.5) );
break;
default:
ureg_insn( ureg,
translate_opcode( inst->Opcode ),
dst, num_dst,
src, num_src );
break;
}
}
/**
* Emit the TGSI instructions for inverting the WPOS y coordinate.
*/
static void
emit_inverted_wpos( struct st_translate *t,
const struct gl_program *program )
{
struct ureg_program *ureg = t->ureg;
/* Fragment program uses fragment position input.
* Need to replace instances of INPUT[WPOS] with temp T
* where T = INPUT[WPOS] by y is inverted.
*/
static const gl_state_index winSizeState[STATE_LENGTH]
= { STATE_INTERNAL, STATE_FB_SIZE, 0, 0, 0 };
/* XXX: note we are modifying the incoming shader here! Need to
* do this before emitting the constant decls below, or this
* will be missed:
*/
unsigned winHeightConst = _mesa_add_state_reference(program->Parameters,
winSizeState);
struct ureg_src winsize = ureg_DECL_constant( ureg, winHeightConst );
struct ureg_dst wpos_temp = ureg_DECL_temporary( ureg );
struct ureg_src wpos_input = t->inputs[t->inputMapping[FRAG_ATTRIB_WPOS]];
/* MOV wpos_temp, input[wpos]
*/
ureg_MOV( ureg, wpos_temp, wpos_input );
/* SUB wpos_temp.y, winsize_const, wpos_input
*/
ureg_SUB( ureg,
ureg_writemask(wpos_temp, TGSI_WRITEMASK_Y ),
winsize,
wpos_input);
/* Use wpos_temp as position input from here on:
*/
t->inputs[t->inputMapping[FRAG_ATTRIB_WPOS]] = ureg_src(wpos_temp);
}
/**
* Translate Mesa program to TGSI format.
* \param program the program to translate
* \param numInputs number of input registers used
* \param inputMapping maps Mesa fragment program inputs to TGSI generic
* input indexes
* \param inputSemanticName the TGSI_SEMANTIC flag for each input
* \param inputSemanticIndex the semantic index (ex: which texcoord) for
* each input
* \param interpMode the TGSI_INTERPOLATE_LINEAR/PERSP mode for each input
* \param numOutputs number of output registers used
* \param outputMapping maps Mesa fragment program outputs to TGSI
* generic outputs
* \param outputSemanticName the TGSI_SEMANTIC flag for each output
* \param outputSemanticIndex the semantic index (ex: which texcoord) for
* each output
*
* \return array of translated tokens, caller's responsibility to free
*/
const struct tgsi_token *
st_translate_mesa_program(
GLcontext *ctx,
uint procType,
const struct gl_program *program,
GLuint numInputs,
const GLuint inputMapping[],
const ubyte inputSemanticName[],
const ubyte inputSemanticIndex[],
const GLuint interpMode[],
const GLbitfield inputFlags[],
GLuint numOutputs,
const GLuint outputMapping[],
const ubyte outputSemanticName[],
const ubyte outputSemanticIndex[],
const GLbitfield outputFlags[] )
{
struct st_translate translate, *t;
struct ureg_program *ureg;
const struct tgsi_token *tokens = NULL;
unsigned i;
t = &translate;
memset(t, 0, sizeof *t);
t->procType = procType;
t->inputMapping = inputMapping;
t->outputMapping = outputMapping;
t->ureg = ureg_create( procType );
if (t->ureg == NULL)
return NULL;
ureg = t->ureg;
/*_mesa_print_program(program);*/
/*
* Declare input attributes.
*/
if (procType == TGSI_PROCESSOR_FRAGMENT) {
for (i = 0; i < numInputs; i++) {
t->inputs[i] = ureg_DECL_fs_input(ureg,
inputSemanticName[i],
inputSemanticIndex[i],
interpMode[i]);
}
if (program->InputsRead & FRAG_BIT_WPOS) {
/* Must do this after setting up t->inputs, and before
* emitting constant references, below:
*/
emit_inverted_wpos( t, program );
}
/*
* Declare output attributes.
*/
for (i = 0; i < numOutputs; i++) {
switch (outputSemanticName[i]) {
case TGSI_SEMANTIC_POSITION:
t->outputs[i] = ureg_DECL_output( ureg,
TGSI_SEMANTIC_POSITION, /* Z / Depth */
outputSemanticIndex[i] );
t->outputs[i] = ureg_writemask( t->outputs[i],
TGSI_WRITEMASK_Z );
break;
case TGSI_SEMANTIC_COLOR:
t->outputs[i] = ureg_DECL_output( ureg,
TGSI_SEMANTIC_COLOR,
outputSemanticIndex[i] );
break;
default:
debug_assert(0);
return 0;
}
}
}
else {
for (i = 0; i < numInputs; i++) {
t->inputs[i] = ureg_DECL_vs_input(ureg, i);
}
for (i = 0; i < numOutputs; i++) {
t->outputs[i] = ureg_DECL_output( ureg,
outputSemanticName[i],
outputSemanticIndex[i] );
}
}
/* Declare address register.
*/
if (program->NumAddressRegs > 0) {
debug_assert( program->NumAddressRegs == 1 );
t->address[0] = ureg_DECL_address( ureg );
}
/* Emit constants and immediates. Mesa uses a single index space
* for these, so we put all the translated regs in t->constants.
*/
if (program->Parameters) {
t->constants = CALLOC( program->Parameters->NumParameters,
sizeof t->constants[0] );
if (t->constants == NULL)
goto out;
for (i = 0; i < program->Parameters->NumParameters; i++) {
switch (program->Parameters->Parameters[i].Type) {
case PROGRAM_ENV_PARAM:
case PROGRAM_STATE_VAR:
case PROGRAM_NAMED_PARAM:
case PROGRAM_UNIFORM:
t->constants[i] = ureg_DECL_constant( ureg, i );
break;
/* Emit immediates only when there is no address register
* in use. FIXME: Be smarter and recognize param arrays:
* indirect addressing is only valid within the referenced
* array.
*/
case PROGRAM_CONSTANT:
if (program->NumAddressRegs > 0)
t->constants[i] = ureg_DECL_constant( ureg, i );
else
t->constants[i] =
ureg_DECL_immediate( ureg,
program->Parameters->ParameterValues[i],
4 );
break;
default:
break;
}
}
}
/* texture samplers */
for (i = 0; i < ctx->Const.MaxTextureImageUnits; i++) {
if (program->SamplersUsed & (1 << i)) {
t->samplers[i] = ureg_DECL_sampler( ureg, i );
}
}
/* Emit each instruction in turn:
*/
for (i = 0; i < program->NumInstructions; i++) {
set_insn_start( t, ureg_get_instruction_number( ureg ));
compile_instruction( t, &program->Instructions[i] );
}
/* Fix up all emitted labels:
*/
for (i = 0; i < t->labels_count; i++) {
ureg_fixup_label( ureg,
t->labels[i].token,
t->insn[t->labels[i].branch_target] );
}
tokens = ureg_get_tokens( ureg, NULL );
ureg_destroy( ureg );
out:
FREE(t->insn);
FREE(t->labels);
FREE(t->constants);
if (t->error) {
debug_printf("%s: translate error flag set\n", __FUNCTION__);
FREE((void *)tokens);
tokens = NULL;
}
if (!tokens) {
debug_printf("%s: failed to translate Mesa program:\n", __FUNCTION__);
_mesa_print_program(program);
debug_assert(0);
}
return tokens;
}
/**
* Tokens cannot be free with _mesa_free otherwise the builtin gallium
* malloc debugging will get confused.
*/
void
st_free_tokens(const struct tgsi_token *tokens)
{
FREE((void *)tokens);
}