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|
/*
* Copyright (C) 2005 Ben Skeggs.
*
* 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, sublicense, 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 NONINFRINGEMENT.
* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) 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.
*
*/
/*
* Authors:
* Ben Skeggs <darktama@iinet.net.au>
* Jerome Glisse <j.glisse@gmail.com>
*/
/*TODO'S
*
* - COS/SIN/SCS instructions
* - Depth write, WPOS/FOGC inputs
* - FogOption
* - Verify results of opcodes for accuracy, I've only checked them
* in specific cases.
* - and more...
*/
#include "glheader.h"
#include "macros.h"
#include "enums.h"
#include "program.h"
#include "program_instruction.h"
#include "r300_context.h"
#include "r300_fragprog.h"
#include "r300_reg.h"
#define PFS_INVAL 0xFFFFFFFF
#define COMPILE_STATE struct r300_pfs_compile_state *cs = rp->cs
static void dump_program(struct r300_fragment_program *rp);
static void emit_arith(struct r300_fragment_program *rp, int op,
pfs_reg_t dest, int mask,
pfs_reg_t src0, pfs_reg_t src1, pfs_reg_t src2,
int flags);
/***************************************
* begin: useful data structions for fragment program generation
***************************************/
/* description of r300 native hw instructions */
static const struct {
const char *name;
int argc;
int v_op;
int s_op;
} r300_fpop[] = {
{ "MAD", 3, R300_FPI0_OUTC_MAD, R300_FPI2_OUTA_MAD },
{ "DP3", 2, R300_FPI0_OUTC_DP3, R300_FPI2_OUTA_DP4 },
{ "DP4", 2, R300_FPI0_OUTC_DP4, R300_FPI2_OUTA_DP4 },
{ "MIN", 2, R300_FPI0_OUTC_MIN, R300_FPI2_OUTA_MIN },
{ "MAX", 2, R300_FPI0_OUTC_MAX, R300_FPI2_OUTA_MAX },
{ "CMP", 3, R300_FPI0_OUTC_CMP, R300_FPI2_OUTA_CMP },
{ "FRC", 1, R300_FPI0_OUTC_FRC, R300_FPI2_OUTA_FRC },
{ "EX2", 1, R300_FPI0_OUTC_REPL_ALPHA, R300_FPI2_OUTA_EX2 },
{ "LG2", 1, R300_FPI0_OUTC_REPL_ALPHA, R300_FPI2_OUTA_LG2 },
{ "RCP", 1, R300_FPI0_OUTC_REPL_ALPHA, R300_FPI2_OUTA_RCP },
{ "RSQ", 1, R300_FPI0_OUTC_REPL_ALPHA, R300_FPI2_OUTA_RSQ },
{ "REPL_ALPHA", 1, R300_FPI0_OUTC_REPL_ALPHA, PFS_INVAL },
{ "CMPH", 3, R300_FPI0_OUTC_CMPH, PFS_INVAL },
};
#define MAKE_SWZ3(x, y, z) (MAKE_SWIZZLE4(SWIZZLE_##x, \
SWIZZLE_##y, \
SWIZZLE_##z, \
SWIZZLE_ZERO))
#define SLOT_VECTOR (1<<0)
#define SLOT_SCALAR (1<<3)
#define SLOT_BOTH (SLOT_VECTOR|SLOT_SCALAR)
/* vector swizzles r300 can support natively, with a couple of
* cases we handle specially
*
* pfs_reg_t.v_swz/pfs_reg_t.s_swz is an index into this table
**/
static const struct r300_pfs_swizzle {
GLuint hash; /* swizzle value this matches */
GLuint base; /* base value for hw swizzle */
GLuint stride; /* difference in base between arg0/1/2 */
GLuint flags;
} v_swiz[] = {
/* native swizzles */
{ MAKE_SWZ3(X, Y, Z), R300_FPI0_ARGC_SRC0C_XYZ, 4, SLOT_VECTOR },
{ MAKE_SWZ3(X, X, X), R300_FPI0_ARGC_SRC0C_XXX, 4, SLOT_VECTOR },
{ MAKE_SWZ3(Y, Y, Y), R300_FPI0_ARGC_SRC0C_YYY, 4, SLOT_VECTOR },
{ MAKE_SWZ3(Z, Z, Z), R300_FPI0_ARGC_SRC0C_ZZZ, 4, SLOT_VECTOR },
{ MAKE_SWZ3(W, W, W), R300_FPI0_ARGC_SRC0A, 1, SLOT_SCALAR },
{ MAKE_SWZ3(Y, Z, X), R300_FPI0_ARGC_SRC0C_YZX, 1, SLOT_VECTOR },
{ MAKE_SWZ3(Z, X, Y), R300_FPI0_ARGC_SRC0C_ZXY, 1, SLOT_VECTOR },
{ MAKE_SWZ3(W, Z, Y), R300_FPI0_ARGC_SRC0CA_WZY, 1, SLOT_BOTH },
{ MAKE_SWZ3(ONE, ONE, ONE), R300_FPI0_ARGC_ONE, 0, 0},
{ MAKE_SWZ3(ZERO, ZERO, ZERO), R300_FPI0_ARGC_ZERO, 0, 0},
{ PFS_INVAL, R300_FPI0_ARGC_HALF, 0, 0},
{ PFS_INVAL, 0, 0, 0},
};
#define SWIZZLE_XYZ 0
#define SWIZZLE_XXX 1
#define SWIZZLE_YYY 2
#define SWIZZLE_ZZZ 3
#define SWIZZLE_WWW 4
#define SWIZZLE_YZX 5
#define SWIZZLE_ZXY 6
#define SWIZZLE_WZY 7
#define SWIZZLE_111 8
#define SWIZZLE_000 9
#define SWIZZLE_HHH 10
#define SWZ_X_MASK (7 << 0)
#define SWZ_Y_MASK (7 << 3)
#define SWZ_Z_MASK (7 << 6)
#define SWZ_W_MASK (7 << 9)
/* used during matching of non-native swizzles */
static const struct {
GLuint hash; /* used to mask matching swizzle components */
int mask; /* actual outmask */
int count; /* count of components matched */
} s_mask[] = {
{ SWZ_X_MASK|SWZ_Y_MASK|SWZ_Z_MASK, 1|2|4, 3},
{ SWZ_X_MASK|SWZ_Y_MASK, 1|2, 2},
{ SWZ_X_MASK|SWZ_Z_MASK, 1|4, 2},
{ SWZ_Y_MASK|SWZ_Z_MASK, 2|4, 2},
{ SWZ_X_MASK, 1, 1},
{ SWZ_Y_MASK, 2, 1},
{ SWZ_Z_MASK, 4, 1},
{ PFS_INVAL, PFS_INVAL, PFS_INVAL}
};
/* mapping from SWIZZLE_* to r300 native values for scalar insns */
static const struct {
int base; /* hw value of swizzle */
int stride; /* difference between SRC0/1/2 */
GLuint flags;
} s_swiz[] = {
{ R300_FPI2_ARGA_SRC0C_X, 3, SLOT_VECTOR },
{ R300_FPI2_ARGA_SRC0C_Y, 3, SLOT_VECTOR },
{ R300_FPI2_ARGA_SRC0C_Z, 3, SLOT_VECTOR },
{ R300_FPI2_ARGA_SRC0A , 1, SLOT_SCALAR },
{ R300_FPI2_ARGA_ZERO , 0, 0 },
{ R300_FPI2_ARGA_ONE , 0, 0 },
{ R300_FPI2_ARGA_HALF , 0, 0 }
};
#define SWIZZLE_HALF 6
/* boiler-plate reg, for convenience */
static const pfs_reg_t undef = {
type: REG_TYPE_TEMP,
index: 0,
v_swz: SWIZZLE_XYZ,
s_swz: SWIZZLE_W,
negate_v: 0,
negate_s: 0,
absolute: 0,
no_use: GL_FALSE,
valid: GL_FALSE
};
/* constant one source */
static const pfs_reg_t pfs_one = {
type: REG_TYPE_CONST,
index: 0,
v_swz: SWIZZLE_111,
s_swz: SWIZZLE_ONE,
valid: GL_TRUE
};
/* constant half source */
static const pfs_reg_t pfs_half = {
type: REG_TYPE_CONST,
index: 0,
v_swz: SWIZZLE_HHH,
s_swz: SWIZZLE_HALF,
valid: GL_TRUE
};
/* constant zero source */
static const pfs_reg_t pfs_zero = {
type: REG_TYPE_CONST,
index: 0,
v_swz: SWIZZLE_000,
s_swz: SWIZZLE_ZERO,
valid: GL_TRUE
};
/***************************************
* end: data structures
***************************************/
#define ERROR(fmt, args...) do { \
fprintf(stderr, "%s::%s(): " fmt "\n",\
__FILE__, __func__, ##args); \
rp->error = GL_TRUE; \
} while(0)
static int get_hw_temp(struct r300_fragment_program *rp)
{
COMPILE_STATE;
int r = ffs(~cs->hwreg_in_use);
if (!r) {
ERROR("Out of hardware temps\n");
return 0;
}
cs->hwreg_in_use |= (1 << --r);
if (r > rp->max_temp_idx)
rp->max_temp_idx = r;
return r;
}
static int get_hw_temp_tex(struct r300_fragment_program *rp)
{
COMPILE_STATE;
int r;
r = ffs(~(cs->hwreg_in_use | cs->used_in_node));
if (!r)
return get_hw_temp(rp); /* Will cause an indirection */
cs->hwreg_in_use |= (1 << --r);
if (r > rp->max_temp_idx)
rp->max_temp_idx = r;
return r;
}
static void free_hw_temp(struct r300_fragment_program *rp, int idx)
{
COMPILE_STATE;
cs->hwreg_in_use &= ~(1<<idx);
}
static pfs_reg_t get_temp_reg(struct r300_fragment_program *rp)
{
COMPILE_STATE;
pfs_reg_t r = undef;
r.index = ffs(~cs->temp_in_use);
if (!r.index) {
ERROR("Out of program temps\n");
return r;
}
cs->temp_in_use |= (1 << --r.index);
cs->temps[r.index].refcount = 0xFFFFFFFF;
cs->temps[r.index].reg = -1;
r.valid = GL_TRUE;
return r;
}
static pfs_reg_t get_temp_reg_tex(struct r300_fragment_program *rp)
{
COMPILE_STATE;
pfs_reg_t r = undef;
r.index = ffs(~cs->temp_in_use);
if (!r.index) {
ERROR("Out of program temps\n");
return r;
}
cs->temp_in_use |= (1 << --r.index);
cs->temps[r.index].refcount = 0xFFFFFFFF;
cs->temps[r.index].reg = get_hw_temp_tex(rp);
r.valid = GL_TRUE;
return r;
}
static void free_temp(struct r300_fragment_program *rp, pfs_reg_t r)
{
COMPILE_STATE;
if (!(cs->temp_in_use & (1<<r.index))) return;
if (r.type == REG_TYPE_TEMP) {
free_hw_temp(rp, cs->temps[r.index].reg);
cs->temps[r.index].reg = -1;
cs->temp_in_use &= ~(1<<r.index);
} else if (r.type == REG_TYPE_INPUT) {
free_hw_temp(rp, cs->inputs[r.index].reg);
cs->inputs[r.index].reg = -1;
}
}
static pfs_reg_t emit_param4fv(struct r300_fragment_program *rp,
GLfloat *values)
{
pfs_reg_t r = undef;
r.type = REG_TYPE_CONST;
int pidx;
pidx = rp->param_nr++;
r.index = rp->const_nr++;
if (pidx >= PFS_NUM_CONST_REGS || r.index >= PFS_NUM_CONST_REGS) {
ERROR("Out of const/param slots!\n");
return r;
}
rp->param[pidx].idx = r.index;
rp->param[pidx].values = values;
rp->params_uptodate = GL_FALSE;
r.valid = GL_TRUE;
return r;
}
static pfs_reg_t emit_const4fv(struct r300_fragment_program *rp, GLfloat *cp)
{
pfs_reg_t r = undef;
r.type = REG_TYPE_CONST;
r.index = rp->const_nr++;
if (r.index >= PFS_NUM_CONST_REGS) {
ERROR("Out of hw constants!\n");
return r;
}
COPY_4V(rp->constant[r.index], cp);
r.valid = GL_TRUE;
return r;
}
static __inline pfs_reg_t negate(pfs_reg_t r)
{
r.negate_v = 1;
r.negate_s = 1;
return r;
}
/* Hack, to prevent clobbering sources used multiple times when
* emulating non-native instructions
*/
static __inline pfs_reg_t keep(pfs_reg_t r)
{
r.no_use = GL_TRUE;
return r;
}
static __inline pfs_reg_t absolute(pfs_reg_t r)
{
r.absolute = 1;
return r;
}
static int swz_native(struct r300_fragment_program *rp,
pfs_reg_t src, pfs_reg_t *r, GLuint arbneg)
{
/* Native swizzle, nothing to see here */
src.negate_s = (arbneg >> 3) & 1;
if ((arbneg & 0x7) == 0x0) {
src.negate_v = 0;
*r = src;
} else if ((arbneg & 0x7) == 0x7) {
src.negate_v = 1;
*r = src;
} else {
if (!r->valid)
*r = get_temp_reg(rp);
src.negate_v = 1;
emit_arith(rp, PFS_OP_MAD, *r, arbneg & 0x7,
keep(src), pfs_one, pfs_zero, 0);
src.negate_v = 0;
emit_arith(rp, PFS_OP_MAD, *r,
(arbneg ^ 0x7) | WRITEMASK_W,
src, pfs_one, pfs_zero, 0);
}
return 3;
}
static int swz_emit_partial(struct r300_fragment_program *rp, pfs_reg_t src,
pfs_reg_t *r, int mask, int mc, GLuint arbneg)
{
GLuint tmp;
GLuint wmask = 0;
if (!r->valid)
*r = get_temp_reg(rp);
/* A partial match, src.v_swz/mask define what parts of the
* desired swizzle we match */
if (mc + s_mask[mask].count == 3) {
wmask = WRITEMASK_W;
src.negate_s = (arbneg >> 3) & 1;
}
tmp = arbneg & s_mask[mask].mask;
if (tmp) {
tmp = tmp ^ s_mask[mask].mask;
if (tmp) {
src.negate_v = 1;
emit_arith(rp, PFS_OP_MAD, *r,
arbneg & s_mask[mask].mask,
keep(src), pfs_one, pfs_zero, 0);
src.negate_v = 0;
if (!wmask) src.no_use = GL_TRUE;
else src.no_use = GL_FALSE;
emit_arith(rp, PFS_OP_MAD, *r, tmp | wmask,
src, pfs_one, pfs_zero, 0);
} else {
src.negate_v = 1;
if (!wmask) src.no_use = GL_TRUE;
else src.no_use = GL_FALSE;
emit_arith(rp, PFS_OP_MAD, *r,
(arbneg & s_mask[mask].mask) | wmask,
src, pfs_one, pfs_zero, 0);
src.negate_v = 0;
}
} else {
if (!wmask) src.no_use = GL_TRUE;
else src.no_use = GL_FALSE;
emit_arith(rp, PFS_OP_MAD, *r,
s_mask[mask].mask | wmask,
src, pfs_one, pfs_zero, 0);
}
return s_mask[mask].count;
}
#define swizzle(r, x, y, z, w) do_swizzle(rp, r, \
((SWIZZLE_##x<<0)| \
(SWIZZLE_##y<<3)| \
(SWIZZLE_##z<<6)| \
(SWIZZLE_##w<<9)), \
0)
static pfs_reg_t do_swizzle(struct r300_fragment_program *rp,
pfs_reg_t src, GLuint arbswz, GLuint arbneg)
{
pfs_reg_t r = undef;
int c_mask = 0;
int v_matched = 0;
/* If swizzling from something without an XYZW native swizzle,
* emit result to a temp, and do new swizzle from the temp.
*/
if (src.v_swz != SWIZZLE_XYZ || src.s_swz != SWIZZLE_W) {
pfs_reg_t temp = get_temp_reg(rp);
emit_arith(rp, PFS_OP_MAD, temp, WRITEMASK_XYZW, src, pfs_one,
pfs_zero, 0);
src = temp;
}
src.s_swz = GET_SWZ(arbswz, 3);
do {
do {
#define CUR_HASH (v_swiz[src.v_swz].hash & s_mask[c_mask].hash)
if (CUR_HASH == (arbswz & s_mask[c_mask].hash)) {
if (s_mask[c_mask].count == 3)
v_matched += swz_native(rp, src, &r,
arbneg);
else
v_matched += swz_emit_partial(rp, src,
&r,
c_mask,
v_matched,
arbneg);
if (v_matched == 3)
return r;
/* Fill with something invalid.. all 0's was
* wrong before, matched SWIZZLE_X. So all
* 1's will be okay for now */
arbswz |= (PFS_INVAL & s_mask[c_mask].hash);
}
} while(v_swiz[++src.v_swz].hash != PFS_INVAL);
src.v_swz = SWIZZLE_XYZ;
} while (s_mask[++c_mask].hash != PFS_INVAL);
ERROR("should NEVER get here\n");
return r;
}
static pfs_reg_t t_src(struct r300_fragment_program *rp,
struct prog_src_register fpsrc)
{
pfs_reg_t r = undef;
switch (fpsrc.File) {
case PROGRAM_TEMPORARY:
r.index = fpsrc.Index;
r.valid = GL_TRUE;
break;
case PROGRAM_INPUT:
r.index = fpsrc.Index;
r.type = REG_TYPE_INPUT;
r.valid = GL_TRUE;
break;
case PROGRAM_LOCAL_PARAM:
r = emit_param4fv(rp,
rp->mesa_program.Base.LocalParams[fpsrc.Index]);
break;
case PROGRAM_ENV_PARAM:
r = emit_param4fv(rp,
rp->ctx->FragmentProgram.Parameters[fpsrc.Index]);
break;
case PROGRAM_STATE_VAR:
case PROGRAM_NAMED_PARAM:
r = emit_param4fv(rp,
rp->mesa_program.Base.Parameters->ParameterValues[fpsrc.Index]);
break;
default:
ERROR("unknown SrcReg->File %x\n", fpsrc.File);
return r;
}
/* no point swizzling ONE/ZERO/HALF constants... */
if (r.v_swz < SWIZZLE_111 || r.s_swz < SWIZZLE_ZERO)
r = do_swizzle(rp, r, fpsrc.Swizzle, fpsrc.NegateBase);
return r;
}
static pfs_reg_t t_scalar_src(struct r300_fragment_program *rp,
struct prog_src_register fpsrc)
{
struct prog_src_register src = fpsrc;
int sc = GET_SWZ(fpsrc.Swizzle, 0); /* X */
printf("sc %d\n",sc);
src.Swizzle = ((sc<<0)|(sc<<3)|(sc<<6)|(sc<<9));
return t_src(rp, src);
}
static pfs_reg_t t_dst(struct r300_fragment_program *rp,
struct prog_dst_register dest) {
pfs_reg_t r = undef;
switch (dest.File) {
case PROGRAM_TEMPORARY:
r.index = dest.Index;
r.valid = GL_TRUE;
return r;
case PROGRAM_OUTPUT:
r.type = REG_TYPE_OUTPUT;
switch (dest.Index) {
case FRAG_RESULT_COLR:
case FRAG_RESULT_DEPR:
r.index = dest.Index;
r.valid = GL_TRUE;
return r;
default:
ERROR("Bad DstReg->Index 0x%x\n", dest.Index);
return r;
}
default:
ERROR("Bad DstReg->File 0x%x\n", dest.File);
return r;
}
}
static int t_hw_src(struct r300_fragment_program *rp, pfs_reg_t src,
GLboolean tex)
{
COMPILE_STATE;
int idx;
switch (src.type) {
case REG_TYPE_TEMP:
/* NOTE: if reg==-1 here, a source is being read that
* hasn't been written to. Undefined results */
if (cs->temps[src.index].reg == -1)
cs->temps[src.index].reg = get_hw_temp(rp);
idx = cs->temps[src.index].reg;
if (!src.no_use && (--cs->temps[src.index].refcount == 0))
free_temp(rp, src);
break;
case REG_TYPE_INPUT:
idx = cs->inputs[src.index].reg;
if (!src.no_use && (--cs->inputs[src.index].refcount == 0))
free_hw_temp(rp, cs->inputs[src.index].reg);
break;
case REG_TYPE_CONST:
return (src.index | SRC_CONST);
default:
ERROR("Invalid type for source reg\n");
return (0 | SRC_CONST);
}
if (!tex) cs->used_in_node |= (1 << idx);
return idx;
}
static int t_hw_dst(struct r300_fragment_program *rp, pfs_reg_t dest,
GLboolean tex)
{
COMPILE_STATE;
int idx;
assert(dest.valid);
switch (dest.type) {
case REG_TYPE_TEMP:
if (cs->temps[dest.index].reg == -1) {
if (!tex)
cs->temps[dest.index].reg = get_hw_temp(rp);
else
cs->temps[dest.index].reg = get_hw_temp_tex(rp);
}
idx = cs->temps[dest.index].reg;
if (!dest.no_use && (--cs->temps[dest.index].refcount == 0))
free_temp(rp, dest);
cs->dest_in_node |= (1 << idx);
cs->used_in_node |= (1 << idx);
break;
case REG_TYPE_OUTPUT:
switch (dest.index) {
case FRAG_RESULT_COLR:
rp->node[rp->cur_node].flags |= R300_PFS_NODE_OUTPUT_COLOR;
break;
case FRAG_RESULT_DEPR:
rp->node[rp->cur_node].flags |= R300_PFS_NODE_OUTPUT_DEPTH;
break;
}
return dest.index;
break;
default:
ERROR("invalid dest reg type %d\n", dest.type);
return 0;
}
return idx;
}
static void emit_nop(struct r300_fragment_program *rp, GLuint mask,
GLboolean sync)
{
COMPILE_STATE;
if (sync)
cs->v_pos = cs->s_pos = MAX2(cs->v_pos, cs->s_pos);
if (mask & WRITEMASK_XYZ) {
rp->alu.inst[cs->v_pos].inst0 = NOP_INST0;
rp->alu.inst[cs->v_pos].inst1 = NOP_INST1;
cs->v_pos++;
}
if (mask & WRITEMASK_W) {
rp->alu.inst[cs->s_pos].inst2 = NOP_INST2;
rp->alu.inst[cs->s_pos].inst3 = NOP_INST3;
cs->s_pos++;
}
}
static void emit_tex(struct r300_fragment_program *rp,
struct prog_instruction *fpi,
int opcode)
{
COMPILE_STATE;
pfs_reg_t coord = t_src(rp, fpi->SrcReg[0]);
pfs_reg_t dest = undef, rdest = undef;
GLuint din = cs->dest_in_node, uin = cs->used_in_node;
int unit = fpi->TexSrcUnit;
int hwsrc, hwdest;
/* Resolve source/dest to hardware registers */
hwsrc = t_hw_src(rp, coord, GL_TRUE);
if (opcode != R300_FPITX_OP_KIL) {
dest = t_dst(rp, fpi->DstReg);
/* r300 doesn't seem to be able to do TEX->output reg */
if (dest.type == REG_TYPE_OUTPUT) {
rdest = dest;
dest = get_temp_reg_tex(rp);
}
hwdest = t_hw_dst(rp, dest, GL_TRUE);
/* Use a temp that hasn't been used in this node, rather
* than causing an indirection
*/
if (uin & (1 << hwdest)) {
free_hw_temp(rp, hwdest);
hwdest = get_hw_temp_tex(rp);
cs->temps[dest.index].reg = hwdest;
}
} else {
hwdest = 0;
unit = 0;
}
/* Indirection if source has been written in this node, or if the
* dest has been read/written in this node
*/
if ((coord.type != REG_TYPE_CONST && (din & (1<<hwsrc))) ||
(uin & (1<<hwdest))) {
/* Finish off current node */
cs->v_pos = cs->s_pos = MAX2(cs->v_pos, cs->s_pos);
if (rp->node[rp->cur_node].alu_offset == cs->v_pos) {
/* No alu instructions in the node? Emit a NOP. */
emit_nop(rp, WRITEMASK_XYZW, GL_TRUE);
cs->v_pos = cs->s_pos = MAX2(cs->v_pos, cs->s_pos);
}
rp->node[rp->cur_node].alu_end =
cs->v_pos - rp->node[rp->cur_node].alu_offset - 1;
assert(rp->node[rp->cur_node].alu_end >= 0);
if (++rp->cur_node >= PFS_MAX_TEX_INDIRECT) {
ERROR("too many levels of texture indirection\n");
return;
}
/* Start new node */
rp->node[rp->cur_node].tex_offset = rp->tex.length;
rp->node[rp->cur_node].alu_offset = cs->v_pos;
rp->node[rp->cur_node].tex_end = -1;
rp->node[rp->cur_node].alu_end = -1;
rp->node[rp->cur_node].flags = 0;
cs->used_in_node = 0;
cs->dest_in_node = 0;
}
if (rp->cur_node == 0)
rp->first_node_has_tex = 1;
rp->tex.inst[rp->tex.length++] = 0
| (hwsrc << R300_FPITX_SRC_SHIFT)
| (hwdest << R300_FPITX_DST_SHIFT)
| (unit << R300_FPITX_IMAGE_SHIFT)
/* not entirely sure about this */
| (opcode << R300_FPITX_OPCODE_SHIFT);
cs->dest_in_node |= (1 << hwdest);
if (coord.type != REG_TYPE_CONST)
cs->used_in_node |= (1 << hwsrc);
rp->node[rp->cur_node].tex_end++;
/* Copy from temp to output if needed */
if (rdest.valid) {
emit_arith(rp, PFS_OP_MAD, rdest, WRITEMASK_XYZW, dest,
pfs_one, pfs_zero, 0);
free_temp(rp, dest);
}
}
/* Add sources to FPI1/FPI3 lists. If source is already on list,
* reuse the index instead of wasting a source.
*/
static int add_src(struct r300_fragment_program *rp, int reg, int pos,
int srcmask)
{
COMPILE_STATE;
int csm, i;
/* Look for matches */
for (i=0,csm=srcmask; i<3; i++,csm=csm<<1) {
/* If sources have been allocated in this position(s)... */
if ((cs->slot[pos].umask & csm) == csm) {
/* ... and the register number(s) match, re-use the
source */
if (srcmask == SLOT_VECTOR &&
cs->slot[pos].vsrc[i] == reg)
return i;
if (srcmask == SLOT_SCALAR &&
cs->slot[pos].ssrc[i] == reg)
return i;
if (srcmask == SLOT_BOTH &&
cs->slot[pos].vsrc[i] == reg &&
cs->slot[pos].ssrc[i] == reg)
return i;
}
}
/* Look for free spaces */
for (i=0,csm=srcmask; i<3; i++,csm=csm<<1) {
/* If the position(s) haven't been allocated */
if ((cs->slot[pos].umask & csm) == 0) {
cs->slot[pos].umask |= csm;
if (srcmask & SLOT_VECTOR)
cs->slot[pos].vsrc[i] = reg;
if (srcmask & SLOT_SCALAR)
cs->slot[pos].ssrc[i] = reg;
return i;
}
}
//ERROR("Failed to allocate sources in FPI1/FPI3!\n");
return 0;
}
/* Determine whether or not to position opcode in the same ALU slot for both
* vector and scalar portions of an instruction.
*
* It's not necessary to force the first case, but it makes disassembled
* shaders easier to read.
*/
static GLboolean force_same_slot(int vop, int sop,
GLboolean emit_vop, GLboolean emit_sop,
int argc, pfs_reg_t *src)
{
int i;
if (emit_vop && emit_sop)
return GL_TRUE;
if (emit_vop && vop == R300_FPI0_OUTC_REPL_ALPHA)
return GL_TRUE;
if (emit_vop) {
for (i=0;i<argc;i++)
if (src[i].v_swz == SWIZZLE_WZY)
return GL_TRUE;
}
return GL_FALSE;
}
static void emit_arith(struct r300_fragment_program *rp, int op,
pfs_reg_t dest, int mask,
pfs_reg_t src0, pfs_reg_t src1, pfs_reg_t src2,
int flags)
{
COMPILE_STATE;
pfs_reg_t src[3] = { src0, src1, src2 };
int hwsrc[3], sswz[3], vswz[3];
int hwdest;
GLboolean emit_vop = GL_FALSE, emit_sop = GL_FALSE;
int vop, sop, argc;
int vpos, spos;
int i;
vop = r300_fpop[op].v_op;
sop = r300_fpop[op].s_op;
argc = r300_fpop[op].argc;
if ((mask & WRITEMASK_XYZ) || vop == R300_FPI0_OUTC_DP3)
emit_vop = GL_TRUE;
if ((mask & WRITEMASK_W) || vop == R300_FPI0_OUTC_REPL_ALPHA)
emit_sop = GL_TRUE;
if (dest.type == REG_TYPE_OUTPUT && dest.index == FRAG_RESULT_DEPR)
emit_vop = GL_FALSE;
if (force_same_slot(vop, sop, emit_vop, emit_sop, argc, src)) {
vpos = spos = MAX2(cs->v_pos, cs->s_pos);
} else {
vpos = cs->v_pos;
spos = cs->s_pos;
/* Here is where we'd decide on where a safe place is to
* combine this instruction with a previous one.
*
* This is extremely simple for now.. if a source depends
* on the opposite stream, force the same instruction.
*/
for (i=0;i<3;i++) {
if (emit_vop &&
(v_swiz[src[i].v_swz].flags & SLOT_SCALAR)) {
vpos = spos = MAX2(vpos, spos);
break;
}
if (emit_sop &&
(s_swiz[src[i].s_swz].flags & SLOT_VECTOR)) {
vpos = spos = MAX2(vpos, spos);
break;
}
}
}
/* - Convert src->hwsrc, record for FPI1/FPI3
* - Determine ARG parts of FPI0/FPI2, unused args are filled
* with ARG_ZERO.
*/
for (i=0;i<3;i++) {
int srcpos;
if (i >= argc) {
vswz[i] = R300_FPI0_ARGC_ZERO;
sswz[i] = R300_FPI2_ARGA_ZERO;
continue;
}
hwsrc[i] = t_hw_src(rp, src[i], GL_FALSE);
if (emit_vop && vop != R300_FPI0_OUTC_REPL_ALPHA) {
srcpos = add_src(rp, hwsrc[i], vpos,
v_swiz[src[i].v_swz].flags);
vswz[i] = (v_swiz[src[i].v_swz].base +
(srcpos * v_swiz[src[i].v_swz].stride)) |
(src[i].negate_v ? ARG_NEG : 0) |
(src[i].absolute ? ARG_ABS : 0);
} else vswz[i] = R300_FPI0_ARGC_ZERO;
if (emit_sop) {
srcpos = add_src(rp, hwsrc[i], spos,
s_swiz[src[i].s_swz].flags);
sswz[i] = (s_swiz[src[i].s_swz].base +
(srcpos * s_swiz[src[i].s_swz].stride)) |
(src[i].negate_s ? ARG_NEG : 0) |
(src[i].absolute ? ARG_ABS : 0);
} else sswz[i] = R300_FPI2_ARGA_ZERO;
}
hwdest = t_hw_dst(rp, dest, GL_FALSE);
if (flags & PFS_FLAG_SAT) {
vop |= R300_FPI0_OUTC_SAT;
sop |= R300_FPI2_OUTA_SAT;
}
/* Throw the pieces together and get FPI0/1 */
rp->alu.inst[vpos].inst1 =
((cs->slot[vpos].vsrc[0] << R300_FPI1_SRC0C_SHIFT) |
(cs->slot[vpos].vsrc[1] << R300_FPI1_SRC1C_SHIFT) |
(cs->slot[vpos].vsrc[2] << R300_FPI1_SRC2C_SHIFT));
if (emit_vop) {
rp->alu.inst[vpos].inst0 = vop |
(vswz[0] << R300_FPI0_ARG0C_SHIFT) |
(vswz[1] << R300_FPI0_ARG1C_SHIFT) |
(vswz[2] << R300_FPI0_ARG2C_SHIFT);
rp->alu.inst[vpos].inst1 |= hwdest << R300_FPI1_DSTC_SHIFT;
if (dest.type == REG_TYPE_OUTPUT) {
if (dest.index == FRAG_RESULT_COLR) {
rp->alu.inst[vpos].inst1 |=
(mask & WRITEMASK_XYZ) << R300_FPI1_DSTC_OUTPUT_MASK_SHIFT;
} else assert(0);
} else {
rp->alu.inst[vpos].inst1 |=
(mask & WRITEMASK_XYZ) << R300_FPI1_DSTC_REG_MASK_SHIFT;
}
cs->v_pos = vpos+1;
} else if (spos >= vpos)
rp->alu.inst[spos].inst0 = NOP_INST0;
/* And now FPI2/3 */
rp->alu.inst[spos].inst3 =
((cs->slot[spos].ssrc[0] << R300_FPI3_SRC0A_SHIFT) |
(cs->slot[spos].ssrc[1] << R300_FPI3_SRC1A_SHIFT) |
(cs->slot[spos].ssrc[2] << R300_FPI3_SRC2A_SHIFT));
if (emit_sop) {
rp->alu.inst[spos].inst2 = sop |
sswz[0] << R300_FPI2_ARG0A_SHIFT |
sswz[1] << R300_FPI2_ARG1A_SHIFT |
sswz[2] << R300_FPI2_ARG2A_SHIFT;
if (mask & WRITEMASK_W) {
if (dest.type == REG_TYPE_OUTPUT) {
if (dest.index == FRAG_RESULT_COLR) {
rp->alu.inst[spos].inst3 |=
(hwdest << R300_FPI3_DSTA_SHIFT) | R300_FPI3_DSTA_OUTPUT;
} else if (dest.index == FRAG_RESULT_DEPR) {
rp->alu.inst[spos].inst3 |= R300_FPI3_DSTA_DEPTH;
} else assert(0);
} else {
rp->alu.inst[spos].inst3 |=
(hwdest << R300_FPI3_DSTA_SHIFT) | R300_FPI3_DSTA_REG;
}
}
cs->s_pos = spos+1;
} else if (vpos >= spos)
rp->alu.inst[vpos].inst2 = NOP_INST2;
return;
};
#if 0
static pfs_reg_t get_attrib(struct r300_fragment_program *rp, GLuint attr)
{
struct gl_fragment_program *mp = &rp->mesa_program;
pfs_reg_t r = undef;
if (!(mp->Base.InputsRead & (1<<attr))) {
ERROR("Attribute %d was not provided!\n", attr);
return undef;
}
r.type = REG_TYPE_INPUT;
r.index = attr;
r.valid = GL_TRUE;
return r;
}
#endif
static GLboolean parse_program(struct r300_fragment_program *rp)
{
struct gl_fragment_program *mp = &rp->mesa_program;
const struct prog_instruction *inst = mp->Base.Instructions;
struct prog_instruction *fpi;
pfs_reg_t src[3], dest, temp;
pfs_reg_t cnst;
int flags, mask = 0;
GLfloat cnstv[4] = {0.0, 0.0, 0.0, 0.0};
if (!inst || inst[0].Opcode == OPCODE_END) {
ERROR("empty program?\n");
return GL_FALSE;
}
for (fpi=mp->Base.Instructions; fpi->Opcode != OPCODE_END; fpi++) {
if (fpi->SaturateMode == SATURATE_ZERO_ONE)
flags = PFS_FLAG_SAT;
else
flags = 0;
if (fpi->Opcode != OPCODE_KIL) {
dest = t_dst(rp, fpi->DstReg);
mask = fpi->DstReg.WriteMask;
}
switch (fpi->Opcode) {
case OPCODE_ABS:
src[0] = t_src(rp, fpi->SrcReg[0]);
emit_arith(rp, PFS_OP_MAD, dest, mask,
absolute(src[0]), pfs_one, pfs_zero,
flags);
break;
case OPCODE_ADD:
src[0] = t_src(rp, fpi->SrcReg[0]);
src[1] = t_src(rp, fpi->SrcReg[1]);
emit_arith(rp, PFS_OP_MAD, dest, mask,
src[0], pfs_one, src[1],
flags);
break;
case OPCODE_CMP:
src[0] = t_src(rp, fpi->SrcReg[0]);
src[1] = t_src(rp, fpi->SrcReg[1]);
src[2] = t_src(rp, fpi->SrcReg[2]);
/* ARB_f_p - if src0.c < 0.0 ? src1.c : src2.c
* r300 - if src2.c < 0.0 ? src1.c : src0.c
*/
emit_arith(rp, PFS_OP_CMP, dest, mask,
src[2], src[1], src[0],
flags);
break;
case OPCODE_COS:
/*
* cos using taylor serie:
* cos(x) = 1 - x^2/2! + x^4/4! - x^6/6!
*/
temp = get_temp_reg(rp);
cnstv[0] = 0.5;
cnstv[1] = 0.041666667;
cnstv[2] = 0.001388889;
cnstv[4] = 0.0;
cnst = emit_const4fv(rp, cnstv);
src[0] = t_scalar_src(rp, fpi->SrcReg[0]);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_XYZ,
src[0],
src[0],
pfs_zero,
flags);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_Y | WRITEMASK_Z,
temp, temp,
pfs_zero,
flags);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_Z,
temp,
swizzle(temp, X, X, X, W),
pfs_zero,
flags);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_XYZ,
temp, cnst,
pfs_zero,
flags);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_X,
pfs_one,
pfs_one,
negate(temp),
flags);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_X,
temp,
pfs_one,
swizzle(temp, Y, Y, Y, W),
flags);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_X,
temp,
pfs_one,
negate(swizzle(temp, Z, Z, Z, W)),
flags);
emit_arith(rp, PFS_OP_MAD, dest, mask,
swizzle(temp, X, X, X, X),
pfs_one,
pfs_zero,
flags);
free_temp(rp, temp);
break;
case OPCODE_DP3:
src[0] = t_src(rp, fpi->SrcReg[0]);
src[1] = t_src(rp, fpi->SrcReg[1]);
emit_arith(rp, PFS_OP_DP3, dest, mask,
src[0], src[1], undef,
flags);
break;
case OPCODE_DP4:
src[0] = t_src(rp, fpi->SrcReg[0]);
src[1] = t_src(rp, fpi->SrcReg[1]);
emit_arith(rp, PFS_OP_DP4, dest, mask,
src[0], src[1], undef,
flags);
break;
case OPCODE_DPH:
src[0] = t_src(rp, fpi->SrcReg[0]);
src[1] = t_src(rp, fpi->SrcReg[1]);
/* src0.xyz1 -> temp
* DP4 dest, temp, src1
*/
#if 0
temp = get_temp_reg(rp);
src[0].s_swz = SWIZZLE_ONE;
emit_arith(rp, PFS_OP_MAD, temp, mask,
src[0], pfs_one, pfs_zero,
0);
emit_arith(rp, PFS_OP_DP4, dest, mask,
temp, src[1], undef,
flags);
free_temp(rp, temp);
#else
emit_arith(rp, PFS_OP_DP4, dest, mask,
swizzle(src[0], X, Y, Z, ONE), src[1],
undef, flags);
#endif
break;
case OPCODE_DST:
src[0] = t_src(rp, fpi->SrcReg[0]);
src[1] = t_src(rp, fpi->SrcReg[1]);
/* dest.y = src0.y * src1.y */
if (mask & WRITEMASK_Y)
emit_arith(rp, PFS_OP_MAD, dest, WRITEMASK_Y,
keep(src[0]), keep(src[1]),
pfs_zero, flags);
/* dest.z = src0.z */
if (mask & WRITEMASK_Z)
emit_arith(rp, PFS_OP_MAD, dest, WRITEMASK_Z,
src[0], pfs_one, pfs_zero, flags);
/* result.x = 1.0
* result.w = src1.w */
if (mask & WRITEMASK_XW) {
src[1].v_swz = SWIZZLE_111; /* Cheat.. */
emit_arith(rp, PFS_OP_MAD, dest,
mask & WRITEMASK_XW,
src[1], pfs_one, pfs_zero,
flags);
}
break;
case OPCODE_EX2:
src[0] = t_scalar_src(rp, fpi->SrcReg[0]);
emit_arith(rp, PFS_OP_EX2, dest, mask,
src[0], undef, undef,
flags);
break;
case OPCODE_FLR:
src[0] = t_src(rp, fpi->SrcReg[0]);
temp = get_temp_reg(rp);
/* FRC temp, src0
* MAD dest, src0, 1.0, -temp
*/
emit_arith(rp, PFS_OP_FRC, temp, mask,
keep(src[0]), undef, undef,
0);
emit_arith(rp, PFS_OP_MAD, dest, mask,
src[0], pfs_one, negate(temp),
flags);
free_temp(rp, temp);
break;
case OPCODE_FRC:
src[0] = t_src(rp, fpi->SrcReg[0]);
emit_arith(rp, PFS_OP_FRC, dest, mask,
src[0], undef, undef,
flags);
break;
case OPCODE_KIL:
emit_tex(rp, fpi, R300_FPITX_OP_KIL);
break;
case OPCODE_LG2:
src[0] = t_scalar_src(rp, fpi->SrcReg[0]);
emit_arith(rp, PFS_OP_LG2, dest, mask,
src[0], undef, undef,
flags);
break;
case OPCODE_LIT:
/* LIT
* if (s.x < 0) t.x = 0; else t.x = s.x;
* if (s.y < 0) t.y = 0; else t.y = s.y;
* if (s.w > 128.0) t.w = 128.0; else t.w = s.w;
* if (s.w < -128.0) t.w = -128.0; else t.w = s.w;
* r.x = 1.0
* if (t.x > 0) r.y = pow(t.y, t.w); else r.y = 0;
* Also r.y = 0 if t.y < 0
* For the t.x > 0 FGLRX use the CMPH opcode which
* change the compare to (t.x + 0.5) > 0.5 we may
* save one instruction by doing CMP -t.x
*/
cnstv[0] = cnstv[1] = cnstv[2] = cnstv[4] = 0.50001;
src[0] = t_src(rp, fpi->SrcReg[0]);
temp = get_temp_reg(rp);
cnst = emit_const4fv(rp, cnstv);
emit_arith(rp, PFS_OP_CMP, temp,
WRITEMASK_X | WRITEMASK_Y,
src[0], pfs_zero, src[0], flags);
emit_arith(rp, PFS_OP_MIN, temp, WRITEMASK_Z,
swizzle(keep(src[0]), W, W, W, W),
cnst, undef, flags);
emit_arith(rp, PFS_OP_LG2, temp, WRITEMASK_W,
swizzle(temp, Y, Y, Y, Y),
undef, undef, flags);
emit_arith(rp, PFS_OP_MAX, temp, WRITEMASK_Z,
temp, negate(cnst), undef, flags);
emit_arith(rp, PFS_OP_MAD, temp, WRITEMASK_W,
temp, swizzle(temp, Z, Z, Z, Z),
pfs_zero, flags);
emit_arith(rp, PFS_OP_EX2, temp, WRITEMASK_W,
temp, undef, undef, flags);
emit_arith(rp, PFS_OP_MAD, dest, WRITEMASK_Y,
swizzle(keep(temp), X, X, X, X),
pfs_one, pfs_zero, flags);
#if 0
emit_arith(rp, PFS_OP_MAD, temp, WRITEMASK_X,
temp, pfs_one, pfs_half, flags);
emit_arith(rp, PFS_OP_CMPH, temp, WRITEMASK_Z,
swizzle(keep(temp), W, W, W, W),
pfs_zero, swizzle(keep(temp), X, X, X, X),
flags);
#else
emit_arith(rp, PFS_OP_CMP, temp, WRITEMASK_Z,
pfs_zero,
swizzle(keep(temp), W, W, W, W),
negate(swizzle(keep(temp), X, X, X, X)),
flags);
#endif
emit_arith(rp, PFS_OP_CMP, dest, WRITEMASK_Z,
pfs_zero, temp,
negate(swizzle(keep(temp), Y, Y, Y, Y)),
flags);
emit_arith(rp, PFS_OP_MAD, dest,
WRITEMASK_X | WRITEMASK_W,
pfs_one,
pfs_one,
pfs_zero,
flags);
free_temp(rp, temp);
break;
case OPCODE_LRP:
src[0] = t_src(rp, fpi->SrcReg[0]);
src[1] = t_src(rp, fpi->SrcReg[1]);
src[2] = t_src(rp, fpi->SrcReg[2]);
/* result = tmp0tmp1 + (1 - tmp0)tmp2
* = tmp0tmp1 + tmp2 + (-tmp0)tmp2
* MAD temp, -tmp0, tmp2, tmp2
* MAD result, tmp0, tmp1, temp
*/
temp = get_temp_reg(rp);
emit_arith(rp, PFS_OP_MAD, temp, mask,
negate(keep(src[0])), keep(src[2]), src[2],
0);
emit_arith(rp, PFS_OP_MAD, dest, mask,
src[0], src[1], temp,
flags);
free_temp(rp, temp);
break;
case OPCODE_MAD:
src[0] = t_src(rp, fpi->SrcReg[0]);
src[1] = t_src(rp, fpi->SrcReg[1]);
src[2] = t_src(rp, fpi->SrcReg[2]);
emit_arith(rp, PFS_OP_MAD, dest, mask,
src[0], src[1], src[2],
flags);
break;
case OPCODE_MAX:
src[0] = t_src(rp, fpi->SrcReg[0]);
src[1] = t_src(rp, fpi->SrcReg[1]);
emit_arith(rp, PFS_OP_MAX, dest, mask,
src[0], src[1], undef,
flags);
break;
case OPCODE_MIN:
src[0] = t_src(rp, fpi->SrcReg[0]);
src[1] = t_src(rp, fpi->SrcReg[1]);
emit_arith(rp, PFS_OP_MIN, dest, mask,
src[0], src[1], undef,
flags);
break;
case OPCODE_MOV:
case OPCODE_SWZ:
src[0] = t_src(rp, fpi->SrcReg[0]);
emit_arith(rp, PFS_OP_MAD, dest, mask,
src[0], pfs_one, pfs_zero,
flags);
break;
case OPCODE_MUL:
src[0] = t_src(rp, fpi->SrcReg[0]);
src[1] = t_src(rp, fpi->SrcReg[1]);
emit_arith(rp, PFS_OP_MAD, dest, mask,
src[0], src[1], pfs_zero,
flags);
break;
case OPCODE_POW:
src[0] = t_scalar_src(rp, fpi->SrcReg[0]);
src[1] = t_scalar_src(rp, fpi->SrcReg[1]);
temp = get_temp_reg(rp);
emit_arith(rp, PFS_OP_LG2, temp, WRITEMASK_W,
src[0], undef, undef,
0);
emit_arith(rp, PFS_OP_MAD, temp, WRITEMASK_W,
temp, src[1], pfs_zero,
0);
emit_arith(rp, PFS_OP_EX2, dest, fpi->DstReg.WriteMask,
temp, undef, undef,
0);
free_temp(rp, temp);
break;
case OPCODE_RCP:
src[0] = t_scalar_src(rp, fpi->SrcReg[0]);
emit_arith(rp, PFS_OP_RCP, dest, mask,
src[0], undef, undef,
flags);
break;
case OPCODE_RSQ:
src[0] = t_scalar_src(rp, fpi->SrcReg[0]);
emit_arith(rp, PFS_OP_RSQ, dest, mask,
absolute(src[0]), pfs_zero, pfs_zero,
flags);
break;
case OPCODE_SCS:
ERROR("SCS not implemented\n");
break;
case OPCODE_SGE:
src[0] = t_src(rp, fpi->SrcReg[0]);
src[1] = t_src(rp, fpi->SrcReg[1]);
temp = get_temp_reg(rp);
/* temp = src0 - src1
* dest.c = (temp.c < 0.0) ? 0 : 1
*/
emit_arith(rp, PFS_OP_MAD, temp, mask,
src[0], pfs_one, negate(src[1]),
0);
emit_arith(rp, PFS_OP_CMP, dest, mask,
pfs_one, pfs_zero, temp,
0);
free_temp(rp, temp);
break;
case OPCODE_SIN:
/*
* sin using taylor serie:
* sin(x) = x - x^3/3! + x^5/5! - x^7/7!
*/
temp = get_temp_reg(rp);
cnstv[0] = 0.333333333;
cnstv[1] = 0.008333333;
cnstv[2] = 0.000198413;
cnstv[4] = 0.0;
cnst = emit_const4fv(rp, cnstv);
src[0] = t_scalar_src(rp, fpi->SrcReg[0]);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_XYZ,
src[0],
src[0],
pfs_zero,
flags);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_Y | WRITEMASK_Z,
temp, temp,
pfs_zero,
flags);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_Z,
temp,
swizzle(temp, X, X, X, W),
pfs_zero,
flags);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_XYZ,
src[0],
temp,
pfs_zero,
flags);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_XYZ,
temp, cnst,
pfs_zero,
flags);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_X,
src[0],
pfs_one,
negate(temp),
flags);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_X,
temp,
pfs_one,
swizzle(temp, Y, Y, Y, W),
flags);
emit_arith(rp, PFS_OP_MAD, temp,
WRITEMASK_X,
temp,
pfs_one,
negate(swizzle(temp, Z, Z, Z, W)),
flags);
emit_arith(rp, PFS_OP_MAD, dest, mask,
swizzle(temp, X, X, X, X),
pfs_one,
pfs_zero,
flags);
free_temp(rp, temp);
break;
case OPCODE_SLT:
src[0] = t_src(rp, fpi->SrcReg[0]);
src[1] = t_src(rp, fpi->SrcReg[1]);
temp = get_temp_reg(rp);
/* temp = src0 - src1
* dest.c = (temp.c < 0.0) ? 1 : 0
*/
emit_arith(rp, PFS_OP_MAD, temp, mask,
src[0], pfs_one, negate(src[1]),
0);
emit_arith(rp, PFS_OP_CMP, dest, mask,
pfs_zero, pfs_one, temp,
0);
free_temp(rp, temp);
break;
case OPCODE_SUB:
src[0] = t_src(rp, fpi->SrcReg[0]);
src[1] = t_src(rp, fpi->SrcReg[1]);
emit_arith(rp, PFS_OP_MAD, dest, mask,
src[0], pfs_one, negate(src[1]),
flags);
break;
case OPCODE_TEX:
emit_tex(rp, fpi, R300_FPITX_OP_TEX);
break;
case OPCODE_TXB:
emit_tex(rp, fpi, R300_FPITX_OP_TXB);
break;
case OPCODE_TXP:
emit_tex(rp, fpi, R300_FPITX_OP_TXP);
break;
case OPCODE_XPD: {
src[0] = t_src(rp, fpi->SrcReg[0]);
src[1] = t_src(rp, fpi->SrcReg[1]);
temp = get_temp_reg(rp);
/* temp = src0.zxy * src1.yzx */
emit_arith(rp, PFS_OP_MAD, temp, WRITEMASK_XYZ,
swizzle(keep(src[0]), Z, X, Y, W),
swizzle(keep(src[1]), Y, Z, X, W),
pfs_zero,
0);
/* dest.xyz = src0.yzx * src1.zxy - temp
* dest.w = undefined
* */
emit_arith(rp, PFS_OP_MAD, dest, mask & WRITEMASK_XYZ,
swizzle(src[0], Y, Z, X, W),
swizzle(src[1], Z, X, Y, W),
negate(temp),
flags);
/* cleanup */
free_temp(rp, temp);
break;
}
default:
ERROR("unknown fpi->Opcode %d\n", fpi->Opcode);
break;
}
if (rp->error)
return GL_FALSE;
}
return GL_TRUE;
}
/* - Init structures
* - Determine what hwregs each input corresponds to
*/
static void init_program(struct r300_fragment_program *rp)
{
struct r300_pfs_compile_state *cs = NULL;
struct gl_fragment_program *mp = &rp->mesa_program;
struct prog_instruction *fpi;
GLuint InputsRead = mp->Base.InputsRead;
GLuint temps_used = 0; /* for rp->temps[] */
int i,j;
/* New compile, reset tracking data */
rp->translated = GL_FALSE;
rp->error = GL_FALSE;
rp->cs = cs = &(R300_CONTEXT(rp->ctx)->state.pfs_compile);
rp->tex.length = 0;
rp->cur_node = 0;
rp->first_node_has_tex = 0;
rp->const_nr = 0;
rp->param_nr = 0;
rp->params_uptodate = GL_FALSE;
rp->max_temp_idx = 0;
rp->node[0].alu_end = -1;
rp->node[0].tex_end = -1;
_mesa_memset(cs, 0, sizeof(*rp->cs));
for (i=0;i<PFS_MAX_ALU_INST;i++) {
for (j=0;j<3;j++) {
cs->slot[i].vsrc[j] = SRC_CONST;
cs->slot[i].ssrc[j] = SRC_CONST;
}
}
/* Work out what temps the Mesa inputs correspond to, this must match
* what setup_rs_unit does, which shouldn't be a problem as rs_unit
* configures itself based on the fragprog's InputsRead
*
* NOTE: this depends on get_hw_temp() allocating registers in order,
* starting from register 0.
*/
/* Texcoords come first */
for (i=0;i<rp->ctx->Const.MaxTextureUnits;i++) {
if (InputsRead & (FRAG_BIT_TEX0 << i)) {
cs->inputs[FRAG_ATTRIB_TEX0+i].refcount = 0;
cs->inputs[FRAG_ATTRIB_TEX0+i].reg = get_hw_temp(rp);
}
}
InputsRead &= ~FRAG_BITS_TEX_ANY;
/* fragment position treated as a texcoord */
if (InputsRead & FRAG_BIT_WPOS) {
cs->inputs[FRAG_ATTRIB_WPOS].refcount = 0;
cs->inputs[FRAG_ATTRIB_WPOS].reg = get_hw_temp(rp);
}
InputsRead &= ~FRAG_BIT_WPOS;
/* Then primary colour */
if (InputsRead & FRAG_BIT_COL0) {
cs->inputs[FRAG_ATTRIB_COL0].refcount = 0;
cs->inputs[FRAG_ATTRIB_COL0].reg = get_hw_temp(rp);
}
InputsRead &= ~FRAG_BIT_COL0;
/* Secondary color */
if (InputsRead & FRAG_BIT_COL1) {
cs->inputs[FRAG_ATTRIB_COL1].refcount = 0;
cs->inputs[FRAG_ATTRIB_COL1].reg = get_hw_temp(rp);
}
InputsRead &= ~FRAG_BIT_COL1;
/* Anything else */
if (InputsRead) {
WARN_ONCE("Don't know how to handle inputs 0x%x\n",
InputsRead);
/* force read from hwreg 0 for now */
for (i=0;i<32;i++)
if (InputsRead & (1<<i)) cs->inputs[i].reg = 0;
}
/* Pre-parse the mesa program, grabbing refcounts on input/temp regs.
* That way, we can free up the reg when it's no longer needed
*/
if (!mp->Base.Instructions) {
ERROR("No instructions found in program\n");
return;
}
for (fpi=mp->Base.Instructions;fpi->Opcode != OPCODE_END; fpi++) {
int idx;
for (i=0;i<3;i++) {
idx = fpi->SrcReg[i].Index;
switch (fpi->SrcReg[i].File) {
case PROGRAM_TEMPORARY:
if (!(temps_used & (1<<idx))) {
cs->temps[idx].reg = -1;
cs->temps[idx].refcount = 1;
temps_used |= (1 << idx);
} else
cs->temps[idx].refcount++;
break;
case PROGRAM_INPUT:
cs->inputs[idx].refcount++;
break;
default: break;
}
}
idx = fpi->DstReg.Index;
if (fpi->DstReg.File == PROGRAM_TEMPORARY) {
if (!(temps_used & (1<<idx))) {
cs->temps[idx].reg = -1;
cs->temps[idx].refcount = 1;
temps_used |= (1 << idx);
} else
cs->temps[idx].refcount++;
}
}
cs->temp_in_use = temps_used;
}
static void update_params(struct r300_fragment_program *rp)
{
struct gl_fragment_program *mp = &rp->mesa_program;
int i;
/* Ask Mesa nicely to fill in ParameterValues for us */
if (rp->param_nr)
_mesa_load_state_parameters(rp->ctx, mp->Base.Parameters);
for (i=0;i<rp->param_nr;i++)
COPY_4V(rp->constant[rp->param[i].idx], rp->param[i].values);
rp->params_uptodate = GL_TRUE;
}
void r300_translate_fragment_shader(struct r300_fragment_program *rp)
{
struct r300_pfs_compile_state *cs = NULL;
if (!rp->translated) {
init_program(rp);
cs = rp->cs;
if (parse_program(rp) == GL_FALSE) {
dump_program(rp);
return;
}
/* Finish off */
cs->v_pos = cs->s_pos = MAX2(cs->v_pos, cs->s_pos);
rp->node[rp->cur_node].alu_end =
cs->v_pos - rp->node[rp->cur_node].alu_offset - 1;
if (rp->node[rp->cur_node].tex_end < 0)
rp->node[rp->cur_node].tex_end = 0;
rp->alu_offset = 0;
rp->alu_end = cs->v_pos - 1;
rp->tex_offset = 0;
rp->tex_end = rp->tex.length ? rp->tex.length - 1 : 0;
assert(rp->node[rp->cur_node].alu_end >= 0);
assert(rp->alu_end >= 0);
rp->translated = GL_TRUE;
if (1) dump_program(rp);
}
update_params(rp);
}
/* just some random things... */
static void dump_program(struct r300_fragment_program *rp)
{
int i;
static int pc = 0;
fprintf(stderr, "pc=%d*************************************\n", pc++);
fprintf(stderr, "Mesa program:\n");
fprintf(stderr, "-------------\n");
_mesa_print_program(&rp->mesa_program.Base);
fflush(stdout);
fprintf(stderr, "Hardware program\n");
fprintf(stderr, "----------------\n");
fprintf(stderr, "tex:\n");
for(i=0;i<rp->tex.length;i++) {
fprintf(stderr, "%08x\n", rp->tex.inst[i]);
}
for (i=0;i<(rp->cur_node+1);i++) {
fprintf(stderr, "NODE %d: alu_offset: %d, tex_offset: %d, "\
"alu_end: %d, tex_end: %d\n", i,
rp->node[i].alu_offset,
rp->node[i].tex_offset,
rp->node[i].alu_end,
rp->node[i].tex_end);
}
fprintf(stderr, "%08x\n",
((rp->tex_end << 16) | (R300_PFS_TEXI_0 >> 2)));
for (i=0;i<=rp->tex_end;i++)
fprintf(stderr, "%08x\n", rp->tex.inst[i]);
/* dump program in pretty_print_command_stream.tcl-readable format */
fprintf(stderr, "%08x\n",
((rp->alu_end << 16) | (R300_PFS_INSTR0_0 >> 2)));
for (i=0;i<=rp->alu_end;i++)
fprintf(stderr, "%08x\n", rp->alu.inst[i].inst0);
fprintf(stderr, "%08x\n",
((rp->alu_end << 16) | (R300_PFS_INSTR1_0 >> 2)));
for (i=0;i<=rp->alu_end;i++)
fprintf(stderr, "%08x\n", rp->alu.inst[i].inst1);
fprintf(stderr, "%08x\n",
((rp->alu_end << 16) | (R300_PFS_INSTR2_0 >> 2)));
for (i=0;i<=rp->alu_end;i++)
fprintf(stderr, "%08x\n", rp->alu.inst[i].inst2);
fprintf(stderr, "%08x\n",
((rp->alu_end << 16) | (R300_PFS_INSTR3_0 >> 2)));
for (i=0;i<=rp->alu_end;i++)
fprintf(stderr, "%08x\n", rp->alu.inst[i].inst3);
fprintf(stderr, "00000000\n");
}
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