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i965: add support for float literal instruction operands

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Call the get_src_reg_imm() function when it's permissible to generate a
literal value src register.
This commit is contained in:
Brian Paul 2009-03-24 17:29:40 -06:00
parent 966cd4f1af
commit 154cd7a723
1 changed files with 43 additions and 20 deletions
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63
src/mesa/drivers/dri/i965/brw_wm_glsl.c
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@ -258,9 +258,32 @@ static struct brw_reg get_src_reg(struct brw_wm_compile *c,
const int nr = 1;
int component = GET_SWZ(src->Swizzle, index);
return get_reg(c, src->File, src->Index, component, nr,
src->NegateBase, src->Abs);
src->NegateBase, src->Abs);
}
/**
* Same as \sa get_src_reg() but if the register is a literal, emit
* a brw_reg encoding the literal.
* Note that a brw instruction only allows one src operand to be a literal.
* For instructions with more than one operand, only the second can be a literal.
*/
static struct brw_reg get_src_reg_imm(struct brw_wm_compile *c,
struct prog_src_register *src, int index)
{
if (src->File == PROGRAM_CONSTANT) {
/* a literal */
const int component = GET_SWZ(src->Swizzle, index);
const GLfloat *param =
c->fp->program.Base.Parameters->ParameterValues[src->Index];
return brw_imm_f(param[component]);
}
else {
return get_src_reg(c, src, index);
}
}
/**
* Subroutines are minimal support for resusable instruction sequences.
* They are implemented as simply as possible to minimise overhead: there
@ -371,7 +394,7 @@ static void emit_mov( struct brw_wm_compile *c,
if (mask & (1<<i)) {
struct brw_reg src, dst;
dst = get_dst_reg(c, inst, i);
src = get_src_reg(c, &inst->SrcReg[0], i);
src = get_src_reg_imm(c, &inst->SrcReg[0], i);
brw_MOV(p, dst, src);
}
}
@ -698,10 +721,10 @@ static void emit_xpd(struct brw_wm_compile *c,
struct brw_reg src0, src1, dst;
dst = get_dst_reg(c, inst, i);
src0 = negate(get_src_reg(c, &inst->SrcReg[0], i2));
src1 = get_src_reg(c, &inst->SrcReg[1], i1);
src1 = get_src_reg_imm(c, &inst->SrcReg[1], i1);
brw_MUL(p, brw_null_reg(), src0, src1);
src0 = get_src_reg(c, &inst->SrcReg[0], i1);
src1 = get_src_reg(c, &inst->SrcReg[1], i2);
src1 = get_src_reg_imm(c, &inst->SrcReg[1], i2);
brw_set_saturate(p, inst->SaturateMode != SATURATE_OFF);
brw_MAC(p, dst, src0, src1);
brw_set_saturate(p, 0);
@ -718,7 +741,7 @@ static void emit_dp3(struct brw_wm_compile *c,
struct brw_compile *p = &c->func;
for (i = 0; i < 3; i++) {
src0[i] = get_src_reg(c, &inst->SrcReg[0], i);
src1[i] = get_src_reg(c, &inst->SrcReg[1], i);
src1[i] = get_src_reg_imm(c, &inst->SrcReg[1], i);
}
dst = get_dst_reg(c, inst, get_scalar_dst_index(inst));
@ -737,7 +760,7 @@ static void emit_dp4(struct brw_wm_compile *c,
struct brw_compile *p = &c->func;
for (i = 0; i < 4; i++) {
src0[i] = get_src_reg(c, &inst->SrcReg[0], i);
src1[i] = get_src_reg(c, &inst->SrcReg[1], i);
src1[i] = get_src_reg_imm(c, &inst->SrcReg[1], i);
}
dst = get_dst_reg(c, inst, get_scalar_dst_index(inst));
brw_MUL(p, brw_null_reg(), src0[0], src1[0]);
@ -756,7 +779,7 @@ static void emit_dph(struct brw_wm_compile *c,
struct brw_compile *p = &c->func;
for (i = 0; i < 4; i++) {
src0[i] = get_src_reg(c, &inst->SrcReg[0], i);
src1[i] = get_src_reg(c, &inst->SrcReg[1], i);
src1[i] = get_src_reg_imm(c, &inst->SrcReg[1], i);
}
dst = get_dst_reg(c, inst, get_scalar_dst_index(inst));
brw_MUL(p, brw_null_reg(), src0[0], src1[0]);
@ -857,7 +880,7 @@ static void emit_add(struct brw_wm_compile *c,
if (mask & (1<<i)) {
dst = get_dst_reg(c, inst, i);
src0 = get_src_reg(c, &inst->SrcReg[0], i);
src1 = get_src_reg(c, &inst->SrcReg[1], i);
src1 = get_src_reg_imm(c, &inst->SrcReg[1], i);
brw_ADD(p, dst, src0, src1);
}
}
@ -876,7 +899,7 @@ static void emit_sub(struct brw_wm_compile *c,
if (mask & (1<<i)) {
dst = get_dst_reg(c, inst, i);
src0 = get_src_reg(c, &inst->SrcReg[0], i);
src1 = get_src_reg(c, &inst->SrcReg[1], i);
src1 = get_src_reg_imm(c, &inst->SrcReg[1], i);
brw_ADD(p, dst, src0, negate(src1));
}
}
@ -895,7 +918,7 @@ static void emit_mul(struct brw_wm_compile *c,
if (mask & (1<<i)) {
dst = get_dst_reg(c, inst, i);
src0 = get_src_reg(c, &inst->SrcReg[0], i);
src1 = get_src_reg(c, &inst->SrcReg[1], i);
src1 = get_src_reg_imm(c, &inst->SrcReg[1], i);
brw_MUL(p, dst, src0, src1);
}
}
@ -913,7 +936,7 @@ static void emit_frc(struct brw_wm_compile *c,
for (i = 0 ; i < 4; i++) {
if (mask & (1<<i)) {
dst = get_dst_reg(c, inst, i);
src0 = get_src_reg(c, &inst->SrcReg[0], i);
src0 = get_src_reg_imm(c, &inst->SrcReg[0], i);
brw_FRC(p, dst, src0);
}
}
@ -932,7 +955,7 @@ static void emit_flr(struct brw_wm_compile *c,
for (i = 0 ; i < 4; i++) {
if (mask & (1<<i)) {
dst = get_dst_reg(c, inst, i);
src0 = get_src_reg(c, &inst->SrcReg[0], i);
src0 = get_src_reg_imm(c, &inst->SrcReg[0], i);
brw_RNDD(p, dst, src0);
}
}
@ -951,7 +974,7 @@ static void emit_max(struct brw_wm_compile *c,
if (mask & (1<<i)) {
dst = get_dst_reg(c, inst, i);
src0 = get_src_reg(c, &inst->SrcReg[0], i);
src1 = get_src_reg(c, &inst->SrcReg[1], i);
src1 = get_src_reg_imm(c, &inst->SrcReg[1], i);
brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
brw_MOV(p, dst, src0);
brw_set_saturate(p, 0);
@ -978,7 +1001,7 @@ static void emit_min(struct brw_wm_compile *c,
for (i = 0; i < 4; i++) {
if (mask & (1<<i)) {
dst = get_dst_reg(c, inst, i);
src0 = get_src_reg(c, &inst->SrcReg[0], i);
src0 = get_src_reg_imm(c, &inst->SrcReg[0], i);
src1 = get_src_reg(c, &inst->SrcReg[1], i);
brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
brw_MOV(p, dst, src0);
@ -1001,8 +1024,8 @@ static void emit_pow(struct brw_wm_compile *c,
struct brw_compile *p = &c->func;
struct brw_reg dst, src0, src1;
dst = get_dst_reg(c, inst, get_scalar_dst_index(inst));
src0 = get_src_reg(c, &inst->SrcReg[0], 0);
src1 = get_src_reg(c, &inst->SrcReg[1], 0);
src0 = get_src_reg_imm(c, &inst->SrcReg[0], 0);
src1 = get_src_reg_imm(c, &inst->SrcReg[1], 0);
brw_MOV(p, brw_message_reg(2), src0);
brw_MOV(p, brw_message_reg(3), src1);
@ -1030,7 +1053,7 @@ static void emit_lrp(struct brw_wm_compile *c,
dst = get_dst_reg(c, inst, i);
src0 = get_src_reg(c, &inst->SrcReg[0], i);
src1 = get_src_reg(c, &inst->SrcReg[1], i);
src1 = get_src_reg_imm(c, &inst->SrcReg[1], i);
if (src1.nr == dst.nr) {
tmp1 = alloc_tmp(c);
@ -1082,8 +1105,8 @@ static void emit_mad(struct brw_wm_compile *c,
if (mask & (1<<i)) {
dst = get_dst_reg(c, inst, i);
src0 = get_src_reg(c, &inst->SrcReg[0], i);
src1 = get_src_reg(c, &inst->SrcReg[1], i);
src2 = get_src_reg(c, &inst->SrcReg[2], i);
src1 = get_src_reg_imm(c, &inst->SrcReg[1], i);
src2 = get_src_reg_imm(c, &inst->SrcReg[2], i);
brw_MUL(p, dst, src0, src1);
brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
@ -1105,7 +1128,7 @@ static void emit_sop(struct brw_wm_compile *c,
if (mask & (1<<i)) {
dst = get_dst_reg(c, inst, i);
src0 = get_src_reg(c, &inst->SrcReg[0], i);
src1 = get_src_reg(c, &inst->SrcReg[1], i);
src1 = get_src_reg_imm(c, &inst->SrcReg[1], i);
brw_push_insn_state(p);
brw_CMP(p, brw_null_reg(), cond, src0, src1);
brw_set_predicate_control(p, BRW_PREDICATE_NONE);