From 154cd7a72363513f2d3d8d83fe19d69518df7d2e Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Tue, 24 Mar 2009 17:29:40 -0600 Subject: i965: add support for float literal instruction operands Call the get_src_reg_imm() function when it's permissible to generate a literal value src register. --- src/mesa/drivers/dri/i965/brw_wm_glsl.c | 63 ++++++++++++++++++++++----------- 1 file changed, 43 insertions(+), 20 deletions(-) (limited to 'src/mesa/drivers/dri/i965') diff --git a/src/mesa/drivers/dri/i965/brw_wm_glsl.c b/src/mesa/drivers/dri/i965/brw_wm_glsl.c index ffde59e143..00f2d3af85 100644 --- a/src/mesa/drivers/dri/i965/brw_wm_glsl.c +++ b/src/mesa/drivers/dri/i965/brw_wm_glsl.c @@ -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<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<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<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<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<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<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<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<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<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<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); -- cgit v1.2.3