brw_wm_glsl.c

Mesa is an open-source implementation of the OpenGL specification - a system for rendering interacti

	    brw_MUL(p, dst, dst, w);
	}
    }
}

static void emit_xpd(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    int i;
    struct brw_compile *p = &c->func;
    GLuint mask = inst->DstReg.WriteMask;
    for (i = 0; i < 4; i++) {
	GLuint i2 = (i+2)%3;
	GLuint i1 = (i+1)%3;
	if (mask & (1<<i)) {
	    struct brw_reg src0, src1, dst;
	    dst = get_dst_reg(c, inst, i, 1);
	    src0 = negate(get_src_reg(c, &inst->SrcReg[0], i2, 1));
	    src1 = get_src_reg(c, &inst->SrcReg[1], i1, 1);
	    brw_MUL(p, brw_null_reg(), src0, src1);
	    src0 = get_src_reg(c, &inst->SrcReg[0], i1, 1);
	    src1 = get_src_reg(c, &inst->SrcReg[1], i2, 1);
	    brw_set_saturate(p, inst->SaturateMode != SATURATE_OFF);
	    brw_MAC(p, dst, src0, src1);
	    brw_set_saturate(p, 0);
	}
    }
    brw_set_saturate(p, 0);
}

static void emit_dp3(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    struct brw_reg src0[3], src1[3], dst;
    int i;
    struct brw_compile *p = &c->func;
    for (i = 0; i < 3; i++) {
	src0[i] = get_src_reg(c, &inst->SrcReg[0], i, 1);
	src1[i] = get_src_reg(c, &inst->SrcReg[1], i, 1);
    }

    dst = get_dst_reg(c, inst, get_scalar_dst_index(inst), 1);
    brw_MUL(p, brw_null_reg(), src0[0], src1[0]);
    brw_MAC(p, brw_null_reg(), src0[1], src1[1]);
    brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
    brw_MAC(p, dst, src0[2], src1[2]);
    brw_set_saturate(p, 0);
}

static void emit_dp4(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    struct brw_reg src0[4], src1[4], dst;
    int i;
    struct brw_compile *p = &c->func;
    for (i = 0; i < 4; i++) {
	src0[i] = get_src_reg(c, &inst->SrcReg[0], i, 1);
	src1[i] = get_src_reg(c, &inst->SrcReg[1], i, 1);
    }
    dst = get_dst_reg(c, inst, get_scalar_dst_index(inst), 1);
    brw_MUL(p, brw_null_reg(), src0[0], src1[0]);
    brw_MAC(p, brw_null_reg(), src0[1], src1[1]);
    brw_MAC(p, brw_null_reg(), src0[2], src1[2]);
    brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
    brw_MAC(p, dst, src0[3], src1[3]);
    brw_set_saturate(p, 0);
}

static void emit_dph(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    struct brw_reg src0[4], src1[4], dst;
    int i;
    struct brw_compile *p = &c->func;
    for (i = 0; i < 4; i++) {
	src0[i] = get_src_reg(c, &inst->SrcReg[0], i, 1);
	src1[i] = get_src_reg(c, &inst->SrcReg[1], i, 1);
    }
    dst = get_dst_reg(c, inst, get_scalar_dst_index(inst), 1);
    brw_MUL(p, brw_null_reg(), src0[0], src1[0]);
    brw_MAC(p, brw_null_reg(), src0[1], src1[1]);
    brw_MAC(p, dst, src0[2], src1[2]);
    brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
    brw_ADD(p, dst, src0[3], src1[3]);
    brw_set_saturate(p, 0);
}

static void emit_math1(struct brw_wm_compile *c,
		struct prog_instruction *inst, GLuint func)
{
    struct brw_compile *p = &c->func;
    struct brw_reg src0, dst;

    src0 = get_src_reg(c, &inst->SrcReg[0], 0, 1);
    dst = get_dst_reg(c, inst, get_scalar_dst_index(inst), 1);
    brw_MOV(p, brw_message_reg(2), src0);
    brw_math(p,
	    dst,
	    func,
	    (inst->SaturateMode != SATURATE_OFF) ? BRW_MATH_SATURATE_SATURATE : BRW_MATH_SATURATE_NONE,
	    2,
	    brw_null_reg(),
	    BRW_MATH_DATA_VECTOR,
	    BRW_MATH_PRECISION_FULL);
}

static void emit_rcp(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    emit_math1(c, inst, BRW_MATH_FUNCTION_INV);
}

static void emit_rsq(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    emit_math1(c, inst, BRW_MATH_FUNCTION_RSQ);
}

static void emit_sin(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    emit_math1(c, inst, BRW_MATH_FUNCTION_SIN);
}

static void emit_cos(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    emit_math1(c, inst, BRW_MATH_FUNCTION_COS);
}

static void emit_ex2(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    emit_math1(c, inst, BRW_MATH_FUNCTION_EXP);
}

static void emit_lg2(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    emit_math1(c, inst, BRW_MATH_FUNCTION_LOG);
}

static void emit_add(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    struct brw_compile *p = &c->func;
    struct brw_reg src0, src1, dst;
    GLuint mask = inst->DstReg.WriteMask;
    int i;
    brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
    for (i = 0 ; i < 4; i++) {
	if (mask & (1<<i)) {
	    dst = get_dst_reg(c, inst, i, 1);
	    src0 = get_src_reg(c, &inst->SrcReg[0], i, 1);
	    src1 = get_src_reg(c, &inst->SrcReg[1], i, 1);
	    brw_ADD(p, dst, src0, src1);
	}
    }
    brw_set_saturate(p, 0);
}

static void emit_sub(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    struct brw_compile *p = &c->func;
    struct brw_reg src0, src1, dst;
    GLuint mask = inst->DstReg.WriteMask;
    int i;
    brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
    for (i = 0 ; i < 4; i++) {
	if (mask & (1<<i)) {
	    dst = get_dst_reg(c, inst, i, 1);
	    src0 = get_src_reg(c, &inst->SrcReg[0], i, 1);
	    src1 = get_src_reg(c, &inst->SrcReg[1], i, 1);
	    brw_ADD(p, dst, src0, negate(src1));
	}
    }
    brw_set_saturate(p, 0);
}

static void emit_mul(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    struct brw_compile *p = &c->func;
    struct brw_reg src0, src1, dst;
    GLuint mask = inst->DstReg.WriteMask;
    int i;
    brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
    for (i = 0 ; i < 4; i++) {
	if (mask & (1<<i)) {
	    dst = get_dst_reg(c, inst, i, 1);
	    src0 = get_src_reg(c, &inst->SrcReg[0], i, 1);
	    src1 = get_src_reg(c, &inst->SrcReg[1], i, 1);
	    brw_MUL(p, dst, src0, src1);
	}
    }
    brw_set_saturate(p, 0);
}

static void emit_frc(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    struct brw_compile *p = &c->func;
    struct brw_reg src0, dst;
    GLuint mask = inst->DstReg.WriteMask;
    int i;
    brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
    for (i = 0 ; i < 4; i++) {
	if (mask & (1<<i)) {
	    dst = get_dst_reg(c, inst, i, 1);
	    src0 = get_src_reg(c, &inst->SrcReg[0], i, 1);
	    brw_FRC(p, dst, src0);
	}
    }
    if (inst->SaturateMode != SATURATE_OFF)
	brw_set_saturate(p, 0);
}

static void emit_flr(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    struct brw_compile *p = &c->func;
    struct brw_reg src0, dst;
    GLuint mask = inst->DstReg.WriteMask;
    int i;
    brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
    for (i = 0 ; i < 4; i++) {
	if (mask & (1<<i)) {
	    dst = get_dst_reg(c, inst, i, 1);
	    src0 = get_src_reg(c, &inst->SrcReg[0], i, 1);
	    brw_RNDD(p, dst, src0);
	}
    }
    brw_set_saturate(p, 0);
}

static void emit_max(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    struct brw_compile *p = &c->func;
    GLuint mask = inst->DstReg.WriteMask;
    struct brw_reg src0, src1, dst;
    int i;
    brw_push_insn_state(p);
    for (i = 0; i < 4; i++) {
	if (mask & (1<<i)) {
	    dst = get_dst_reg(c, inst, i, 1);
	    src0 = get_src_reg(c, &inst->SrcReg[0], i, 1);
	    src1 = get_src_reg(c, &inst->SrcReg[1], i, 1);
	    brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
	    brw_MOV(p, dst, src0);
	    brw_set_saturate(p, 0);

	    brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_L, src0, src1);
	    brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
	    brw_set_predicate_control(p, BRW_PREDICATE_NORMAL);
	    brw_MOV(p, dst, src1);
	    brw_set_saturate(p, 0);
	    brw_set_predicate_control_flag_value(p, 0xff);
	}
    }
    brw_pop_insn_state(p);
}

static void emit_min(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    struct brw_compile *p = &c->func;
    GLuint mask = inst->DstReg.WriteMask;
    struct brw_reg src0, src1, dst;
    int i;
    brw_push_insn_state(p);
    for (i = 0; i < 4; i++) {
	if (mask & (1<<i)) {
	    dst = get_dst_reg(c, inst, i, 1);
	    src0 = get_src_reg(c, &inst->SrcReg[0], i, 1);
	    src1 = get_src_reg(c, &inst->SrcReg[1], i, 1);
	    brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
	    brw_MOV(p, dst, src0);
	    brw_set_saturate(p, 0);

	    brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_L, src1, src0);
	    brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
	    brw_set_predicate_control(p, BRW_PREDICATE_NORMAL);
	    brw_MOV(p, dst, src1);
	    brw_set_saturate(p, 0);
	    brw_set_predicate_control_flag_value(p, 0xff);
	}
    }
    brw_pop_insn_state(p);
}

static void emit_pow(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    struct brw_compile *p = &c->func;
    struct brw_reg dst, src0, src1;
    dst = get_dst_reg(c, inst, get_scalar_dst_index(inst), 1);
    src0 = get_src_reg(c, &inst->SrcReg[0], 0, 1);
    src1 = get_src_reg(c, &inst->SrcReg[1], 0, 1);

    brw_MOV(p, brw_message_reg(2), src0);
    brw_MOV(p, brw_message_reg(3), src1);

    brw_math(p,
	    dst,
	    BRW_MATH_FUNCTION_POW,
	    (inst->SaturateMode != SATURATE_OFF) ? BRW_MATH_SATURATE_SATURATE : BRW_MATH_SATURATE_NONE,
	    2,
	    brw_null_reg(),
	    BRW_MATH_DATA_VECTOR,
	    BRW_MATH_PRECISION_FULL);
}

static void emit_lrp(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    struct brw_compile *p = &c->func;
    GLuint mask = inst->DstReg.WriteMask;
    struct brw_reg dst, tmp1, tmp2, src0, src1, src2;
    int i;
    for (i = 0; i < 4; i++) {
	if (mask & (1<<i)) {
	    dst = get_dst_reg(c, inst, i, 1);
	    src0 = get_src_reg(c, &inst->SrcReg[0], i, 1);

	    src1 = get_src_reg(c, &inst->SrcReg[1], i, 1);

	    if (src1.nr == dst.nr) {
		tmp1 = alloc_tmp(c);
		brw_MOV(p, tmp1, src1);
	    } else
		tmp1 = src1;

	    src2 = get_src_reg(c, &inst->SrcReg[2], i, 1);
	    if (src2.nr == dst.nr) {
		tmp2 = alloc_tmp(c);
		brw_MOV(p, tmp2, src2);
	    } else
		tmp2 = src2;

	    brw_ADD(p, dst, negate(src0), brw_imm_f(1.0));
	    brw_MUL(p, brw_null_reg(), dst, tmp2);
	    brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
	    brw_MAC(p, dst, src0, tmp1);
	    brw_set_saturate(p, 0);
	}
	release_tmps(c);
    }
}

static void emit_kil(struct brw_wm_compile *c)
{
	struct brw_compile *p = &c->func;
	struct brw_reg depth = retype(brw_vec1_grf(0, 0), BRW_REGISTER_TYPE_UW);
	brw_push_insn_state(p);
	brw_set_mask_control(p, BRW_MASK_DISABLE);
	brw_NOT(p, c->emit_mask_reg, brw_mask_reg(1)); //IMASK
	brw_AND(p, depth, c->emit_mask_reg, depth);
	brw_pop_insn_state(p);
}

static void emit_mad(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    struct brw_compile *p = &c->func;
    GLuint mask = inst->DstReg.WriteMask;
    struct brw_reg dst, src0, src1, src2;
    int i;

    for (i = 0; i < 4; i++) {
	if (mask & (1<<i)) {
	    dst = get_dst_reg(c, inst, i, 1);
	    src0 = get_src_reg(c, &inst->SrcReg[0], i, 1);
	    src1 = get_src_reg(c, &inst->SrcReg[1], i, 1);
	    src2 = get_src_reg(c, &inst->SrcReg[2], i, 1);
	    brw_MUL(p, dst, src0, src1);

	    brw_set_saturate(p, (inst->SaturateMode != SATURATE_OFF) ? 1 : 0);
	    brw_ADD(p, dst, dst, src2);
	    brw_set_saturate(p, 0);
	}
    }
}

static void emit_sop(struct brw_wm_compile *c,
		struct prog_instruction *inst, GLuint cond)
{
    struct brw_compile *p = &c->func;
    GLuint mask = inst->DstReg.WriteMask;
    struct brw_reg dst, src0, src1;
    int i;

    for (i = 0; i < 4; i++) {
	if (mask & (1<<i)) {
	    dst = get_dst_reg(c, inst, i, 1);
	    src0 = get_src_reg(c, &inst->SrcReg[0], i, 1);
	    src1 = get_src_reg(c, &inst->SrcReg[1], i, 1);
	    brw_push_insn_state(p);
	    brw_CMP(p, brw_null_reg(), cond, src0, src1);
	    brw_set_predicate_control(p, BRW_PREDICATE_NONE);
	    brw_MOV(p, dst, brw_imm_f(0.0));
	    brw_set_predicate_control(p, BRW_PREDICATE_NORMAL);
	    brw_MOV(p, dst, brw_imm_f(1.0));
	    brw_pop_insn_state(p);
	}
    }
}

static void emit_slt(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    emit_sop(c, inst, BRW_CONDITIONAL_L);
}

static void emit_sle(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    emit_sop(c, inst, BRW_CONDITIONAL_LE);
}

static void emit_sgt(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    emit_sop(c, inst, BRW_CONDITIONAL_G);
}

static void emit_sge(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    emit_sop(c, inst, BRW_CONDITIONAL_GE);
}

static void emit_seq(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    emit_sop(c, inst, BRW_CONDITIONAL_EQ);
}

static void emit_sne(struct brw_wm_compile *c,
		struct prog_instruction *inst)
{
    emit_sop(c, inst, BRW_CONDITIONAL_NEQ);
}

static void emit_ddx(struct brw_wm_compile *c,
                struct prog_instruction *inst)
{
    struct brw_compile *p = &c->func;
    GLuint mask = inst->DstReg.WriteMask;
    struct brw_reg interp[4];
    struct brw_reg dst;
    struct brw_reg src0, w;
    GLuint nr, i;
    src0 = get_src_reg(c, &inst->SrcReg[0], 0, 1);
    w = get_src_reg(c, &inst->SrcReg[1], 3, 1);
    nr = src0.nr;
    interp[0] = brw_vec1_grf(nr, 0);
    interp[1] = brw_vec1_grf(nr, 4);