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/****************************************************************************
**
** Copyright (C) 2013 Imagination Technologies Limited, www.imgtec.com
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "../painting/qt_mips_asm_dsp_p.h"
LEAF_MIPS_DSPR2(premultiply_argb_inplace_mips_asm)
SAVE_REGS_ON_STACK 0, s0, s1, s2, s3
3: srl v1, a2, 3 /* t1 = linelen / 8 */
addiu a1, a1, -1 /* numlines-- */
beqz v1, 1f /* if (!(linelen / 8)): tail */
andi v0, a2, 0x7 /* v0 = linelen % 8 */
pref 5, 0 (a0) /* cache-hint: store-streamed */
/* unrolled loop, handles (v1 = len / 8) batches of 8 pixels */
2: addiu v1, v1, -1
pref 5, 0(a0)
pref 5, 32(a0)
lw t0, 0(a0)
lw t1, 4(a0)
lw t2, 8(a0)
lw t3, 12(a0)
srl t4, t0, 24 /* 00|00|00|A1 */
replv.ph t5, t4 /* 00|A1|00|A1 */
srl t6, t1, 24 /* 00|00|00|A2 */
replv.ph t7, t6 /* 00|A2|00|A2 */
muleu_s.ph.qbl t8, t0, t5 /* A1*A1|A1*R1 */
muleu_s.ph.qbr t0, t0, t5 /* A1*G1|A1*B1 */
muleu_s.ph.qbl t9, t1, t7 /* A2*A2|A2*R2 */
muleu_s.ph.qbr t1, t1, t7 /* A2*G2|A2*B2 */
srl t5, t2, 24 /* 00|00|00|A3 */
replv.ph s0, t5 /* 00|A3|00|A3 */
srl t7, t3, 24 /* 00|00|00|A4 */
replv.ph s1, t7 /* 00|A4|00|A4 */
muleu_s.ph.qbl s2, t2, s0 /* A3*A3|A3*R3 */
muleu_s.ph.qbr t2, t2, s0 /* A3*G3|A3*B3 */
muleu_s.ph.qbl s0, t3, s1 /* A4*A4|A4*R4 */
muleu_s.ph.qbr t3, t3, s1 /* A4*G4|A4*B4 */
preceu.ph.qbla s1, t8
preceu.ph.qbla s3, t0
addu.ph t8, t8, s1
addu.ph t0, t0, s3
preceu.ph.qbla s1, t9
preceu.ph.qbla s3, t1
addu.ph t9, t9, s1
addu.ph t1, t1, s3
preceu.ph.qbla s1, s2
preceu.ph.qbla s3, t2
addu.ph s2, s2, s1
addu.ph t2, t2, s3
preceu.ph.qbla s1, s0
preceu.ph.qbla s3, t3
addu.ph s0, s0, s1
addu.ph t3, t3, s3
shra_r.ph t8, t8, 8 /* xxAA1|xxRR1 */
shra_r.ph t0, t0, 8 /* xxBB1|xxGG1 */
shra_r.ph t9, t9, 8
shra_r.ph t1, t1, 8
shra_r.ph s2, s2, 8
shra_r.ph t2, t2, 8
shra_r.ph s0, s0, 8
shra_r.ph t3, t3, 8
precr.qb.ph t0, t8, t0
precr.qb.ph t1, t9, t1
precr.qb.ph t2, s2, t2
precr.qb.ph t3, s0, t3
append t4, t0, 24
append t6, t1, 24
append t5, t2, 24
append t7, t3, 24
sw t4, 0(a0)
sw t6, 4(a0)
sw t5, 8(a0)
sw t7, 12(a0)
lw t0, 16(a0)
lw t1, 20(a0)
lw t2, 24(a0)
lw t3, 28(a0)
srl t4, t0, 24 /* 00|00|00|A1 */
replv.ph t5, t4 /* 00|A1|00|A1 */
srl t6, t1, 24 /* 00|00|00|A2 */
replv.ph t7, t6 /* 00|A2|00|A2 */
muleu_s.ph.qbl t8, t0, t5 /* A1*A1|A1*R1 */
muleu_s.ph.qbr t0, t0, t5 /* A1*G1|A1*B1 */
muleu_s.ph.qbl t9, t1, t7 /* A2*A2|A2*R2 */
muleu_s.ph.qbr t1, t1, t7 /* A2*G2|A2*B2 */
srl t5, t2, 24 /* 00|00|00|A3 */
replv.ph s0, t5 /* 00|A3|00|A3 */
srl t7, t3, 24 /* 00|00|00|A4 */
replv.ph s1, t7 /* 00|A4|00|A4 */
muleu_s.ph.qbl s2, t2, s0 /* A3*A3|A3*R3 */
muleu_s.ph.qbr t2, t2, s0 /* A3*G3|A3*B3 */
muleu_s.ph.qbl s0, t3, s1 /* A4*A4|A4*R4 */
muleu_s.ph.qbr t3, t3, s1 /* A4*G4|A4*B4 */
preceu.ph.qbla s1, t8
preceu.ph.qbla s3, t0
addu.ph t8, t8, s1
addu.ph t0, t0, s3
preceu.ph.qbla s1, t9
preceu.ph.qbla s3, t1
addu.ph t9, t9, s1
addu.ph t1, t1, s3
preceu.ph.qbla s1, s2
preceu.ph.qbla s3, t2
addu.ph s2, s2, s1
addu.ph t2, t2, s3
preceu.ph.qbla s1, s0
preceu.ph.qbla s3, t3
addu.ph s0, s0, s1
addu.ph t3, t3, s3
shra_r.ph t8, t8, 8 /* xxAA1|xxRR1 */
shra_r.ph t0, t0, 8 /* xxBB1|xxGG1 */
shra_r.ph t9, t9, 8
shra_r.ph t1, t1, 8
shra_r.ph s2, s2, 8
shra_r.ph t2, t2, 8
shra_r.ph s0, s0, 8
shra_r.ph t3, t3, 8
precr.qb.ph t0, t8, t0
precr.qb.ph t1, t9, t1
precr.qb.ph t2, s2, t2
precr.qb.ph t3, s0, t3
append t4, t0, 24
append t6, t1, 24
append t5, t2, 24
append t7, t3, 24
sw t4, 16(a0)
sw t6, 20(a0)
sw t5, 24(a0)
sw t7, 28(a0)
bgtz v1, 2b /* if (t1): unrolled loop */
addiu a0, a0, 32 /* data += 8 */
beqz v0, 4f /* if (!v0): skip tail loop */
nop
/* tail loop, handles (len < 8), one pixel at a time */
1: lw t1, 0 (a0)
addiu v0, v0, -1 /* len-- */
srl t2, t1, 24 /* t2 = alpha */
replv.ph t3, t2
muleu_s.ph.qbl t4, t1, t3
muleu_s.ph.qbr t1, t1, t3
preceu.ph.qbla t3, t4
preceu.ph.qbla t5, t1
addu.ph t4, t4, t3
addu.ph t1, t1, t5
shra_r.ph t4, t4, 8
shra_r.ph t1, t1, 8
precr.qb.ph t1, t4, t1
append t2, t1, 24
sw t2, 0(a0)
bgtz v0, 1b
addiu a0, a0, 4 /* src++ */
4: bnez a1, 3b /* if (numlines): loop */
addu a0, a0, a3 /* src += srclineskip */
0: /* return */
RESTORE_REGS_FROM_STACK 0, s0, s1, s2, s3
jr ra
nop
END(premultiply_argb_inplace_mips_asm)
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