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108 lines
2.5 KiB
108 lines
2.5 KiB
/* |
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** Copyright 2015, The Android Open Source Project |
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** |
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** Licensed under the Apache License, Version 2.0 (the "License"); |
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** you may not use this file except in compliance with the License. |
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** You may obtain a copy of the License at |
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** |
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** http://www.apache.org/licenses/LICENSE-2.0 |
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** |
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** Unless required by applicable law or agreed to in writing, software |
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** distributed under the License is distributed on an "AS IS" BASIS, |
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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** See the License for the specific language governing permissions and |
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** limitations under the License. |
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*/ |
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.macro pixel dreg src f sR sG sB shift |
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/* extract red */ |
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.if \shift < 32 |
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dext $t0,\src,\shift+11,5 |
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.else |
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dextu $t0,\src,\shift+11,5 |
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.endif |
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mul $t0,$t0,\f |
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/* extract green */ |
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.if \shift < 32 |
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dext $t1,\src,\shift+5,6 |
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.else |
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dextu $t1,\src,\shift+5,6 |
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.endif |
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mul $t1,$t1,\f |
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/* extract blue */ |
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.if \shift < 32 |
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dext $t2,\src,\shift,5 |
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.else |
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dextu $t2,\src,\shift,5 |
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.endif |
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mul $t2,$t2,\f |
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srl $t0,$t0,8 |
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srl $t1,$t1,8 |
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srl $t2,$t2,8 |
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addu $t0,$t0,\sR |
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addu $t1,$t1,\sG |
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addu \dreg,$t2,\sB |
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sll $t0,$t0,11 |
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sll $t1,$t1,5 |
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or \dreg,\dreg,$t0 |
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or \dreg,\dreg,$t1 |
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.endm |
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.text |
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.balign 4 |
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.global scanline_col32cb16blend_mips64 |
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.ent scanline_col32cb16blend_mips64 |
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scanline_col32cb16blend_mips64: |
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/* check if count is zero */ |
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srl $v0,$a1,24 /* sA */ |
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beqz $a2,done |
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li $t0, 0x100 |
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srl $v1,$v0,7 |
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addu $v0,$v1,$v0 |
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subu $v0,$t0,$v0 /* f */ |
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ext $a3,$a1,3,5 /* sR */ |
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ext $a4,$a1,10,6 /* sG */ |
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ext $a5,$a1,19,5 /* sB */ |
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/* check if cnt is at least 4 */ |
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addiu $a2,$a2,-4 |
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bltz $a2,tail |
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loop_4pixels: |
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ld $t3,0($a0) |
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daddiu $a0,$a0,8 |
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addiu $a2,$a2,-4 |
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pixel $a6 $t3 $v0 $a3 $a4 $a5 0 |
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pixel $a7 $t3 $v0 $a3 $a4 $a5 16 |
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pixel $t8 $t3 $v0 $a3 $a4 $a5 32 |
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pixel $t9 $t3 $v0 $a3 $a4 $a5 48 |
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dins $a6,$a7,16,16 |
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dinsu $a6,$t8,32,16 |
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dinsu $a6,$t9,48,16 |
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sd $a6,-8($a0) |
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bgez $a2, loop_4pixels |
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tail: |
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/* the pixel count underran, restore it now */ |
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addiu $a2,$a2,4 |
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/* handle the last 0..3 pixels */ |
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beqz $a2,done |
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loop_1pixel: |
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lhu $t3,0($a0) |
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daddiu $a0,$a0,2 |
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addiu $a2,$a2,-1 |
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pixel $a6 $t3 $v0 $a3 $a4 $a5 0 |
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sh $a6, -2($a0) |
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bnez $a2,loop_1pixel |
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done: |
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j $ra |
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.end scanline_col32cb16blend_mips64
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