395 lines
9.7 KiB
ArmAsm
395 lines
9.7 KiB
ArmAsm
; PowerPC optimized drawing methods for Goom
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; © 2003 Guillaume Borios
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; This library is free software; you can redistribute it and/or
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; modify it under the terms of the GNU Library General Public
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; License as published by the Free Software Foundation; either
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; version 2 of the License, or (at your option) any later version.
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;
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; This library is distributed in the hope that it will be useful,
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; but WITHOUT ANY WARRANTY; without even the implied warranty of
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; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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; Library General Public License for more details.
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;
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; You should have received a copy of the GNU Library General Public
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; License along with this library; if not, write to the
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; Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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; Boston, MA 02110-1301, USA.
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; Change log :
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; 30 May 2003 : File creation
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; Section definition : We use a read only code section for the whole file
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.section __TEXT,__text,regular,pure_instructions
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; --------------------------------------------------------------------------------------
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; Single 32b pixel drawing macros
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; Usage :
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; DRAWMETHOD_XXXX_MACRO *pixelIN, *pixelOUT, COLOR, WR1, WR2, WR3, WR4
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; Only the work registers (WR) can be touched by the macros
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;
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; Available methods :
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; DRAWMETHOD_DFLT_MACRO : Default drawing method (Actually OVRW)
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; DRAWMETHOD_PLUS_MACRO : RVB Saturated per channel addition (SLOWEST)
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; DRAWMETHOD_HALF_MACRO : 50% Transparency color drawing
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; DRAWMETHOD_OVRW_MACRO : Direct COLOR drawing (FASTEST)
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; DRAWMETHOD_B_OR_MACRO : Bitwise OR
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; DRAWMETHOD_BAND_MACRO : Bitwise AND
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; DRAWMETHOD_BXOR_MACRO : Bitwise XOR
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; DRAWMETHOD_BNOT_MACRO : Bitwise NOT
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; --------------------------------------------------------------------------------------
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.macro DRAWMETHOD_OVRW_MACRO
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stw $2,0($1) ;; *$1 <- $2
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.endmacro
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.macro DRAWMETHOD_B_OR_MACRO
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lwz $3,0($0) ;; $3 <- *$0
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or $3,$3,$2 ;; $3 <- $3 | $2
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stw $3,0($1) ;; *$1 <- $3
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.endmacro
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.macro DRAWMETHOD_BAND_MACRO
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lwz $3,0($0) ;; $3 <- *$0
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and $3,$3,$2 ;; $3 <- $3 & $2
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stw $3,0($1) ;; *$1 <- $3
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.endmacro
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.macro DRAWMETHOD_BXOR_MACRO
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lwz $3,0($0) ;; $3 <- *$0
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xor $3,$3,$2 ;; $3 <- $3 ^ $2
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stw $3,0($1) ;; *$1 <- $3
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.endmacro
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.macro DRAWMETHOD_BNOT_MACRO
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lwz $3,0($0) ;; $3 <- *$0
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nand $3,$3,$3 ;; $3 <- ~$3
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stw $3,0($1) ;; *$1 <- $3
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.endmacro
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.macro DRAWMETHOD_PLUS_MACRO
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lwz $4,0($0) ;; $4 <- *$0
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andi. $3,$4,0xFF00 ;; $3 <- $4 & 0x0000FF00
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andi. $5,$2,0xFF00 ;; $5 <- $2 & 0x0000FF00
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add $3,$3,$5 ;; $3 <- $3 + $5
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rlwinm $5,$3,15,0,0 ;; $5 <- 0 | ($3[15] << 15)
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srawi $5,$5,23 ;; $5 <- $5 >> 23 (algebraic for sign extension)
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or $3,$3,$5 ;; $3 <- $3 | $5
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lis $5,0xFF ;; $5 <- 0x00FF00FF
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addi $5,$5,0xFF
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and $4,$4,$5 ;; $4 <- $4 & $5
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and $6,$2,$5 ;; $6 <- $2 & $5
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add $4,$4,$6 ;; $4 <- $4 + $6
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rlwinm $6,$4,7,0,0 ;; $6 <- 0 | ($4[7] << 7)
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srawi $6,$6,15 ;; $6 <- $6 >> 15 (algebraic for sign extension)
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rlwinm $5,$4,23,0,0 ;; $5 <- 0 | ($4[23] << 23)
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srawi $5,$5,31 ;; $5 <- $5 >> 31 (algebraic for sign extension)
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rlwimi $6,$5,0,24,31 ;; $6[24..31] <- $5[24..31]
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or $4,$4,$6 ;; $4 <- $4 | $6
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rlwimi $4,$3,0,16,23 ;; $4[16..23] <- $3[16..23]
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stw $4,0($1) ;; *$1 <- $4
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.endmacro
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.macro DRAWMETHOD_HALF_MACRO
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lwz $4,0($0) ;; $4 <- *$0
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andi. $3,$4,0xFF00 ;; $3 <- $4 & 0x0000FF00
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andi. $5,$2,0xFF00 ;; $5 <- $2 & 0x0000FF00
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add $3,$3,$5 ;; $3 <- $3 + $5
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lis $5,0xFF ;; $5 <- 0x00FF00FF
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addi $5,$5,0xFF
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and $4,$4,$5 ;; $4 <- $4 & $5
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and $5,$2,$5 ;; $5 <- $2 & $5
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add $4,$4,$5 ;; $4 <- $4 + $5
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srwi $4,$4,1 ;; $4 <- $4 >> 1
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rlwimi $4,$3,31,16,23 ;; $4[16..23] <- $3[15..22]
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stw $4,0($1) ;; *$1 <- $4
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.endmacro
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.macro DRAWMETHOD_DFLT_MACRO
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DRAWMETHOD_PLUS_MACRO
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.endmacro
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; --------------------------------------------------------------------------------------
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; **************************************************************************************
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; void DRAWMETHOD_PLUS_PPC(unsigned int * buf, unsigned int _col);
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; void DRAWMETHOD_PLUS_2_PPC(unsigned * in, unsigned int * out, unsigned int _col);
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; **************************************************************************************
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.globl _DRAWMETHOD_PLUS_2_PPC
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.align 3
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_DRAWMETHOD_PLUS_2_PPC:
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DRAWMETHOD_PLUS_MACRO r3,r4,r5,r6,r7,r8,r9
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blr ;; return
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.globl _DRAWMETHOD_PLUS_PPC
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.align 3
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_DRAWMETHOD_PLUS_PPC:
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DRAWMETHOD_PLUS_MACRO r3,r3,r4,r5,r6,r7,r9
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blr ;; return
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; **************************************************************************************
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; void DRAWMETHOD_HALF_PPC(unsigned int * buf, unsigned int _col);
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; void DRAWMETHOD_HALF_2_PPC(unsigned * in, unsigned int * out, unsigned int _col);
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; **************************************************************************************
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.globl _DRAWMETHOD_HALF_2_PPC
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.align 3
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_DRAWMETHOD_HALF_2_PPC:
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DRAWMETHOD_HALF_MACRO r3,r4,r5,r6,r7,r8
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blr ;; return
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.globl _DRAWMETHOD_HALF_PPC
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.align 3
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_DRAWMETHOD_HALF_PPC:
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DRAWMETHOD_HALF_MACRO r3,r3,r4,r5,r6,r7
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blr ;; return
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; **************************************************************************************
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; void DRAW_LINE_PPC(unsigned int *data, int x1, int y1, int x2, int y2, unsigned int col,
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; unsigned int screenx, unsigned int screeny)
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; **************************************************************************************
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.globl _DRAW_LINE_PPC
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.align 3
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_DRAW_LINE_PPC:
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;; NOT IMPLEMENTED YET
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blr ;; return
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; **************************************************************************************
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; void _ppc_brightness(Pixel * src, Pixel * dest, unsigned int size, unsigned int coeff)
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; **************************************************************************************
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.const
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.align 4
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vectorZERO:
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.long 0,0,0,0
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.long 0x10101000, 0x10101001, 0x10101002, 0x10101003
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.long 0x10101004, 0x10101005, 0x10101006, 0x10101007
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.long 0x10101008, 0x10101009, 0x1010100A, 0x1010100B
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.long 0x1010100C, 0x1010100D, 0x1010100E, 0x1010100F
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.section __TEXT,__text,regular,pure_instructions
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.globl _ppc_brightness_G4
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.align 3
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_ppc_brightness_G4:
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;; PowerPC Altivec code
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srwi r5,r5,2
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mtctr r5
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;;vrsave
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mfspr r11,256
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lis r12,0xCFFC
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mtspr 256,r12
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mflr r0
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bcl 20,31,"L00000000001$pb"
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"L00000000001$pb":
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mflr r10
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mtlr r0
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addis r9,r10,ha16(vectorZERO-"L00000000001$pb")
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addi r9,r9,lo16(vectorZERO-"L00000000001$pb")
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vxor v0,v0,v0 ;; V0 = NULL vector
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addi r9,r9,16
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lvx v10,0,r9
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addi r9,r9,16
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lvx v11,0,r9
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addi r9,r9,16
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lvx v12,0,r9
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addi r9,r9,16
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lvx v13,0,r9
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addis r9,r10,ha16(vectortmpwork-"L00000000001$pb")
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addi r9,r9,lo16(vectortmpwork-"L00000000001$pb")
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stw r6,0(r9)
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li r6,8
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stw r6,4(r9)
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lvx v9,0,r9
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li r9,128
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vspltw v8,v9,0
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vspltw v9,v9,1
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;; elt counter
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li r9,0
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lis r7,0x0F01
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b L7
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.align 4
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L7:
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lvx v1,r9,r3
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vperm v4,v1,v0,v10
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;*********************
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add r10,r9,r3
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;*********************
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vperm v5,v1,v0,v11
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vperm v6,v1,v0,v12
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vperm v7,v1,v0,v13
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vmulouh v4,v4,v8
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;*********************
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dst r10,r7,3
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;*********************
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vmulouh v5,v5,v8
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vmulouh v6,v6,v8
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vmulouh v7,v7,v8
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vsrw v4,v4,v9
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vsrw v5,v5,v9
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vsrw v6,v6,v9
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vsrw v7,v7,v9
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vpkuwus v4,v4,v5
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vpkuwus v6,v6,v7
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vpkuhus v1,v4,v6
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stvx v1,r9,r4
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addi r9,r9,16
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bdnz L7
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mtspr 256,r11
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blr
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.globl _ppc_brightness_G5
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.align 3
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_ppc_brightness_G5:
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;; PowerPC Altivec G5 code
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srwi r5,r5,2
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mtctr r5
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;;vrsave
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mfspr r11,256
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lis r12,0xCFFC
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mtspr 256,r12
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mflr r0
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bcl 20,31,"L00000000002$pb"
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"L00000000002$pb":
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mflr r10
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mtlr r0
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addis r9,r10,ha16(vectorZERO-"L00000000002$pb")
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addi r9,r9,lo16(vectorZERO-"L00000000002$pb")
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vxor v0,v0,v0 ;; V0 = NULL vector
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addi r9,r9,16
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lvx v10,0,r9
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addi r9,r9,16
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lvx v11,0,r9
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addi r9,r9,16
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lvx v12,0,r9
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addi r9,r9,16
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lvx v13,0,r9
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addis r9,r10,ha16(vectortmpwork-"L00000000002$pb")
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addi r9,r9,lo16(vectortmpwork-"L00000000002$pb")
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stw r6,0(r9)
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li r6,8
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stw r6,4(r9)
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lvx v9,0,r9
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li r9,128
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vspltw v8,v9,0
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vspltw v9,v9,1
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;; elt counter
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li r9,0
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lis r7,0x0F01
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b L6
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.align 4
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L6:
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lvx v1,r9,r3
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vperm v4,v1,v0,v10
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;*********************
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add r10,r9,r3
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;*********************
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vperm v5,v1,v0,v11
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vperm v6,v1,v0,v12
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vperm v7,v1,v0,v13
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vmulouh v4,v4,v8
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vmulouh v5,v5,v8
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vmulouh v6,v6,v8
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vmulouh v7,v7,v8
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vsrw v4,v4,v9
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vsrw v5,v5,v9
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vsrw v6,v6,v9
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vsrw v7,v7,v9
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vpkuwus v4,v4,v5
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vpkuwus v6,v6,v7
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vpkuhus v1,v4,v6
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stvx v1,r9,r4
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addi r9,r9,16
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bdnz L6
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mtspr 256,r11
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blr
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.globl _ppc_brightness_generic
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.align 3
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_ppc_brightness_generic:
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lis r12,0x00FF
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ori r12,r12,0x00FF
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subi r3,r3,4
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subi r4,r4,4
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mtctr r5
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b L1
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.align 4
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L1:
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lwzu r7,4(r3)
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rlwinm r8,r7,16,24,31
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rlwinm r9,r7,24,24,31
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mullw r8,r8,r6
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rlwinm r10,r7,0,24,31
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mullw r9,r9,r6
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srwi r8,r8,8
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mullw r10,r10,r6
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srwi r9,r9,8
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rlwinm. r11,r8,0,0,23
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beq L2
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li r8,0xFF
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L2:
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srwi r10,r10,8
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rlwinm. r11,r9,0,0,23
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beq L3
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li r9,0xFF
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L3:
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rlwinm r7,r8,16,8,15
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rlwinm. r11,r10,0,0,23
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beq L4
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li r10,0xFF
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L4:
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rlwimi r7,r9,8,16,23
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rlwimi r7,r10,0,24,31
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stwu r7,4(r4)
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bdnz L1
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blr
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.static_data
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.align 4
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vectortmpwork:
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.long 0,0,0,0
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