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dsp_matrix.jerry.s
596 lines (466 loc) · 13.3 KB
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dsp_matrix.jerry.s
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;; jump condition codes
;; %00000: T always
;; %00100: CC carry clear (less than)
;; %01000: CS carry set (greater or equal)
;; %00010: EQ zero set (equal)
;; %00001: NE zero clear (not equal)
;; %11000: MI negative set
;; %10100: PL negative clear
;; %00101: HI greater than
.include "jaguar.inc"
.globl _jag_vidmem
.globl _scanline_offset_table
* .globl _FIXED_SINE_TABLE
* .globl _FIXED_COSINE_TABLE
.include "regmacros.inc"
SIZE_UINT32 .equ 4 ;bytes
;;; Global registers for these functions
PTR_INDEX .equr r14 ;index into whatever register we're accessing
PTR_MATRIX_1 .equr r20 ;pointer to Matrix 1
PTR_MATRIX_2 .equr r21 ;pointer to Matrix 2
PTR_MATRIX_R .equr r22 ;pointer to result matrix
;;; Global register defines
PTR_MATRIX .equr r29
FIXED_ONE .equr r30
FIXED_ZERO .equr r31
;;; ;;;;;;;;;;;;;;;;
;;; DSP matrix functions
.globl _dsp_matrix_ptr_m1
.globl _dsp_matrix_ptr_m2
_dsp_matrix_functions::
.phrase
_dsp_matrix_identity_set::
.dsp
.org D_RAM
movei #_dsp_matrix_result,TEMP1
move TEMP1,PTR_MATRIX_1
moveq #0,TEMP1
movei #$00010000,TEMP2 ;fixed-point: 1.0
;; Row 0
movei #SIZE_UINT32*0,PTR_INDEX
store TEMP2,(PTR_INDEX+PTR_MATRIX_1)
movei #SIZE_UINT32*1,PTR_INDEX
store TEMP1,(PTR_INDEX+PTR_MATRIX_1)
movei #SIZE_UINT32*2,PTR_INDEX
store TEMP1,(PTR_INDEX+PTR_MATRIX_1)
movei #SIZE_UINT32*3,PTR_INDEX
store TEMP1,(PTR_INDEX+PTR_MATRIX_1)
;; Row 1
movei #SIZE_UINT32*4,PTR_INDEX
store TEMP1,(PTR_INDEX+PTR_MATRIX_1)
movei #SIZE_UINT32*5,PTR_INDEX
store TEMP2,(PTR_INDEX+PTR_MATRIX_1)
movei #SIZE_UINT32*6,PTR_INDEX
store TEMP1,(PTR_INDEX+PTR_MATRIX_1)
movei #SIZE_UINT32*7,PTR_INDEX
store TEMP1,(PTR_INDEX+PTR_MATRIX_1)
;; Row 2
movei #SIZE_UINT32*8,PTR_INDEX
store TEMP1,(PTR_INDEX+PTR_MATRIX_1)
movei #SIZE_UINT32*9,PTR_INDEX
store TEMP1,(PTR_INDEX+PTR_MATRIX_1)
movei #SIZE_UINT32*10,PTR_INDEX
store TEMP2,(PTR_INDEX+PTR_MATRIX_1)
movei #SIZE_UINT32*11,PTR_INDEX
store TEMP1,(PTR_INDEX+PTR_MATRIX_1)
;; Row 3
movei #SIZE_UINT32*12,PTR_INDEX
store TEMP1,(PTR_INDEX+PTR_MATRIX_1)
movei #SIZE_UINT32*13,PTR_INDEX
store TEMP1,(PTR_INDEX+PTR_MATRIX_1)
movei #SIZE_UINT32*14,PTR_INDEX
store TEMP1,(PTR_INDEX+PTR_MATRIX_1)
movei #SIZE_UINT32*15,PTR_INDEX
store TEMP2,(PTR_INDEX+PTR_MATRIX_1)
StopDSP
nop
.68000
_dsp_matrix_identity_set_end::
;;; Zero out the matrix at dsp_matrix_ptr_m1
.phrase
_dsp_matrix_zero::
LoadValue _dsp_matrix_ptr_m1,PTR_MATRIX_1
movei #0,TEMP1
movei #0,LOOPCOUNTER
movei #16,LOOPEND
movei #.zero_loop,JUMPADDR
movei #SIZE_UINT32*0,PTR_INDEX
.zero_loop:
store TEMP1,(PTR_INDEX+PTR_MATRIX_1)
addq #SIZE_UINT32,PTR_INDEX
cmpq #15,LOOPCOUNTER
jr ne,.zero_loop ;if LOOPCOUNTER < 15, loop.
addq #1,LOOPCOUNTER
StopDSP
nop
.68000
_dsp_matrix_zero_end::
;;; Add the matrices in operand_1 and operand_2, store the result
.phrase
_dsp_matrix_add::
movei #0,LOOPCOUNTER
movei #16,LOOPEND
movei #.addition_loop,JUMPADDR
movei #_dsp_matrix_operand_1,PTR_MATRIX_1
movei #_dsp_matrix_operand_2,PTR_MATRIX_2
movei #_dsp_matrix_result,PTR_MATRIX_R
movei #SIZE_UINT32*0,PTR_INDEX
.addition_loop:
load (PTR_INDEX+PTR_MATRIX_1),TEMP1
load (PTR_INDEX+PTR_MATRIX_2),TEMP2
add TEMP1,TEMP2
store TEMP2,(PTR_INDEX+PTR_MATRIX_R)
addq #SIZE_UINT32,PTR_INDEX
cmpq #15,LOOPCOUNTER
jr ne,.addition_loop ;if LOOPCOUNTER < 15, loop.
addq #1,LOOPCOUNTER
StopDSP
nop
.68000
_dsp_matrix_add_end::
.phrase
_dsp_matrix_sub::
movei #0,LOOPCOUNTER
movei #16,LOOPEND
movei #.subtraction_loop,JUMPADDR
movei #_dsp_matrix_operand_1,PTR_MATRIX_1
movei #_dsp_matrix_operand_2,PTR_MATRIX_2
movei #_dsp_matrix_result,PTR_MATRIX_R
movei #SIZE_UINT32*0,PTR_INDEX
.subtraction_loop:
load (PTR_INDEX+PTR_MATRIX_1),TEMP1
load (PTR_INDEX+PTR_MATRIX_2),TEMP2
sub TEMP2,TEMP1
store TEMP1,(PTR_INDEX+PTR_MATRIX_R)
addq #SIZE_UINT32,PTR_INDEX
cmpq #15,LOOPCOUNTER
jr ne,.subtraction_loop ;if LOOPCOUNTER < 15, loop.
addq #1,LOOPCOUNTER
StopDSP
nop
.68000
_dsp_matrix_sub_end::
;;; 4x4 matrix multiplication:
;;; Multiply the matrix in dsp_matrix_operand_1 by dsp_matrix_operand_2.
;;; Store the result in dsp_matrix_result.
.phrase
_dsp_matrix_multiply::
;; Zero out the result matrix.
movei #_dsp_matrix_operand_1,PTR_MATRIX_1
movei #_dsp_matrix_operand_2,PTR_MATRIX_2
movei #_dsp_matrix_result,PTR_MATRIX_R
.zero:
movei #0,TEMP1
movei #0,LOOPCOUNTER
movei #16,LOOPEND
movei #.zero_loop,JUMPADDR
movei #SIZE_UINT32*0,PTR_INDEX
.zero_loop:
store TEMP1,(PTR_INDEX+PTR_MATRIX_R)
addq #SIZE_UINT32,PTR_INDEX
cmpq #15,LOOPCOUNTER
jr ne,.zero_loop ;if LOOPCOUNTER < 15, loop.
addq #1,LOOPCOUNTER
;;; Now we can do the multiplication.
.do_multiply:
rightRow .equr r10
row .equr r11
col .equr r12
LIMIT .equr r13
LEFT_INDEX .equr r21
RIGHT_INDEX .equr r22
PRODUCT_INDEX .equr r23
LEFT .equr r16
RIGHT .equr r17
PRODUCT .equr r18
FOUR .equr r24
SIXTEEN .equr r25
movei #4,LIMIT
movei #0,rightRow
movei #0,row
movei #0,col
movei #0,PTR_INDEX
movei #4,FOUR
movei #16,SIXTEEN
*for(rightRow=0; rightRow<4; rightRow++)
*{
* for(row=0; row<4; row++)
* {
* for(col=0; col<4; col++)
* {
* buffer.data[row][rightRow] += left->data[row][col] * right->data[col][rightRow];
* }
* }
*}
.colLoop:
move LEFT_INDEX,r14
move RIGHT_INDEX,r15
load (r14+PTR_MATRIX_1),LEFT
load (r15+PTR_MATRIX_2),RIGHT
mult LEFT,RIGHT ;RIGHT = (uint16_t)LEFT * (uint16_t)RIGHT
move RIGHT,PRODUCT
shrq #16,LEFT
shrq #16,RIGHT
mult LEFT,RIGHT ;RIGHT = ((uint16_t)LEFT >> 16) * ((uint16_t)RIGHT >> 16)
shlq #16,RIGHT
add RIGHT,PRODUCT ;PRODUCT = high + low
move PRODUCT_INDEX,r14
store PRODUCT,(r14+PTR_MATRIX_R)
addq #1,col
add FOUR,LEFT_INDEX
add SIXTEEN,RIGHT_INDEX
StopDSP
nop
.68000
_dsp_matrix_multiply_end::
;;; Translation.
_dsp_matrix_translation::
PTR_TRANSLATION .equr r10
TRANS_X .equr r11
TRANS_Y .equr r12
TRANS_Z .equr r13
movei #$00010000,FIXED_ONE
movei #$00000000,FIXED_ZERO
movei #_dsp_matrix_ptr_result,PTR_MATRIX
load (PTR_MATRIX),PTR_MATRIX ;dereference the pointer
movei #_dsp_matrix_vector,PTR_TRANSLATION
load (PTR_TRANSLATION),TRANS_X
addq #4,PTR_TRANSLATION
load (PTR_TRANSLATION),TRANS_Y
addq #4,PTR_TRANSLATION
load (PTR_TRANSLATION),TRANS_Z
.set_matrix_values:
store FIXED_ONE,(PTR_MATRIX) ;[0][0]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[0][1]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[0][2]
addq #4,PTR_MATRIX
store TRANS_X,(PTR_MATRIX) ;[0][3]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[1][0]
addq #4,PTR_MATRIX
store FIXED_ONE,(PTR_MATRIX) ;[1][1]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[1][2]
addq #4,PTR_MATRIX
store TRANS_Y,(PTR_MATRIX) ;[1][3]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[2][0]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[2][1]
addq #4,PTR_MATRIX
store FIXED_ONE,(PTR_MATRIX) ;[2][2]
addq #4,PTR_MATRIX
store TRANS_Z,(PTR_MATRIX) ;[2][3]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[3][0]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[3][1]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[3][2]
addq #4,PTR_MATRIX
store FIXED_ONE,(PTR_MATRIX) ;[3][3]
StopDSP
nop
.68000
_dsp_matrix_translation_end::
;;; Rotations.
.macro LoadTrigTables
movei _FIXED_SINE_TABLE,TEMP1
move TEMP1,SIN_TABLE
movei _FIXED_COSINE_TABLE,TEMP1
move TEMP1,COS_TABLE
.endm
PTR_ORIENTATION .equr r10
DEGREES .equr r11
MATRIX_OFFSET .equr r14
TRIG_TABLE_OFFSET .equr r15
FIXED_SIN .equr r16
FIXED_COS .equr r17
SIN_TABLE .equr r18
COS_TABLE .equr r19
SIN_DEGREES .equr r20
COS_DEGREES .equr r21
_dsp_matrix_x_rotation::
;; Create a rotation matrix for the X axis.
;; The orientation is in dsp_matrix_vector.
LoadTrigTables
movei #$00010000,FIXED_ONE
movei #$00000000,FIXED_ZERO
movei #G_HIDATA,r22
move FIXED_ZERO,r22
movei #_dsp_matrix_vector,PTR_ORIENTATION
movei #_dsp_matrix_ptr_result,PTR_MATRIX
load (PTR_MATRIX),PTR_MATRIX ;dereference the pointer
load (PTR_ORIENTATION),DEGREES
shrq #16,DEGREES ;take the integer section of the number
move DEGREES,TRIG_TABLE_OFFSET
shlq #2,TRIG_TABLE_OFFSET ;trig table entries are 4 bytes long
movei #$60000,TEMP1
store PTR_MATRIX,(TEMP1)
.set_matrix_values:
store FIXED_ONE,(PTR_MATRIX) ;[0][0]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[0][1]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[0][2]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[0][3]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[1][0]
addq #4,PTR_MATRIX
store COS_DEGREES,(PTR_MATRIX);[1][1]
addq #4,PTR_MATRIX
store SIN_DEGREES,(PTR_MATRIX);[1][2]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[1][3]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[2][0]
addq #4,PTR_MATRIX
move SIN_DEGREES,TEMP1
neg TEMP1
store TEMP1,(PTR_MATRIX) ;[2][1]
addq #4,PTR_MATRIX
store COS_DEGREES,(PTR_MATRIX);[2][2]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[2][3]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[3][0]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[3][1]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[3][2]
addq #4,PTR_MATRIX
store FIXED_ONE,(PTR_MATRIX) ;[3][3]
StopDSP
nop
.68000
_dsp_matrix_x_rotation_end::
_dsp_matrix_y_rotation::
;; Create a rotation matrix for the X axis.
;; The orientation is in dsp_matrix_vector.
LoadTrigTables
movei #$00010000,FIXED_ONE
movei #$00000000,FIXED_ZERO
movei #_dsp_matrix_vector,PTR_ORIENTATION
movei #_dsp_matrix_ptr_result,PTR_MATRIX
load (PTR_MATRIX),PTR_MATRIX ;dereference the pointer
movei #4,r14
load (r14+PTR_ORIENTATION),DEGREES ;get Y value
shrq #16,DEGREES ;take the integer section of the number
move DEGREES,TRIG_TABLE_OFFSET
shlq #2,TRIG_TABLE_OFFSET ;trig table entries are 4 bytes long
load (TRIG_TABLE_OFFSET+SIN_TABLE),SIN_DEGREES
load (TRIG_TABLE_OFFSET+COS_TABLE),COS_DEGREES
.set_matrix_values:
store COS_DEGREES,(PTR_MATRIX);[0][0]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[0][1]
addq #4,PTR_MATRIX
move SIN_TABLE,TEMP1
neg TEMP1
store TEMP1,(PTR_MATRIX) ;[0][2]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[0][3]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[1][0]
addq #4,PTR_MATRIX
store FIXED_ONE,(PTR_MATRIX) ;[1][1]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[1][2]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[1][3]
addq #4,PTR_MATRIX
store SIN_DEGREES,(PTR_MATRIX);[2][0]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[2][1]
addq #4,PTR_MATRIX
store COS_DEGREES,(PTR_MATRIX);[2][2]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[2][3]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[3][0]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[3][1]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[3][2]
addq #4,PTR_MATRIX
store FIXED_ONE,(PTR_MATRIX) ;[3][3]
StopDSP
nop
.68000
_dsp_matrix_y_rotation_end::
_dsp_matrix_z_rotation::
;; Create a rotation matrix for the X axis.
;; The orientation is in dsp_matrix_vector.
LoadTrigTables
movei #$00010000,FIXED_ONE
movei #$00000000,FIXED_ZERO
movei #_dsp_matrix_vector,PTR_ORIENTATION
movei #_dsp_matrix_ptr_result,PTR_MATRIX
load (PTR_MATRIX),PTR_MATRIX ;dereference the pointer
movei #8,r14
load (r14+PTR_ORIENTATION),DEGREES ;get Y value
shrq #16,DEGREES ;take the integer section of the number
move DEGREES,TRIG_TABLE_OFFSET
shlq #2,TRIG_TABLE_OFFSET ;trig table entries are 4 bytes long
load (TRIG_TABLE_OFFSET+SIN_TABLE),SIN_DEGREES
load (TRIG_TABLE_OFFSET+COS_TABLE),COS_DEGREES
.set_matrix_values:
store COS_DEGREES,(PTR_MATRIX);[0][0]
addq #4,PTR_MATRIX
store SIN_DEGREES,(PTR_MATRIX);[0][1]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[0][2]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[0][3]
addq #4,PTR_MATRIX
move SIN_DEGREES,TEMP1
neg TEMP1
store TEMP1,(PTR_MATRIX) ;[1][0]
addq #4,PTR_MATRIX
store COS_DEGREES,(PTR_MATRIX);[1][1]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[1][2]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[1][3]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[2][0]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[2][1]
addq #4,PTR_MATRIX
store FIXED_ONE,(PTR_MATRIX) ;[2][2]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[2][3]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[3][0]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[3][1]
addq #4,PTR_MATRIX
store FIXED_ZERO,(PTR_MATRIX) ;[3][2]
addq #4,PTR_MATRIX
store FIXED_ONE,(PTR_MATRIX) ;[3][3]
StopDSP
nop
.68000
_dsp_matrix_z_rotation_end::
_dsp_matrix_functions_end::
.long
;; Operands for matrix functions
_dsp_matrix_operand_1:: dcb.l 16,$AA55AA55 ;operand 1
_dsp_matrix_operand_2:: dcb.l 16,$AA55AA55 ;operand 2
_dsp_matrix_result:: dcb.l 16,$AA55AA55 ;result matrix
_dsp_matrix_vector:: dcb.l 3,$11223344 ;matrix/vector product storage
_dsp_matrix_ptr_result::dcb.l 1 ;pointer to the matrix we want to write the result to
;; Operands for vector functions
_dsp_vector_operand_1:: dcb.l 3,$11223344 ;vector operand 1
_dsp_vector_operand_2:: dcb.l 3,$11223344 ;vector operand 2
_dsp_vector_result:: dcb.l 3,$11223344 ;vector result
;; Constants
CONST_MATRIX_IDENTITY:
dc.l $00010000,$00000000,$00000000,$00000000
dc.l $00000000,$00010000,$00000000,$00000000
dc.l $00000000,$00000000,$00010000,$00000000
dc.l $00000000,$00000000,$00000000,$00010000
.68000