nkeynes@284 | 1 | /**
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nkeynes@561 | 2 | * $Id$
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nkeynes@284 | 3 | *
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nkeynes@284 | 4 | * PVR2 (Video) VRAM handling routines (mainly for the 64-bit region)
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nkeynes@284 | 5 | *
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nkeynes@284 | 6 | * Copyright (c) 2005 Nathan Keynes.
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nkeynes@284 | 7 | *
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nkeynes@284 | 8 | * This program is free software; you can redistribute it and/or modify
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nkeynes@284 | 9 | * it under the terms of the GNU General Public License as published by
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nkeynes@284 | 10 | * the Free Software Foundation; either version 2 of the License, or
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nkeynes@284 | 11 | * (at your option) any later version.
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nkeynes@284 | 12 | *
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nkeynes@284 | 13 | * This program is distributed in the hope that it will be useful,
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nkeynes@284 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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nkeynes@284 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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nkeynes@284 | 16 | * GNU General Public License for more details.
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nkeynes@284 | 17 | */
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nkeynes@645 | 18 | #include <string.h>
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nkeynes@645 | 19 | #include <stdio.h>
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nkeynes@645 | 20 | #include <errno.h>
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nkeynes@284 | 21 | #include "pvr2.h"
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nkeynes@325 | 22 | #include "asic.h"
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nkeynes@669 | 23 | #include "dream.h"
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nkeynes@284 | 24 |
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nkeynes@429 | 25 | extern unsigned char *video_base;
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nkeynes@284 | 26 |
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nkeynes@429 | 27 | void pvr2_dma_write( sh4addr_t destaddr, unsigned char *src, uint32_t count )
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nkeynes@325 | 28 | {
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nkeynes@325 | 29 | int region;
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nkeynes@325 | 30 |
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nkeynes@325 | 31 | switch( destaddr & 0x13800000 ) {
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nkeynes@325 | 32 | case 0x10000000:
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nkeynes@325 | 33 | case 0x12000000:
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nkeynes@736 | 34 | pvr2_ta_write( src, count );
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nkeynes@736 | 35 | break;
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nkeynes@325 | 36 | case 0x11000000:
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nkeynes@325 | 37 | case 0x11800000:
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nkeynes@736 | 38 | region = MMIO_READ( ASIC, PVRDMARGN1 );
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nkeynes@736 | 39 | if( region == 0 ) {
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nkeynes@736 | 40 | pvr2_vram64_write( destaddr, src, count );
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nkeynes@736 | 41 | } else {
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nkeynes@736 | 42 | unsigned char *dest = mem_get_region(destaddr);
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nkeynes@736 | 43 | memcpy( dest, src, count );
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nkeynes@736 | 44 | }
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nkeynes@736 | 45 | break;
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nkeynes@325 | 46 | case 0x10800000:
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nkeynes@325 | 47 | case 0x12800000:
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nkeynes@736 | 48 | pvr2_yuv_write( src, count );
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nkeynes@736 | 49 | break;
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nkeynes@325 | 50 | case 0x13000000:
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nkeynes@325 | 51 | case 0x13800000:
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nkeynes@736 | 52 | region = MMIO_READ( ASIC, PVRDMARGN2 );
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nkeynes@736 | 53 | if( region == 0 ) {
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nkeynes@736 | 54 | pvr2_vram64_write( destaddr, src, count );
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nkeynes@736 | 55 | } else {
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nkeynes@736 | 56 | unsigned char *dest = mem_get_region(destaddr);
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nkeynes@736 | 57 | memcpy( dest, src, count );
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nkeynes@736 | 58 | }
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nkeynes@325 | 59 | }
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nkeynes@325 | 60 | }
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nkeynes@325 | 61 |
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nkeynes@429 | 62 | void pvr2_vram64_write( sh4addr_t destaddr, unsigned char *src, uint32_t length )
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nkeynes@284 | 63 | {
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nkeynes@284 | 64 | int bank_flag = (destaddr & 0x04) >> 2;
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nkeynes@284 | 65 | uint32_t *banks[2];
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nkeynes@284 | 66 | uint32_t *dwsrc;
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nkeynes@284 | 67 | int i;
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nkeynes@284 | 68 |
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nkeynes@284 | 69 | destaddr = destaddr & 0x7FFFFF;
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nkeynes@284 | 70 | if( destaddr + length > 0x800000 ) {
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nkeynes@736 | 71 | length = 0x800000 - destaddr;
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nkeynes@284 | 72 | }
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nkeynes@284 | 73 |
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nkeynes@796 | 74 | for( i=destaddr & 0xFFFFF000; i < destaddr + length; i+= LXDREAM_PAGE_SIZE ) {
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nkeynes@736 | 75 | texcache_invalidate_page( i );
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nkeynes@284 | 76 | }
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nkeynes@284 | 77 |
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nkeynes@284 | 78 | banks[0] = ((uint32_t *)(video_base + ((destaddr & 0x007FFFF8) >>1)));
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nkeynes@284 | 79 | banks[1] = banks[0] + 0x100000;
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nkeynes@284 | 80 | if( bank_flag )
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nkeynes@736 | 81 | banks[0]++;
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nkeynes@736 | 82 |
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nkeynes@284 | 83 | /* Handle non-aligned start of source */
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nkeynes@284 | 84 | if( destaddr & 0x03 ) {
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nkeynes@736 | 85 | unsigned char *dest = ((unsigned char *)banks[bank_flag]) + (destaddr & 0x03);
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nkeynes@736 | 86 | for( i= destaddr & 0x03; i < 4 && length > 0; i++, length-- ) {
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nkeynes@736 | 87 | *dest++ = *src++;
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nkeynes@736 | 88 | }
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nkeynes@736 | 89 | bank_flag = !bank_flag;
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nkeynes@284 | 90 | }
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nkeynes@284 | 91 |
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nkeynes@284 | 92 | dwsrc = (uint32_t *)src;
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nkeynes@284 | 93 | while( length >= 4 ) {
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nkeynes@736 | 94 | *banks[bank_flag]++ = *dwsrc++;
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nkeynes@736 | 95 | bank_flag = !bank_flag;
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nkeynes@736 | 96 | length -= 4;
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nkeynes@284 | 97 | }
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nkeynes@736 | 98 |
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nkeynes@284 | 99 | /* Handle non-aligned end of source */
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nkeynes@284 | 100 | if( length ) {
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nkeynes@736 | 101 | src = (unsigned char *)dwsrc;
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nkeynes@736 | 102 | unsigned char *dest = (unsigned char *)banks[bank_flag];
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nkeynes@736 | 103 | while( length-- > 0 ) {
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nkeynes@736 | 104 | *dest++ = *src++;
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nkeynes@736 | 105 | }
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nkeynes@284 | 106 | }
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nkeynes@284 | 107 | }
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nkeynes@284 | 108 |
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nkeynes@284 | 109 | /**
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nkeynes@284 | 110 | * Write an image to 64-bit vram, with a line-stride different from the line-size.
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nkeynes@284 | 111 | * The destaddr must be 32-bit aligned, and both line_bytes and line_stride_bytes
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nkeynes@284 | 112 | * must be multiples of 4.
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nkeynes@284 | 113 | */
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nkeynes@429 | 114 | void pvr2_vram64_write_stride( sh4addr_t destaddr, unsigned char *src, uint32_t line_bytes,
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nkeynes@736 | 115 | uint32_t line_stride_bytes, uint32_t line_count )
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nkeynes@284 | 116 | {
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nkeynes@284 | 117 | int bank_flag = (destaddr & 0x04) >> 2;
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nkeynes@284 | 118 | uint32_t *banks[2];
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nkeynes@284 | 119 | uint32_t *dwsrc;
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nkeynes@284 | 120 | uint32_t line_gap;
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nkeynes@284 | 121 | int line_gap_flag;
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nkeynes@284 | 122 | int i,j;
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nkeynes@284 | 123 |
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nkeynes@284 | 124 | destaddr = destaddr & 0x7FFFF8;
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nkeynes@284 | 125 | i = line_stride_bytes - line_bytes;
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nkeynes@284 | 126 | line_gap_flag = i & 0x04;
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nkeynes@284 | 127 | line_gap = i >> 3;
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nkeynes@284 | 128 | line_bytes >>= 2;
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nkeynes@284 | 129 |
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nkeynes@796 | 130 | for( i=destaddr & 0xFFFFF000; i < destaddr + line_stride_bytes*line_count; i+= LXDREAM_PAGE_SIZE ) {
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nkeynes@736 | 131 | texcache_invalidate_page( i );
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nkeynes@284 | 132 | }
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nkeynes@284 | 133 |
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nkeynes@284 | 134 | banks[0] = (uint32_t *)(video_base + (destaddr >>1));
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nkeynes@284 | 135 | banks[1] = banks[0] + 0x100000;
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nkeynes@284 | 136 | if( bank_flag )
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nkeynes@736 | 137 | banks[0]++;
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nkeynes@736 | 138 |
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nkeynes@284 | 139 | dwsrc = (uint32_t *)src;
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nkeynes@284 | 140 | for( i=0; i<line_count; i++ ) {
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nkeynes@736 | 141 | for( j=0; j<line_bytes; j++ ) {
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nkeynes@736 | 142 | *banks[bank_flag]++ = *dwsrc++;
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nkeynes@736 | 143 | bank_flag = !bank_flag;
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nkeynes@736 | 144 | }
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nkeynes@736 | 145 | banks[0] += line_gap;
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nkeynes@736 | 146 | banks[1] += line_gap;
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nkeynes@736 | 147 | if( line_gap_flag ) {
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nkeynes@736 | 148 | banks[bank_flag]++;
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nkeynes@736 | 149 | bank_flag = !bank_flag;
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nkeynes@736 | 150 | }
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nkeynes@284 | 151 | }
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nkeynes@284 | 152 | }
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nkeynes@284 | 153 |
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nkeynes@284 | 154 | /**
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nkeynes@284 | 155 | * Read an image from 64-bit vram, with a destination line-stride different from the line-size.
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nkeynes@284 | 156 | * The srcaddr must be 32-bit aligned, and both line_bytes and line_stride_bytes
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nkeynes@284 | 157 | * must be multiples of 4. line_stride_bytes must be >= line_bytes.
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nkeynes@284 | 158 | * This method is used to extract a "stride" texture from vram.
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nkeynes@284 | 159 | */
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nkeynes@429 | 160 | void pvr2_vram64_read_stride( unsigned char *dest, uint32_t dest_line_bytes, sh4addr_t srcaddr,
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nkeynes@736 | 161 | uint32_t src_line_bytes, uint32_t line_count )
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nkeynes@284 | 162 | {
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nkeynes@284 | 163 | int bank_flag = (srcaddr & 0x04) >> 2;
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nkeynes@284 | 164 | uint32_t *banks[2];
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nkeynes@284 | 165 | uint32_t *dwdest;
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nkeynes@429 | 166 | uint32_t dest_line_gap = 0;
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nkeynes@429 | 167 | uint32_t src_line_gap = 0;
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nkeynes@284 | 168 | uint32_t line_bytes;
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nkeynes@284 | 169 | int src_line_gap_flag;
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nkeynes@284 | 170 | int i,j;
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nkeynes@284 | 171 |
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nkeynes@284 | 172 | srcaddr = srcaddr & 0x7FFFF8;
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nkeynes@284 | 173 | if( src_line_bytes <= dest_line_bytes ) {
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nkeynes@736 | 174 | dest_line_gap = (dest_line_bytes - src_line_bytes) >> 2;
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nkeynes@736 | 175 | src_line_gap = 0;
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nkeynes@736 | 176 | src_line_gap_flag = 0;
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nkeynes@736 | 177 | line_bytes = src_line_bytes >> 2;
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nkeynes@284 | 178 | } else {
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nkeynes@736 | 179 | i = (src_line_bytes - dest_line_bytes);
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nkeynes@736 | 180 | src_line_gap_flag = i & 0x04;
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nkeynes@736 | 181 | src_line_gap = i >> 3;
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nkeynes@736 | 182 | line_bytes = dest_line_bytes >> 2;
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nkeynes@284 | 183 | }
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nkeynes@736 | 184 |
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nkeynes@284 | 185 | banks[0] = (uint32_t *)(video_base + (srcaddr>>1));
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nkeynes@284 | 186 | banks[1] = banks[0] + 0x100000;
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nkeynes@284 | 187 | if( bank_flag )
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nkeynes@736 | 188 | banks[0]++;
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nkeynes@736 | 189 |
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nkeynes@284 | 190 | dwdest = (uint32_t *)dest;
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nkeynes@284 | 191 | for( i=0; i<line_count; i++ ) {
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nkeynes@736 | 192 | for( j=0; j<line_bytes; j++ ) {
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nkeynes@736 | 193 | *dwdest++ = *banks[bank_flag]++;
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nkeynes@736 | 194 | bank_flag = !bank_flag;
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nkeynes@736 | 195 | }
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nkeynes@736 | 196 | dwdest += dest_line_gap;
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nkeynes@736 | 197 | banks[0] += src_line_gap;
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nkeynes@736 | 198 | banks[1] += src_line_gap;
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nkeynes@736 | 199 | if( src_line_gap_flag ) {
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nkeynes@736 | 200 | banks[bank_flag]++;
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nkeynes@736 | 201 | bank_flag = !bank_flag;
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nkeynes@736 | 202 | }
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nkeynes@310 | 203 | }
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nkeynes@310 | 204 | }
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nkeynes@310 | 205 |
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nkeynes@315 | 206 |
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nkeynes@310 | 207 | /**
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nkeynes@310 | 208 | * @param dest Destination image buffer
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nkeynes@310 | 209 | * @param banks Source data expressed as two bank pointers
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nkeynes@310 | 210 | * @param offset Offset into banks[0] specifying where the next byte
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nkeynes@310 | 211 | * to read is (0..3)
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nkeynes@310 | 212 | * @param x1,y1 Destination coordinates
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nkeynes@310 | 213 | * @param width Width of current destination block
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nkeynes@315 | 214 | * @param stride Total width of image (ie stride) in bytes
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nkeynes@315 | 215 | */
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nkeynes@315 | 216 |
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nkeynes@315 | 217 | static void pvr2_vram64_detwiddle_4( uint8_t *dest, uint8_t *banks[2], int offset,
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nkeynes@736 | 218 | int x1, int y1, int width, int stride )
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nkeynes@315 | 219 | {
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nkeynes@315 | 220 | if( width == 2 ) {
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nkeynes@736 | 221 | x1 = x1 >> 1;
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nkeynes@736 | 222 | uint8_t t1 = *banks[offset<4?0:1]++;
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nkeynes@736 | 223 | uint8_t t2 = *banks[offset<3?0:1]++;
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nkeynes@736 | 224 | dest[y1*stride + x1] = (t1 & 0x0F) | (t2<<4);
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nkeynes@736 | 225 | dest[(y1+1)*stride + x1] = (t1>>4) | (t2&0xF0);
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nkeynes@315 | 226 | } else if( width == 4 ) {
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nkeynes@736 | 227 | pvr2_vram64_detwiddle_4( dest, banks, offset, x1, y1, 2, stride );
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nkeynes@736 | 228 | pvr2_vram64_detwiddle_4( dest, banks, offset+2, x1, y1+2, 2, stride );
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nkeynes@736 | 229 | pvr2_vram64_detwiddle_4( dest, banks, offset+4, x1+2, y1, 2, stride );
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nkeynes@736 | 230 | pvr2_vram64_detwiddle_4( dest, banks, offset+6, x1+2, y1+2, 2, stride );
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nkeynes@736 | 231 |
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nkeynes@315 | 232 | } else {
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nkeynes@736 | 233 | int subdivide = width >> 1;
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nkeynes@736 | 234 | pvr2_vram64_detwiddle_4( dest, banks, offset, x1, y1, subdivide, stride );
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nkeynes@736 | 235 | pvr2_vram64_detwiddle_4( dest, banks, offset, x1, y1+subdivide, subdivide, stride );
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nkeynes@736 | 236 | pvr2_vram64_detwiddle_4( dest, banks, offset, x1+subdivide, y1, subdivide, stride );
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nkeynes@736 | 237 | pvr2_vram64_detwiddle_4( dest, banks, offset, x1+subdivide, y1+subdivide, subdivide, stride );
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nkeynes@315 | 238 | }
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nkeynes@315 | 239 | }
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nkeynes@315 | 240 |
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nkeynes@315 | 241 | /**
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nkeynes@315 | 242 | * @param dest Destination image buffer
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nkeynes@315 | 243 | * @param banks Source data expressed as two bank pointers
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nkeynes@315 | 244 | * @param offset Offset into banks[0] specifying where the next byte
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nkeynes@315 | 245 | * to read is (0..3)
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nkeynes@315 | 246 | * @param x1,y1 Destination coordinates
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nkeynes@315 | 247 | * @param width Width of current destination block
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nkeynes@315 | 248 | * @param stride Total width of image (ie stride)
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nkeynes@310 | 249 | */
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nkeynes@310 | 250 |
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nkeynes@310 | 251 | static void pvr2_vram64_detwiddle_8( uint8_t *dest, uint8_t *banks[2], int offset,
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nkeynes@736 | 252 | int x1, int y1, int width, int stride )
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nkeynes@310 | 253 | {
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nkeynes@310 | 254 | if( width == 2 ) {
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nkeynes@736 | 255 | dest[y1*stride + x1] = *banks[0]++;
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nkeynes@736 | 256 | dest[(y1+1)*stride + x1] = *banks[offset<3?0:1]++;
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nkeynes@736 | 257 | dest[y1*stride + x1 + 1] = *banks[offset<2?0:1]++;
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nkeynes@736 | 258 | dest[(y1+1)*stride + x1 + 1] = *banks[offset==0?0:1]++;
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nkeynes@736 | 259 | uint8_t *tmp = banks[0]; /* swap banks */
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nkeynes@736 | 260 | banks[0] = banks[1];
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nkeynes@736 | 261 | banks[1] = tmp;
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nkeynes@310 | 262 | } else {
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nkeynes@736 | 263 | int subdivide = width >> 1;
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nkeynes@736 | 264 | pvr2_vram64_detwiddle_8( dest, banks, offset, x1, y1, subdivide, stride );
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nkeynes@736 | 265 | pvr2_vram64_detwiddle_8( dest, banks, offset, x1, y1+subdivide, subdivide, stride );
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nkeynes@736 | 266 | pvr2_vram64_detwiddle_8( dest, banks, offset, x1+subdivide, y1, subdivide, stride );
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nkeynes@736 | 267 | pvr2_vram64_detwiddle_8( dest, banks, offset, x1+subdivide, y1+subdivide, subdivide, stride );
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nkeynes@284 | 268 | }
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nkeynes@310 | 269 | }
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nkeynes@310 | 270 |
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nkeynes@310 | 271 | /**
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nkeynes@310 | 272 | * @param dest Destination image buffer
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nkeynes@310 | 273 | * @param banks Source data expressed as two bank pointers
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nkeynes@310 | 274 | * @param offset Offset into banks[0] specifying where the next word
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nkeynes@310 | 275 | * to read is (0 or 1)
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nkeynes@310 | 276 | * @param x1,y1 Destination coordinates
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nkeynes@310 | 277 | * @param width Width of current destination block
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nkeynes@315 | 278 | * @param stride Total width of image (ie stride)
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nkeynes@310 | 279 | */
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nkeynes@310 | 280 |
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nkeynes@310 | 281 | static void pvr2_vram64_detwiddle_16( uint16_t *dest, uint16_t *banks[2], int offset,
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nkeynes@736 | 282 | int x1, int y1, int width, int stride )
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nkeynes@310 | 283 | {
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nkeynes@310 | 284 | if( width == 2 ) {
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nkeynes@736 | 285 | dest[y1*stride + x1] = *banks[0]++;
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nkeynes@736 | 286 | dest[(y1+1)*stride + x1] = *banks[offset]++;
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nkeynes@736 | 287 | dest[y1*stride + x1 + 1] = *banks[1]++;
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nkeynes@736 | 288 | dest[(y1+1)*stride + x1 + 1] = *banks[offset^1]++;
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nkeynes@310 | 289 | } else {
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nkeynes@736 | 290 | int subdivide = width >> 1;
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nkeynes@736 | 291 | pvr2_vram64_detwiddle_16( dest, banks, offset, x1, y1, subdivide, stride );
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nkeynes@736 | 292 | pvr2_vram64_detwiddle_16( dest, banks, offset, x1, y1+subdivide, subdivide, stride );
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nkeynes@736 | 293 | pvr2_vram64_detwiddle_16( dest, banks, offset, x1+subdivide, y1, subdivide, stride );
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nkeynes@736 | 294 | pvr2_vram64_detwiddle_16( dest, banks, offset, x1+subdivide, y1+subdivide, subdivide, stride );
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nkeynes@310 | 295 | }
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nkeynes@310 | 296 | }
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nkeynes@310 | 297 |
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nkeynes@310 | 298 | /**
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nkeynes@315 | 299 | * Read an image from 64-bit vram stored as twiddled 4-bit pixels. The
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nkeynes@315 | 300 | * image is written out to the destination in detwiddled form.
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nkeynes@315 | 301 | * @param dest destination buffer, which must be at least width*height/2 in length
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nkeynes@315 | 302 | * @param srcaddr source address in vram
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nkeynes@315 | 303 | * @param width image width (must be a power of 2)
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nkeynes@315 | 304 | * @param height image height (must be a power of 2)
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nkeynes@315 | 305 | */
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nkeynes@429 | 306 | void pvr2_vram64_read_twiddled_4( unsigned char *dest, sh4addr_t srcaddr, uint32_t width, uint32_t height )
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nkeynes@315 | 307 | {
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nkeynes@315 | 308 | int offset_flag = (srcaddr & 0x07);
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nkeynes@315 | 309 | uint8_t *banks[2];
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nkeynes@315 | 310 | uint8_t *wdest = (uint8_t*)dest;
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nkeynes@315 | 311 | uint32_t stride = width >> 1;
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nkeynes@429 | 312 | int i;
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nkeynes@315 | 313 |
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nkeynes@315 | 314 | srcaddr = srcaddr & 0x7FFFF8;
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nkeynes@315 | 315 |
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nkeynes@315 | 316 | banks[0] = (uint8_t *)(video_base + (srcaddr>>1));
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nkeynes@315 | 317 | banks[1] = banks[0] + 0x400000;
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nkeynes@315 | 318 | if( offset_flag & 0x04 ) { // If source is not 64-bit aligned, swap the banks
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nkeynes@736 | 319 | uint8_t *tmp = banks[0];
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nkeynes@736 | 320 | banks[0] = banks[1];
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nkeynes@736 | 321 | banks[1] = tmp + 4;
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nkeynes@736 | 322 | offset_flag &= 0x03;
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nkeynes@315 | 323 | }
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nkeynes@315 | 324 | banks[0] += offset_flag;
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nkeynes@315 | 325 |
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nkeynes@315 | 326 | if( width > height ) {
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nkeynes@736 | 327 | for( i=0; i<width; i+=height ) {
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nkeynes@736 | 328 | pvr2_vram64_detwiddle_4( wdest, banks, offset_flag, i, 0, height, stride );
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nkeynes@736 | 329 | }
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nkeynes@315 | 330 | } else if( height > width ) {
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nkeynes@736 | 331 | for( i=0; i<height; i+=width ) {
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nkeynes@736 | 332 | pvr2_vram64_detwiddle_4( wdest, banks, offset_flag, 0, i, width, stride );
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nkeynes@736 | 333 | }
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nkeynes@315 | 334 | } else if( width == 1 ) {
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nkeynes@736 | 335 | *wdest = *banks[0];
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nkeynes@315 | 336 | } else {
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nkeynes@736 | 337 | pvr2_vram64_detwiddle_4( wdest, banks, offset_flag, 0, 0, width, stride );
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nkeynes@315 | 338 | }
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nkeynes@315 | 339 | }
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nkeynes@315 | 340 |
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nkeynes@315 | 341 | /**
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nkeynes@310 | 342 | * Read an image from 64-bit vram stored as twiddled 8-bit pixels. The
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nkeynes@310 | 343 | * image is written out to the destination in detwiddled form.
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nkeynes@310 | 344 | * @param dest destination buffer, which must be at least width*height in length
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nkeynes@310 | 345 | * @param srcaddr source address in vram
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nkeynes@310 | 346 | * @param width image width (must be a power of 2)
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nkeynes@310 | 347 | * @param height image height (must be a power of 2)
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nkeynes@310 | 348 | */
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nkeynes@429 | 349 | void pvr2_vram64_read_twiddled_8( unsigned char *dest, sh4addr_t srcaddr, uint32_t width, uint32_t height )
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nkeynes@310 | 350 | {
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nkeynes@310 | 351 | int offset_flag = (srcaddr & 0x07);
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nkeynes@310 | 352 | uint8_t *banks[2];
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nkeynes@310 | 353 | uint8_t *wdest = (uint8_t*)dest;
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nkeynes@429 | 354 | int i;
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nkeynes@310 | 355 |
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nkeynes@310 | 356 | srcaddr = srcaddr & 0x7FFFF8;
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nkeynes@310 | 357 |
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nkeynes@310 | 358 | banks[0] = (uint8_t *)(video_base + (srcaddr>>1));
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nkeynes@310 | 359 | banks[1] = banks[0] + 0x400000;
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nkeynes@310 | 360 | if( offset_flag & 0x04 ) { // If source is not 64-bit aligned, swap the banks
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nkeynes@736 | 361 | uint8_t *tmp = banks[0];
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nkeynes@736 | 362 | banks[0] = banks[1];
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nkeynes@736 | 363 | banks[1] = tmp + 4;
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nkeynes@736 | 364 | offset_flag &= 0x03;
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nkeynes@310 | 365 | }
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nkeynes@310 | 366 | banks[0] += offset_flag;
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nkeynes@310 | 367 |
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nkeynes@310 | 368 | if( width > height ) {
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nkeynes@736 | 369 | for( i=0; i<width; i+=height ) {
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nkeynes@736 | 370 | pvr2_vram64_detwiddle_8( wdest, banks, offset_flag, i, 0, height, width );
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nkeynes@736 | 371 | }
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nkeynes@310 | 372 | } else if( height > width ) {
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nkeynes@736 | 373 | for( i=0; i<height; i+=width ) {
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nkeynes@736 | 374 | pvr2_vram64_detwiddle_8( wdest, banks, offset_flag, 0, i, width, width );
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nkeynes@736 | 375 | }
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nkeynes@310 | 376 | } else if( width == 1 ) {
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nkeynes@736 | 377 | *wdest = *banks[0];
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nkeynes@310 | 378 | } else {
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nkeynes@736 | 379 | pvr2_vram64_detwiddle_8( wdest, banks, offset_flag, 0, 0, width, width );
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nkeynes@310 | 380 | }
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nkeynes@310 | 381 | }
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nkeynes@310 | 382 |
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nkeynes@310 | 383 | /**
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nkeynes@310 | 384 | * Read an image from 64-bit vram stored as twiddled 16-bit pixels. The
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nkeynes@310 | 385 | * image is written out to the destination in detwiddled form.
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nkeynes@310 | 386 | * @param dest destination buffer, which must be at least width*height*2 in length
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nkeynes@310 | 387 | * @param srcaddr source address in vram (must be 16-bit aligned)
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nkeynes@310 | 388 | * @param width image width (must be a power of 2)
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nkeynes@310 | 389 | * @param height image height (must be a power of 2)
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nkeynes@310 | 390 | */
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nkeynes@429 | 391 | void pvr2_vram64_read_twiddled_16( unsigned char *dest, sh4addr_t srcaddr, uint32_t width, uint32_t height ) {
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nkeynes@310 | 392 | int offset_flag = (srcaddr & 0x06) >> 1;
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nkeynes@310 | 393 | uint16_t *banks[2];
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nkeynes@310 | 394 | uint16_t *wdest = (uint16_t*)dest;
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nkeynes@429 | 395 | int i;
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nkeynes@310 | 396 |
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nkeynes@310 | 397 | srcaddr = srcaddr & 0x7FFFF8;
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nkeynes@310 | 398 |
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nkeynes@310 | 399 | banks[0] = (uint16_t *)(video_base + (srcaddr>>1));
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nkeynes@310 | 400 | banks[1] = banks[0] + 0x200000;
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nkeynes@310 | 401 | if( offset_flag & 0x02 ) { // If source is not 64-bit aligned, swap the banks
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nkeynes@736 | 402 | uint16_t *tmp = banks[0];
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nkeynes@736 | 403 | banks[0] = banks[1];
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nkeynes@736 | 404 | banks[1] = tmp + 2;
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nkeynes@736 | 405 | offset_flag &= 0x01;
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nkeynes@310 | 406 | }
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nkeynes@310 | 407 | banks[0] += offset_flag;
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nkeynes@736 | 408 |
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nkeynes@310 | 409 |
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nkeynes@310 | 410 | if( width > height ) {
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nkeynes@736 | 411 | for( i=0; i<width; i+=height ) {
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nkeynes@736 | 412 | pvr2_vram64_detwiddle_16( wdest, banks, offset_flag, i, 0, height, width );
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nkeynes@736 | 413 | }
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nkeynes@310 | 414 | } else if( height > width ) {
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nkeynes@736 | 415 | for( i=0; i<height; i+=width ) {
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nkeynes@736 | 416 | pvr2_vram64_detwiddle_16( wdest, banks, offset_flag, 0, i, width, width );
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nkeynes@736 | 417 | }
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nkeynes@310 | 418 | } else if( width == 1 ) {
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nkeynes@736 | 419 | *wdest = *banks[0];
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nkeynes@310 | 420 | } else {
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nkeynes@736 | 421 | pvr2_vram64_detwiddle_16( wdest, banks, offset_flag, 0, 0, width, width );
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nkeynes@310 | 422 | }
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nkeynes@284 | 423 | }
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nkeynes@284 | 424 |
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nkeynes@429 | 425 | void pvr2_vram_write_invert( sh4addr_t destaddr, unsigned char *src, uint32_t length, uint32_t line_length,
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nkeynes@736 | 426 | uint32_t src_stride )
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nkeynes@284 | 427 | {
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nkeynes@429 | 428 | unsigned char *dest = video_base + (destaddr & 0x007FFFFF);
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nkeynes@429 | 429 | unsigned char *p = src + length - src_stride;
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nkeynes@284 | 430 | while( p >= src ) {
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nkeynes@736 | 431 | memcpy( dest, p, line_length );
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nkeynes@736 | 432 | p -= src_stride;
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nkeynes@736 | 433 | dest += line_length;
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nkeynes@284 | 434 | }
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nkeynes@284 | 435 | }
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nkeynes@284 | 436 |
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nkeynes@429 | 437 | void pvr2_vram64_read( unsigned char *dest, sh4addr_t srcaddr, uint32_t length )
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nkeynes@284 | 438 | {
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nkeynes@284 | 439 | int bank_flag = (srcaddr & 0x04) >> 2;
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nkeynes@284 | 440 | uint32_t *banks[2];
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nkeynes@284 | 441 | uint32_t *dwdest;
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nkeynes@284 | 442 | int i;
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nkeynes@284 | 443 |
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nkeynes@284 | 444 | srcaddr = srcaddr & 0x7FFFFF;
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nkeynes@284 | 445 | if( srcaddr + length > 0x800000 )
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nkeynes@736 | 446 | length = 0x800000 - srcaddr;
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nkeynes@284 | 447 |
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nkeynes@284 | 448 | banks[0] = ((uint32_t *)(video_base + ((srcaddr&0x007FFFF8)>>1)));
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nkeynes@284 | 449 | banks[1] = banks[0] + 0x100000;
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nkeynes@284 | 450 | if( bank_flag )
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nkeynes@736 | 451 | banks[0]++;
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nkeynes@736 | 452 |
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nkeynes@284 | 453 | /* Handle non-aligned start of source */
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nkeynes@284 | 454 | if( srcaddr & 0x03 ) {
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nkeynes@736 | 455 | char *src = ((char *)banks[bank_flag]) + (srcaddr & 0x03);
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nkeynes@736 | 456 | for( i= srcaddr & 0x03; i < 4 && length > 0; i++, length-- ) {
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nkeynes@736 | 457 | *dest++ = *src++;
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nkeynes@736 | 458 | }
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nkeynes@736 | 459 | bank_flag = !bank_flag;
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nkeynes@284 | 460 | }
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nkeynes@284 | 461 |
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nkeynes@284 | 462 | dwdest = (uint32_t *)dest;
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nkeynes@284 | 463 | while( length >= 4 ) {
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nkeynes@736 | 464 | *dwdest++ = *banks[bank_flag]++;
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nkeynes@736 | 465 | bank_flag = !bank_flag;
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nkeynes@736 | 466 | length -= 4;
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nkeynes@284 | 467 | }
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nkeynes@736 | 468 |
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nkeynes@284 | 469 | /* Handle non-aligned end of source */
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nkeynes@284 | 470 | if( length ) {
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nkeynes@736 | 471 | dest = (unsigned char *)dwdest;
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nkeynes@736 | 472 | unsigned char *src = (unsigned char *)banks[bank_flag];
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nkeynes@736 | 473 | while( length-- > 0 ) {
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nkeynes@736 | 474 | *dest++ = *src++;
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nkeynes@736 | 475 | }
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nkeynes@284 | 476 | }
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nkeynes@284 | 477 | }
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nkeynes@284 | 478 |
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nkeynes@309 | 479 | void pvr2_vram64_dump_file( sh4addr_t addr, uint32_t length, gchar *filename )
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nkeynes@309 | 480 | {
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nkeynes@309 | 481 | uint32_t tmp[length>>2];
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nkeynes@309 | 482 | FILE *f = fopen(filename, "wo");
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nkeynes@309 | 483 | unsigned int i, j;
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nkeynes@309 | 484 |
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nkeynes@309 | 485 | if( f == NULL ) {
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nkeynes@736 | 486 | ERROR( "Unable to write to dump file '%s' (%s)", filename, strerror(errno) );
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nkeynes@736 | 487 | return;
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nkeynes@309 | 488 | }
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nkeynes@429 | 489 | pvr2_vram64_read( (unsigned char *)tmp, addr, length );
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nkeynes@309 | 490 | fprintf( f, "%08X\n", addr );
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nkeynes@309 | 491 | for( i =0; i<length>>2; i+=8 ) {
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nkeynes@736 | 492 | for( j=i; j<i+8; j++ ) {
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nkeynes@736 | 493 | if( j < length )
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nkeynes@736 | 494 | fprintf( f, " %08X", tmp[j] );
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nkeynes@736 | 495 | else
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nkeynes@736 | 496 | fprintf( f, " " );
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nkeynes@736 | 497 | }
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nkeynes@736 | 498 | fprintf( f, "\n" );
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nkeynes@309 | 499 | }
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nkeynes@309 | 500 | fclose(f);
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nkeynes@309 | 501 | }
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nkeynes@309 | 502 |
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nkeynes@284 | 503 | void pvr2_vram64_dump( sh4addr_t addr, uint32_t length, FILE *f )
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nkeynes@284 | 504 | {
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nkeynes@429 | 505 | unsigned char tmp[length];
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nkeynes@284 | 506 | pvr2_vram64_read( tmp, addr, length );
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nkeynes@284 | 507 | fwrite_dump( tmp, length, f );
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nkeynes@284 | 508 | }
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nkeynes@315 | 509 |
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nkeynes@315 | 510 |
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nkeynes@315 | 511 |
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nkeynes@315 | 512 | /**
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nkeynes@315 | 513 | * Flush the indicated render buffer back to PVR. Caller is responsible for
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nkeynes@315 | 514 | * tracking whether there is actually anything in the buffer.
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nkeynes@315 | 515 | *
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nkeynes@315 | 516 | * @param buffer A render buffer indicating the address to store to, and the
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nkeynes@315 | 517 | * format the data needs to be in.
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nkeynes@315 | 518 | * @param backBuffer TRUE to flush the back buffer, FALSE for
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nkeynes@315 | 519 | * the front buffer.
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nkeynes@315 | 520 | */
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nkeynes@352 | 521 | void pvr2_render_buffer_copy_to_sh4( render_buffer_t buffer )
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nkeynes@315 | 522 | {
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nkeynes@429 | 523 | if( (buffer->address & 0xFF000000) == 0x04000000 ) {
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nkeynes@736 | 524 | /* Interlaced buffer. Go the double copy... :( */
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nkeynes@736 | 525 | unsigned char target[buffer->size];
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nkeynes@736 | 526 | display_driver->read_render_buffer( target, buffer, buffer->rowstride, buffer->colour_format );
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nkeynes@736 | 527 | pvr2_vram64_write( buffer->address, target, buffer->size );
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nkeynes@315 | 528 | } else {
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nkeynes@736 | 529 | /* Regular buffer */
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nkeynes@429 | 530 | unsigned char target[buffer->size];
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nkeynes@736 | 531 | int line_size = buffer->width * colour_formats[buffer->colour_format].bpp;
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nkeynes@736 | 532 | display_driver->read_render_buffer( target, buffer, buffer->rowstride, buffer->colour_format );
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nkeynes@352 | 533 | if( (buffer->scale & 0xFFFF) == 0x0800 ) {
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nkeynes@352 | 534 | pvr2_vram_write_invert( buffer->address, target, buffer->size, line_size, line_size << 1 );
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nkeynes@352 | 535 | } else {
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nkeynes@352 | 536 | pvr2_vram_write_invert( buffer->address, target, buffer->size, line_size, line_size );
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nkeynes@352 | 537 | }
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nkeynes@315 | 538 | }
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nkeynes@315 | 539 | }
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nkeynes@315 | 540 |
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