lxdream.org :: lxdream/src/asic.c r1269:50c63f63bf8f

filename	src/asic.c
changeset	1269:50c63f63bf8f
prev	1237:377077d10d62
author	nkeynes
date	Tue Mar 20 08:29:38 2012 +1000 (12 years ago)
permissions	-rw-r--r--
last change	More android WIP - Implement onPause/onResume (although resume is not actually working yet) - Implement BGRA => RGBA texture conversion (BGRA doesn't seem to work on the TFP) Boot swirl is now displayed, albeit depth buffering seems to be broken.

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     1.1 --- a/src/asic.c	Sat Feb 25 09:56:10 2012 +1000
     1.2 +++ b/src/asic.c	Tue Mar 20 08:29:38 2012 +1000
     1.3 @@ -337,17 +337,25 @@
     1.4  {
     1.5      sh4addr_t destaddr = MMIO_READ( ASIC, PVRDMADEST) &0x1FFFFFE0;
     1.6      uint32_t count = MMIO_READ( ASIC, PVRDMACNT );
     1.7 -    unsigned char *data = alloca( count );
     1.8 -    uint32_t rcount = DMAC_get_buffer( 2, data, count );
     1.9 -    if( rcount != count )
    1.10 -        WARN( "PVR received %08X bytes from DMA, expected %08X", rcount, count );
    1.11 +    unsigned char data[8192];
    1.12 +    uint32_t rcount;
    1.13  
    1.14 -    pvr2_dma_write( destaddr, data, rcount );
    1.15 +    while( count ) {
    1.16 +        uint32_t chunksize = (count < 8192) ? count : 8192;
    1.17 +        rcount = DMAC_get_buffer( 2, data, chunksize );
    1.18 +        pvr2_dma_write( destaddr, data, rcount );
    1.19 +        destaddr += rcount;
    1.20 +        count -= rcount;
    1.21 +        if( rcount != chunksize ) {
    1.22 +            WARN( "PVR received %08X bytes from DMA, expected %08X", rcount, chunksize );
    1.23 +            break;
    1.24 +        }
    1.25 +    }
    1.26  
    1.27      MMIO_WRITE( ASIC, PVRDMACTL, 0 );
    1.28      MMIO_WRITE( ASIC, PVRDMACNT, 0 );
    1.29      if( destaddr & 0x01000000 ) { /* Write to texture RAM */
    1.30 -        MMIO_WRITE( ASIC, PVRDMADEST, destaddr + rcount );
    1.31 +        MMIO_WRITE( ASIC, PVRDMADEST, destaddr );
    1.32      }
    1.33      asic_event( EVENT_PVR_DMA );
    1.34  }