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1516 lines
52 KiB
1516 lines
52 KiB
/******************************Module*Header*******************************\
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* Module Name: bitblt.c
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*
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* Contains the high-level DrvBitBlt and DrvCopyBits functions. The low-
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* level stuff lives in 'blt.c'.
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*
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* !!! Change note about 'iType'
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*
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* Note: Since we've implemented device-bitmaps, any surface that GDI passes
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* to us can have 3 values for its 'iType': STYPE_BITMAP, STYPE_DEVICE
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* or STYPE_DEVBITMAP. We filter device-bitmaps that we've stored
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* as DIBs fairly high in the code, so after we adjust its 'pptlSrc',
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* we can treat STYPE_DEVBITMAP surfaces the same as STYPE_DEVICE
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* surfaces (e.g., a blt from an off-screen device bitmap to the screen
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* gets treated as a normal screen-to-screen blt). So throughout
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* this code, we will compare a surface's 'iType' to STYPE_BITMAP:
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* if it's equal, we've got a true DIB, and if it's unequal, we have
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* a screen-to-screen operation.
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*
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* Copyright (c) 1992-1995 Microsoft Corporation
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*
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\**************************************************************************/
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#include "precomp.h"
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/******************************Public*Data*********************************\
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* Rop-needs-pattern table
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*
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* Determines if a rop2 needs uses a pattern.
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*
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* Use 'gabRopNeedsPattern[(rop3 >> 2) & 0xf]', but note that this can only
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* be done if it is known that the rop3 doesn't use a source.
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*
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\**************************************************************************/
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BYTE gabRopNeedsPattern[] =
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{
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FALSE, // R2_BLACK
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TRUE, // R2_NOTMERGEPEN
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TRUE, // R2_MASKNOTPEN
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TRUE, // R2_NOTCOPYPEN
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TRUE, // R2_MASKPENNOT
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FALSE, // R2_NOT
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TRUE, // R2_XORPEN
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TRUE, // R2_NOTMASKPEN
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TRUE, // R2_MASKPEN
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TRUE, // R2_NOTXORPEN
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FALSE, // R2_NOP
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TRUE, // R2_MERGENOTPEN
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TRUE, // R2_COPYPEN
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TRUE, // R2_MERGEPENNOT
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TRUE, // R2_MERGEPEN
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FALSE, // R2_WHITE
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};
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/******************************Public*Data*********************************\
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* Mix-needs-pattern table
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*
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* Determines if a mix uses a pattern.
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*
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* Use 'gabMixNeedsPattern[mix & 0xf]' or 'gabMixNeedsPattern[mix & 0xff]'.
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*
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\**************************************************************************/
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BYTE gabMixNeedsPattern[] =
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{
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FALSE, // R2_WHITE - Allow rop = gaRop3FromMix[mix & 0x0F]
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FALSE, // R2_BLACK
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TRUE, // R2_NOTMERGEPEN
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TRUE, // R2_MASKNOTPEN
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TRUE, // R2_NOTCOPYPEN
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TRUE, // R2_MASKPENNOT
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FALSE, // R2_NOT
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TRUE, // R2_XORPEN
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TRUE, // R2_NOTMASKPEN
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TRUE, // R2_MASKPEN
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TRUE, // R2_NOTXORPEN
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FALSE, // R2_NOP
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TRUE, // R2_MERGENOTPEN
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TRUE, // R2_COPYPEN
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TRUE, // R2_MERGEPENNOT
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TRUE, // R2_MERGEPEN
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FALSE, // R2_WHITE - Allow rop = gaRop3FromMix[mix & 0xFF]
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};
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/******************************Public*Data*********************************\
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* MIX translation table
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*
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* Translates a mix 1-16, into an old style Rop 0-255.
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*
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\**************************************************************************/
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BYTE gaRop3FromMix[] =
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{
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0xFF, // R2_WHITE - Allow rop = gaRop3FromMix[mix & 0x0F]
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0x00, // R2_BLACK
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0x05, // R2_NOTMERGEPEN
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0x0A, // R2_MASKNOTPEN
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0x0F, // R2_NOTCOPYPEN
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0x50, // R2_MASKPENNOT
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0x55, // R2_NOT
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0x5A, // R2_XORPEN
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0x5F, // R2_NOTMASKPEN
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0xA0, // R2_MASKPEN
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0xA5, // R2_NOTXORPEN
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0xAA, // R2_NOP
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0xAF, // R2_MERGENOTPEN
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0xF0, // R2_COPYPEN
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0xF5, // R2_MERGEPENNOT
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0xFA, // R2_MERGEPEN
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0xFF // R2_WHITE - Allow rop = gaRop3FromMix[mix & 0xFF]
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};
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#if DBG
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// This table is big, so we only use to aid in debugging...
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/******************************Public*Data*********************************\
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* ROP3 translation table - Use only for debugging
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*
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* Translates the usual ternary rop into A-vector notation. Each bit in
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* this new notation corresponds to a term in a polynomial translation of
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* the rop.
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*
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* Rop(D,S,P) = a + a D + a S + a P + a DS + a DP + a SP + a DSP
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* 0 d s p ds dp sp dsp
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*
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\**************************************************************************/
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BYTE gajRop3[] =
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{
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0x00, 0xff, 0xb2, 0x4d, 0xd4, 0x2b, 0x66, 0x99,
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0x90, 0x6f, 0x22, 0xdd, 0x44, 0xbb, 0xf6, 0x09,
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0xe8, 0x17, 0x5a, 0xa5, 0x3c, 0xc3, 0x8e, 0x71,
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0x78, 0x87, 0xca, 0x35, 0xac, 0x53, 0x1e, 0xe1,
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0xa0, 0x5f, 0x12, 0xed, 0x74, 0x8b, 0xc6, 0x39,
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0x30, 0xcf, 0x82, 0x7d, 0xe4, 0x1b, 0x56, 0xa9,
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0x48, 0xb7, 0xfa, 0x05, 0x9c, 0x63, 0x2e, 0xd1,
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0xd8, 0x27, 0x6a, 0x95, 0x0c, 0xf3, 0xbe, 0x41,
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0xc0, 0x3f, 0x72, 0x8d, 0x14, 0xeb, 0xa6, 0x59,
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0x50, 0xaf, 0xe2, 0x1d, 0x84, 0x7b, 0x36, 0xc9,
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0x28, 0xd7, 0x9a, 0x65, 0xfc, 0x03, 0x4e, 0xb1,
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0xb8, 0x47, 0x0a, 0xf5, 0x6c, 0x93, 0xde, 0x21,
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0x60, 0x9f, 0xd2, 0x2d, 0xb4, 0x4b, 0x06, 0xf9,
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0xf0, 0x0f, 0x42, 0xbd, 0x24, 0xdb, 0x96, 0x69,
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0x88, 0x77, 0x3a, 0xc5, 0x5c, 0xa3, 0xee, 0x11,
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0x18, 0xe7, 0xaa, 0x55, 0xcc, 0x33, 0x7e, 0x81,
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0x80, 0x7f, 0x32, 0xcd, 0x54, 0xab, 0xe6, 0x19,
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0x10, 0xef, 0xa2, 0x5d, 0xc4, 0x3b, 0x76, 0x89,
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0x68, 0x97, 0xda, 0x25, 0xbc, 0x43, 0x0e, 0xf1,
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0xf8, 0x07, 0x4a, 0xb5, 0x2c, 0xd3, 0x9e, 0x61,
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0x20, 0xdf, 0x92, 0x6d, 0xf4, 0x0b, 0x46, 0xb9,
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0xb0, 0x4f, 0x02, 0xfd, 0x64, 0x9b, 0xd6, 0x29,
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0xc8, 0x37, 0x7a, 0x85, 0x1c, 0xe3, 0xae, 0x51,
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0x58, 0xa7, 0xea, 0x15, 0x8c, 0x73, 0x3e, 0xc1,
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0x40, 0xbf, 0xf2, 0x0d, 0x94, 0x6b, 0x26, 0xd9,
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0xd0, 0x2f, 0x62, 0x9d, 0x04, 0xfb, 0xb6, 0x49,
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0xa8, 0x57, 0x1a, 0xe5, 0x7c, 0x83, 0xce, 0x31,
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0x38, 0xc7, 0x8a, 0x75, 0xec, 0x13, 0x5e, 0xa1,
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0xe0, 0x1f, 0x52, 0xad, 0x34, 0xcb, 0x86, 0x79,
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0x70, 0x8f, 0xc2, 0x3d, 0xa4, 0x5b, 0x16, 0xe9,
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0x08, 0xf7, 0xba, 0x45, 0xdc, 0x23, 0x6e, 0x91,
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0x98, 0x67, 0x2a, 0xd5, 0x4c, 0xb3, 0xfe, 0x01
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};
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#define AVEC_NOT 0x01
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#define AVEC_D 0x02
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#define AVEC_S 0x04
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#define AVEC_P 0x08
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#define AVEC_DS 0x10
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#define AVEC_DP 0x20
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#define AVEC_SP 0x40
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#define AVEC_DSP 0x80
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#define AVEC_NEED_SOURCE (AVEC_S | AVEC_DS | AVEC_SP | AVEC_DSP)
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#define AVEC_NEED_PATTERN (AVEC_P | AVEC_DP | AVEC_SP | AVEC_DSP)
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#define AVEC_NEED_DEST (AVEC_D | AVEC_DS | AVEC_DP | AVEC_DSP)
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#endif // DBG
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/******************************Public*Table********************************\
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* BYTE gajLeftMask[] and BYTE gajRightMask[]
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*
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* Edge tables for vXferScreenTo1bpp.
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\**************************************************************************/
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BYTE gajLeftMask[] = { 0xff, 0x7f, 0x3f, 0x1f, 0x0f, 0x07, 0x03, 0x01 };
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BYTE gajRightMask[] = { 0xff, 0x80, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe };
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/******************************Public*Routine******************************\
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* BOOL bIntersect
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*
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* If 'prcl1' and 'prcl2' intersect, has a return value of TRUE and returns
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* the intersection in 'prclResult'. If they don't intersect, has a return
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* value of FALSE, and 'prclResult' is undefined.
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*
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\**************************************************************************/
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BOOL bIntersect(
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RECTL* prcl1,
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RECTL* prcl2,
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RECTL* prclResult)
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{
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prclResult->left = max(prcl1->left, prcl2->left);
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prclResult->right = min(prcl1->right, prcl2->right);
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if (prclResult->left < prclResult->right)
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{
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prclResult->top = max(prcl1->top, prcl2->top);
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prclResult->bottom = min(prcl1->bottom, prcl2->bottom);
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if (prclResult->top < prclResult->bottom)
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{
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return(TRUE);
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}
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}
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return(FALSE);
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}
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/******************************Public*Routine******************************\
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* LONG cIntersect
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*
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* This routine takes a list of rectangles from 'prclIn' and clips them
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* in-place to the rectangle 'prclClip'. The input rectangles don't
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* have to intersect 'prclClip'; the return value will reflect the
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* number of input rectangles that did intersect, and the intersecting
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* rectangles will be densely packed.
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*
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\**************************************************************************/
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LONG cIntersect(
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RECTL* prclClip,
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RECTL* prclIn, // List of rectangles
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LONG c) // Can be zero
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{
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LONG cIntersections;
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RECTL* prclOut;
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cIntersections = 0;
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prclOut = prclIn;
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for (; c != 0; prclIn++, c--)
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{
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prclOut->left = max(prclIn->left, prclClip->left);
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prclOut->right = min(prclIn->right, prclClip->right);
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if (prclOut->left < prclOut->right)
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{
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prclOut->top = max(prclIn->top, prclClip->top);
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prclOut->bottom = min(prclIn->bottom, prclClip->bottom);
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if (prclOut->top < prclOut->bottom)
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{
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prclOut++;
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cIntersections++;
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}
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}
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}
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return(cIntersections);
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}
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/******************************Public*Routine******************************\
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* VOID vXferScreenTo1bpp
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*
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* Performs a SRCCOPY transfer from the screen (when it's 8bpp) to a 1bpp
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* bitmap.
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*
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\**************************************************************************/
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#if defined(i386)
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VOID vXferScreenTo1bpp( // Type FNXFER
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PDEV* ppdev,
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LONG c, // Count of rectangles, can't be zero
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RECTL* prcl, // List of destination rectangles, in relative
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// coordinates
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ULONG ulHwMix, // Not used
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SURFOBJ* psoDst, // Destination surface
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POINTL* pptlSrc, // Original unclipped source point
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RECTL* prclDst, // Original unclipped destination rectangle
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XLATEOBJ* pxlo) // Provides colour-compressions information
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{
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LONG cjPel;
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VOID* pfnCompute;
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SURFOBJ soTmp;
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ULONG* pulXlate;
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ULONG ulForeColor;
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POINTL ptlSrc;
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RECTL rclTmp;
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BYTE* pjDst;
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BYTE jLeftMask;
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BYTE jRightMask;
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BYTE jNotLeftMask;
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BYTE jNotRightMask;
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LONG cjMiddle;
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LONG lDstDelta;
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LONG lSrcDelta;
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LONG cyTmpScans;
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LONG cyThis;
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LONG cyToGo;
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ASSERTDD(c > 0, "Can't handle zero rectangles");
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ASSERTDD(psoDst->iBitmapFormat == BMF_1BPP, "Only 1bpp destinations");
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ASSERTDD(TMP_BUFFER_SIZE >= (ppdev->cxMemory * ppdev->cjPel),
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"Temp buffer has to be larger than widest possible scan");
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// When the destination is a 1bpp bitmap, the foreground colour
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// maps to '1', and any other colour maps to '0'.
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if (ppdev->iBitmapFormat == BMF_8BPP)
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{
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// When the source is 8bpp or less, we find the forground colour
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// by searching the translate table for the only '1':
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pulXlate = pxlo->pulXlate;
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while (*pulXlate != 1)
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pulXlate++;
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ulForeColor = pulXlate - pxlo->pulXlate;
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}
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else
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{
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ASSERTDD((ppdev->iBitmapFormat == BMF_16BPP) ||
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(ppdev->iBitmapFormat == BMF_32BPP),
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"This routine only supports 8, 16 or 32bpp");
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// When the source has a depth greater than 8bpp, the foreground
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// colour will be the first entry in the translate table we get
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// from calling 'piVector':
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pulXlate = XLATEOBJ_piVector(pxlo);
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ulForeColor = 0;
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if (pulXlate != NULL) // This check isn't really needed...
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ulForeColor = pulXlate[0];
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}
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// We use the temporary buffer to keep a copy of the source
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// rectangle:
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soTmp.pvScan0 = ppdev->pvTmpBuffer;
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do {
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// ptlSrc points to the upper-left corner of the screen rectangle
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// for the current batch:
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ptlSrc.x = prcl->left + (pptlSrc->x - prclDst->left);
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ptlSrc.y = prcl->top + (pptlSrc->y - prclDst->top);
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// vGetBits takes absolute coordinates for the source point:
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ptlSrc.x += ppdev->xOffset;
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ptlSrc.y += ppdev->yOffset;
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pjDst = (BYTE*) psoDst->pvScan0 + (prcl->top * psoDst->lDelta)
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+ (prcl->left >> 3);
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cjPel = ppdev->cjPel;
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soTmp.lDelta = (((prcl->right + 7L) & ~7L) - (prcl->left & ~7L))
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* cjPel;
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// Our temporary buffer, into which we read a copy of the source,
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// may be smaller than the source rectangle. In that case, we
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// process the source rectangle in batches.
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//
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// cyTmpScans is the number of scans we can do in each batch.
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// cyToGo is the total number of scans we have to do for this
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// rectangle.
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//
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// We take the buffer size less four so that the right edge case
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// can safely read one dword past the end:
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cyTmpScans = (TMP_BUFFER_SIZE - 4) / soTmp.lDelta;
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cyToGo = prcl->bottom - prcl->top;
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ASSERTDD(cyTmpScans > 0, "Buffer too small for largest possible scan");
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// Initialize variables that don't change within the batch loop:
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rclTmp.top = 0;
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rclTmp.left = prcl->left & 7L;
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rclTmp.right = (prcl->right - prcl->left) + rclTmp.left;
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// Note that we have to be careful with the right mask so that it
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// isn't zero. A right mask of zero would mean that we'd always be
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// touching one byte past the end of the scan (even though we
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// wouldn't actually be modifying that byte), and we must never
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// access memory past the end of the bitmap (because we can access
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// violate if the bitmap end is exactly page-aligned).
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jLeftMask = gajLeftMask[rclTmp.left & 7];
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jRightMask = gajRightMask[rclTmp.right & 7];
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cjMiddle = ((rclTmp.right - 1) >> 3) - (rclTmp.left >> 3) - 1;
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if (cjMiddle < 0)
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{
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// The blt starts and ends in the same byte:
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jLeftMask &= jRightMask;
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jRightMask = 0;
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cjMiddle = 0;
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}
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jNotLeftMask = ~jLeftMask;
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jNotRightMask = ~jRightMask;
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lDstDelta = psoDst->lDelta - cjMiddle - 2;
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// Delta from the end of the destination
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// to the start on the next scan, accounting
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// for 'left' and 'right' bytes
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lSrcDelta = soTmp.lDelta - ((8 * (cjMiddle + 2)) * cjPel);
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// Compute source delta for special cases
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// like when cjMiddle gets bumped up to '0',
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// and to correct aligned cases
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do {
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// This is the loop that breaks the source rectangle into
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// manageable batches.
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cyThis = cyTmpScans;
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cyToGo -= cyThis;
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if (cyToGo < 0)
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cyThis += cyToGo;
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rclTmp.bottom = cyThis;
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vGetBits(ppdev, &soTmp, &rclTmp, &ptlSrc);
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ptlSrc.y += cyThis; // Get ready for next batch loop
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_asm {
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mov eax,ulForeColor ;eax = foreground colour
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;ebx = temporary storage
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;ecx = count of middle dst bytes
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;dl = destination byte accumulator
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;dh = temporary storage
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mov esi,soTmp.pvScan0 ;esi = source pointer
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mov edi,pjDst ;edi = destination pointer
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|
|
; Figure out the appropriate compute routine:
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|
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mov ebx,cjPel
|
|
mov pfnCompute,offset Compute_Destination_Byte_From_8bpp
|
|
dec ebx
|
|
jz short Do_Left_Byte
|
|
mov pfnCompute,offset Compute_Destination_Byte_From_16bpp
|
|
dec ebx
|
|
jz short Do_Left_Byte
|
|
mov pfnCompute,offset Compute_Destination_Byte_From_32bpp
|
|
|
|
Do_Left_Byte:
|
|
call pfnCompute
|
|
and dl,jLeftMask
|
|
mov dh,jNotLeftMask
|
|
and dh,[edi]
|
|
or dh,dl
|
|
mov [edi],dh
|
|
inc edi
|
|
mov ecx,cjMiddle
|
|
dec ecx
|
|
jl short Do_Right_Byte
|
|
|
|
Do_Middle_Bytes:
|
|
call pfnCompute
|
|
mov [edi],dl
|
|
inc edi
|
|
dec ecx
|
|
jge short Do_Middle_Bytes
|
|
|
|
Do_Right_Byte:
|
|
call pfnCompute
|
|
and dl,jRightMask
|
|
mov dh,jNotRightMask
|
|
and dh,[edi]
|
|
or dh,dl
|
|
mov [edi],dh
|
|
inc edi
|
|
|
|
add edi,lDstDelta
|
|
add esi,lSrcDelta
|
|
dec cyThis
|
|
jnz short Do_Left_Byte
|
|
|
|
mov pjDst,edi ;save for next batch
|
|
|
|
jmp All_Done
|
|
|
|
Compute_Destination_Byte_From_8bpp:
|
|
mov bl,[esi]
|
|
sub bl,al
|
|
cmp bl,1
|
|
adc dl,dl ;bit 0
|
|
|
|
mov bl,[esi+1]
|
|
sub bl,al
|
|
cmp bl,1
|
|
adc dl,dl ;bit 1
|
|
|
|
mov bl,[esi+2]
|
|
sub bl,al
|
|
cmp bl,1
|
|
adc dl,dl ;bit 2
|
|
|
|
mov bl,[esi+3]
|
|
sub bl,al
|
|
cmp bl,1
|
|
adc dl,dl ;bit 3
|
|
|
|
mov bl,[esi+4]
|
|
sub bl,al
|
|
cmp bl,1
|
|
adc dl,dl ;bit 4
|
|
|
|
mov bl,[esi+5]
|
|
sub bl,al
|
|
cmp bl,1
|
|
adc dl,dl ;bit 5
|
|
|
|
mov bl,[esi+6]
|
|
sub bl,al
|
|
cmp bl,1
|
|
adc dl,dl ;bit 6
|
|
|
|
mov bl,[esi+7]
|
|
sub bl,al
|
|
cmp bl,1
|
|
adc dl,dl ;bit 7
|
|
|
|
add esi,8 ;advance the source
|
|
ret
|
|
|
|
Compute_Destination_Byte_From_16bpp:
|
|
mov bx,[esi]
|
|
sub bx,ax
|
|
cmp bx,1
|
|
adc dl,dl ;bit 0
|
|
|
|
mov bx,[esi+2]
|
|
sub bx,ax
|
|
cmp bx,1
|
|
adc dl,dl ;bit 1
|
|
|
|
mov bx,[esi+4]
|
|
sub bx,ax
|
|
cmp bx,1
|
|
adc dl,dl ;bit 2
|
|
|
|
mov bx,[esi+6]
|
|
sub bx,ax
|
|
cmp bx,1
|
|
adc dl,dl ;bit 3
|
|
|
|
mov bx,[esi+8]
|
|
sub bx,ax
|
|
cmp bx,1
|
|
adc dl,dl ;bit 4
|
|
|
|
mov bx,[esi+10]
|
|
sub bx,ax
|
|
cmp bx,1
|
|
adc dl,dl ;bit 5
|
|
|
|
mov bx,[esi+12]
|
|
sub bx,ax
|
|
cmp bx,1
|
|
adc dl,dl ;bit 6
|
|
|
|
mov bx,[esi+14]
|
|
sub bx,ax
|
|
cmp bx,1
|
|
adc dl,dl ;bit 7
|
|
|
|
add esi,16 ;advance the source
|
|
ret
|
|
|
|
Compute_Destination_Byte_From_32bpp:
|
|
mov ebx,[esi]
|
|
sub ebx,eax
|
|
cmp ebx,1
|
|
adc dl,dl ;bit 0
|
|
|
|
mov ebx,[esi+4]
|
|
sub ebx,eax
|
|
cmp ebx,1
|
|
adc dl,dl ;bit 1
|
|
|
|
mov ebx,[esi+8]
|
|
sub ebx,eax
|
|
cmp ebx,1
|
|
adc dl,dl ;bit 2
|
|
|
|
mov ebx,[esi+12]
|
|
sub ebx,eax
|
|
cmp ebx,1
|
|
adc dl,dl ;bit 3
|
|
|
|
mov ebx,[esi+16]
|
|
sub ebx,eax
|
|
cmp ebx,1
|
|
adc dl,dl ;bit 4
|
|
|
|
mov ebx,[esi+20]
|
|
sub ebx,eax
|
|
cmp ebx,1
|
|
adc dl,dl ;bit 5
|
|
|
|
mov ebx,[esi+24]
|
|
sub ebx,eax
|
|
cmp ebx,1
|
|
adc dl,dl ;bit 6
|
|
|
|
mov ebx,[esi+28]
|
|
sub ebx,eax
|
|
cmp ebx,1
|
|
adc dl,dl ;bit 7
|
|
|
|
add esi,32 ;advance the source
|
|
ret
|
|
|
|
All_Done:
|
|
}
|
|
} while (cyToGo > 0);
|
|
|
|
prcl++;
|
|
} while (--c != 0);
|
|
}
|
|
|
|
#endif // i386
|
|
|
|
/******************************Public*Routine******************************\
|
|
* BOOL bPuntBlt
|
|
*
|
|
* Has GDI do any drawing operations that we don't specifically handle
|
|
* in the driver.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
BOOL bPuntBlt(
|
|
SURFOBJ* psoDst,
|
|
SURFOBJ* psoSrc,
|
|
SURFOBJ* psoMsk,
|
|
CLIPOBJ* pco,
|
|
XLATEOBJ* pxlo,
|
|
RECTL* prclDst,
|
|
POINTL* pptlSrc,
|
|
POINTL* pptlMsk,
|
|
BRUSHOBJ* pbo,
|
|
POINTL* pptlBrush,
|
|
ROP4 rop4)
|
|
{
|
|
PDEV* ppdev;
|
|
DSURF* pdsurfSrc;
|
|
DSURF* pdsurfDst;
|
|
OH* pohSrc;
|
|
OH* pohDst;
|
|
POINTL ptlSrc;
|
|
|
|
#if DBG
|
|
|
|
{
|
|
//////////////////////////////////////////////////////////////////////
|
|
// Diagnostics
|
|
//
|
|
// Since calling the engine to do any drawing can be rather painful,
|
|
// particularly when the source is an off-screen DFB (since GDI will
|
|
// have to allocate a DIB and call us to make a temporary copy before
|
|
// it can even start drawing), we'll try to avoid it as much as
|
|
// possible.
|
|
//
|
|
// Here we simply spew out information describing the blt whenever
|
|
// this routine gets called (checked builds only, of course):
|
|
|
|
ULONG ulClip;
|
|
PDEV* ppdev;
|
|
ULONG ulAvec;
|
|
|
|
if (psoDst->dhpdev != NULL)
|
|
ppdev = (PDEV*) psoDst->dhpdev;
|
|
else
|
|
ppdev = (PDEV*) psoSrc->dhpdev;
|
|
|
|
ulClip = (pco == NULL) ? DC_TRIVIAL : pco->iDComplexity;
|
|
|
|
DISPDBG((1, ">> Punt << Dst format: %li Dst type: %li Clip: %li Rop: %lx",
|
|
psoDst->iBitmapFormat, psoDst->iType, ulClip, rop4));
|
|
|
|
if (psoSrc != NULL)
|
|
DISPDBG((1, " << Src format: %li Src type: %li",
|
|
psoSrc->iBitmapFormat, psoSrc->iType));
|
|
|
|
if ((pxlo != NULL) && !(pxlo->flXlate & XO_TRIVIAL) && (psoSrc != NULL))
|
|
{
|
|
if (((psoSrc->dhsurf == NULL) &&
|
|
(psoSrc->iBitmapFormat != ppdev->iBitmapFormat)) ||
|
|
((psoDst->dhsurf == NULL) &&
|
|
(psoDst->iBitmapFormat != ppdev->iBitmapFormat)))
|
|
{
|
|
// Don't bother printing the 'xlate' message when the source
|
|
// is a different bitmap format from the destination -- in
|
|
// those cases we know there always has to be a translate.
|
|
}
|
|
else
|
|
{
|
|
DISPDBG((1, " << With xlate"));
|
|
}
|
|
}
|
|
|
|
// The high 2 bytes of rop4 is not guaranteed to be zero. So in order
|
|
// to get the low 8 bits as index, we have to &ffff before do >>
|
|
ulAvec = gajRop3[rop4 & 0xff] | gajRop3[(rop4 & 0xffff) >> 8];
|
|
|
|
if ((ulAvec & AVEC_NEED_PATTERN) && (pbo->iSolidColor == -1))
|
|
{
|
|
if (pbo->pvRbrush == NULL)
|
|
DISPDBG((1, " << With brush -- Not created"));
|
|
else
|
|
DISPDBG((1, " << With brush -- Created Ok"));
|
|
}
|
|
}
|
|
#endif
|
|
|
|
if (psoDst->dhsurf != NULL)
|
|
{
|
|
ppdev = (PDEV*) psoDst->dhpdev;
|
|
pdsurfDst = (DSURF*) psoDst->dhsurf;
|
|
psoDst = ppdev->psoPunt;
|
|
psoDst->pvScan0 = pdsurfDst->poh->pvScan0;
|
|
|
|
if (psoSrc != NULL)
|
|
{
|
|
pdsurfSrc = (DSURF*) psoSrc->dhsurf;
|
|
if ((pdsurfSrc != NULL) &&
|
|
(pdsurfSrc != pdsurfDst))
|
|
{
|
|
// If we're doing a BitBlt between different off-screen
|
|
// surfaces, we have to be sure to give GDI different
|
|
// surfaces, otherwise it may get confused when it has
|
|
// to do screen-to-screen blts with a translate...
|
|
|
|
pohSrc = pdsurfSrc->poh;
|
|
pohDst = pdsurfDst->poh;
|
|
|
|
psoSrc = ppdev->psoPunt2;
|
|
psoSrc->pvScan0 = pohSrc->pvScan0;
|
|
|
|
// Undo the source pointer adjustment we did earlier:
|
|
|
|
ptlSrc.x = pptlSrc->x + (pohDst->x - pohSrc->x);
|
|
ptlSrc.y = pptlSrc->y + (pohDst->y - pohSrc->y);
|
|
pptlSrc = &ptlSrc;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
ppdev = (PDEV*) psoSrc->dhpdev;
|
|
pdsurfSrc = (DSURF*) psoSrc->dhsurf;
|
|
psoSrc = ppdev->psoPunt;
|
|
psoSrc->pvScan0 = pdsurfSrc->poh->pvScan0;
|
|
}
|
|
|
|
return(EngBitBlt(psoDst, psoSrc, psoMsk, pco, pxlo, prclDst, pptlSrc,
|
|
pptlMsk, pbo, pptlBrush, rop4));
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* BOOL DrvBitBlt
|
|
*
|
|
* Implements the workhorse routine of a display driver.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
BOOL DrvBitBlt(
|
|
SURFOBJ* psoDst,
|
|
SURFOBJ* psoSrc,
|
|
SURFOBJ* psoMsk,
|
|
CLIPOBJ* pco,
|
|
XLATEOBJ* pxlo,
|
|
RECTL* prclDst,
|
|
POINTL* pptlSrc,
|
|
POINTL* pptlMsk,
|
|
BRUSHOBJ* pbo,
|
|
POINTL* pptlBrush,
|
|
ROP4 rop4)
|
|
{
|
|
PDEV* ppdev;
|
|
DSURF* pdsurfDst;
|
|
DSURF* pdsurfSrc;
|
|
POINTL ptlSrc;
|
|
BYTE jClip;
|
|
OH* poh;
|
|
BOOL bMore;
|
|
CLIPENUM ce;
|
|
LONG c;
|
|
RECTL rcl;
|
|
ULONG rop3;
|
|
FNFILL* pfnFill;
|
|
RBRUSH_COLOR rbc; // Realized brush or solid colour
|
|
FNXFER* pfnXfer;
|
|
ULONG iSrcBitmapFormat;
|
|
ULONG iDir;
|
|
|
|
jClip = (pco == NULL) ? DC_TRIVIAL : pco->iDComplexity;
|
|
|
|
pdsurfDst = (DSURF*) psoDst->dhsurf; // May be NULL
|
|
|
|
if (psoSrc == NULL)
|
|
{
|
|
///////////////////////////////////////////////////////////////////
|
|
// Fills
|
|
///////////////////////////////////////////////////////////////////
|
|
|
|
// Fills are this function's "raison d'etre" (which is French
|
|
// for "purple armadillo"), so we handle them as quickly as
|
|
// possible:
|
|
|
|
ASSERTDD(pdsurfDst != NULL,
|
|
"Expect only device destinations when no source");
|
|
|
|
if (pdsurfDst->dt == DT_SCREEN)
|
|
{
|
|
ppdev = (PDEV*) psoDst->dhpdev;
|
|
|
|
poh = pdsurfDst->poh;
|
|
ppdev->xOffset = poh->x;
|
|
ppdev->yOffset = poh->y;
|
|
|
|
// Make sure it doesn't involve a mask (i.e., it's really a
|
|
// Rop3):
|
|
|
|
if (((rop4 >> 8) & 0xff) == (rop4 & 0xff))
|
|
{
|
|
// Since 'psoSrc' is NULL, the rop3 had better not indicate
|
|
// that we need a source.
|
|
|
|
ASSERTDD((((rop4 >> 2) ^ (rop4)) & 0x33) == 0,
|
|
"Need source but GDI gave us a NULL 'psoSrc'");
|
|
|
|
Fill_It:
|
|
|
|
pfnFill = ppdev->pfnFillSolid;
|
|
if (gabRopNeedsPattern[(rop4 >> 2) & 0xf])
|
|
{
|
|
rbc.iSolidColor = pbo->iSolidColor;
|
|
if (rbc.iSolidColor == -1)
|
|
{
|
|
// Try and realize the pattern brush; by doing
|
|
// this call-back, GDI will eventually call us
|
|
// again through DrvRealizeBrush:
|
|
|
|
rbc.prb = pbo->pvRbrush;
|
|
if (rbc.prb == NULL)
|
|
{
|
|
rbc.prb = BRUSHOBJ_pvGetRbrush(pbo);
|
|
if (rbc.prb == NULL)
|
|
{
|
|
// If we couldn't realize the brush, punt
|
|
// the call (it may have been a non 8x8
|
|
// brush or something, which we can't be
|
|
// bothered to handle, so let GDI do the
|
|
// drawing):
|
|
|
|
goto Punt_It;
|
|
}
|
|
}
|
|
pfnFill = ppdev->pfnFillPat;
|
|
}
|
|
}
|
|
|
|
// Note that these 2 'if's are more efficient than
|
|
// a switch statement:
|
|
|
|
if (jClip == DC_TRIVIAL)
|
|
{
|
|
pfnFill(ppdev, 1, prclDst, rop4, rbc, pptlBrush);
|
|
goto All_Done;
|
|
}
|
|
else if (jClip == DC_RECT)
|
|
{
|
|
if (bIntersect(prclDst, &pco->rclBounds, &rcl))
|
|
pfnFill(ppdev, 1, &rcl, rop4, rbc, pptlBrush);
|
|
goto All_Done;
|
|
}
|
|
else
|
|
{
|
|
CLIPOBJ_cEnumStart(pco, FALSE, CT_RECTANGLES, CD_ANY, 0);
|
|
|
|
do {
|
|
bMore = CLIPOBJ_bEnum(pco, sizeof(ce), (ULONG*) &ce);
|
|
|
|
c = cIntersect(prclDst, ce.arcl, ce.c);
|
|
|
|
if (c != 0)
|
|
pfnFill(ppdev, c, ce.arcl, rop4, rbc, pptlBrush);
|
|
|
|
} while (bMore);
|
|
goto All_Done;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if ((psoSrc != NULL) && (psoSrc->dhsurf != NULL))
|
|
{
|
|
pdsurfSrc = (DSURF*) psoSrc->dhsurf;
|
|
if (pdsurfSrc->dt == DT_DIB)
|
|
{
|
|
// Here we consider putting a DIB DFB back into off-screen
|
|
// memory. If there's a translate, it's probably not worth
|
|
// moving since we won't be able to use the hardware to do
|
|
// the blt (a similar argument could be made for weird rops
|
|
// and stuff that we'll only end up having GDI simulate, but
|
|
// those should happen infrequently enough that I don't care).
|
|
|
|
if ((pxlo == NULL) || (pxlo->flXlate & XO_TRIVIAL))
|
|
{
|
|
ppdev = (PDEV*) psoSrc->dhpdev;
|
|
|
|
// See 'DrvCopyBits' for some more comments on how this
|
|
// moving-it-back-into-off-screen-memory thing works:
|
|
|
|
if (pdsurfSrc->iUniq == ppdev->iHeapUniq)
|
|
{
|
|
if (--pdsurfSrc->cBlt == 0)
|
|
{
|
|
if (bMoveDibToOffscreenDfbIfRoom(ppdev, pdsurfSrc))
|
|
goto Continue_It;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Some space was freed up in off-screen memory,
|
|
// so reset the counter for this DFB:
|
|
|
|
pdsurfSrc->iUniq = ppdev->iHeapUniq;
|
|
pdsurfSrc->cBlt = HEAP_COUNT_DOWN;
|
|
}
|
|
}
|
|
|
|
psoSrc = pdsurfSrc->pso;
|
|
|
|
// Handle the case where the source is a DIB DFB and the
|
|
// destination is a regular bitmap:
|
|
|
|
if (psoDst->dhsurf == NULL)
|
|
goto EngBitBlt_It;
|
|
|
|
}
|
|
}
|
|
|
|
Continue_It:
|
|
|
|
if (pdsurfDst != NULL)
|
|
{
|
|
if (pdsurfDst->dt == DT_DIB)
|
|
{
|
|
psoDst = pdsurfDst->pso;
|
|
|
|
// If the destination is a DIB, we can only handle this
|
|
// call if the source is not a DIB:
|
|
|
|
if ((psoSrc == NULL) || (psoSrc->dhsurf == NULL))
|
|
goto EngBitBlt_It;
|
|
}
|
|
}
|
|
|
|
// At this point, we know that either the source or the destination is
|
|
// not a DIB. Check for a DFB to screen, DFB to DFB, or screen to DFB
|
|
// case:
|
|
|
|
if ((psoSrc != NULL) &&
|
|
(psoDst->dhsurf != NULL) &&
|
|
(psoSrc->dhsurf != NULL))
|
|
{
|
|
pdsurfSrc = (DSURF*) psoSrc->dhsurf;
|
|
pdsurfDst = (DSURF*) psoDst->dhsurf;
|
|
|
|
ASSERTDD(pdsurfSrc->dt == DT_SCREEN, "Expected screen source");
|
|
ASSERTDD(pdsurfDst->dt == DT_SCREEN, "Expected screen destination");
|
|
|
|
ptlSrc.x = pptlSrc->x - (pdsurfDst->poh->x - pdsurfSrc->poh->x);
|
|
ptlSrc.y = pptlSrc->y - (pdsurfDst->poh->y - pdsurfSrc->poh->y);
|
|
|
|
pptlSrc = &ptlSrc;
|
|
}
|
|
|
|
if (psoDst->dhsurf != NULL)
|
|
{
|
|
pdsurfDst = (DSURF*) psoDst->dhsurf;
|
|
ppdev = (PDEV*) psoDst->dhpdev;
|
|
|
|
ppdev->xOffset = pdsurfDst->poh->x;
|
|
ppdev->yOffset = pdsurfDst->poh->y;
|
|
}
|
|
else
|
|
{
|
|
pdsurfSrc = (DSURF*) psoSrc->dhsurf;
|
|
ppdev = (PDEV*) psoSrc->dhpdev;
|
|
|
|
ppdev->xOffset = pdsurfSrc->poh->x;
|
|
ppdev->yOffset = pdsurfSrc->poh->y;
|
|
}
|
|
|
|
// We bail here if we're running in a high-colour mode on the P9000:
|
|
|
|
if (ppdev->flStat & STAT_UNACCELERATED)
|
|
goto EngBitBlt_It;
|
|
|
|
if (((rop4 >> 8) & 0xff) == (rop4 & 0xff))
|
|
{
|
|
// Since we've already handled the cases where the ROP4 is really
|
|
// a ROP3 and no source is required, we can assert...
|
|
|
|
ASSERTDD((psoSrc != NULL) && (pptlSrc != NULL),
|
|
"Expected no-source case to already have been handled");
|
|
|
|
///////////////////////////////////////////////////////////////////
|
|
// Bitmap transfers
|
|
///////////////////////////////////////////////////////////////////
|
|
|
|
// Since the foreground and background ROPs are the same, we
|
|
// don't have to worry about no stinking masks (it's a simple
|
|
// Rop3).
|
|
|
|
rop3 = (rop4 & 0xff); // Make it into a Rop3 (we keep the rop4
|
|
// around in case we decide to punt)
|
|
|
|
if (psoDst->dhsurf != NULL)
|
|
{
|
|
// The destination is the screen:
|
|
|
|
if ((rop3 >> 4) == (rop3 & 0xf))
|
|
{
|
|
// The ROP3 doesn't require a pattern:
|
|
|
|
if (psoSrc->dhsurf == NULL)
|
|
{
|
|
//////////////////////////////////////////////////
|
|
// DIB-to-screen blt
|
|
|
|
// This section handles 1bpp, 4bpp and 8bpp sources.
|
|
|
|
iSrcBitmapFormat = psoSrc->iBitmapFormat;
|
|
if (iSrcBitmapFormat == BMF_1BPP)
|
|
{
|
|
pfnXfer = ppdev->pfnXfer1bpp;
|
|
goto Xfer_It;
|
|
}
|
|
else if ((iSrcBitmapFormat == ppdev->iBitmapFormat) &&
|
|
((pxlo == NULL) || (pxlo->flXlate & XO_TRIVIAL)))
|
|
{
|
|
pfnXfer = ppdev->pfnXferNative;
|
|
goto Xfer_It;
|
|
}
|
|
else if ((iSrcBitmapFormat == BMF_4BPP) &&
|
|
(ppdev->iBitmapFormat == BMF_8BPP))
|
|
{
|
|
pfnXfer = ppdev->pfnXfer4bpp;
|
|
goto Xfer_It;
|
|
}
|
|
}
|
|
else // psoSrc->dhsurf != NULL
|
|
{
|
|
if ((pxlo == NULL) || (pxlo->flXlate & XO_TRIVIAL))
|
|
{
|
|
//////////////////////////////////////////////////
|
|
// Screen-to-screen blt with no translate
|
|
|
|
if (jClip == DC_TRIVIAL)
|
|
{
|
|
(ppdev->pfnCopyBlt)(ppdev, 1, prclDst, rop4,
|
|
pptlSrc, prclDst);
|
|
goto All_Done;
|
|
}
|
|
else if (jClip == DC_RECT)
|
|
{
|
|
if (bIntersect(prclDst, &pco->rclBounds, &rcl))
|
|
{
|
|
(ppdev->pfnCopyBlt)(ppdev, 1, &rcl, rop4,
|
|
pptlSrc, prclDst);
|
|
}
|
|
goto All_Done;
|
|
}
|
|
else
|
|
{
|
|
// Don't forget that we'll have to draw the
|
|
// rectangles in the correct direction:
|
|
|
|
if (pptlSrc->y >= prclDst->top)
|
|
{
|
|
if (pptlSrc->x >= prclDst->left)
|
|
iDir = CD_RIGHTDOWN;
|
|
else
|
|
iDir = CD_LEFTDOWN;
|
|
}
|
|
else
|
|
{
|
|
if (pptlSrc->x >= prclDst->left)
|
|
iDir = CD_RIGHTUP;
|
|
else
|
|
iDir = CD_LEFTUP;
|
|
}
|
|
|
|
CLIPOBJ_cEnumStart(pco, FALSE, CT_RECTANGLES,
|
|
iDir, 0);
|
|
|
|
do {
|
|
bMore = CLIPOBJ_bEnum(pco, sizeof(ce),
|
|
(ULONG*) &ce);
|
|
|
|
c = cIntersect(prclDst, ce.arcl, ce.c);
|
|
|
|
if (c != 0)
|
|
{
|
|
(ppdev->pfnCopyBlt)(ppdev, c, ce.arcl,
|
|
rop4, pptlSrc, prclDst);
|
|
}
|
|
|
|
} while (bMore);
|
|
goto All_Done;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
#if defined(i386)
|
|
{
|
|
// We special case screen to monochrome blts because they
|
|
// happen fairly often. We only handle SRCCOPY rops and
|
|
// monochrome destinations (to handle a true 1bpp DIB
|
|
// destination, we would have to do near-colour searches
|
|
// on every colour; as it is, the foreground colour gets
|
|
// mapped to '1', and everything else gets mapped to '0'):
|
|
|
|
if ((psoDst->iBitmapFormat == BMF_1BPP) &&
|
|
(rop3 == 0xcc) &&
|
|
(pxlo->flXlate & XO_TO_MONO) &&
|
|
(ppdev->iBitmapFormat != BMF_24BPP))
|
|
{
|
|
pfnXfer = vXferScreenTo1bpp;
|
|
psoSrc = psoDst; // A misnomer, I admit
|
|
goto Xfer_It;
|
|
}
|
|
}
|
|
#endif // i386
|
|
}
|
|
}
|
|
else if ((psoMsk == NULL) && (rop4 == 0xaacc))
|
|
{
|
|
// The only time GDI will ask us to do a true rop4 using the brush
|
|
// mask is when the brush is 1bpp, and the background rop is AA
|
|
// (meaning it's a NOP):
|
|
|
|
goto Fill_It;
|
|
}
|
|
|
|
// Just fall through to Punt_It...
|
|
|
|
Punt_It:
|
|
|
|
return(bPuntBlt(psoDst,
|
|
psoSrc,
|
|
psoMsk,
|
|
pco,
|
|
pxlo,
|
|
prclDst,
|
|
pptlSrc,
|
|
pptlMsk,
|
|
pbo,
|
|
pptlBrush,
|
|
rop4));
|
|
|
|
//////////////////////////////////////////////////////////////////////
|
|
// Common bitmap transfer
|
|
|
|
Xfer_It:
|
|
if (jClip == DC_TRIVIAL)
|
|
{
|
|
pfnXfer(ppdev, 1, prclDst, rop4, psoSrc, pptlSrc, prclDst, pxlo);
|
|
goto All_Done;
|
|
}
|
|
else if (jClip == DC_RECT)
|
|
{
|
|
if (bIntersect(prclDst, &pco->rclBounds, &rcl))
|
|
pfnXfer(ppdev, 1, &rcl, rop4, psoSrc, pptlSrc, prclDst, pxlo);
|
|
goto All_Done;
|
|
}
|
|
else
|
|
{
|
|
CLIPOBJ_cEnumStart(pco, FALSE, CT_RECTANGLES,
|
|
CD_ANY, 0);
|
|
|
|
do {
|
|
bMore = CLIPOBJ_bEnum(pco, sizeof(ce),
|
|
(ULONG*) &ce);
|
|
|
|
c = cIntersect(prclDst, ce.arcl, ce.c);
|
|
|
|
if (c != 0)
|
|
{
|
|
pfnXfer(ppdev, c, ce.arcl, rop4, psoSrc,
|
|
pptlSrc, prclDst, pxlo);
|
|
}
|
|
|
|
} while (bMore);
|
|
goto All_Done;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////
|
|
// Common DIB blt
|
|
|
|
EngBitBlt_It:
|
|
|
|
// Our driver doesn't handle any blt's between two DIBs. Normally
|
|
// a driver doesn't have to worry about this, but we do because
|
|
// we have DFBs that may get moved from off-screen memory to a DIB,
|
|
// where we have GDI do all the drawing. GDI does DIB drawing at
|
|
// a reasonable speed (unless one of the surfaces is a device-
|
|
// managed surface...)
|
|
//
|
|
// If either the source or destination surface in an EngBitBlt
|
|
// call-back is a device-managed surface (meaning it's not a DIB
|
|
// that GDI can draw with), GDI will automatically allocate memory
|
|
// and call the driver's DrvCopyBits routine to create a DIB copy
|
|
// that it can use. So this means that this could handle all 'punts',
|
|
// and we could conceivably get rid of bPuntBlt. But this would have
|
|
// a bad performance impact because of the extra memory allocations
|
|
// and bitmap copies -- you really don't want to do this unless you
|
|
// have to (or your surface was created such that GDI can draw
|
|
// directly onto it) -- I've been burned by this because it's not
|
|
// obvious that the performance impact is so bad.
|
|
//
|
|
// That being said, we only call EngBitBlt when all the surfaces
|
|
// are DIBs:
|
|
|
|
return(EngBitBlt(psoDst, psoSrc, psoMsk, pco, pxlo, prclDst,
|
|
pptlSrc, pptlMsk, pbo, pptlBrush, rop4));
|
|
|
|
All_Done:
|
|
return(TRUE);
|
|
|
|
}
|
|
|
|
/******************************Public*Routine******************************\
|
|
* BOOL DrvCopyBits
|
|
*
|
|
* Do fast bitmap copies.
|
|
*
|
|
* Note that GDI will (usually) automatically adjust the blt extents to
|
|
* adjust for any rectangular clipping, so we'll rarely see DC_RECT
|
|
* clipping in this routine (and as such, we don't bother special casing
|
|
* it).
|
|
*
|
|
* I'm not sure if the performance benefit from this routine is actually
|
|
* worth the increase in code size, since SRCCOPY BitBlts are hardly the
|
|
* most common drawing operation we'll get. But what the heck.
|
|
*
|
|
\**************************************************************************/
|
|
|
|
BOOL DrvCopyBits(
|
|
SURFOBJ* psoDst,
|
|
SURFOBJ* psoSrc,
|
|
CLIPOBJ* pco,
|
|
XLATEOBJ* pxlo,
|
|
RECTL* prclDst,
|
|
POINTL* pptlSrc)
|
|
{
|
|
PDEV* ppdev;
|
|
DSURF* pdsurfSrc;
|
|
DSURF* pdsurfDst;
|
|
POINTL ptl;
|
|
OH* pohSrc;
|
|
OH* pohDst;
|
|
|
|
// DrvCopyBits is a fast-path for SRCCOPY blts. But it can still be
|
|
// pretty complicated: there can be translates, clipping, RLEs,
|
|
// bitmaps that aren't the same format as the screen, plus
|
|
// screen-to-screen, DIB-to-screen or screen-to-DIB operations,
|
|
// not to mention DFBs (device format bitmaps).
|
|
//
|
|
// Rather than making this routine almost as big as DrvBitBlt, I'll
|
|
// handle here only the speed-critical cases, and punt the rest to
|
|
// our DrvBitBlt routine.
|
|
//
|
|
// We'll try to handle anything that doesn't involve clipping:
|
|
|
|
if (((pco == NULL) || (pco->iDComplexity == DC_TRIVIAL)) &&
|
|
((pxlo == NULL) || (pxlo->flXlate & XO_TRIVIAL)))
|
|
{
|
|
if (psoDst->dhsurf != NULL)
|
|
{
|
|
// We know the destination is either a DFB or the screen:
|
|
|
|
ppdev = (PDEV*) psoDst->dhpdev;
|
|
pdsurfDst = (DSURF*) psoDst->dhsurf;
|
|
|
|
// See if the source is a plain DIB:
|
|
|
|
if (psoSrc->dhsurf != NULL)
|
|
{
|
|
pdsurfSrc = (DSURF*) psoSrc->dhsurf;
|
|
|
|
// Make sure the destination is really the screen or an
|
|
// off-screen DFB (i.e., not a DFB that we've converted
|
|
// to a DIB):
|
|
|
|
if (pdsurfDst->dt == DT_SCREEN)
|
|
{
|
|
ASSERTDD(psoSrc->dhsurf != NULL, "Can't be a DIB");
|
|
|
|
if (pdsurfSrc->dt == DT_SCREEN)
|
|
{
|
|
|
|
Screen_To_Screen:
|
|
|
|
//////////////////////////////////////////////////////
|
|
// Screen-to-screen
|
|
|
|
ASSERTDD((psoSrc->dhsurf != NULL) &&
|
|
(pdsurfSrc->dt == DT_SCREEN) &&
|
|
(psoDst->dhsurf != NULL) &&
|
|
(pdsurfDst->dt == DT_SCREEN),
|
|
"Should be a screen-to-screen case");
|
|
|
|
// pfnCopyBlt takes relative coordinates (relative
|
|
// to the destination surface, that is), so we have
|
|
// to change the start point to be relative to the
|
|
// destination surface too:
|
|
|
|
pohSrc = pdsurfSrc->poh;
|
|
pohDst = pdsurfDst->poh;
|
|
|
|
ptl.x = pptlSrc->x - (pohDst->x - pohSrc->x);
|
|
ptl.y = pptlSrc->y - (pohDst->y - pohSrc->y);
|
|
|
|
ppdev->xOffset = pohDst->x;
|
|
ppdev->yOffset = pohDst->y;
|
|
|
|
(ppdev->pfnCopyBlt)(ppdev, 1, prclDst, 0xCCCC, &ptl,
|
|
prclDst);
|
|
return(TRUE);
|
|
}
|
|
else // (pdsurfSrc->dt != DT_SCREEN)
|
|
{
|
|
// Ah ha, the source is a DFB that's really a DIB.
|
|
|
|
ASSERTDD(psoDst->dhsurf != NULL,
|
|
"Destination can't be a DIB here");
|
|
|
|
/////////////////////////////////////////////////////
|
|
// Put It Back Into Off-screen?
|
|
//
|
|
// We take this opportunity to decide if we want to
|
|
// put the DIB back into off-screen memory. This is
|
|
// a pretty good place to do it because we have to
|
|
// copy the bits to some portion of the screen,
|
|
// anyway. So we would incur only an extra screen-to-
|
|
// screen blt at this time, much of which will be
|
|
// over-lapped with the CPU.
|
|
//
|
|
// The simple approach we have taken is to move a DIB
|
|
// back into off-screen memory only if there's already
|
|
// room -- we won't throw stuff out to make space
|
|
// (because it's tough to know what ones to throw out,
|
|
// and it's easy to get into thrashing scenarios).
|
|
//
|
|
// Because it takes some time to see if there's room
|
|
// in off-screen memory, we only check one in
|
|
// HEAP_COUNT_DOWN times if there's room. To bias
|
|
// in favour of bitmaps that are often blt, the
|
|
// counters are reset every time any space is freed
|
|
// up in off-screen memory. We also don't bother
|
|
// checking if no space has been freed since the
|
|
// last time we checked for this DIB.
|
|
|
|
if (pdsurfSrc->iUniq == ppdev->iHeapUniq)
|
|
{
|
|
if (--pdsurfSrc->cBlt == 0)
|
|
{
|
|
if (bMoveDibToOffscreenDfbIfRoom(ppdev,
|
|
pdsurfSrc))
|
|
goto Screen_To_Screen;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Some space was freed up in off-screen memory,
|
|
// so reset the counter for this DFB:
|
|
|
|
pdsurfSrc->iUniq = ppdev->iHeapUniq;
|
|
pdsurfSrc->cBlt = HEAP_COUNT_DOWN;
|
|
}
|
|
|
|
// Since the destination is definitely the screen,
|
|
// we don't have to worry about creating a DIB to
|
|
// DIB copy case (for which we would have to call
|
|
// EngCopyBits):
|
|
|
|
psoSrc = pdsurfSrc->pso;
|
|
|
|
goto DIB_To_Screen;
|
|
}
|
|
}
|
|
else // (pdsurfDst->dt != DT_SCREEN)
|
|
{
|
|
// Because the source is not a DIB, we don't have to
|
|
// worry about creating a DIB to DIB case here (although
|
|
// we'll have to check later to see if the source is
|
|
// really a DIB that's masquerading as a DFB...)
|
|
|
|
ASSERTDD(psoSrc->dhsurf != NULL,
|
|
"Source can't be a DIB here");
|
|
|
|
psoDst = pdsurfDst->pso;
|
|
|
|
goto Screen_To_DIB;
|
|
}
|
|
}
|
|
else if (psoSrc->iBitmapFormat == ppdev->iBitmapFormat)
|
|
{
|
|
// Make sure the destination is really the screen:
|
|
|
|
if (pdsurfDst->dt == DT_SCREEN)
|
|
{
|
|
|
|
DIB_To_Screen:
|
|
|
|
//////////////////////////////////////////////////////
|
|
// DIB-to-screen
|
|
|
|
ASSERTDD((psoDst->dhsurf != NULL) &&
|
|
(pdsurfDst->dt == DT_SCREEN) &&
|
|
(psoSrc->dhsurf == NULL) &&
|
|
(psoSrc->iBitmapFormat == ppdev->iBitmapFormat),
|
|
"Should be a DIB-to-screen case");
|
|
|
|
pohDst = pdsurfDst->poh;
|
|
ppdev->xOffset = pohDst->x;
|
|
ppdev->yOffset = pohDst->y;
|
|
|
|
ppdev->pfnXferNative(ppdev, 1, prclDst, 0xCCCC, psoSrc,
|
|
pptlSrc, prclDst, NULL);
|
|
return(TRUE);
|
|
}
|
|
}
|
|
}
|
|
else // (psoDst->dhsurf == NULL)
|
|
{
|
|
|
|
Screen_To_DIB:
|
|
|
|
pdsurfSrc = (DSURF*) psoSrc->dhsurf;
|
|
ppdev = (PDEV*) psoSrc->dhpdev;
|
|
|
|
if (psoDst->iBitmapFormat == ppdev->iBitmapFormat)
|
|
{
|
|
if (pdsurfSrc->dt == DT_SCREEN)
|
|
{
|
|
//////////////////////////////////////////////////////
|
|
// Screen-to-DIB
|
|
|
|
ASSERTDD((psoSrc->dhsurf != NULL) &&
|
|
(pdsurfSrc->dt == DT_SCREEN) &&
|
|
(psoDst->dhsurf == NULL) &&
|
|
(psoDst->iBitmapFormat == ppdev->iBitmapFormat),
|
|
"Should be a screen-to-DIB case");
|
|
|
|
// vGetBits takes absolute screen coordinates, so we have
|
|
// to muck with the source point:
|
|
|
|
pohSrc = pdsurfSrc->poh;
|
|
|
|
ptl.x = pptlSrc->x + pohSrc->x;
|
|
ptl.y = pptlSrc->y + pohSrc->y;
|
|
|
|
vGetBits(ppdev, psoDst, prclDst, &ptl);
|
|
return(TRUE);
|
|
}
|
|
else
|
|
{
|
|
// The source is a DFB that's really a DIB. Since we
|
|
// know that the destination is a DIB, we've got a DIB
|
|
// to DIB operation, and should call EngCopyBits:
|
|
|
|
psoSrc = pdsurfSrc->pso;
|
|
goto EngCopyBits_It;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// We can't call DrvBitBlt if we've accidentally converted both
|
|
// surfaces to DIBs, because it isn't equipped to handle it:
|
|
|
|
ASSERTDD((psoSrc->dhsurf != NULL) ||
|
|
(psoDst->dhsurf != NULL),
|
|
"Accidentally converted both surfaces to DIBs");
|
|
|
|
/////////////////////////////////////////////////////////////////
|
|
// A DrvCopyBits is after all just a simplified DrvBitBlt:
|
|
|
|
return(DrvBitBlt(psoDst, psoSrc, NULL, pco, pxlo, prclDst, pptlSrc, NULL,
|
|
NULL, NULL, 0x0000CCCC));
|
|
|
|
EngCopyBits_It:
|
|
|
|
ASSERTDD((psoDst->dhsurf == NULL) &&
|
|
(psoSrc->dhsurf == NULL),
|
|
"Both surfaces should be DIBs to call EngCopyBits");
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|
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return(EngCopyBits(psoDst, psoSrc, pco, pxlo, prclDst, pptlSrc));
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}
|