root / hw / cirrus_vga_rop.h @ f6dc18df
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/*
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* QEMU Cirrus CLGD 54xx VGA Emulator.
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*
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* Copyright (c) 2004 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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static void |
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glue(cirrus_bitblt_rop_fwd_, ROP_NAME)(CirrusVGAState *s, |
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uint8_t *dst,const uint8_t *src,
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int dstpitch,int srcpitch, |
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int bltwidth,int bltheight) |
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{ |
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int x,y;
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dstpitch -= bltwidth; |
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srcpitch -= bltwidth; |
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if (dstpitch < 0 || srcpitch < 0) { |
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/* is 0 valid? srcpitch == 0 could be useful */
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return;
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} |
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for (y = 0; y < bltheight; y++) { |
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for (x = 0; x < bltwidth; x++) { |
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ROP_OP(*dst, *src); |
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dst++; |
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src++; |
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} |
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dst += dstpitch; |
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src += srcpitch; |
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} |
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} |
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static void |
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glue(cirrus_bitblt_rop_bkwd_, ROP_NAME)(CirrusVGAState *s, |
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uint8_t *dst,const uint8_t *src,
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int dstpitch,int srcpitch, |
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int bltwidth,int bltheight) |
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{ |
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int x,y;
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dstpitch += bltwidth; |
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srcpitch += bltwidth; |
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for (y = 0; y < bltheight; y++) { |
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for (x = 0; x < bltwidth; x++) { |
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ROP_OP(*dst, *src); |
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dst--; |
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src--; |
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} |
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dst += dstpitch; |
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src += srcpitch; |
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} |
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} |
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static void |
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glue(glue(cirrus_bitblt_rop_fwd_transp_, ROP_NAME),_8)(CirrusVGAState *s, |
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uint8_t *dst,const uint8_t *src,
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int dstpitch,int srcpitch, |
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int bltwidth,int bltheight) |
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{ |
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int x,y;
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uint8_t p; |
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dstpitch -= bltwidth; |
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srcpitch -= bltwidth; |
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for (y = 0; y < bltheight; y++) { |
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for (x = 0; x < bltwidth; x++) { |
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p = *dst; |
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ROP_OP(p, *src); |
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if (p != s->vga.gr[0x34]) *dst = p; |
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dst++; |
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src++; |
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} |
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dst += dstpitch; |
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src += srcpitch; |
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} |
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} |
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static void |
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glue(glue(cirrus_bitblt_rop_bkwd_transp_, ROP_NAME),_8)(CirrusVGAState *s, |
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uint8_t *dst,const uint8_t *src,
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int dstpitch,int srcpitch, |
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int bltwidth,int bltheight) |
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{ |
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int x,y;
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uint8_t p; |
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dstpitch += bltwidth; |
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srcpitch += bltwidth; |
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for (y = 0; y < bltheight; y++) { |
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for (x = 0; x < bltwidth; x++) { |
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p = *dst; |
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ROP_OP(p, *src); |
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if (p != s->vga.gr[0x34]) *dst = p; |
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dst--; |
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src--; |
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} |
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dst += dstpitch; |
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src += srcpitch; |
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} |
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} |
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static void |
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glue(glue(cirrus_bitblt_rop_fwd_transp_, ROP_NAME),_16)(CirrusVGAState *s, |
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uint8_t *dst,const uint8_t *src,
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int dstpitch,int srcpitch, |
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int bltwidth,int bltheight) |
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{ |
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int x,y;
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uint8_t p1, p2; |
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dstpitch -= bltwidth; |
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srcpitch -= bltwidth; |
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for (y = 0; y < bltheight; y++) { |
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for (x = 0; x < bltwidth; x+=2) { |
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p1 = *dst; |
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p2 = *(dst+1);
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ROP_OP(p1, *src); |
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ROP_OP(p2, *(src+1));
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if ((p1 != s->vga.gr[0x34]) || (p2 != s->vga.gr[0x35])) { |
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*dst = p1; |
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*(dst+1) = p2;
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} |
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dst+=2;
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src+=2;
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} |
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dst += dstpitch; |
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src += srcpitch; |
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} |
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} |
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static void |
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glue(glue(cirrus_bitblt_rop_bkwd_transp_, ROP_NAME),_16)(CirrusVGAState *s, |
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uint8_t *dst,const uint8_t *src,
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int dstpitch,int srcpitch, |
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int bltwidth,int bltheight) |
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{ |
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int x,y;
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uint8_t p1, p2; |
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dstpitch += bltwidth; |
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srcpitch += bltwidth; |
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for (y = 0; y < bltheight; y++) { |
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for (x = 0; x < bltwidth; x+=2) { |
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p1 = *(dst-1);
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p2 = *dst; |
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ROP_OP(p1, *(src-1));
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ROP_OP(p2, *src); |
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if ((p1 != s->vga.gr[0x34]) || (p2 != s->vga.gr[0x35])) { |
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*(dst-1) = p1;
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*dst = p2; |
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} |
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dst-=2;
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src-=2;
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} |
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dst += dstpitch; |
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src += srcpitch; |
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} |
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} |
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#define DEPTH 8 |
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#include "cirrus_vga_rop2.h" |
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#define DEPTH 16 |
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#include "cirrus_vga_rop2.h" |
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#define DEPTH 24 |
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#include "cirrus_vga_rop2.h" |
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#define DEPTH 32 |
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#include "cirrus_vga_rop2.h" |
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#undef ROP_NAME
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#undef ROP_OP
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