Archipelago » qemu

/*

 * QEMU Cirrus CLGD 54xx VGA Emulator.

 *

 * Copyright (c) 2004 Fabrice Bellard

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 */

static void

glue(cirrus_bitblt_rop_fwd_, ROP_NAME)(CirrusVGAState *s,

                             uint8_t *dst,const uint8_t *src,

                             int dstpitch,int srcpitch,

                             int bltwidth,int bltheight)

{

    int x,y;

    dstpitch -= bltwidth;

    srcpitch -= bltwidth;

    if (dstpitch < 0 || srcpitch < 0) {

        /* is 0 valid? srcpitch == 0 could be useful */

        return;

    }

    for (y = 0; y < bltheight; y++) {

        for (x = 0; x < bltwidth; x++) {

            ROP_OP(*dst, *src);

            dst++;

            src++;

        }

        dst += dstpitch;

        src += srcpitch;

    }

}

static void

glue(cirrus_bitblt_rop_bkwd_, ROP_NAME)(CirrusVGAState *s,

                                        uint8_t *dst,const uint8_t *src,

                                        int dstpitch,int srcpitch,

                                        int bltwidth,int bltheight)

{

    int x,y;

    dstpitch += bltwidth;

    srcpitch += bltwidth;

    for (y = 0; y < bltheight; y++) {

        for (x = 0; x < bltwidth; x++) {

            ROP_OP(*dst, *src);

            dst--;

            src--;

        }

        dst += dstpitch;

        src += srcpitch;

    }

}

static void

glue(glue(cirrus_bitblt_rop_fwd_transp_, ROP_NAME),_8)(CirrusVGAState *s,

                                                       uint8_t *dst,const uint8_t *src,

                                                       int dstpitch,int srcpitch,

                                                       int bltwidth,int bltheight)

{

    int x,y;

    uint8_t p;

    dstpitch -= bltwidth;

    srcpitch -= bltwidth;

    for (y = 0; y < bltheight; y++) {

        for (x = 0; x < bltwidth; x++) {

            p = *dst;

            ROP_OP(p, *src);

            if (p != s->vga.gr[0x34]) *dst = p;

            dst++;

            src++;

        }

        dst += dstpitch;

        src += srcpitch;

    }

}

static void

glue(glue(cirrus_bitblt_rop_bkwd_transp_, ROP_NAME),_8)(CirrusVGAState *s,

                                                        uint8_t *dst,const uint8_t *src,

                                                        int dstpitch,int srcpitch,

                                                        int bltwidth,int bltheight)

{

    int x,y;

    uint8_t p;

    dstpitch += bltwidth;

    srcpitch += bltwidth;

    for (y = 0; y < bltheight; y++) {

        for (x = 0; x < bltwidth; x++) {

            p = *dst;

            ROP_OP(p, *src);

            if (p != s->vga.gr[0x34]) *dst = p;

            dst--;

            src--;

        }

        dst += dstpitch;

        src += srcpitch;

    }

}

static void

glue(glue(cirrus_bitblt_rop_fwd_transp_, ROP_NAME),_16)(CirrusVGAState *s,

                                                        uint8_t *dst,const uint8_t *src,

                                                        int dstpitch,int srcpitch,

                                                        int bltwidth,int bltheight)

{

    int x,y;

    uint8_t p1, p2;

    dstpitch -= bltwidth;

    srcpitch -= bltwidth;

    for (y = 0; y < bltheight; y++) {

        for (x = 0; x < bltwidth; x+=2) {

            p1 = *dst;

            p2 = *(dst+1);

            ROP_OP(p1, *src);

            ROP_OP(p2, *(src+1));

            if ((p1 != s->vga.gr[0x34]) || (p2 != s->vga.gr[0x35])) {

                *dst = p1;

                *(dst+1) = p2;

            }

            dst+=2;

            src+=2;

        }

        dst += dstpitch;

        src += srcpitch;

    }

}

static void

glue(glue(cirrus_bitblt_rop_bkwd_transp_, ROP_NAME),_16)(CirrusVGAState *s,

                                                         uint8_t *dst,const uint8_t *src,

                                                         int dstpitch,int srcpitch,

                                                         int bltwidth,int bltheight)

{

    int x,y;

    uint8_t p1, p2;

    dstpitch += bltwidth;

    srcpitch += bltwidth;

    for (y = 0; y < bltheight; y++) {

        for (x = 0; x < bltwidth; x+=2) {

            p1 = *(dst-1);

            p2 = *dst;

            ROP_OP(p1, *(src-1));

            ROP_OP(p2, *src);

            if ((p1 != s->vga.gr[0x34]) || (p2 != s->vga.gr[0x35])) {

                *(dst-1) = p1;

                *dst = p2;

            }

            dst-=2;

            src-=2;

        }

        dst += dstpitch;

        src += srcpitch;

    }

}

#define DEPTH 8

#include "cirrus_vga_rop2.h"

#define DEPTH 16

#include "cirrus_vga_rop2.h"

#define DEPTH 24

#include "cirrus_vga_rop2.h"

#define DEPTH 32

#include "cirrus_vga_rop2.h"

#undef ROP_NAME

#undef ROP_OP