diff options
Diffstat (limited to 'hw/cirrus_vga_rop2.h')
| -rw-r--r-- | hw/cirrus_vga_rop2.h | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/hw/cirrus_vga_rop2.h b/hw/cirrus_vga_rop2.h new file mode 100644 index 0000000000..682662741e --- /dev/null +++ b/hw/cirrus_vga_rop2.h @@ -0,0 +1,140 @@ +/* + * 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. + */ + +#if DEPTH == 8 +#define PUTPIXEL() ROP_OP(d[0], col) +#elif DEPTH == 16 +#define PUTPIXEL() ROP_OP(((uint16_t *)d)[0], col); +#elif DEPTH == 24 +#define PUTPIXEL() ROP_OP(d[0], col); \ + ROP_OP(d[1], (col >> 8)); \ + ROP_OP(d[2], (col >> 16)) +#elif DEPTH == 32 +#define PUTPIXEL() ROP_OP(((uint32_t *)d)[0], col) +#else +#error unsupported DEPTH +#endif + +static void +glue(glue(glue(cirrus_colorexpand_transp_, ROP_NAME), _),DEPTH) + (CirrusVGAState * s, uint8_t * dst, + const uint8_t * src1, + int dstpitch, int srcpitch, + int bltwidth, int bltheight) +{ + const uint8_t *src; + uint8_t *d; + int x, y; + unsigned bits; + unsigned int col; + unsigned bitmask; + unsigned index; + int srcskipleft = 0; + + col = s->cirrus_blt_fgcol; + for(y = 0; y < bltheight; y++) { + src = src1; + bitmask = 0x80 >> srcskipleft; + bits = *src++; + d = dst; + for (x = 0; x < bltwidth; x += (DEPTH / 8)) { + if ((bitmask & 0xff) == 0) { + bitmask = 0x80; + bits = *src++; + } + index = (bits & bitmask); + if (index) { + PUTPIXEL(); + } + d += (DEPTH / 8); + bitmask >>= 1; + } + src1 += srcpitch; + dst += dstpitch; + } +} + +static void +glue(glue(glue(cirrus_colorexpand_, ROP_NAME), _),DEPTH) + (CirrusVGAState * s, uint8_t * dst, + const uint8_t * src1, + int dstpitch, int srcpitch, + int bltwidth, int bltheight) +{ + const uint8_t *src; + uint32_t colors[2]; + uint8_t *d; + int x, y; + unsigned bits; + unsigned int col; + unsigned bitmask; + int srcskipleft = 0; + + colors[0] = s->cirrus_blt_bgcol; + colors[1] = s->cirrus_blt_fgcol; + for(y = 0; y < bltheight; y++) { + src = src1; + bitmask = 0x80 >> srcskipleft; + bits = *src++; + d = dst; + for (x = 0; x < bltwidth; x += (DEPTH / 8)) { + if ((bitmask & 0xff) == 0) { + bitmask = 0x80; + bits = *src++; + } + col = colors[!!(bits & bitmask)]; + PUTPIXEL(); + d += (DEPTH / 8); + bitmask >>= 1; + } + src1 += srcpitch; + dst += dstpitch; + } +} + +static void +glue(glue(glue(cirrus_fill_, ROP_NAME), _),DEPTH) + (CirrusVGAState *s, + uint8_t *dst, int dst_pitch, + int width, int height) +{ + uint8_t *d, *d1; + uint32_t col; + int x, y; + + col = s->cirrus_blt_fgcol; + + d1 = dst; + for(y = 0; y < height; y++) { + d = d1; + for(x = 0; x < width; x += (DEPTH / 8)) { + PUTPIXEL(); + d += (DEPTH / 8); + } + d1 += dst_pitch; + } +} + +#undef DEPTH +#undef PUTPIXEL |