cirrus_vga_rop2.h
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/*
* 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
/* NOTE: srcpitch is ignored */
static void
glue(glue(glue(cirrus_colorexpand_transp_, ROP_NAME), _),DEPTH)
(CirrusVGAState * s, uint8_t * dst,
const uint8_t * src,
int dstpitch, int srcpitch,
int bltwidth, int bltheight)
{
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++) {
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;
}
dst += dstpitch;
}
}
/* NOTE: srcpitch is ignored */
static void
glue(glue(glue(cirrus_colorexpand_transp_inv_, ROP_NAME), _),DEPTH)
(CirrusVGAState * s, uint8_t * dst,
const uint8_t * src,
int dstpitch, int srcpitch,
int bltwidth, int bltheight)
{
uint8_t *d;
int x, y;
unsigned bits;
unsigned int col;
unsigned bitmask;
unsigned index;
int srcskipleft = 0;
col = s->cirrus_blt_bgcol;
for(y = 0; y < bltheight; y++) {
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;
}
dst += dstpitch;
}
}
static void
glue(glue(glue(cirrus_colorexpand_, ROP_NAME), _),DEPTH)
(CirrusVGAState * s, uint8_t * dst,
const uint8_t * src,
int dstpitch, int srcpitch,
int bltwidth, int bltheight)
{
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++) {
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;
}
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