mirror of https://gitee.com/openkylin/qemu.git
103 lines
2.9 KiB
C
103 lines
2.9 KiB
C
|
/*
|
||
|
|
* QEMU Cirrus VGA Emulator templates
|
||
|
|
*
|
||
|
|
* Copyright (c) 2003 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 BPP 1
|
||
|
|
#elif DEPTH == 15 || DEPTH == 16
|
||
|
|
#define BPP 2
|
||
|
|
#elif DEPTH == 32
|
||
|
|
#define BPP 4
|
||
|
|
#else
|
||
|
|
#error unsupported depth
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static void glue(vga_draw_cursor_line_, DEPTH)(uint8_t *d1,
|
||
|
|
const uint8_t *src1,
|
||
|
|
int poffset, int w,
|
||
|
|
unsigned int color0,
|
||
|
|
unsigned int color1,
|
||
|
|
unsigned int color_xor)
|
||
|
|
{
|
||
|
|
const uint8_t *plane0, *plane1;
|
||
|
|
int x, b0, b1;
|
||
|
|
uint8_t *d;
|
||
|
|
|
||
|
|
d = d1;
|
||
|
|
plane0 = src1;
|
||
|
|
plane1 = src1 + poffset;
|
||
|
|
for (x = 0; x < w; x++) {
|
||
|
|
b0 = (plane0[x >> 3] >> (7 - (x & 7))) & 1;
|
||
|
|
b1 = (plane1[x >> 3] >> (7 - (x & 7))) & 1;
|
||
|
|
#if DEPTH == 8
|
||
|
|
switch (b0 | (b1 << 1)) {
|
||
|
|
case 0:
|
||
|
|
break;
|
||
|
|
case 1:
|
||
|
|
d[0] ^= color_xor;
|
||
|
|
break;
|
||
|
|
case 2:
|
||
|
|
d[0] = color0;
|
||
|
|
break;
|
||
|
|
case 3:
|
||
|
|
d[0] = color1;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
#elif DEPTH == 16
|
||
|
|
switch (b0 | (b1 << 1)) {
|
||
|
|
case 0:
|
||
|
|
break;
|
||
|
|
case 1:
|
||
|
|
((uint16_t *)d)[0] ^= color_xor;
|
||
|
|
break;
|
||
|
|
case 2:
|
||
|
|
((uint16_t *)d)[0] = color0;
|
||
|
|
break;
|
||
|
|
case 3:
|
||
|
|
((uint16_t *)d)[0] = color1;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
#elif DEPTH == 32
|
||
|
|
switch (b0 | (b1 << 1)) {
|
||
|
|
case 0:
|
||
|
|
break;
|
||
|
|
case 1:
|
||
|
|
((uint32_t *)d)[0] ^= color_xor;
|
||
|
|
break;
|
||
|
|
case 2:
|
||
|
|
((uint32_t *)d)[0] = color0;
|
||
|
|
break;
|
||
|
|
case 3:
|
||
|
|
((uint32_t *)d)[0] = color1;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
#else
|
||
|
|
#error unsupported depth
|
||
|
|
#endif
|
||
|
|
d += BPP;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#undef DEPTH
|
||
|
|
#undef BPP
|