[qemu.git] / hw / display / cirrus_vga_template.h

/*
 * 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
Commit	Line	Data
94d7b483 BS	1	/*
	2	* QEMU Cirrus VGA Emulator templates
	3	*
	4	* Copyright (c) 2003 Fabrice Bellard
	5	*
	6	* Permission is hereby granted, free of charge, to any person obtaining a copy
	7	* of this software and associated documentation files (the "Software"), to deal
	8	* in the Software without restriction, including without limitation the rights
	9	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	10	* copies of the Software, and to permit persons to whom the Software is
	11	* furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice shall be included in
	14	* all copies or substantial portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	19	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	21	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	22	* THE SOFTWARE.
	23	*/
	24
	25	#if DEPTH == 8
	26	#define BPP 1
	27	#elif DEPTH == 15 \|\| DEPTH == 16
	28	#define BPP 2
	29	#elif DEPTH == 32
	30	#define BPP 4
	31	#else
	32	#error unsupported depth
	33	#endif
	34
	35	static void glue(vga_draw_cursor_line_, DEPTH)(uint8_t *d1,
	36	const uint8_t *src1,
	37	int poffset, int w,
	38	unsigned int color0,
	39	unsigned int color1,
	40	unsigned int color_xor)
	41	{
	42	const uint8_t plane0, plane1;
	43	int x, b0, b1;
	44	uint8_t *d;
	45
	46	d = d1;
	47	plane0 = src1;
	48	plane1 = src1 + poffset;
	49	for (x = 0; x < w; x++) {
	50	b0 = (plane0[x >> 3] >> (7 - (x & 7))) & 1;
	51	b1 = (plane1[x >> 3] >> (7 - (x & 7))) & 1;
	52	#if DEPTH == 8
	53	switch (b0 \| (b1 << 1)) {
	54	case 0:
	55	break;
	56	case 1:
	57	d[0] ^= color_xor;
	58	break;
	59	case 2:
	60	d[0] = color0;
	61	break;
	62	case 3:
	63	d[0] = color1;
	64	break;
65	}
66	#elif DEPTH == 16
67	switch (b0 \| (b1 << 1)) {
68	case 0:
69	break;
70	case 1:
71	((uint16_t *)d)[0] ^= color_xor;
72	break;
73	case 2:
74	((uint16_t *)d)[0] = color0;
75	break;
76	case 3:
77	((uint16_t *)d)[0] = color1;
78	break;
79	}
80	#elif DEPTH == 32
81	switch (b0 \| (b1 << 1)) {
82	case 0:
83	break;
84	case 1:
85	((uint32_t *)d)[0] ^= color_xor;
86	break;
87	case 2:
88	((uint32_t *)d)[0] = color0;
89	break;
90	case 3:
91	((uint32_t *)d)[0] = color1;
92	break;
93	}
94	#else
95	#error unsupported depth
96	#endif
97	d += BPP;
98	}
99	}
100
101	#undef DEPTH
102	#undef BPP