431 lines
13 KiB
C
431 lines
13 KiB
C
/*
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* QEMU VGA Emulator templates
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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static inline void vga_draw_glyph_line(uint8_t *d, uint32_t font_data,
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uint32_t xorcol, uint32_t bgcol)
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{
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((uint32_t *)d)[0] = (-((font_data >> 7)) & xorcol) ^ bgcol;
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((uint32_t *)d)[1] = (-((font_data >> 6) & 1) & xorcol) ^ bgcol;
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((uint32_t *)d)[2] = (-((font_data >> 5) & 1) & xorcol) ^ bgcol;
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((uint32_t *)d)[3] = (-((font_data >> 4) & 1) & xorcol) ^ bgcol;
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((uint32_t *)d)[4] = (-((font_data >> 3) & 1) & xorcol) ^ bgcol;
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((uint32_t *)d)[5] = (-((font_data >> 2) & 1) & xorcol) ^ bgcol;
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((uint32_t *)d)[6] = (-((font_data >> 1) & 1) & xorcol) ^ bgcol;
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((uint32_t *)d)[7] = (-((font_data >> 0) & 1) & xorcol) ^ bgcol;
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}
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static void vga_draw_glyph8(uint8_t *d, int linesize,
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const uint8_t *font_ptr, int h,
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uint32_t fgcol, uint32_t bgcol)
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{
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uint32_t font_data, xorcol;
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xorcol = bgcol ^ fgcol;
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do {
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font_data = font_ptr[0];
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vga_draw_glyph_line(d, font_data, xorcol, bgcol);
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font_ptr += 4;
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d += linesize;
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} while (--h);
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}
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static void vga_draw_glyph16(uint8_t *d, int linesize,
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const uint8_t *font_ptr, int h,
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uint32_t fgcol, uint32_t bgcol)
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{
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uint32_t font_data, xorcol;
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xorcol = bgcol ^ fgcol;
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do {
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font_data = font_ptr[0];
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vga_draw_glyph_line(d, expand4to8[font_data >> 4],
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xorcol, bgcol);
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vga_draw_glyph_line(d + 32, expand4to8[font_data & 0x0f],
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xorcol, bgcol);
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font_ptr += 4;
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d += linesize;
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} while (--h);
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}
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static void vga_draw_glyph9(uint8_t *d, int linesize,
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const uint8_t *font_ptr, int h,
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uint32_t fgcol, uint32_t bgcol, int dup9)
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{
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uint32_t font_data, xorcol, v;
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xorcol = bgcol ^ fgcol;
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do {
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font_data = font_ptr[0];
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((uint32_t *)d)[0] = (-((font_data >> 7)) & xorcol) ^ bgcol;
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((uint32_t *)d)[1] = (-((font_data >> 6) & 1) & xorcol) ^ bgcol;
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((uint32_t *)d)[2] = (-((font_data >> 5) & 1) & xorcol) ^ bgcol;
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((uint32_t *)d)[3] = (-((font_data >> 4) & 1) & xorcol) ^ bgcol;
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((uint32_t *)d)[4] = (-((font_data >> 3) & 1) & xorcol) ^ bgcol;
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((uint32_t *)d)[5] = (-((font_data >> 2) & 1) & xorcol) ^ bgcol;
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((uint32_t *)d)[6] = (-((font_data >> 1) & 1) & xorcol) ^ bgcol;
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v = (-((font_data >> 0) & 1) & xorcol) ^ bgcol;
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((uint32_t *)d)[7] = v;
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if (dup9)
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((uint32_t *)d)[8] = v;
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else
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((uint32_t *)d)[8] = bgcol;
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font_ptr += 4;
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d += linesize;
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} while (--h);
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}
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/*
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* 4 color mode
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*/
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static void vga_draw_line2(VGACommonState *vga, uint8_t *d,
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uint32_t addr, int width)
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{
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uint32_t plane_mask, *palette, data, v;
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int x;
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palette = vga->last_palette;
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plane_mask = mask16[vga->ar[VGA_ATC_PLANE_ENABLE] & 0xf];
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width >>= 3;
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for(x = 0; x < width; x++) {
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data = vga_read_dword_le(vga, addr);
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data &= plane_mask;
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v = expand2[GET_PLANE(data, 0)];
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v |= expand2[GET_PLANE(data, 2)] << 2;
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((uint32_t *)d)[0] = palette[v >> 12];
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((uint32_t *)d)[1] = palette[(v >> 8) & 0xf];
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((uint32_t *)d)[2] = palette[(v >> 4) & 0xf];
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((uint32_t *)d)[3] = palette[(v >> 0) & 0xf];
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v = expand2[GET_PLANE(data, 1)];
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v |= expand2[GET_PLANE(data, 3)] << 2;
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((uint32_t *)d)[4] = palette[v >> 12];
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((uint32_t *)d)[5] = palette[(v >> 8) & 0xf];
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((uint32_t *)d)[6] = palette[(v >> 4) & 0xf];
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((uint32_t *)d)[7] = palette[(v >> 0) & 0xf];
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d += 32;
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addr += 4;
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}
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}
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#define PUT_PIXEL2(d, n, v) \
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((uint32_t *)d)[2*(n)] = ((uint32_t *)d)[2*(n)+1] = (v)
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/*
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* 4 color mode, dup2 horizontal
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*/
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static void vga_draw_line2d2(VGACommonState *vga, uint8_t *d,
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uint32_t addr, int width)
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{
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uint32_t plane_mask, *palette, data, v;
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int x;
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palette = vga->last_palette;
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plane_mask = mask16[vga->ar[VGA_ATC_PLANE_ENABLE] & 0xf];
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width >>= 3;
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for(x = 0; x < width; x++) {
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data = vga_read_dword_le(vga, addr);
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data &= plane_mask;
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v = expand2[GET_PLANE(data, 0)];
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v |= expand2[GET_PLANE(data, 2)] << 2;
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PUT_PIXEL2(d, 0, palette[v >> 12]);
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PUT_PIXEL2(d, 1, palette[(v >> 8) & 0xf]);
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PUT_PIXEL2(d, 2, palette[(v >> 4) & 0xf]);
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PUT_PIXEL2(d, 3, palette[(v >> 0) & 0xf]);
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v = expand2[GET_PLANE(data, 1)];
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v |= expand2[GET_PLANE(data, 3)] << 2;
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PUT_PIXEL2(d, 4, palette[v >> 12]);
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PUT_PIXEL2(d, 5, palette[(v >> 8) & 0xf]);
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PUT_PIXEL2(d, 6, palette[(v >> 4) & 0xf]);
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PUT_PIXEL2(d, 7, palette[(v >> 0) & 0xf]);
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d += 64;
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addr += 4;
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}
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}
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/*
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* 16 color mode
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*/
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static void vga_draw_line4(VGACommonState *vga, uint8_t *d,
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uint32_t addr, int width)
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{
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uint32_t plane_mask, data, v, *palette;
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int x;
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palette = vga->last_palette;
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plane_mask = mask16[vga->ar[VGA_ATC_PLANE_ENABLE] & 0xf];
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width >>= 3;
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for(x = 0; x < width; x++) {
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data = vga_read_dword_le(vga, addr);
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data &= plane_mask;
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v = expand4[GET_PLANE(data, 0)];
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v |= expand4[GET_PLANE(data, 1)] << 1;
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v |= expand4[GET_PLANE(data, 2)] << 2;
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v |= expand4[GET_PLANE(data, 3)] << 3;
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((uint32_t *)d)[0] = palette[v >> 28];
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((uint32_t *)d)[1] = palette[(v >> 24) & 0xf];
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((uint32_t *)d)[2] = palette[(v >> 20) & 0xf];
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((uint32_t *)d)[3] = palette[(v >> 16) & 0xf];
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((uint32_t *)d)[4] = palette[(v >> 12) & 0xf];
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((uint32_t *)d)[5] = palette[(v >> 8) & 0xf];
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((uint32_t *)d)[6] = palette[(v >> 4) & 0xf];
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((uint32_t *)d)[7] = palette[(v >> 0) & 0xf];
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d += 32;
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addr += 4;
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}
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}
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/*
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* 16 color mode, dup2 horizontal
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*/
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static void vga_draw_line4d2(VGACommonState *vga, uint8_t *d,
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uint32_t addr, int width)
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{
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uint32_t plane_mask, data, v, *palette;
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int x;
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palette = vga->last_palette;
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plane_mask = mask16[vga->ar[VGA_ATC_PLANE_ENABLE] & 0xf];
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width >>= 3;
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for(x = 0; x < width; x++) {
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data = vga_read_dword_le(vga, addr);
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data &= plane_mask;
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v = expand4[GET_PLANE(data, 0)];
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v |= expand4[GET_PLANE(data, 1)] << 1;
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v |= expand4[GET_PLANE(data, 2)] << 2;
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v |= expand4[GET_PLANE(data, 3)] << 3;
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PUT_PIXEL2(d, 0, palette[v >> 28]);
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PUT_PIXEL2(d, 1, palette[(v >> 24) & 0xf]);
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PUT_PIXEL2(d, 2, palette[(v >> 20) & 0xf]);
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PUT_PIXEL2(d, 3, palette[(v >> 16) & 0xf]);
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PUT_PIXEL2(d, 4, palette[(v >> 12) & 0xf]);
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PUT_PIXEL2(d, 5, palette[(v >> 8) & 0xf]);
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PUT_PIXEL2(d, 6, palette[(v >> 4) & 0xf]);
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PUT_PIXEL2(d, 7, palette[(v >> 0) & 0xf]);
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d += 64;
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addr += 4;
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}
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}
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/*
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* 256 color mode, double pixels
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*
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* XXX: add plane_mask support (never used in standard VGA modes)
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*/
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static void vga_draw_line8d2(VGACommonState *vga, uint8_t *d,
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uint32_t addr, int width)
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{
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uint32_t *palette;
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int x;
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palette = vga->last_palette;
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width >>= 3;
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for(x = 0; x < width; x++) {
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PUT_PIXEL2(d, 0, palette[vga_read_byte(vga, addr + 0)]);
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PUT_PIXEL2(d, 1, palette[vga_read_byte(vga, addr + 1)]);
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PUT_PIXEL2(d, 2, palette[vga_read_byte(vga, addr + 2)]);
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PUT_PIXEL2(d, 3, palette[vga_read_byte(vga, addr + 3)]);
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d += 32;
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addr += 4;
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}
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}
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/*
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* standard 256 color mode
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*
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* XXX: add plane_mask support (never used in standard VGA modes)
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*/
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static void vga_draw_line8(VGACommonState *vga, uint8_t *d,
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uint32_t addr, int width)
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{
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uint32_t *palette;
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int x;
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palette = vga->last_palette;
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width >>= 3;
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for(x = 0; x < width; x++) {
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((uint32_t *)d)[0] = palette[vga_read_byte(vga, addr + 0)];
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((uint32_t *)d)[1] = palette[vga_read_byte(vga, addr + 1)];
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((uint32_t *)d)[2] = palette[vga_read_byte(vga, addr + 2)];
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((uint32_t *)d)[3] = palette[vga_read_byte(vga, addr + 3)];
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((uint32_t *)d)[4] = palette[vga_read_byte(vga, addr + 4)];
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((uint32_t *)d)[5] = palette[vga_read_byte(vga, addr + 5)];
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((uint32_t *)d)[6] = palette[vga_read_byte(vga, addr + 6)];
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((uint32_t *)d)[7] = palette[vga_read_byte(vga, addr + 7)];
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d += 32;
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addr += 8;
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}
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}
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/*
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* 15 bit color
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*/
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static void vga_draw_line15_le(VGACommonState *vga, uint8_t *d,
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uint32_t addr, int width)
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{
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int w;
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uint32_t v, r, g, b;
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w = width;
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do {
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v = vga_read_word_le(vga, addr);
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r = (v >> 7) & 0xf8;
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g = (v >> 2) & 0xf8;
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b = (v << 3) & 0xf8;
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((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
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addr += 2;
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d += 4;
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} while (--w != 0);
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}
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static void vga_draw_line15_be(VGACommonState *vga, uint8_t *d,
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uint32_t addr, int width)
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{
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int w;
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uint32_t v, r, g, b;
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w = width;
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do {
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v = vga_read_word_be(vga, addr);
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r = (v >> 7) & 0xf8;
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g = (v >> 2) & 0xf8;
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b = (v << 3) & 0xf8;
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((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
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addr += 2;
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d += 4;
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} while (--w != 0);
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}
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/*
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* 16 bit color
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*/
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static void vga_draw_line16_le(VGACommonState *vga, uint8_t *d,
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uint32_t addr, int width)
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{
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int w;
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uint32_t v, r, g, b;
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w = width;
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do {
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v = vga_read_word_le(vga, addr);
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r = (v >> 8) & 0xf8;
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g = (v >> 3) & 0xfc;
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b = (v << 3) & 0xf8;
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((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
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addr += 2;
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d += 4;
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} while (--w != 0);
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}
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static void vga_draw_line16_be(VGACommonState *vga, uint8_t *d,
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uint32_t addr, int width)
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{
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int w;
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uint32_t v, r, g, b;
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w = width;
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do {
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v = vga_read_word_be(vga, addr);
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r = (v >> 8) & 0xf8;
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g = (v >> 3) & 0xfc;
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b = (v << 3) & 0xf8;
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((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
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addr += 2;
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d += 4;
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} while (--w != 0);
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}
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/*
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* 24 bit color
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*/
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static void vga_draw_line24_le(VGACommonState *vga, uint8_t *d,
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uint32_t addr, int width)
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{
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int w;
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uint32_t r, g, b;
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w = width;
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do {
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b = vga_read_byte(vga, addr + 0);
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g = vga_read_byte(vga, addr + 1);
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r = vga_read_byte(vga, addr + 2);
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((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
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addr += 3;
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d += 4;
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} while (--w != 0);
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}
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static void vga_draw_line24_be(VGACommonState *vga, uint8_t *d,
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uint32_t addr, int width)
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{
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int w;
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uint32_t r, g, b;
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w = width;
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do {
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r = vga_read_byte(vga, addr + 0);
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g = vga_read_byte(vga, addr + 1);
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b = vga_read_byte(vga, addr + 2);
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((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
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addr += 3;
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d += 4;
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} while (--w != 0);
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}
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/*
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* 32 bit color
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*/
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static void vga_draw_line32_le(VGACommonState *vga, uint8_t *d,
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uint32_t addr, int width)
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{
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int w;
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uint32_t r, g, b;
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w = width;
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do {
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b = vga_read_byte(vga, addr + 0);
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g = vga_read_byte(vga, addr + 1);
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r = vga_read_byte(vga, addr + 2);
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((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
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addr += 4;
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d += 4;
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} while (--w != 0);
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}
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static void vga_draw_line32_be(VGACommonState *vga, uint8_t *d,
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uint32_t addr, int width)
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{
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int w;
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uint32_t r, g, b;
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w = width;
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do {
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r = vga_read_byte(vga, addr + 1);
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g = vga_read_byte(vga, addr + 2);
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b = vga_read_byte(vga, addr + 3);
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((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b);
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addr += 4;
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d += 4;
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} while (--w != 0);
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}
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