| /* |
| * QEMU 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. |
| */ |
| |
| static inline void vga_draw_glyph_line(uint8_t *d, uint32_t font_data, |
| uint32_t xorcol, uint32_t bgcol) |
| { |
| ((uint32_t *)d)[0] = (-((font_data >> 7)) & xorcol) ^ bgcol; |
| ((uint32_t *)d)[1] = (-((font_data >> 6) & 1) & xorcol) ^ bgcol; |
| ((uint32_t *)d)[2] = (-((font_data >> 5) & 1) & xorcol) ^ bgcol; |
| ((uint32_t *)d)[3] = (-((font_data >> 4) & 1) & xorcol) ^ bgcol; |
| ((uint32_t *)d)[4] = (-((font_data >> 3) & 1) & xorcol) ^ bgcol; |
| ((uint32_t *)d)[5] = (-((font_data >> 2) & 1) & xorcol) ^ bgcol; |
| ((uint32_t *)d)[6] = (-((font_data >> 1) & 1) & xorcol) ^ bgcol; |
| ((uint32_t *)d)[7] = (-((font_data >> 0) & 1) & xorcol) ^ bgcol; |
| } |
| |
| static void vga_draw_glyph8(uint8_t *d, int linesize, |
| const uint8_t *font_ptr, int h, |
| uint32_t fgcol, uint32_t bgcol) |
| { |
| uint32_t font_data, xorcol; |
| |
| xorcol = bgcol ^ fgcol; |
| do { |
| font_data = font_ptr[0]; |
| vga_draw_glyph_line(d, font_data, xorcol, bgcol); |
| font_ptr += 4; |
| d += linesize; |
| } while (--h); |
| } |
| |
| static void vga_draw_glyph16(uint8_t *d, int linesize, |
| const uint8_t *font_ptr, int h, |
| uint32_t fgcol, uint32_t bgcol) |
| { |
| uint32_t font_data, xorcol; |
| |
| xorcol = bgcol ^ fgcol; |
| do { |
| font_data = font_ptr[0]; |
| vga_draw_glyph_line(d, expand4to8[font_data >> 4], |
| xorcol, bgcol); |
| vga_draw_glyph_line(d + 32, expand4to8[font_data & 0x0f], |
| xorcol, bgcol); |
| font_ptr += 4; |
| d += linesize; |
| } while (--h); |
| } |
| |
| static void vga_draw_glyph9(uint8_t *d, int linesize, |
| const uint8_t *font_ptr, int h, |
| uint32_t fgcol, uint32_t bgcol, int dup9) |
| { |
| uint32_t font_data, xorcol, v; |
| |
| xorcol = bgcol ^ fgcol; |
| do { |
| font_data = font_ptr[0]; |
| ((uint32_t *)d)[0] = (-((font_data >> 7)) & xorcol) ^ bgcol; |
| ((uint32_t *)d)[1] = (-((font_data >> 6) & 1) & xorcol) ^ bgcol; |
| ((uint32_t *)d)[2] = (-((font_data >> 5) & 1) & xorcol) ^ bgcol; |
| ((uint32_t *)d)[3] = (-((font_data >> 4) & 1) & xorcol) ^ bgcol; |
| ((uint32_t *)d)[4] = (-((font_data >> 3) & 1) & xorcol) ^ bgcol; |
| ((uint32_t *)d)[5] = (-((font_data >> 2) & 1) & xorcol) ^ bgcol; |
| ((uint32_t *)d)[6] = (-((font_data >> 1) & 1) & xorcol) ^ bgcol; |
| v = (-((font_data >> 0) & 1) & xorcol) ^ bgcol; |
| ((uint32_t *)d)[7] = v; |
| if (dup9) |
| ((uint32_t *)d)[8] = v; |
| else |
| ((uint32_t *)d)[8] = bgcol; |
| font_ptr += 4; |
| d += linesize; |
| } while (--h); |
| } |
| |
| /* |
| * 4 color mode |
| */ |
| static void *vga_draw_line2(VGACommonState *vga, uint8_t *d, |
| uint32_t addr, int width, int hpel) |
| { |
| uint32_t plane_mask, *palette, data, v; |
| int x; |
| |
| palette = vga->last_palette; |
| plane_mask = mask16[vga->ar[VGA_ATC_PLANE_ENABLE] & 0xf]; |
| hpel &= 7; |
| if (hpel) { |
| width += 8; |
| d = vga->panning_buf; |
| } |
| width >>= 3; |
| for(x = 0; x < width; x++) { |
| data = vga_read_dword_le(vga, addr & (VGA_VRAM_SIZE - 1)); |
| data &= plane_mask; |
| v = expand2[GET_PLANE(data, 0)]; |
| v |= expand2[GET_PLANE(data, 2)] << 2; |
| ((uint32_t *)d)[0] = palette[v >> 12]; |
| ((uint32_t *)d)[1] = palette[(v >> 8) & 0xf]; |
| ((uint32_t *)d)[2] = palette[(v >> 4) & 0xf]; |
| ((uint32_t *)d)[3] = palette[(v >> 0) & 0xf]; |
| |
| v = expand2[GET_PLANE(data, 1)]; |
| v |= expand2[GET_PLANE(data, 3)] << 2; |
| ((uint32_t *)d)[4] = palette[v >> 12]; |
| ((uint32_t *)d)[5] = palette[(v >> 8) & 0xf]; |
| ((uint32_t *)d)[6] = palette[(v >> 4) & 0xf]; |
| ((uint32_t *)d)[7] = palette[(v >> 0) & 0xf]; |
| d += 32; |
| addr += 4; |
| } |
| return hpel ? vga->panning_buf + 4 * hpel : NULL; |
| } |
| |
| #define PUT_PIXEL2(d, n, v) \ |
| ((uint32_t *)d)[2*(n)] = ((uint32_t *)d)[2*(n)+1] = (v) |
| |
| /* |
| * 4 color mode, dup2 horizontal |
| */ |
| static void *vga_draw_line2d2(VGACommonState *vga, uint8_t *d, |
| uint32_t addr, int width, int hpel) |
| { |
| uint32_t plane_mask, *palette, data, v; |
| int x; |
| |
| palette = vga->last_palette; |
| plane_mask = mask16[vga->ar[VGA_ATC_PLANE_ENABLE] & 0xf]; |
| hpel &= 7; |
| if (hpel) { |
| width += 8; |
| d = vga->panning_buf; |
| } |
| width >>= 3; |
| for(x = 0; x < width; x++) { |
| data = vga_read_dword_le(vga, addr & (VGA_VRAM_SIZE - 1)); |
| data &= plane_mask; |
| v = expand2[GET_PLANE(data, 0)]; |
| v |= expand2[GET_PLANE(data, 2)] << 2; |
| PUT_PIXEL2(d, 0, palette[v >> 12]); |
| PUT_PIXEL2(d, 1, palette[(v >> 8) & 0xf]); |
| PUT_PIXEL2(d, 2, palette[(v >> 4) & 0xf]); |
| PUT_PIXEL2(d, 3, palette[(v >> 0) & 0xf]); |
| |
| v = expand2[GET_PLANE(data, 1)]; |
| v |= expand2[GET_PLANE(data, 3)] << 2; |
| PUT_PIXEL2(d, 4, palette[v >> 12]); |
| PUT_PIXEL2(d, 5, palette[(v >> 8) & 0xf]); |
| PUT_PIXEL2(d, 6, palette[(v >> 4) & 0xf]); |
| PUT_PIXEL2(d, 7, palette[(v >> 0) & 0xf]); |
| d += 64; |
| addr += 4; |
| } |
| return hpel ? vga->panning_buf + 8 * hpel : NULL; |
| } |
| |
| /* |
| * 16 color mode |
| */ |
| static void *vga_draw_line4(VGACommonState *vga, uint8_t *d, |
| uint32_t addr, int width, int hpel) |
| { |
| uint32_t plane_mask, data, v, *palette; |
| int x; |
| |
| palette = vga->last_palette; |
| plane_mask = mask16[vga->ar[VGA_ATC_PLANE_ENABLE] & 0xf]; |
| hpel &= 7; |
| if (hpel) { |
| width += 8; |
| d = vga->panning_buf; |
| } |
| width >>= 3; |
| for(x = 0; x < width; x++) { |
| data = vga_read_dword_le(vga, addr & (VGA_VRAM_SIZE - 1)); |
| data &= plane_mask; |
| v = expand4[GET_PLANE(data, 0)]; |
| v |= expand4[GET_PLANE(data, 1)] << 1; |
| v |= expand4[GET_PLANE(data, 2)] << 2; |
| v |= expand4[GET_PLANE(data, 3)] << 3; |
| ((uint32_t *)d)[0] = palette[v >> 28]; |
| ((uint32_t *)d)[1] = palette[(v >> 24) & 0xf]; |
| ((uint32_t *)d)[2] = palette[(v >> 20) & 0xf]; |
| ((uint32_t *)d)[3] = palette[(v >> 16) & 0xf]; |
| ((uint32_t *)d)[4] = palette[(v >> 12) & 0xf]; |
| ((uint32_t *)d)[5] = palette[(v >> 8) & 0xf]; |
| ((uint32_t *)d)[6] = palette[(v >> 4) & 0xf]; |
| ((uint32_t *)d)[7] = palette[(v >> 0) & 0xf]; |
| d += 32; |
| addr += 4; |
| } |
| return hpel ? vga->panning_buf + 4 * hpel : NULL; |
| } |
| |
| /* |
| * 16 color mode, dup2 horizontal |
| */ |
| static void *vga_draw_line4d2(VGACommonState *vga, uint8_t *d, |
| uint32_t addr, int width, int hpel) |
| { |
| uint32_t plane_mask, data, v, *palette; |
| int x; |
| |
| palette = vga->last_palette; |
| plane_mask = mask16[vga->ar[VGA_ATC_PLANE_ENABLE] & 0xf]; |
| hpel &= 7; |
| if (hpel) { |
| width += 8; |
| d = vga->panning_buf; |
| } |
| width >>= 3; |
| for(x = 0; x < width; x++) { |
| data = vga_read_dword_le(vga, addr & (VGA_VRAM_SIZE - 1)); |
| data &= plane_mask; |
| v = expand4[GET_PLANE(data, 0)]; |
| v |= expand4[GET_PLANE(data, 1)] << 1; |
| v |= expand4[GET_PLANE(data, 2)] << 2; |
| v |= expand4[GET_PLANE(data, 3)] << 3; |
| PUT_PIXEL2(d, 0, palette[v >> 28]); |
| PUT_PIXEL2(d, 1, palette[(v >> 24) & 0xf]); |
| PUT_PIXEL2(d, 2, palette[(v >> 20) & 0xf]); |
| PUT_PIXEL2(d, 3, palette[(v >> 16) & 0xf]); |
| PUT_PIXEL2(d, 4, palette[(v >> 12) & 0xf]); |
| PUT_PIXEL2(d, 5, palette[(v >> 8) & 0xf]); |
| PUT_PIXEL2(d, 6, palette[(v >> 4) & 0xf]); |
| PUT_PIXEL2(d, 7, palette[(v >> 0) & 0xf]); |
| d += 64; |
| addr += 4; |
| } |
| return hpel ? vga->panning_buf + 8 * hpel : NULL; |
| } |
| |
| /* |
| * 256 color mode, double pixels |
| * |
| * XXX: add plane_mask support (never used in standard VGA modes) |
| */ |
| static void *vga_draw_line8d2(VGACommonState *vga, uint8_t *d, |
| uint32_t addr, int width, int hpel) |
| { |
| uint32_t *palette; |
| int x; |
| |
| palette = vga->last_palette; |
| hpel = (hpel >> 1) & 3; |
| |
| /* For 256 color modes, we can adjust the source address and write directly |
| * to the destination, even if horizontal pel panning is active. However, |
| * the loop below assumes that the address does not wrap in the middle of a |
| * plane. If that happens... |
| */ |
| if (addr + (width >> 3) * 4 < VGA_VRAM_SIZE) { |
| addr += hpel * 4; |
| hpel = 0; |
| } |
| |
| /* ... use the panning buffer as in planar modes. */ |
| if (hpel) { |
| width += 8; |
| d = vga->panning_buf; |
| } |
| width >>= 3; |
| for(x = 0; x < width; x++) { |
| addr &= VGA_VRAM_SIZE - 1; |
| PUT_PIXEL2(d, 0, palette[vga_read_byte(vga, addr + 0)]); |
| PUT_PIXEL2(d, 1, palette[vga_read_byte(vga, addr + 1)]); |
| PUT_PIXEL2(d, 2, palette[vga_read_byte(vga, addr + 2)]); |
| PUT_PIXEL2(d, 3, palette[vga_read_byte(vga, addr + 3)]); |
| d += 32; |
| addr += 4; |
| } |
| return hpel ? vga->panning_buf + 8 * hpel : NULL; |
| } |
| |
| /* |
| * standard 256 color mode |
| * |
| * XXX: add plane_mask support (never used in standard VGA modes) |
| */ |
| static void *vga_draw_line8(VGACommonState *vga, uint8_t *d, |
| uint32_t addr, int width, int hpel) |
| { |
| uint32_t *palette; |
| int x; |
| |
| palette = vga->last_palette; |
| hpel = (hpel >> 1) & 3; |
| if (hpel) { |
| width += 8; |
| d = vga->panning_buf; |
| } |
| width >>= 3; |
| for(x = 0; x < width; x++) { |
| ((uint32_t *)d)[0] = palette[vga_read_byte(vga, addr + 0)]; |
| ((uint32_t *)d)[1] = palette[vga_read_byte(vga, addr + 1)]; |
| ((uint32_t *)d)[2] = palette[vga_read_byte(vga, addr + 2)]; |
| ((uint32_t *)d)[3] = palette[vga_read_byte(vga, addr + 3)]; |
| ((uint32_t *)d)[4] = palette[vga_read_byte(vga, addr + 4)]; |
| ((uint32_t *)d)[5] = palette[vga_read_byte(vga, addr + 5)]; |
| ((uint32_t *)d)[6] = palette[vga_read_byte(vga, addr + 6)]; |
| ((uint32_t *)d)[7] = palette[vga_read_byte(vga, addr + 7)]; |
| d += 32; |
| addr += 8; |
| } |
| return hpel ? vga->panning_buf + 4 * hpel : NULL; |
| } |
| |
| /* |
| * 15 bit color |
| */ |
| static void *vga_draw_line15_le(VGACommonState *vga, uint8_t *d, |
| uint32_t addr, int width, int hpel) |
| { |
| int w; |
| uint32_t v, r, g, b; |
| |
| w = width; |
| do { |
| v = vga_read_word_le(vga, addr); |
| r = (v >> 7) & 0xf8; |
| g = (v >> 2) & 0xf8; |
| b = (v << 3) & 0xf8; |
| ((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b); |
| addr += 2; |
| d += 4; |
| } while (--w != 0); |
| return NULL; |
| } |
| |
| static void *vga_draw_line15_be(VGACommonState *vga, uint8_t *d, |
| uint32_t addr, int width, int hpel) |
| { |
| int w; |
| uint32_t v, r, g, b; |
| |
| w = width; |
| do { |
| v = vga_read_word_be(vga, addr); |
| r = (v >> 7) & 0xf8; |
| g = (v >> 2) & 0xf8; |
| b = (v << 3) & 0xf8; |
| ((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b); |
| addr += 2; |
| d += 4; |
| } while (--w != 0); |
| return NULL; |
| } |
| |
| /* |
| * 16 bit color |
| */ |
| static void *vga_draw_line16_le(VGACommonState *vga, uint8_t *d, |
| uint32_t addr, int width, int hpel) |
| { |
| int w; |
| uint32_t v, r, g, b; |
| |
| w = width; |
| do { |
| v = vga_read_word_le(vga, addr); |
| r = (v >> 8) & 0xf8; |
| g = (v >> 3) & 0xfc; |
| b = (v << 3) & 0xf8; |
| ((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b); |
| addr += 2; |
| d += 4; |
| } while (--w != 0); |
| return NULL; |
| } |
| |
| static void *vga_draw_line16_be(VGACommonState *vga, uint8_t *d, |
| uint32_t addr, int width, int hpel) |
| { |
| int w; |
| uint32_t v, r, g, b; |
| |
| w = width; |
| do { |
| v = vga_read_word_be(vga, addr); |
| r = (v >> 8) & 0xf8; |
| g = (v >> 3) & 0xfc; |
| b = (v << 3) & 0xf8; |
| ((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b); |
| addr += 2; |
| d += 4; |
| } while (--w != 0); |
| return NULL; |
| } |
| |
| /* |
| * 24 bit color |
| */ |
| static void *vga_draw_line24_le(VGACommonState *vga, uint8_t *d, |
| uint32_t addr, int width, int hpel) |
| { |
| int w; |
| uint32_t r, g, b; |
| |
| w = width; |
| do { |
| b = vga_read_byte(vga, addr + 0); |
| g = vga_read_byte(vga, addr + 1); |
| r = vga_read_byte(vga, addr + 2); |
| ((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b); |
| addr += 3; |
| d += 4; |
| } while (--w != 0); |
| return NULL; |
| } |
| |
| static void *vga_draw_line24_be(VGACommonState *vga, uint8_t *d, |
| uint32_t addr, int width, int hpel) |
| { |
| int w; |
| uint32_t r, g, b; |
| |
| w = width; |
| do { |
| r = vga_read_byte(vga, addr + 0); |
| g = vga_read_byte(vga, addr + 1); |
| b = vga_read_byte(vga, addr + 2); |
| ((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b); |
| addr += 3; |
| d += 4; |
| } while (--w != 0); |
| return NULL; |
| } |
| |
| /* |
| * 32 bit color |
| */ |
| static void *vga_draw_line32_le(VGACommonState *vga, uint8_t *d, |
| uint32_t addr, int width, int hpel) |
| { |
| int w; |
| uint32_t r, g, b; |
| |
| w = width; |
| do { |
| b = vga_read_byte(vga, addr + 0); |
| g = vga_read_byte(vga, addr + 1); |
| r = vga_read_byte(vga, addr + 2); |
| ((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b); |
| addr += 4; |
| d += 4; |
| } while (--w != 0); |
| return NULL; |
| } |
| |
| static void *vga_draw_line32_be(VGACommonState *vga, uint8_t *d, |
| uint32_t addr, int width, int hpel) |
| { |
| int w; |
| uint32_t r, g, b; |
| |
| w = width; |
| do { |
| r = vga_read_byte(vga, addr + 1); |
| g = vga_read_byte(vga, addr + 2); |
| b = vga_read_byte(vga, addr + 3); |
| ((uint32_t *)d)[0] = rgb_to_pixel32(r, g, b); |
| addr += 4; |
| d += 4; |
| } while (--w != 0); |
| return NULL; |
| } |
