diff options
Diffstat (limited to 'hw/display/ati_2d.c')
| -rw-r--r-- | hw/display/ati_2d.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/hw/display/ati_2d.c b/hw/display/ati_2d.c new file mode 100644 index 0000000..bc98ba6 --- /dev/null +++ b/hw/display/ati_2d.c @@ -0,0 +1,167 @@ +/* + * QEMU ATI SVGA emulation + * 2D engine functions + * + * Copyright (c) 2019 BALATON Zoltan + * + * This work is licensed under the GNU GPL license version 2 or later. + */ + +#include "ati_int.h" +#include "ati_regs.h" +#include "qemu/log.h" +#include "ui/pixel_ops.h" + +/* + * NOTE: + * This is 2D _acceleration_ and supposed to be fast. Therefore, don't try to + * reinvent the wheel (unlikely to get better with a naive implementation than + * existing libraries) and avoid (poorly) reimplementing gfx primitives. + * That is unnecessary and would become a performance problem. Instead, try to + * map to and reuse existing optimised facilities (e.g. pixman) wherever + * possible. + */ + +static int ati_bpp_from_datatype(ATIVGAState *s) +{ + switch (s->regs.dp_datatype & 0xf) { + case 2: + return 8; + case 3: + case 4: + return 16; + case 5: + return 24; + case 6: + return 32; + default: + qemu_log_mask(LOG_UNIMP, "Unknown dst datatype %d\n", + s->regs.dp_datatype & 0xf); + return 0; + } +} + +void ati_2d_blt(ATIVGAState *s) +{ + /* FIXME it is probably more complex than this and may need to be */ + /* rewritten but for now as a start just to get some output: */ + DisplaySurface *ds = qemu_console_surface(s->vga.con); + DPRINTF("%p %u ds: %p %d %d rop: %x\n", s->vga.vram_ptr, + s->vga.vbe_start_addr, surface_data(ds), surface_stride(ds), + surface_bits_per_pixel(ds), + (s->regs.dp_mix & GMC_ROP3_MASK) >> 16); + DPRINTF("%d %d, %d %d, (%d,%d) -> (%d,%d) %dx%d\n", s->regs.src_offset, + s->regs.dst_offset, s->regs.src_pitch, s->regs.dst_pitch, + s->regs.src_x, s->regs.src_y, s->regs.dst_x, s->regs.dst_y, + s->regs.dst_width, s->regs.dst_height); + switch (s->regs.dp_mix & GMC_ROP3_MASK) { + case ROP3_SRCCOPY: + { + uint8_t *src_bits, *dst_bits, *end; + int src_stride, dst_stride, bpp = ati_bpp_from_datatype(s); + src_bits = s->vga.vram_ptr + s->regs.src_offset; + dst_bits = s->vga.vram_ptr + s->regs.dst_offset; + src_stride = s->regs.src_pitch; + dst_stride = s->regs.dst_pitch; + + if (s->dev_id == PCI_DEVICE_ID_ATI_RAGE128_PF) { + src_bits += s->regs.crtc_offset & 0x07ffffff; + dst_bits += s->regs.crtc_offset & 0x07ffffff; + src_stride *= bpp; + dst_stride *= bpp; + } + src_stride /= sizeof(uint32_t); + dst_stride /= sizeof(uint32_t); + + DPRINTF("pixman_blt(%p, %p, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d)\n", + src_bits, dst_bits, src_stride, dst_stride, bpp, bpp, + s->regs.src_x, s->regs.src_y, s->regs.dst_x, s->regs.dst_y, + s->regs.dst_width, s->regs.dst_height); + end = s->vga.vram_ptr + s->vga.vram_size; + if (src_bits >= end || dst_bits >= end || + src_bits + (s->regs.src_y + s->regs.dst_height) * src_stride + + s->regs.src_x >= end || + dst_bits + (s->regs.dst_y + s->regs.dst_height) * dst_stride + + s->regs.dst_x >= end) { + qemu_log_mask(LOG_UNIMP, "blt outside vram not implemented\n"); + return; + } + pixman_blt((uint32_t *)src_bits, (uint32_t *)dst_bits, + src_stride, dst_stride, bpp, bpp, + s->regs.src_x, s->regs.src_y, + s->regs.dst_x, s->regs.dst_y, + s->regs.dst_width, s->regs.dst_height); + if (dst_bits >= s->vga.vram_ptr + s->vga.vbe_start_addr && + dst_bits < s->vga.vram_ptr + s->vga.vbe_start_addr + + s->vga.vbe_regs[VBE_DISPI_INDEX_YRES] * s->vga.vbe_line_offset) { + memory_region_set_dirty(&s->vga.vram, s->vga.vbe_start_addr + + s->regs.dst_offset + + s->regs.dst_y * surface_stride(ds), + s->regs.dst_height * surface_stride(ds)); + } + s->regs.dst_x += s->regs.dst_width; + s->regs.dst_y += s->regs.dst_height; + break; + } + case ROP3_PATCOPY: + case ROP3_BLACKNESS: + case ROP3_WHITENESS: + { + uint8_t *dst_bits, *end; + int dst_stride, bpp = ati_bpp_from_datatype(s); + uint32_t filler = 0; + dst_bits = s->vga.vram_ptr + s->regs.dst_offset; + dst_stride = s->regs.dst_pitch; + + if (s->dev_id == PCI_DEVICE_ID_ATI_RAGE128_PF) { + dst_bits += s->regs.crtc_offset & 0x07ffffff; + dst_stride *= bpp; + } + dst_stride /= sizeof(uint32_t); + + switch (s->regs.dp_mix & GMC_ROP3_MASK) { + case ROP3_PATCOPY: + filler = bswap32(s->regs.dp_brush_frgd_clr); + break; + case ROP3_BLACKNESS: + filler = rgb_to_pixel32(s->vga.palette[0], s->vga.palette[1], + s->vga.palette[2]) << 8 | 0xff; + break; + case ROP3_WHITENESS: + filler = rgb_to_pixel32(s->vga.palette[3], s->vga.palette[4], + s->vga.palette[5]) << 8 | 0xff; + break; + } + + DPRINTF("pixman_fill(%p, %d, %d, %d, %d, %d, %d, %x)\n", + dst_bits, dst_stride, bpp, + s->regs.dst_x, s->regs.dst_y, + s->regs.dst_width, s->regs.dst_height, + filler); + end = s->vga.vram_ptr + s->vga.vram_size; + if (dst_bits >= end || + dst_bits + (s->regs.dst_y + s->regs.dst_height) * dst_stride + + s->regs.dst_x >= end) { + qemu_log_mask(LOG_UNIMP, "blt outside vram not implemented\n"); + return; + } + pixman_fill((uint32_t *)dst_bits, dst_stride, bpp, + s->regs.dst_x, s->regs.dst_y, + s->regs.dst_width, s->regs.dst_height, + filler); + if (dst_bits >= s->vga.vram_ptr + s->vga.vbe_start_addr && + dst_bits < s->vga.vram_ptr + s->vga.vbe_start_addr + + s->vga.vbe_regs[VBE_DISPI_INDEX_YRES] * s->vga.vbe_line_offset) { + memory_region_set_dirty(&s->vga.vram, s->vga.vbe_start_addr + + s->regs.dst_offset + + s->regs.dst_y * surface_stride(ds), + s->regs.dst_height * surface_stride(ds)); + } + s->regs.dst_y += s->regs.dst_height; + break; + } + default: + qemu_log_mask(LOG_UNIMP, "Unimplemented ati_2d blt op %x\n", + (s->regs.dp_mix & GMC_ROP3_MASK) >> 16); + } +} |