diff options
Diffstat (limited to 'hw/display/ati_2d.c')
| -rw-r--r-- | hw/display/ati_2d.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/hw/display/ati_2d.c b/hw/display/ati_2d.c new file mode 100644 index 000000000..4dc10ea79 --- /dev/null +++ b/hw/display/ati_2d.c @@ -0,0 +1,206 @@ +/* + * 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 "qemu/osdep.h" +#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; + } +} + +#define DEFAULT_CNTL (s->regs.dp_gui_master_cntl & GMC_DST_PITCH_OFFSET_CNTL) + +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); + unsigned dst_x = (s->regs.dp_cntl & DST_X_LEFT_TO_RIGHT ? + s->regs.dst_x : s->regs.dst_x + 1 - s->regs.dst_width); + unsigned dst_y = (s->regs.dp_cntl & DST_Y_TOP_TO_BOTTOM ? + s->regs.dst_y : s->regs.dst_y + 1 - s->regs.dst_height); + int bpp = ati_bpp_from_datatype(s); + if (!bpp) { + qemu_log_mask(LOG_GUEST_ERROR, "Invalid bpp\n"); + return; + } + int dst_stride = DEFAULT_CNTL ? s->regs.dst_pitch : s->regs.default_pitch; + if (!dst_stride) { + qemu_log_mask(LOG_GUEST_ERROR, "Zero dest pitch\n"); + return; + } + uint8_t *dst_bits = s->vga.vram_ptr + (DEFAULT_CNTL ? + s->regs.dst_offset : s->regs.default_offset); + + if (s->dev_id == PCI_DEVICE_ID_ATI_RAGE128_PF) { + dst_bits += s->regs.crtc_offset & 0x07ffffff; + dst_stride *= bpp; + } + uint8_t *end = s->vga.vram_ptr + s->vga.vram_size; + if (dst_x > 0x3fff || dst_y > 0x3fff || dst_bits >= end + || dst_bits + dst_x + + (dst_y + s->regs.dst_height) * dst_stride >= end) { + qemu_log_mask(LOG_UNIMP, "blt outside vram not implemented\n"); + return; + } + DPRINTF("%d %d %d, %d %d %d, (%d,%d) -> (%d,%d) %dx%d %c %c\n", + s->regs.src_offset, s->regs.dst_offset, s->regs.default_offset, + s->regs.src_pitch, s->regs.dst_pitch, s->regs.default_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, + (s->regs.dp_cntl & DST_X_LEFT_TO_RIGHT ? '>' : '<'), + (s->regs.dp_cntl & DST_Y_TOP_TO_BOTTOM ? 'v' : '^')); + switch (s->regs.dp_mix & GMC_ROP3_MASK) { + case ROP3_SRCCOPY: + { + unsigned src_x = (s->regs.dp_cntl & DST_X_LEFT_TO_RIGHT ? + s->regs.src_x : s->regs.src_x + 1 - s->regs.dst_width); + unsigned src_y = (s->regs.dp_cntl & DST_Y_TOP_TO_BOTTOM ? + s->regs.src_y : s->regs.src_y + 1 - s->regs.dst_height); + int src_stride = DEFAULT_CNTL ? + s->regs.src_pitch : s->regs.default_pitch; + if (!src_stride) { + qemu_log_mask(LOG_GUEST_ERROR, "Zero source pitch\n"); + return; + } + uint8_t *src_bits = s->vga.vram_ptr + (DEFAULT_CNTL ? + s->regs.src_offset : s->regs.default_offset); + + if (s->dev_id == PCI_DEVICE_ID_ATI_RAGE128_PF) { + src_bits += s->regs.crtc_offset & 0x07ffffff; + src_stride *= bpp; + } + if (src_x > 0x3fff || src_y > 0x3fff || src_bits >= end + || src_bits + src_x + + (src_y + s->regs.dst_height) * src_stride >= end) { + qemu_log_mask(LOG_UNIMP, "blt outside vram not implemented\n"); + return; + } + + 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, + src_x, src_y, dst_x, dst_y, + s->regs.dst_width, s->regs.dst_height); + if (s->regs.dp_cntl & DST_X_LEFT_TO_RIGHT && + s->regs.dp_cntl & DST_Y_TOP_TO_BOTTOM) { + pixman_blt((uint32_t *)src_bits, (uint32_t *)dst_bits, + src_stride, dst_stride, bpp, bpp, + src_x, src_y, dst_x, dst_y, + s->regs.dst_width, s->regs.dst_height); + } else { + /* FIXME: We only really need a temporary if src and dst overlap */ + int llb = s->regs.dst_width * (bpp / 8); + int tmp_stride = DIV_ROUND_UP(llb, sizeof(uint32_t)); + uint32_t *tmp = g_malloc(tmp_stride * sizeof(uint32_t) * + s->regs.dst_height); + pixman_blt((uint32_t *)src_bits, tmp, + src_stride, tmp_stride, bpp, bpp, + src_x, src_y, 0, 0, + s->regs.dst_width, s->regs.dst_height); + pixman_blt(tmp, (uint32_t *)dst_bits, + tmp_stride, dst_stride, bpp, bpp, + 0, 0, dst_x, dst_y, + s->regs.dst_width, s->regs.dst_height); + g_free(tmp); + } + 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 + + dst_y * surface_stride(ds), + s->regs.dst_height * surface_stride(ds)); + } + s->regs.dst_x = (s->regs.dp_cntl & DST_X_LEFT_TO_RIGHT ? + dst_x + s->regs.dst_width : dst_x); + s->regs.dst_y = (s->regs.dp_cntl & DST_Y_TOP_TO_BOTTOM ? + dst_y + s->regs.dst_height : dst_y); + break; + } + case ROP3_PATCOPY: + case ROP3_BLACKNESS: + case ROP3_WHITENESS: + { + uint32_t filler = 0; + + switch (s->regs.dp_mix & GMC_ROP3_MASK) { + case ROP3_PATCOPY: + filler = s->regs.dp_brush_frgd_clr; + break; + case ROP3_BLACKNESS: + filler = 0xffUL << 24 | rgb_to_pixel32(s->vga.palette[0], + s->vga.palette[1], s->vga.palette[2]); + break; + case ROP3_WHITENESS: + filler = 0xffUL << 24 | rgb_to_pixel32(s->vga.palette[3], + s->vga.palette[4], s->vga.palette[5]); + break; + } + + dst_stride /= sizeof(uint32_t); + 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); + 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 + + dst_y * surface_stride(ds), + s->regs.dst_height * surface_stride(ds)); + } + s->regs.dst_y = (s->regs.dp_cntl & DST_Y_TOP_TO_BOTTOM ? + dst_y + s->regs.dst_height : dst_y); + break; + } + default: + qemu_log_mask(LOG_UNIMP, "Unimplemented ati_2d blt op %x\n", + (s->regs.dp_mix & GMC_ROP3_MASK) >> 16); + } +} |