536 lines
20 KiB
C
536 lines
20 KiB
C
/*
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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*
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* This file is part of the 86Box distribution.
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*
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* 3DFX Voodoo emulation.
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*
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*
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*
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* Authors: Sarah Walker, <https://pcem-emulator.co.uk/>
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*
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* Copyright 2008-2020 Sarah Walker.
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*/
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <wchar.h>
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#include <math.h>
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#define HAVE_STDARG_H
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#include <86box/86box.h>
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#include "cpu.h"
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#include <86box/machine.h>
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#include <86box/device.h>
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#include <86box/mem.h>
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#include <86box/pci.h>
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#include <86box/timer.h>
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#include <86box/device.h>
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#include <86box/plat.h>
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#include <86box/thread.h>
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#include <86box/video.h>
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#include <86box/vid_svga.h>
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#include <86box/vid_voodoo_common.h>
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#include <86box/vid_voodoo_blitter.h>
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#include <86box/vid_voodoo_dither.h>
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#include <86box/vid_voodoo_regs.h>
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#include <86box/vid_voodoo_render.h>
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enum {
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BLIT_COMMAND_SCREEN_TO_SCREEN = 0,
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BLIT_COMMAND_CPU_TO_SCREEN = 1,
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BLIT_COMMAND_RECT_FILL = 2,
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BLIT_COMMAND_SGRAM_FILL = 3
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};
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enum {
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BLIT_SRC_1BPP = (0 << 3),
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BLIT_SRC_1BPP_BYTE_PACKED = (1 << 3),
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BLIT_SRC_16BPP = (2 << 3),
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BLIT_SRC_24BPP = (3 << 3),
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BLIT_SRC_24BPP_DITHER_2X2 = (4 << 3),
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BLIT_SRC_24BPP_DITHER_4X4 = (5 << 3)
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};
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enum {
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BLIT_SRC_RGB_ARGB = (0 << 6),
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BLIT_SRC_RGB_ABGR = (1 << 6),
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BLIT_SRC_RGB_RGBA = (2 << 6),
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BLIT_SRC_RGB_BGRA = (3 << 6)
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};
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enum {
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BLIT_COMMAND_MASK = 7,
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BLIT_SRC_FORMAT = (7 << 3),
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BLIT_SRC_RGB_FORMAT = (3 << 6),
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BLIT_SRC_CHROMA = (1 << 10),
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BLIT_DST_CHROMA = (1 << 12),
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BLIT_CLIPPING_ENABLED = (1 << 16)
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};
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enum {
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BLIT_ROP_DST_PASS = (1 << 0),
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BLIT_ROP_SRC_PASS = (1 << 1)
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};
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#ifdef ENABLE_VOODOOBLT_LOG
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int voodooblt_do_log = ENABLE_VOODOOBLT_LOG;
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static void
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voodooblt_log(const char *fmt, ...)
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{
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va_list ap;
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if (voodooblt_do_log) {
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va_start(ap, fmt);
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pclog_ex(fmt, ap);
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va_end(ap);
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}
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}
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#else
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# define voodooblt_log(fmt, ...)
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#endif
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#define MIX(src_dat, dst_dat, rop) \
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switch (rop) { \
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case 0x0: \
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dst_dat = 0; \
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break; \
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case 0x1: \
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dst_dat = ~(src_dat | dst_dat); \
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break; \
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case 0x2: \
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dst_dat = ~src_dat & dst_dat; \
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break; \
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case 0x3: \
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dst_dat = ~src_dat; \
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break; \
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case 0x4: \
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dst_dat = src_dat & ~dst_dat; \
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break; \
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case 0x5: \
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dst_dat = ~dst_dat; \
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break; \
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case 0x6: \
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dst_dat = src_dat ^ dst_dat; \
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break; \
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case 0x7: \
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dst_dat = ~(src_dat & dst_dat); \
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break; \
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case 0x8: \
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dst_dat = src_dat & dst_dat; \
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break; \
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case 0x9: \
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dst_dat = ~(src_dat ^ dst_dat); \
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break; \
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case 0xa: \
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dst_dat = dst_dat; \
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break; \
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case 0xb: \
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dst_dat = ~src_dat | dst_dat; \
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break; \
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case 0xc: \
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dst_dat = src_dat; \
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break; \
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case 0xd: \
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dst_dat = src_dat | ~dst_dat; \
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break; \
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case 0xe: \
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dst_dat = src_dat | dst_dat; \
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break; \
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case 0xf: \
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dst_dat = 0xffff; \
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break; \
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}
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void
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voodoo_v2_blit_start(voodoo_t *voodoo)
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{
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uint64_t dat64;
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int size_x = ABS(voodoo->bltSizeX);
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int size_y = ABS(voodoo->bltSizeY);
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int x_dir = (voodoo->bltSizeX > 0) ? 1 : -1;
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int y_dir = (voodoo->bltSizeY > 0) ? 1 : -1;
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int dst_x;
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int src_y = voodoo->bltSrcY & 0x7ff;
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int dst_y = voodoo->bltDstY & 0x7ff;
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int src_stride = (voodoo->bltCommand & BLTCMD_SRC_TILED) ? ((voodoo->bltSrcXYStride & 0x3f) * 32 * 2) : (voodoo->bltSrcXYStride & 0xff8);
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int dst_stride = (voodoo->bltCommand & BLTCMD_DST_TILED) ? ((voodoo->bltDstXYStride & 0x3f) * 32 * 2) : (voodoo->bltDstXYStride & 0xff8);
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uint32_t src_base_addr = (voodoo->bltCommand & BLTCMD_SRC_TILED) ? ((voodoo->bltSrcBaseAddr & 0x3ff) << 12) : (voodoo->bltSrcBaseAddr & 0x3ffff8);
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uint32_t dst_base_addr = (voodoo->bltCommand & BLTCMD_DST_TILED) ? ((voodoo->bltDstBaseAddr & 0x3ff) << 12) : (voodoo->bltDstBaseAddr & 0x3ffff8);
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#if 0
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voodooblt_log("blit_start: command=%08x srcX=%i srcY=%i dstX=%i dstY=%i sizeX=%i sizeY=%i color=%04x,%04x\n",
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voodoo->bltCommand, voodoo->bltSrcX, voodoo->bltSrcY, voodoo->bltDstX, voodoo->bltDstY, voodoo->bltSizeX, voodoo->bltSizeY, voodoo->bltColorFg, voodoo->bltColorBg);
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#endif
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voodoo_wait_for_render_thread_idle(voodoo);
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switch (voodoo->bltCommand & BLIT_COMMAND_MASK) {
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case BLIT_COMMAND_SCREEN_TO_SCREEN:
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for (int y = 0; y <= size_y; y++) {
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const uint16_t *src = (uint16_t *) &voodoo->fb_mem[src_base_addr + src_y * src_stride];
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uint16_t *dst = (uint16_t *) &voodoo->fb_mem[dst_base_addr + dst_y * dst_stride];
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int src_x = voodoo->bltSrcX;
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int dst_x = voodoo->bltDstX;
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for (int x = 0; x <= size_x; x++) {
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uint16_t src_dat = src[src_x];
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uint16_t dst_dat = dst[dst_x];
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int rop = 0;
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if (voodoo->bltCommand & BLIT_CLIPPING_ENABLED) {
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if (dst_x < voodoo->bltClipLeft || dst_x >= voodoo->bltClipRight || dst_y < voodoo->bltClipLowY || dst_y >= voodoo->bltClipHighY)
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goto skip_pixel_blit;
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}
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if (voodoo->bltCommand & BLIT_SRC_CHROMA) {
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int r = (src_dat >> 11);
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int g = (src_dat >> 5) & 0x3f;
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int b = src_dat & 0x1f;
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if (r >= voodoo->bltSrcChromaMinR && r <= voodoo->bltSrcChromaMaxR && g >= voodoo->bltSrcChromaMinG && g <= voodoo->bltSrcChromaMaxG && b >= voodoo->bltSrcChromaMinB && b <= voodoo->bltSrcChromaMaxB)
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rop |= BLIT_ROP_SRC_PASS;
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}
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if (voodoo->bltCommand & BLIT_DST_CHROMA) {
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int r = (dst_dat >> 11);
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int g = (dst_dat >> 5) & 0x3f;
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int b = dst_dat & 0x1f;
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if (r >= voodoo->bltDstChromaMinR && r <= voodoo->bltDstChromaMaxR && g >= voodoo->bltDstChromaMinG && g <= voodoo->bltDstChromaMaxG && b >= voodoo->bltDstChromaMinB && b <= voodoo->bltDstChromaMaxB)
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rop |= BLIT_ROP_DST_PASS;
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}
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MIX(src_dat, dst_dat, voodoo->bltRop[rop]);
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dst[dst_x] = dst_dat;
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skip_pixel_blit:
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src_x += x_dir;
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dst_x += x_dir;
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}
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src_y += y_dir;
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dst_y += y_dir;
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}
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break;
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case BLIT_COMMAND_CPU_TO_SCREEN:
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voodoo->blt.dst_x = voodoo->bltDstX;
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voodoo->blt.dst_y = voodoo->bltDstY;
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voodoo->blt.cur_x = 0;
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voodoo->blt.size_x = size_x;
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voodoo->blt.size_y = size_y;
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voodoo->blt.x_dir = x_dir;
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voodoo->blt.y_dir = y_dir;
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voodoo->blt.dst_stride = (voodoo->bltCommand & BLTCMD_DST_TILED) ? ((voodoo->bltDstXYStride & 0x3f) * 32 * 2) : (voodoo->bltDstXYStride & 0xff8);
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break;
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case BLIT_COMMAND_RECT_FILL:
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for (int y = 0; y <= size_y; y++) {
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uint16_t *dst;
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int dst_x = voodoo->bltDstX;
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if (SLI_ENABLED) {
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if ((!(voodoo->initEnable & INITENABLE_SLI_MASTER_SLAVE) && (voodoo->blt.dst_y & 1)) || ((voodoo->initEnable & INITENABLE_SLI_MASTER_SLAVE) && !(voodoo->blt.dst_y & 1)))
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goto skip_line_fill;
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dst = (uint16_t *) &voodoo->fb_mem[dst_base_addr + (dst_y >> 1) * dst_stride];
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} else
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dst = (uint16_t *) &voodoo->fb_mem[dst_base_addr + dst_y * dst_stride];
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for (int x = 0; x <= size_x; x++) {
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if (voodoo->bltCommand & BLIT_CLIPPING_ENABLED) {
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if (dst_x < voodoo->bltClipLeft || dst_x >= voodoo->bltClipRight || dst_y < voodoo->bltClipLowY || dst_y >= voodoo->bltClipHighY)
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goto skip_pixel_fill;
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}
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dst[dst_x] = voodoo->bltColorFg;
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skip_pixel_fill:
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dst_x += x_dir;
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}
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skip_line_fill:
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dst_y += y_dir;
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}
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break;
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case BLIT_COMMAND_SGRAM_FILL:
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/*32x32 tiles - 2kb*/
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dst_y = voodoo->bltDstY & 0x3ff;
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size_x = voodoo->bltSizeX & 0x1ff; // 512*8 = 4kb
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size_y = voodoo->bltSizeY & 0x3ff;
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dat64 = voodoo->bltColorFg | ((uint64_t) voodoo->bltColorFg << 16) | ((uint64_t) voodoo->bltColorFg << 32) | ((uint64_t) voodoo->bltColorFg << 48);
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for (int y = 0; y <= size_y; y++) {
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uint64_t *dst;
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/*This may be wrong*/
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if (!y) {
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dst_x = voodoo->bltDstX & 0x1ff;
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size_x = 511 - dst_x;
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} else if (y < size_y) {
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dst_x = 0;
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size_x = 511;
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} else {
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dst_x = 0;
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size_x = voodoo->bltSizeX & 0x1ff;
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}
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dst = (uint64_t *) &voodoo->fb_mem[(dst_y * 512 * 8 + dst_x * 8) & voodoo->fb_mask];
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for (int x = 0; x <= size_x; x++)
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dst[x] = dat64;
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dst_y++;
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}
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break;
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default:
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fatal("bad blit command %08x\n", voodoo->bltCommand);
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}
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}
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void
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voodoo_v2_blit_data(voodoo_t *voodoo, uint32_t data)
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{
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int src_bits = 32;
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uint32_t base_addr = (voodoo->bltCommand & BLTCMD_DST_TILED) ? ((voodoo->bltDstBaseAddr & 0x3ff) << 12) : (voodoo->bltDstBaseAddr & 0x3ffff8);
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uint32_t addr;
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uint16_t *dst;
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if ((voodoo->bltCommand & BLIT_COMMAND_MASK) != BLIT_COMMAND_CPU_TO_SCREEN)
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return;
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if (SLI_ENABLED) {
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addr = base_addr + (voodoo->blt.dst_y >> 1) * voodoo->blt.dst_stride;
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dst = (uint16_t *) &voodoo->fb_mem[addr];
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} else {
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addr = base_addr + voodoo->blt.dst_y * voodoo->blt.dst_stride;
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dst = (uint16_t *) &voodoo->fb_mem[addr];
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}
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if (addr >= voodoo->front_offset && voodoo->row_width) {
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int y = (addr - voodoo->front_offset) / voodoo->row_width;
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if (y < voodoo->v_disp)
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voodoo->dirty_line[y] = 2;
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}
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while (src_bits && voodoo->blt.cur_x <= voodoo->blt.size_x) {
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int r = 0;
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int g = 0;
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int b = 0;
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uint16_t src_dat = 0;
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uint16_t dst_dat;
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int x = (voodoo->blt.x_dir > 0) ? (voodoo->blt.dst_x + voodoo->blt.cur_x) : (voodoo->blt.dst_x - voodoo->blt.cur_x);
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int rop = 0;
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switch (voodoo->bltCommand & BLIT_SRC_FORMAT) {
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case BLIT_SRC_1BPP:
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case BLIT_SRC_1BPP_BYTE_PACKED:
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src_dat = (data & 1) ? voodoo->bltColorFg : voodoo->bltColorBg;
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data >>= 1;
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src_bits--;
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break;
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case BLIT_SRC_16BPP:
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switch (voodoo->bltCommand & BLIT_SRC_RGB_FORMAT) {
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case BLIT_SRC_RGB_ARGB:
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case BLIT_SRC_RGB_RGBA:
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src_dat = data & 0xffff;
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break;
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case BLIT_SRC_RGB_ABGR:
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case BLIT_SRC_RGB_BGRA:
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src_dat = ((data & 0xf800) >> 11) | (data & 0x07c0) | ((data & 0x0038) << 11);
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break;
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default:
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break;
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}
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data >>= 16;
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src_bits -= 16;
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break;
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case BLIT_SRC_24BPP:
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case BLIT_SRC_24BPP_DITHER_2X2:
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case BLIT_SRC_24BPP_DITHER_4X4:
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switch (voodoo->bltCommand & BLIT_SRC_RGB_FORMAT) {
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case BLIT_SRC_RGB_ARGB:
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r = (data >> 16) & 0xff;
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g = (data >> 8) & 0xff;
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b = data & 0xff;
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break;
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case BLIT_SRC_RGB_ABGR:
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r = data & 0xff;
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g = (data >> 8) & 0xff;
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b = (data >> 16) & 0xff;
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break;
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case BLIT_SRC_RGB_RGBA:
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r = (data >> 24) & 0xff;
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g = (data >> 16) & 0xff;
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b = (data >> 8) & 0xff;
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break;
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case BLIT_SRC_RGB_BGRA:
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r = (data >> 8) & 0xff;
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g = (data >> 16) & 0xff;
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b = (data >> 24) & 0xff;
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break;
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default:
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break;
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}
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switch (voodoo->bltCommand & BLIT_SRC_FORMAT) {
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case BLIT_SRC_24BPP:
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src_dat = (b >> 3) | ((g & 0xfc) << 3) | ((r & 0xf8) << 8);
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break;
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case BLIT_SRC_24BPP_DITHER_2X2:
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r = dither_rb2x2[r][voodoo->blt.dst_y & 1][x & 1];
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g = dither_g2x2[g][voodoo->blt.dst_y & 1][x & 1];
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b = dither_rb2x2[b][voodoo->blt.dst_y & 1][x & 1];
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src_dat = (b >> 3) | ((g & 0xfc) << 3) | ((r & 0xf8) << 8);
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break;
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case BLIT_SRC_24BPP_DITHER_4X4:
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r = dither_rb[r][voodoo->blt.dst_y & 3][x & 3];
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g = dither_g[g][voodoo->blt.dst_y & 3][x & 3];
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b = dither_rb[b][voodoo->blt.dst_y & 3][x & 3];
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src_dat = (b >> 3) | ((g & 0xfc) << 3) | ((r & 0xf8) << 8);
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break;
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default:
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break;
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}
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src_bits = 0;
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break;
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default:
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break;
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}
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if (SLI_ENABLED) {
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if ((!(voodoo->initEnable & INITENABLE_SLI_MASTER_SLAVE) && (voodoo->blt.dst_y & 1)) || ((voodoo->initEnable & INITENABLE_SLI_MASTER_SLAVE) && !(voodoo->blt.dst_y & 1)))
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goto skip_pixel;
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}
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if (voodoo->bltCommand & BLIT_CLIPPING_ENABLED) {
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if (x < voodoo->bltClipLeft || x >= voodoo->bltClipRight || voodoo->blt.dst_y < voodoo->bltClipLowY || voodoo->blt.dst_y >= voodoo->bltClipHighY)
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goto skip_pixel;
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}
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dst_dat = dst[x];
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if (voodoo->bltCommand & BLIT_SRC_CHROMA) {
|
|
r = (src_dat >> 11);
|
|
g = (src_dat >> 5) & 0x3f;
|
|
b = src_dat & 0x1f;
|
|
|
|
if (r >= voodoo->bltSrcChromaMinR && r <= voodoo->bltSrcChromaMaxR && g >= voodoo->bltSrcChromaMinG && g <= voodoo->bltSrcChromaMaxG && b >= voodoo->bltSrcChromaMinB && b <= voodoo->bltSrcChromaMaxB)
|
|
rop |= BLIT_ROP_SRC_PASS;
|
|
}
|
|
if (voodoo->bltCommand & BLIT_DST_CHROMA) {
|
|
r = (dst_dat >> 11);
|
|
g = (dst_dat >> 5) & 0x3f;
|
|
b = dst_dat & 0x1f;
|
|
|
|
if (r >= voodoo->bltDstChromaMinR && r <= voodoo->bltDstChromaMaxR && g >= voodoo->bltDstChromaMinG && g <= voodoo->bltDstChromaMaxG && b >= voodoo->bltDstChromaMinB && b <= voodoo->bltDstChromaMaxB)
|
|
rop |= BLIT_ROP_DST_PASS;
|
|
}
|
|
|
|
MIX(src_dat, dst_dat, voodoo->bltRop[rop]);
|
|
|
|
dst[x] = dst_dat;
|
|
|
|
skip_pixel:
|
|
voodoo->blt.cur_x++;
|
|
}
|
|
|
|
if (voodoo->blt.cur_x > voodoo->blt.size_x) {
|
|
voodoo->blt.size_y--;
|
|
if (voodoo->blt.size_y >= 0) {
|
|
voodoo->blt.cur_x = 0;
|
|
voodoo->blt.dst_y += voodoo->blt.y_dir;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
voodoo_fastfill(voodoo_t *voodoo, voodoo_params_t *params)
|
|
{
|
|
int y;
|
|
int low_y;
|
|
int high_y;
|
|
|
|
if (params->fbzMode & (1 << 17)) {
|
|
int y_origin = (voodoo->type >= VOODOO_BANSHEE) ? (voodoo->y_origin_swap + 1) : voodoo->v_disp;
|
|
|
|
high_y = y_origin - params->clipLowY;
|
|
low_y = y_origin - params->clipHighY;
|
|
} else {
|
|
low_y = params->clipLowY;
|
|
high_y = params->clipHighY;
|
|
}
|
|
|
|
if (params->fbzMode & FBZ_RGB_WMASK) {
|
|
int r;
|
|
int g;
|
|
int b;
|
|
uint16_t col;
|
|
|
|
r = ((params->color1 >> 16) >> 3) & 0x1f;
|
|
g = ((params->color1 >> 8) >> 2) & 0x3f;
|
|
b = (params->color1 >> 3) & 0x1f;
|
|
col = b | (g << 5) | (r << 11);
|
|
|
|
if (SLI_ENABLED) {
|
|
for (y = low_y; y < high_y; y += 2) {
|
|
uint16_t *cbuf = (uint16_t *) &voodoo->fb_mem[(params->draw_offset + (y >> 1) * voodoo->row_width) & voodoo->fb_mask];
|
|
|
|
for (int x = params->clipLeft; x < params->clipRight; x++)
|
|
cbuf[x] = col;
|
|
}
|
|
} else {
|
|
for (y = low_y; y < high_y; y++) {
|
|
if (voodoo->col_tiled) {
|
|
uint16_t *cbuf = (uint16_t *) &voodoo->fb_mem[(params->draw_offset + (y >> 5) * voodoo->row_width + (y & 31) * 128) & voodoo->fb_mask];
|
|
|
|
for (int x = params->clipLeft; x < params->clipRight; x++) {
|
|
int x2 = (x & 63) | ((x >> 6) * 128 * 32 / 2);
|
|
cbuf[x2] = col;
|
|
}
|
|
} else {
|
|
uint16_t *cbuf = (uint16_t *) &voodoo->fb_mem[(params->draw_offset + y * voodoo->row_width) & voodoo->fb_mask];
|
|
|
|
for (int x = params->clipLeft; x < params->clipRight; x++)
|
|
cbuf[x] = col;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (params->fbzMode & FBZ_DEPTH_WMASK) {
|
|
if (SLI_ENABLED) {
|
|
for (y = low_y; y < high_y; y += 2) {
|
|
uint16_t *abuf = (uint16_t *) &voodoo->fb_mem[(params->aux_offset + (y >> 1) * voodoo->row_width) & voodoo->fb_mask];
|
|
|
|
for (int x = params->clipLeft; x < params->clipRight; x++)
|
|
abuf[x] = params->zaColor & 0xffff;
|
|
}
|
|
} else {
|
|
for (y = low_y; y < high_y; y++) {
|
|
if (voodoo->aux_tiled) {
|
|
uint16_t *abuf = (uint16_t *) &voodoo->fb_mem[(params->aux_offset + (y >> 5) * voodoo->aux_row_width + (y & 31) * 128) & voodoo->fb_mask];
|
|
|
|
for (int x = params->clipLeft; x < params->clipRight; x++) {
|
|
int x2 = (x & 63) | ((x >> 6) * 128 * 32 / 2);
|
|
abuf[x2] = params->zaColor & 0xffff;
|
|
}
|
|
} else {
|
|
uint16_t *abuf = (uint16_t *) &voodoo->fb_mem[(params->aux_offset + y * voodoo->aux_row_width) & voodoo->fb_mask];
|
|
|
|
for (int x = params->clipLeft; x < params->clipRight; x++)
|
|
abuf[x] = params->zaColor & 0xffff;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|