CydandClaude Opus 4.8
0bb493dd5f
Texturing (validated live -- game-live-textured.png, the ravine's brown dirt terrain): the wire model is Division's intensity+ramp scheme. action 26 uploads 8-bit intensity texels ([node][nbytes][w][h] + rows; type 13 = texture); texmap (12) references the texture; material (11) references its texmap and a ramp (14: lo/hi RGB); texel color = lerp(lo, hi, i/255). The backend bakes RGBA per material, uploads to GL, maps with wire UVs (stride-5: floats 3-4; stride-8/9: floats 6-7). Serial (directserial fork options, tracked in vpx-device/serialport/): - rxpollus:<us> -- receive poll tick (stock 1ms); 100us discovers inbound bytes ~10x sooner. Validated: sim advanced, camera moved with real RIO. - rxburst:<n> -- stock DOSBox re-serializes received bytes at emulated wire speed (~1ms/byte at 9600) though they already paid wire time on the real cable; a 15-byte analog reply gained ~14ms, blowing the RIO's few-ms ACK window and dropping the game into its 15-second retry fallback (L4CTRL.CPP limit=15.0 //0.2). rxburst:16 delivers buffered bytes 16x faster. game_rio.conf: realport:COM1 rxpollus:100 rxburst:16. Crash-on-advance fixed: *_TSHD.BGF terrain shadows live only in arena subdirs the search path misses; null shadow renderable was dereferenced once the sim moved. All 11 copied into VIDEO/GEO in the working image; game now runs sustained (560+ frames, textured, no crash). Details in RIO-NOTES.md. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
82 lines
2.6 KiB
C++
82 lines
2.6 KiB
C++
/*
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* Copyright (C) 2002-2021 The DOSBox Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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// include guard
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#ifndef DOSBOX_DIRECTSERIAL_WIN32_H
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#define DOSBOX_DIRECTSERIAL_WIN32_H
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#include "dosbox.h"
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#if C_DIRECTSERIAL
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#define DIRECTSERIAL_AVAILIBLE
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#include "serialport.h"
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#include "libserial.h"
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class CDirectSerial : public CSerial {
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public:
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CDirectSerial(Bitu id, CommandLine* cmd);
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~CDirectSerial();
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void updatePortConfig(uint16_t divider, uint8_t lcr) override;
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void updateMSR() override;
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void transmitByte(uint8_t val, bool first) override;
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void setBreak(bool value) override;
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void setRTSDTR(bool rts, bool dtr) override;
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void setRTS(bool val) override;
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void setDTR(bool val) override;
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void handleUpperEvent(uint16_t type) override;
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private:
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COMPORT comport;
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Bitu rx_state = 0;
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#define D_RX_IDLE 0
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#define D_RX_WAIT 1
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#define D_RX_BLOCKED 2
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#define D_RX_FASTWAIT 3
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Bitu rx_retry; // counter of retries (every millisecond)
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Bitu rx_retry_max; // how many POLL_EVENTS to wait before causing
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// an overrun error.
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// Host-port receive polling tick in milliseconds (default 1.0).
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// Latency-critical hardware (VWE RIO cockpit board: drops comms when an
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// ACK is late by a few ms) needs incoming bytes discovered faster than
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// the stock 1ms tick; configurable via "rxpollus:<microseconds>".
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float rx_poll_ms = 1.0f;
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// Burst-delivery divisor ("rxburst:<n>"). Stock DOSBox re-serializes
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// received bytes at emulated wire speed (bytetime per byte) even though
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// they already paid their wire time on the physical cable and are
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// sitting in the host buffer. n>1 delivers buffered bytes n times
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// faster, cutting multi-byte reply latency (RIO analog packets).
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float rx_burst_div = 1.0f;
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bool doReceive();
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#if SERIAL_DEBUG
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bool dbgmsg_poll_block = false;
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bool dbgmsg_rx_block = false;
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#endif
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};
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#endif // C_DIRECTSERIAL
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#endif // include guard
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