Scott Duensing
5527130145
Add wdrvScreenshot() to capture the screen to PNG via stb_image_write.h, reading the framebuffer (or DDI bitmap fallback) and VGA DAC palette. Convert demo.c to non-interactive mode with automatic screenshots after each demo (DEMO01-15.PNG) and no keypress waits, plus per-driver DOSBox-X configs for automated testing. Set a standard Windows 3.1 256-color palette (8R x 8G x 4B color cube with 20 static system colors) to ensure consistent output across drivers. Fix wdrvSetPalette to also program the VGA DAC directly, since VBESVGA's SetPalette DDI updates its internal color table but not the hardware. Detect DAC width via VBE 4F08 (S3TRIO=6-bit, VBESVGA=8-bit) and use correct shift in both DAC writes and reads — fixes dark display on VBESVGA where 6-bit values in 8-bit DAC produced 1/4 brightness. Fix S3 dispYOffset: extend PDEVICE deHeight by the offset so the driver's internal clipping allows the full 600-row logical screen, rather than incorrectly reducing dpVertRes to 590. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
37 lines
577 B
Text
37 lines
577 B
Text
# DOSBox-X config for VBESVGA.DRV testing
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[sdl]
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output = surface
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windowresolution = 1024x768
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[dosbox]
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machine = svga_s3trio64
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memsize = 64
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quit warning = false
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[cpu]
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core = normal
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cputype = pentium
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cycles = max
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[render]
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aspect = true
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scaler = none
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[video]
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vmemsize = 8
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vmemsizekb = 0
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vesa oldvbe = false
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vesa oldvbe10 = false
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[dos]
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umb = true
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xms = true
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ems = true
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[autoexec]
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@echo off
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mount c /home/scott/claude/windriver
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c:
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cd bin
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DEMO.EXE VBESVGA.DRV
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exit
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