WriteLUTPixelArray() doesn't work

softwarefailure · 07 February 2020, 20:55

When using Picasso96 on WinUAE, WriteLUTPixelArray() (a Cybergraphics API) always seems to return -1 and doesn't draw anything. Is this a problem in Picasso96 itself or in WinUAE's Picasso96 driver?

Toni Wilen · 08 February 2020, 11:31

I don't know (as usual, neither Cybergraphics nor Picasso96 sources are available)

You can try testing if same happens when using native emulated graphics board (for example Picasso II or IV) and Picasso96.

EDIT: Attach example binary (preferably one that does not do nothing else) and I'll check if uaegfx driver gets called.

softwarefailure · 21 February 2020, 15:48

This turned out to be a bug in the Cybergraphics SDK. In the SAS/C pragmas the LVO for WriteLUTPixelArray() was specified as c0 but it was c6 instead so a wrong function got called. After fixing those pragmas WriteLUTPixelArray() is working nicely on WinUAE now.

07 February 2020, 20:55	#1
softwarefailure Registered User Join Date: Mar 2016 Location: Germany Posts: 77	WriteLUTPixelArray() doesn't work When using Picasso96 on WinUAE, WriteLUTPixelArray() (a Cybergraphics API) always seems to return -1 and doesn't draw anything. Is this a problem in Picasso96 itself or in WinUAE's Picasso96 driver?

08 February 2020, 11:31	#2
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,506	I don't know (as usual, neither Cybergraphics nor Picasso96 sources are available) You can try testing if same happens when using native emulated graphics board (for example Picasso II or IV) and Picasso96. EDIT: Attach example binary (preferably one that does not do nothing else) and I'll check if uaegfx driver gets called. Last edited by Toni Wilen; 08 February 2020 at 11:40.

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21 February 2020, 15:48	#3
softwarefailure Registered User Join Date: Mar 2016 Location: Germany Posts: 77	This turned out to be a bug in the Cybergraphics SDK. In the SAS/C pragmas the LVO for WriteLUTPixelArray() was specified as c0 but it was c6 instead so a wrong function got called. After fixing those pragmas WriteLUTPixelArray() is working nicely on WinUAE now.

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