vram setup and texture U/V origin point

Graphic based area of development (Graphics Processing Unit), including the Geometry Transform Engine (GTE), TIM, STR (MDEC), etc.
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ericde45
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vram setup and texture U/V origin point

Post by ericde45 » March 8th, 2025, 1:05 am

hello,

i am trying to make a simple 2D setup
2 framebuffers, that are 256+16 pixels width each
so my textures reference must be in 544,0 instead of 512,0

how can i change the origin X/Y of the texture zone/memory read when using U/V values in commands ?

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nocash
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Post by nocash » March 8th, 2025, 5:56 am

That is called Texture page.
I don't remember if you can set it to 544, otherwise just use 512 and 32 to the texture coordinates themselves.
There is also that Texture window feature to add/mask bits within the texture coordinates.

ericde45
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Post by ericde45 » March 8th, 2025, 6:05 am

i will dig that, thanks.

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