Post

MY TIME HAS COME #gamedev

IIRC the first device we ran across with this problem was the original Kindle Fires, they could only do 2 texture units at once.

Benjamin Cutler

@uraniumanchor.com

2 Aug

Took me a few days to actually get around to this as I was working on simpler parts of the code, but got it on the second try (got the alpha masks reversed the first time around). #gamedev

Benjamin Cutler

@uraniumanchor.com

For those curious, it's nothing -too- complicated, just two overlaid alpha masks, one top cap and one that repeats for the rest of the vertical space. Then the color map takes the average of two copies of itself, though it uses two sets of coordinates that scroll at different speeds and directions.

2/8/26, 7:22 pm0 reposts1 like

Benjamin Cutler

@uraniumanchor.com

2 Aug

Also, slight addendum to the comment about the original Kindle Fire: It -could- support multitexturing beyond 2 units, but only if you were using shaders. And OpenGLES2 was much like OpenGL's core profile, in that you couldn't mix in fixed-functionality at all...

Benjamin Cutler

@uraniumanchor.com

2 Aug

...which would have meant rewriting thousands of lines of OpenGLES1 code. Which is more or less what I've -been- doing, 14 years later. Except Vulkan instead of OpenGLES2.