Weird matrix multiplication problem …

This topic contains 1 reply, has 2 voices, and was last updated by  Joe Davis 7 years ago.

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    I’m having a strange problem concernong matrix multiplication.

    When doing multiplying ViewProj Matrix with the World Matrix in vertex shader, I have different results on different hardware :

    – works fine on IntelCE4100 and on emulator ( and on desktop, using the same code for OpenGL ).

    – strange behaviour on an omap3530 ( Igepv2 board ).

    When multiplying the matrices on CPU, the render works fine.

    Any idea where it could come from ?


    Joe Davis

    HI Tryum,

    This sounds quite strange, particularly as the CE4100 and the OMAP3530 both have our IP in them. I would hazard a guess that this could be a driver bug, but it’s hard to say without seeing your code. Can you please either post your code here, or send it to so we can take a look at it?



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