[d3d8] FillVertexShaderInputARBHW wrong color order for D3DCOLOR?

[Christoph Frick]

hiho,

i encountered the following problem with Live For Speed [1]: once i
setup my car and choose a color for it red and blue are swaped. also i
got a FIXME there from: dlls/d3d8/vshaderdeclaration.c:675 (the case for
D3DVSDT_D3DCOLOR).

so i tried various things to put data in the hardware, but none worked -
most of the time the car/game had simply extreme strange colors. so my
approach (the obvious: get data from curPos, honouring skip and put it
in my own 4 byte array, then call the glVertexAttribPointerARB with my
array and skip=0) does not work at all - especially because i really
dont have any clue about vertex shading at all, i guess.

my assumtion: opengl takes for the 4 bytes RGBA->XYZW and D3DCOLOR is
BGRA->XYZW (thats also what the software branch of this method wants).

any ideas?

-- 
cu

[d3d8] FillVertexShaderInputARBHW wrong color order for D3DCOLOR?

[Oliver Stieber]

--- Christoph Frick <frick(a)sc-networks.de> wrote:
> hiho,
>
> i encountered the following problem with Live For Speed [1]: once i
> setup my car and choose a color for it red and blue are swaped. also i
> got a FIXME there from: dlls/d3d8/vshaderdeclaration.c:675 (the case for
> D3DVSDT_D3DCOLOR).
>
> so i tried various things to put data in the hardware, but none worked -
> most of the time the car/game had simply extreme strange colors. so my
> approach (the obvious: get data from curPos, honouring skip and put it
> in my own 4 byte array, then call the glVertexAttribPointerARB with my
> array and skip=0) does not work at all - especially because i really
> dont have any clue about vertex shading at all, i guess.
>
> my assumtion: opengl takes for the 4 bytes RGBA->XYZW and D3DCOLOR is
> BGRA->XYZW (thats also what the software branch of this method wants).
>
> any ideas?

You need to swizel the colour on the outputs of the vertex shader from BGRA to RGBA.

Oliver.
> -- 
> cu
> >

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