How many textures can sent to a shader?

[Twinkletoes]

In the R-Pi GPU, how many textures can be pushed into a single render pass with a GLES2 shader?

And can I do a texture lookup in a vertex shader?

[paddyg]

There's a memory or size limit which is probably a more real limit, what do you want to do that would need more than a handful of textures (for one shader). For sampler lookups there are certainly texture2DLod, texture2DProjLod etc see http://www.khronos.org/opengles/sdk/doc ... e-card.pdf

[PeterO]

ISTR that glGet for GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS returns 8 (the minimum allowable value for standard compliance)..

See glGet on http://www.khronos.org/opengles/sdk/docs/man/

PeterO