RGBA vs ARGB

[numberZero]

Irrlicht color formats are similar to OpenGL ones, but don’t match exactly. Here is a comparison (for a little-endian machine):

(numbers are bit positions, 0 is the least-significant bit).

This mismatch is annoying and bug-prone. I suggest moving to OpenGL native formats. I have no roadmap, though.

P.S. On a big-endian machine, it looks a bit differently.

[numberZero]

Note that it does convert colors into format OpenGL expects, or finds a weird OpenGL format (like GL_BGRA, GL_UNSIGNED_SHORT_1_5_5_5_REV) that matches its own. The latter is not possible on ES, however, and the former is apparently impossible for vertex buffers... thus this:

#ifdef GL_ES
	vec4 color = inVertexColor.bgra;
#else
	vec4 color = inVertexColor;
#endif