Which combination for uvec2 fragment shader output

Question

I've been trying to output into GL_COLOR_ATTACHMENT1 unsigned values R and G. The texture is set with these format / internal format / type :

GL_RG / GL_RG8UI / GL_UNSIGNED_INT

I also tried with GL_UNSIGNED_BYTE , it results the same issue: incomplete framebuffer.

I output in fragment shader that way:

layout (location = 0) vec3 nofrag;
layout (location = 1) uvec2 matfrag;

Any idea? I thought GL_UNSIGNED_INT_8_8_8_8 would have been better: well it's definitely not…

Answer 1

Solved! Thank you, glYoda! Here's the solution:

GL_RG_INTEGER / GL_RG8UI / GL_UNSIGNED_BYTE

I think GL_UNSIGNED_INT is nice too, but since GL* 8 *UINT, BYTE is far away better.