Hi, I'm hoping to experiment drawing to a 3D Texture sampler (or others!) using a compute shader.
I'm hitting a bit of a roadblock & I'm not sure where the problem is. Some info:
- The 3d tex is valid, & the compute shader is compiling
- I'm on windows so OpenGL 4.2 + for imagestore is accessible
- I've enabled opengl 4.3 in my app
Unfortunately what I'm hitting, is I cant seem to figure out how to send my tex to the shader as a uniform for the usage of imageStore - as an image3d or image2d uniform type. I'm always hitting the following:
error: cinder::gl::typeToBytes Unknown gl type constant 0x904d
error: cinder::gl::GlslProg::CheckUniformType unknown uniform type
Warning: cinder::gl::GlslProg::logUniformWrongType Uniform type mismatch for "img_output", expected 0x904d and received (uint32_t)
& on draw:
error: cinder::gl::GlslProg::CheckUniformType unknown uniform type etc
My basic compute shader section looks like this:
GLuint tex_id = 32;
& my compute shader right now is this
#version 430 compatibility
layout(r8) uniform image3D destTex;
ivec3 storePos = ivec3(gl_GlobalInvocationID.xyz);
imageStore(destTex, storePos, vec4(3.0/255.0));
I've tried the same with a 2D image too (uniform image2D destTex) with the same errors.
If anyone has any advice or pointers it'd be greatly appreciated!