I have a uniform buffer defined in glsl as follows
layout (binding = 2, std140) uniform matrixBuffer
and I create a uniform buffer by doing the following (id is a valid value, 7 in my case)
glBufferData(GL_UNIFORM_BUFFER, 256, null,GL_DYNAMIC_DRAW);
glBindBufferBase(GL_UNIFORM_BUFFER, 2, id);
and update it by doing (again id is the value used in initialisation)
glBufferSubData(GL_UNIFORM_BUFFER, 0, data);
When I use the below to check the contents of the uniform buffer the contents are correct.
But the shader doesn’t seem see the updated values, when I look in renderdoc the values are all 0 (and nothing is displayed). The vertex / index data looks good in renderdoc but glPosition is wrong
vec4 position = vec4(inVertex.x,inVertex.y,inVertex.z,1.0);
gl_Position = modelViewProjectionMatrix * position;
Can anyone help debug whats wrong or where to look for issues?