engine/src/core-effects/Common/MatDefs/Post/Post.vert

uniform mat4 g_WorldViewProjectionMatrix;

attribute vec4 inPosition;
attribute vec2 inTexCoord;
varying vec2 texCoord;

void main() {  
    gl_Position = inPosition * 2.0 - 1.0; //vec4(pos, 0.0, 1.0);
    texCoord = inTexCoord;
}