vshader.glsl Example File

#ifdef GL_ES
// Set default precision to medium
precision mediump int;
precision mediump float;

uniform mat4 mvp_matrix;

attribute vec4 a_position;
attribute vec2 a_texcoord;

varying vec2 v_texcoord;

void main()
    // Calculate vertex position in screen space
    gl_Position = mvp_matrix * a_position;

    // Pass texture coordinate to fragment shader
    // Value will be automatically interpolated to fragments inside polygon faces
    v_texcoord = a_texcoord;

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