/**
 * Copyright(c) Live2D Inc. All rights reserved.
 *
 * Use of this source code is governed by the Live2D Open Software license
 * that can be found at https://www.live2d.com/eula/live2d-open-software-license-agreement_en.html.
 */


attribute vec4 a_position;
attribute vec2 a_texCoord;
varying vec2 v_texCoord;
varying vec2 v_blendCoord;
varying vec4 v_clipPos;
uniform mat4 u_matrix;
uniform mat4 u_clipMatrix;

void main()
{
    gl_Position = u_matrix * a_position;

#ifdef CLIPPING_MASK
    v_clipPos = u_clipMatrix * a_position;
#else
    v_clipPos = vec4(0.0);
#endif

    v_texCoord = a_texCoord;
    v_texCoord.y = 1.0 - v_texCoord.y;
    vec2 ndcPos = gl_Position.xy / gl_Position.w;
    v_blendCoord = ndcPos * 0.5 + 0.5;
}