vertexShaderSource property

@override String vertexShaderSource

Implementation

@override
String get vertexShaderSource => '''

  uniform mat4 uProjectionMatrix;
  attribute vec2 aVertexPosition;
  attribute vec2 aVertexTextCoord;
  attribute float aVertexAlpha;
  varying vec2 vTextCoord;
  varying float vAlpha;

  void main() {
    vTextCoord = aVertexTextCoord;
    vAlpha = aVertexAlpha;
    gl_Position = vec4(aVertexPosition, 0.0, 1.0) * uProjectionMatrix;
  }
  ''';