vertex_shader property
Implementation
final vertex_shader = """
#version 300 es
precision mediump float;
in vec4 Position;
in vec2 TextureCoords;
out vec2 TextureCoordsVarying;
uniform mat4 matrix;
void main (void) {
gl_Position = matrix * Position;
TextureCoordsVarying = TextureCoords;
}
""";