/// <summary>
/// Constructor
/// </summary>
/// <param name="shader"></param>
/// <param name="textureId"></param>
public ShaderPass(WebGlShader shader, string textureId = "tDiffuse")
{
this.TextureId = textureId;
this.Uniforms = (Uniforms)UniformsUtils.Clone(shader.Uniforms);
this.Material = new ShaderMaterial()
{
Uniforms = this.Uniforms,
VertexShader = shader.VertexShader,
FragmentShader = shader.FragmentShader
};
this.RenderToScreen = false;
this.Enabled = true;
this.NeedsSwap = true;
this.Clear = false;
this.camera = new OrthographicCamera(-1, 1, 1, -1, 0, 1);
this.scene = new Scene();
this.quad = new Mesh(new PlaneBufferGeometry(2, 2), null);
this.scene.Add(this.quad);
}
/// <summary>
/// Constructor
/// </summary>
public CopyShader()
{
#region construct uniform variables
this.Uniforms =
UniformsUtils.Merge(new List <Uniforms>
{
new Uniforms {
{ "tDiffuse", new Uniform()
{
{ "type", "t" }, { "value", null }
} }
},
new Uniforms {
{ "opacity", new Uniform()
{
{ "type", "f" }, { "value", 1.0f }
} }
}
});
#endregion
#region construct VertexShader
var vs = new List <string>();
vs.Add("varying vec2 vUv;");
vs.Add("void main() {");
vs.Add("vUv = uv;");
vs.Add("gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );");
vs.Add("}");
// join
this.VertexShader = String.Join("\n", vs).Trim();
#endregion
#region construct FragmentShader
var fs = new List <string>();
fs.Add("uniform float opacity;");
fs.Add("uniform sampler2D tDiffuse;");
fs.Add("varying vec2 vUv;");
fs.Add("void main() {");
fs.Add("vec4 texel = texture2D( tDiffuse, vUv );");
fs.Add("gl_FragColor = opacity * texel;");
fs.Add("}");
// join
this.FragmentShader = String.Join("\n", fs).Trim();
#endregion
}
/// <summary>
/// Constructor
/// </summary>
public RGBShiftShader()
{
#region construct uniform variables
this.Uniforms =
UniformsUtils.Merge(new List <Uniforms>
{
new Uniforms {
{ "tDiffuse", new Uniform()
{
{ "type", "t" }, { "value", null }
} }
},
new Uniforms {
{ "amount", new Uniform()
{
{ "type", "f" }, { "value", 0.005f }
} }
},
new Uniforms {
{ "angle", new Uniform()
{
{ "type", "f" }, { "value", 1.0f }
} }
}
});
#endregion
#region construct VertexShader
var vs = new List <string>();
vs.Add("varying vec2 vUv;");
vs.Add("void main() {");
vs.Add("vUv = uv;");
vs.Add("gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );");
vs.Add("}");
// join
this.VertexShader = String.Join("\n", vs).Trim();
#endregion
#region construct FragmentShader
var fs = new List <string>();
fs.Add("uniform sampler2D tDiffuse;");
fs.Add("uniform float amount;");
fs.Add("uniform float angle;");
fs.Add("varying vec2 vUv;");
fs.Add("void main() {");
fs.Add("vec2 offset = amount * vec2( cos(angle), sin(angle));");
fs.Add("vec4 cr = texture2D(tDiffuse, vUv + offset);");
fs.Add("vec4 cga = texture2D(tDiffuse, vUv);");
fs.Add("vec4 cb = texture2D(tDiffuse, vUv - offset);");
fs.Add("gl_FragColor = vec4(cr.r, cga.g, cb.b, cga.a);");
fs.Add("}");
// join
this.FragmentShader = String.Join("\n", fs).Trim();
#endregion
}
/// <summary>
/// Constructor
/// </summary>
public DotScreenShader()
{
#region construct uniform variables
this.Uniforms =
UniformsUtils.Merge(new List <Uniforms>
{
new Uniforms {
{ "tDiffuse", new Uniform()
{
{ "type", "t" }, { "value", null }
} }
},
new Uniforms {
{ "tSize", new Uniform()
{
{ "type", "v2" }, { "value", new Vector2(256, 256) }
} }
},
new Uniforms {
{ "center", new Uniform()
{
{ "type", "v2" }, { "value", new Vector2(0.5f, 0.5f) }
} }
},
new Uniforms {
{ "angle", new Uniform()
{
{ "type", "f" }, { "value", 1.57f }
} }
},
new Uniforms {
{ "scale", new Uniform()
{
{ "type", "f" }, { "value", 1.0f }
} }
}
});
#endregion
#region construct VertexShader
var vs = new List <string>();
vs.Add("varying vec2 vUv;");
vs.Add("void main() {");
vs.Add("vUv = uv;");
vs.Add("gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );");
vs.Add("}");
// join
this.VertexShader = String.Join("\n", vs).Trim();
#endregion
#region construct FragmentShader
var fs = new List <string>();
fs.Add("uniform vec2 center;");
fs.Add("uniform float angle;");
fs.Add("uniform float scale;");
fs.Add("uniform vec2 tSize;");
fs.Add("uniform sampler2D tDiffuse;");
fs.Add("varying vec2 vUv;");
fs.Add("float pattern() {");
fs.Add("float s = sin( angle ), c = cos( angle );");
fs.Add("vec2 tex = vUv * tSize - center;");
fs.Add("vec2 point = vec2( c * tex.x - s * tex.y, s * tex.x + c * tex.y ) * scale;");
fs.Add("return ( sin( point.x ) * sin( point.y ) ) * 4.0;");
fs.Add("}");
fs.Add("void main() {");
fs.Add("vec4 color = texture2D( tDiffuse, vUv );");
fs.Add("float average = ( color.r + color.g + color.b ) / 3.0;");
fs.Add("gl_FragColor = vec4( vec3( average * 10.0 - 5.0 + pattern() ), color.a );");
fs.Add("}");
// join
this.FragmentShader = String.Join("\n", fs).Trim();
#endregion
}
