Forums | NoesisGUI

        private void InitializeComponent()
        {
            GUI.LoadComponent(this, "Assets/User Interface/Controls/Render Control/RenderControl.xaml");
            FrameworkElement root = this.Content as FrameworkElement;
            _RenderRectangle = root.FindName("_RenderRectangle") as Rectangle;

            _OffscreenCameraGameObject = this.FindInactiveGameObject("Offscreen Camera");
            _Camera = _OffscreenCameraGameObject.GetComponent<Camera>();

            // create render texture
            _RenderTexture = new RenderTexture((int)_Dimensions.x, (int)_Dimensions.y, 1, RenderTextureFormat.Default);
            RenderTexture.active = _RenderTexture;

            // create Noesis texture
            _RenderTexture.Create();
            NoesisTexture noesisTexture = NoesisTexture.WrapTexture(_RenderTexture, _RenderTexture.GetNativeTexturePtr(),
                _RenderTexture.width, _RenderTexture.height, 1);

            // create brush to store render texture and assign it to the rectangle
            _RenderRectangle.Fill = new ImageBrush()
            {
                ImageSource = new TextureSource(noesisTexture),
                Stretch = Stretch.None,
                Opacity = 1.0f
            };
        }

    private void OnPostprocessTexture(Texture2D texture)
    {
        if (AssetDatabase.GetLabels(assetImporter).Contains("Noesis"))
        {
            Color[] c = texture.GetPixels(0);

            // NoesisGUI needs premultipled alpha
            for (int i = 0; i < c.Length; i++)
            {
                c[i].r = c[i].r * c[i].a;
                c[i].g = c[i].g * c[i].a;
                c[i].b = c[i].b * c[i].a;
            }

            // Set new content and make the texture unreadable at runtime
            texture.SetPixels(c, 0);
            texture.Apply(true, true);
        }
    }

Shader "Noesis/Alpha Blended Premultiply" {
	Properties{
		_MainTex("RenderTexture", 2D) = "black" {}
	}

		Category{
			//Tags { "Queue" = "Transparent" "IgnoreProjector" = "True" "RenderType" = "Transparent" }
			
			//Blend SrcAlpha OneMinusSrcAlpha // traditional transparency blending
			//Blend One OneMinusSrcAlpha // premultiplied alpha transpanrecy blending
		
			//ColorMask RGB
			
			Cull Off 
		    Lighting Off 
		    ZWrite Off 
		    Fog { Mode Off }

			SubShader {
				Pass {

					CGPROGRAM
					#pragma vertex vert
					#pragma fragment frag
					#include "UnityCG.cginc"

					sampler2D _MainTex;

					struct appdata_t {
						float4 vertex : POSITION;
						float2 texcoord : TEXCOORD0;
					};

					struct v2f {
						float4 vertex : SV_POSITION;
						float2 texcoord : TEXCOORD0;
					};

					float4 _MainTex_ST;

					v2f vert(appdata_t v)
					{
						v2f o;
						o.vertex = UnityObjectToClipPos(v.vertex);
						o.texcoord = TRANSFORM_TEX(v.texcoord,_MainTex);
						return o;
					}

					fixed4 frag(v2f i) : SV_Target
					{
						fixed4 c = tex2D(_MainTex, i.texcoord);
						c.r *= c.a;
						c.g *= c.a;
						c.b *= c.a;
				
						return c;
					}
					ENDCG
				}
			}
		}
}