External Texture Rendering on Android

Unity Engine
,
1

Hey all,

I am trying to render a GL_TEXTURE_EXTERNAL_OES in Unity. The shader is compiling properly, but all I get is a black screen on device. I create the texture and hook it up properly on the Java side, send that over to Unity and do:

m_currentTexture = Texture2D.CreateExternalTexture(1080, 1920, TextureFormat.RGB24, true, true, new System.IntPtr(webviewTextureReference));
GetComponent<Renderer>().material.SetTexture("_MainTex", m_currentTexture);

My shader looks like:

Shader "Unlit/ViewTextureShader"
{
    Properties
    {
        _MainTex("Texture", 2D) = "white" {}
    }
        SubShader
    {
        Tags { "RenderType" = "Opaque" }
        LOD 100
        Pass
        {
            GLSLPROGRAM

            #ifdef VERTEX

            out vec2 textureCoordinates;

            void main()
            {
                gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
                textureCoordinates = gl_MultiTexCoord0.xy;
            }
            #endif

            #ifdef FRAGMENT
            #extension GL_OES_EGL_image_external_essl3 : require
            uniform samplerExternalOES _MainTex;
            in vec2 textureCoordinates;
            void main()
            {
                gl_FragColor = texture2D(_MainTex, textureCoordinates);
            }
            #endif
            ENDGLSL
        }
    }
}
2

You can use this plugin