小编Luk*_*zný的帖子

我想将相机预览SurfaceTexture与一些叠加纹理混合.我正在使用这些着色器进行处理:

    private final String vss = "attribute vec2 vPosition;\n"
        + "attribute vec2 vTexCoord;\n"
        + "varying vec2 texCoord;\n"
        + "void main() {\n" 
        + "  texCoord = vTexCoord;\n"
        + "  gl_Position = vec4 ( vPosition.x, vPosition.y, 0.0, 1.0 );\n"
        + "}";

private final String fss = "#extension GL_OES_EGL_image_external : require\n"
        + "precision mediump float;\n"
        + "uniform samplerExternalOES sTexture;\n"
        + "uniform sampler2D filterTexture;\n"
        + "varying vec2 texCoord;\n"
        + "void main() {\n"
        +"  vec4 t_camera = texture2D(sTexture,texCoord);\n"
        //+"  vec4 t_overlayer = texture2D(filterTexture, texCoord);\n" 
        //+ …