refactoring work to improve issues with new rendering pipeline

app/node/color/opacity/opacity.cpp

@@ -73,7 +73,7 @@ QString OpacityNode::Code(NodeOutput *output)
            "uniform float opacity_in;\n"
            "\n"
            "void main(void) {\n"
-           "  gl_FragColor = tex_in * (opacity_in * 0.01);\n"
+           "  gl_FragColor = texture2D(tex_in, olive_tex_coord) * (opacity_in * 0.01);\n"
            "}\n";
   }
 

app/node/input/media/video/video.cpp

@@ -64,7 +64,7 @@ QString VideoInput::Code(NodeOutput *output)
            "uniform mat4 matrix_in;\n"
            "\n"
            "void main(void) {\n"
-           "  gl_FragColor = texture2D(olive_tex, vec2(vec4(olive_tex_coord, 0.0, 1.0) * matrix_in));\n"
+           "  gl_FragColor = texture2D(footage_in, vec2(vec4(olive_tex_coord, 0.0, 1.0) * matrix_in));\n"
            "}\n";
   }
 

app/node/output.cpp

@@ -34,12 +34,8 @@ NodeParam::Type NodeOutput::type()
 
 QVariant NodeOutput::get_realtime_value()
 {
-  parent()->LockProcessing();
-
   QVariant v = parent()->Value(this);
 
-  parent()->UnlockProcessing();
-
   return v;
 }