Fix show mask image size bug

components/renderers/cpp/src/CUDARender.cpp

@@ -642,6 +642,7 @@ void CUDARender::_renderPass2(Channels<0> chans, const Eigen::Matrix4d &t) {
 
 	// Reprojection of colours onto surface
 	auto main_channel = (scene_->frames[0].hasChannel(Channel::ColourHighRes)) ? Channel::ColourHighRes : Channel::Colour;
+	LOG(INFO) << "USING COLOR: " << (int)main_channel;
 	_renderChannel(*out_, main_channel, Channel::Colour, t, stream_);
 
 

components/renderers/cpp/src/mask.cu

@@ -15,7 +15,10 @@ __global__ void show_mask_kernel(
 	const int y = blockIdx.y*blockDim.y + threadIdx.y;
 
 	if (x >= 0 && x < colour.width() && y >=0 && y < colour.height()) {
-        Mask m(mask.tex2D(x,y));
+        float xscale = (float)x * ((float)mask.width() / (float)colour.width());
+        float yscale = (float)y * ((float)mask.height() / (float)colour.height());
+
+        Mask m(mask.tex2D((int)xscale,(int)yscale));
 
         if (m.is(id)) {
             colour(x,y) = style;