justingardner
commented
1 year ago Hi Taosheng. Can you try this code snippet (you need to change the name of the image loaded with imread to one of your images), and see if it replicates the issue you are having?
% open mgl Screen
mglOpen;
% load image im = double(imread('testimage.png'));
% number of textures to create n = 500;
% variables for holding time createAck = zeros(1,n); createProcessed = zeros(1,n);
% create n textures disppercent(-inf,sprintf('Creating %i textures of size: %i, %i, %i',n,size(im,1),size(im,2),size(im,3))); for i = 1:n disppercent(i/n); [t(i) createAck(i) createProcessed(i)]= mglCreateTexture(im); end disppercent(inf);
% plot plot(diff(createAck),'k-.');hold on plot(diff(createProcessed),'k-+');
% variabels for holding itme bltAck = zeros(1,n); bltProcessed = zeros(1,n); flushAck = zeros(1,n); flushProcessed = zeros(1,n);
% blt n textures disppercent(-inf,sprintf('Blt %i textures',n)); for i = 1:n disppercent(i/n); [bltAck(i) bltProcessed(i)] = mglBltTexture(t(i),[rand2-1 rand2-1]); [flushAck(i) flushProcessed(i)] = mglFlush; end disppercent(inf);
% close screen mglClose;
% plot plot(diff(bltAck),'r-.');hold on plot(diff(bltProcessed),'r-+'); plot(diff(flushAck),'g-.');hold on plot(diff(flushProcessed),'g-+'); legend('Create Ack','Create Processed','blt Ack','blt Processed','flush Ack','flush Processed'); xlabel('Texture number') ylabel('Time (ms)')
taosheng-liu
Hi guys, I've been trying to use MGL metal for an experiment that displays images. The images are external files (jpg), they are read in by imread and adjusted (minor things like data type and matrix dimension) and then send to mglCreateTexture. I'm reading in 64 black/white images (1024x768 resolution). However, the program invariably get stuck in this loop of reading in and create texture. Ctrl-C reveals it got stuck at mglCreatTexture/mglMetalCreateTexture. Every time I run it, it got stuck at a different image, and once in a long while (like 1 out 20 tries), the whole thing actually works! When it gets stuck, mglMetal app is using 100% CPU and the memory use is tiny (there is definitely enough memory on my machine to handle 64 small images). So it seems to me that there's something wrong with mglMetalCreateTexture... I'm hoping you guys can help out! I'm happy to give you all the files if you want to try it out.
Some info about my settings: MacOS Monterey, Matlab 2022a. Freshly downloaded mglMetal. I ran mglRunRenderingTests and mglRenderingDemo, everything looks great. Thanks!!
--Taosheng (long time MGL user :-))