Saving an OpenGL PGraphics results in a black image #6094
Description
This looks a lot like #4578 except that it still happens with DISABLE_ASYNC_SAVEFRAME. The workaround to get a PImage first doesn't work, either -- but I can still draw it to the main canvas!
(This does work with a Java2D PGraphics.)
Code to reproduce:
private PGraphics pg;
public void settings() {
size(400, 400, P2D);
}
public void setup() {
pg = createGraphics(200, 200, P2D);
pg.hint(PConstants.DISABLE_ASYNC_SAVEFRAME);
}
public void draw() {
pg.beginDraw();
pg.fill(0, 100, 100);
pg.rect(0,0, pg.width,pg.height);
pg.endDraw();
// this works
image(pg, 0,0);
// this doesn't work (saves completely black image)
pg.save("C:\\temp\\foo.png");
// this doesn't work either
PImage pi = pg.get();
pi.save("C:\\temp\\foo.png");
noLoop();
}