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Topic: alphaimages too slow? (Read 1364 times) |
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levinbeicht
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alphaimages too slow?
« on: Apr 7th, 2005, 11:17am » |
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Hi!
I'm trying to code a smooth side-scrolling game and for that I have 3 background images (BGraphics) the largest sized at 3200 * 240 pixels. The sketch is sized 640*240.
In setup() i apply an Alpha-Layer to them (also BGraphics) so i can draw them over each other.
In loop() i draw these images on the screen using image():
Code:
image(background03, 0 , 0, width - 1, height - 1, xpos, 0, xpos + width - 1, height - 1);
image(background02, 0 , 0, width - 1, height - 1, xpos * 2, 0, xpos * 2 + width - 1, height - 1);
image(background01, 0 , 0, width - 1, height - 1, xpos * 4, 0, xpos * 4 + width - 1, height - 1);
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where xpos is the position of the player.
but drawing these images kills the performance. (and by kill i mean i get about 10 fps on my 3ghz p4 with nothing on the screen but these 3 images).
First i thought the images i used were too big, so i scaled them down, but this did nothing to the performance.
Anybody has any ideas how to speed things up a little?
I mean it should be possible to draw more than 3 images a frame, so what am i doing wrong?
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