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You can also use it to do fullscreen effects by creating a clut for whatever the effect is, then shifting/masking and blending for each color. FuncLib has a module for effects like this, so you can check that out if you want.

sceGuDepthMask(GU_TRUE);
/* ... */
sceGuDepthMask(GU_FALSE);

Edit: Oops, don't mind me. Guess I don't know much about libm's naming scheme (generally when I see "log" I assume log10). Sorry! log(x) = log10(x) = log2(x)/log2(10); this is what the code is doing, so there's no problem here. That's what the revised code I posted does, the one in the li...

You need to draw the image, then print the text. What you are doing now is not the proper way to use a background. What you need to do is load your image, then start a game/display loop. In the loop you process whatever needs to be processed, then draw whatever needs to be drawn in the order it need...

_.-noel-._ wrote:But when I Start my programm, the LCD is black.

Probably because you have an endless loop that never swaps draw buffers.

It isn't supposed to play anything. It only decodes it. Getting it to play is up to you.

I was having the same problem. I put pspSdkInetInit in my user thread (instead of the kernel thread) and it worked.

I don't know if you meant to do this or what, but vfpu_logf is actually natural log... Here's log: float vfpu_log(float x) { float result; __asm__ volatile ( "mtv %1, S000\n" "vcst.s S001, VFPU_LOG2TEN\n" "vrcp.s S001, S001\n" "vlog...

Great lib, but there's a problem with vfpu_atan2f. An x and y of zero will cause a crash (divide by zero). Most libraries I've seen return 0 when this is encountered, easy fix.