devkitPro

elhobbs

The 256_color_bmp example may be a better example to look at. The make file has rules for folders and for files based on extensions. It has rules for processing graphics. I think the rotation example may be older and just references the manually processed graphics.

elhobbs

you may want to take a look at this in an emulator like desmume. It may be something as simple as layer 1 being active/visible and showing garbage. with an emulator you can look at each layer individually.

elhobbs

out of curiosity - can you give a little detail about the context where you are calling these functions? Is this taking place in an interrupt handler do you have any error codes - are you using the default exception handler which would dump the stack and registers?

elhobbs

call swiWaitForVBlank then update your background

elhobbs

you want to update the map and scroll position during vblank. your code waits for vblank after the updating the map and scroll position.

EDIT: of course you are probably going to have issues trying to read that much data from disk during vblank.

elhobbs

Don't forget to flush data cache before dma. You should be able to find an optimized asm memcpy if you search this forum. It seam to remember that it may be best at main to main copies. It may require aligned buffers but so does dma.

elhobbs

not sure if this has already been mentioned, but DMA copies are best for main ram to vram copies. main ram to main ram copies do not perform as well with DMA copies.

elhobbs

Well, that explains everything! It must have been a mistake in the example then - thank you for the fast response! I take it that I can still use commas to separate expressions that I want to use together? Like:

for(i=0;i<5;i++, foo--){...}

Sorry for not checking myself - I'm on mobile so I can't ...

elhobbs

you are not quite right...

for(i=0;i<6;i+2){...}

is not valid

more like this

Code: Select all

for(initialize;condition;evalute after each loop before condition) {
    //do stuff
}

it works like this

Code: Select all

initialize;
while(condition) {
    //do stuff
    evalute after each loop before condition
}

elhobbs

glTexImage2D and glCallList do not take filenames as parameters. where you are specifying filenames they are actually looking for buffers where the data representing the object have been loaded. look at the libfat examples for how to read data from files. of course this assumes that the data in the ...

devkitPro

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