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Jim

Well that number is 80010002 in hex (use Windows calculator in Programmer mode to work it out), you can search for that with psp to find out your problem.

Jim

Jim

z-values of the faces of two close objects are different on the 8th or tenth diget after the dot (0.000000001)... does GU can't handle this Of course not, that's 1 part in a billion, the zbuffer is only 16bits, less than one part in 100,000. You need to spread your minz to maxz range across the 16 ...

Jim

You need to be registered with Sony. It's not free or freely available.

Jim

Jim

It looks like all your post transform z values are really, really close together, causing a lack of precision in the z buffer. If they have enough precision before transformation i.e.your model isn't stupid, then use the z component of the matrix to stop all the zs landing on top of each other.

Jim

Jim

I think you want to set the depth range to be smaller so that the precision of the zbuffer is spread over the range of zs that you actually use. I'm not sure how that gu call affects the rendering, but if setting the range much smaller doesn't help, then you can always fix the view matrices to scale...

Jim

You can probably do something like that, but I don't know how.
Can I ask why you want that? It doesn't seem all that useful. The callback for the analog joystick sounds like a bad requirement - how far should the nub move before you get a callback, for instance.

Jim

Jim

That's pretty much what sceCtrlReadBuffer() does. It reads the keys and then reschedules your thread to run at the next vblank.
so just

Code: Select all

do&#123;
sceCtrlReadBuffer&#40;...&#41;;
//i get here once per vblank
...
&#125; while &#40;!exit_program&#41;;

does what you want.

Jim

Jim

For drawing in the windows I have thought about making "drawing" and "reading" buffers, Right, double buffering is another excellent way of reducing the amount of locking. There are proper sce calls for semaphores in the pspsdk, or else there's a port of pthreads for PSP in svn....

Jim

You probably want to split your code up better. Sounds right now like the drawing and updating and input are all mixed together. It would be better if you had a data structure for your windows - for simplicity's sake let's say it was just a linked list of id,x,y,width,height of each window. Then you...

Jim

Does adding a sleep to the loop help? You'll need to yield to the other threads or the watchdog will reset the psp.

Jim

Jim

Pull the wires off?
Jim

Jim

My question is, how can I link the PSPSDK libraries against programs compiled to run in Linux? In general, you can't. Most Linux source code/programs are not immediately suitable for compilation/execution on PSP. Usually there's at least a little bit, and often quite a lot of work needs to be done....

Jim

Look up Cooperative Multitasking. When a thread is running, nothing else[1] can run When a thread sleeps, it's put on a queue for its priority level with a restart time of now+sleep time, and the next queued highest priority thread that is ready to run is restarted. Every thread must play this game ...

Jim

That would draw it in solid black, yes.

Jim

Jim

You need to disable the blending before you draw the line sceGuDisable(GU_BLEND), or make sure you are setting the alpha to 1.

For the second question - yes, provided you sceGuGetMemory enough space.

Jim

Jim

If the lights are not dynamic and your objects are tessellated well then you can bake the shadows into the vertex lighting.

Jim

Jim

sizeof(*folder->bank_dir->dis_dir)

calculates the size of the thing pointed to by dis_dir, which is a char, therefore it always returns 1. sizeof knows nothing about malloc.

Jim

Jim

Originally, graphics support was limited to framebuffer access only (no access to the PlayStation 3's graphics chip RSX yet), some access to the RSX graphics chip was achieved however Sony blocked this with firmware release 2.10.

Jim

Unfortunately you're pretty much stuffed. The very best you can hope for is assembler code annotated with any debug symbols that happen to be in your .o files.

Jim

Jim

Just use & to mask out the buttons you don't care about.
Jim

Jim

You can already play all your PS1 games on PS2, so what are you asking?

Jim

Jim

Someone might be able to help you, but can I ask why you would need such a huge stack and whether it might be possible to rethink your algorithm, either to do a recursive job in an iterative way or to use the heap instead?

Jim

Jim

That would be a glaring fuck up of a C compiler if it didn't do that.
Jim

Jim

Your problem description sounds like a cache problem. Don't you need to flush the dcache between setting the vertices and passing them to the sce functions?

Jim

Jim

Code: Select all

struct rayDelta &#123; 
   long rayDeltaX, rayDeltaY; 
&#125; ; 
...
rayDelta preDelta&#91;480&#93;;

For the second time, how is this going to even compile?

Jim

Jim

Say you wanted to render an object on a reflective floor.

You would draw object A with CCW, then negate the Y axis in your model view, then draw object A with CW.

Jim

Jim

I think the original problem was you were using cached addresses for the screen and never flushing the dcache.

Jim

Jim

That or memory corruption.

Jim

Jim

Code: Select all

         jyyy= pad.Ly - 130; 
         if &#40;jyyy<0&#41; &#123;jyyy = fabs&#40;jyyy&#41;;&#125; else &#123;jyyy = 0 - jyyy;&#125;

Instead of this, write

Code: Select all

         jyyy = 130-pad.Ly;

Jim

Jim

This is gonna crash if xxx is 0. Why not use atan2?

Jim

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