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this is very useful

The first number contains the import flags and library version, the second one contains the stub len.

STUB_START module, flags_version, stub_len

That's going to be slower than not using vfpu. It's better you use vfpu there only to calc rsq.

Mipmapping makes the PSP use a lower resolution copy of the image when the surface gets further away. Mipmapping shouldnt do anything on a surface thats close up. This is wrong. Mipmapping is used also when the uvs texture coordinates are closer and does not cover all the texture. Gothi: If you mip...

Your problem is that you have to mipmap your textures

never heard about mipmapping ?

The PSP hardware seems to have a bug where a texture viewed from a particular angle will use larger mipmaps than necessary, which means the appearance will change on screen as view angle changes, and there may be a performance impact.

www.goop.org/psp/gl

hi,
how can i install an exception handler to manage the float overflow to ignore it ?

nope glbegin and glend are emulated and very slow.

http://www.goop.org/psp/gl for more info.

Nope there is no support for glBegin or glEnd in pspgu, but they are implemented on pspgl but they are very slow.

Yes, for mono just give the same sample two times.

glDeleteTextures( int size , int *names ); There is a bug on glDeleteTexture that wasn't freeing the texture from memory, i've fixed it : open glDeleteTexture.c and replace the line 19 with __pspgl_texobj_free(tobj); then recompile pspgl. NOTE: If you don't fix this bug PSPGL won't free the texture.

...

I Suggest you to look at the net/simple example of the sdk.

The media engine cannot be started in USERMODE, what your code does is to start the function start_up in kernel mode, and the main thread in user mode. In the start_up function (that is running in kernel mode) the media engine is started. I've used this trick a long time ago to have the 'home' butto...

mikmod for wav, libmad for mp3, libatrac3plus for at3

"Parity check" in informatic language is used to define the algorithm to check data errors on trasmission between pc and serial ports.

Using 'read' the simplest way is to read each time a char char buffer&#91;max_size&#93;; int offset = 0; char ch; .. if &#40;read&#40;sockfd, &ch, 1&#41; < 0&#41; .. error, close socket .. if &#40;ch == '\n'&#41; &#123; buffer&#91;offset&#93; = 0; offs...

hello,

i'm trying to generate stencil volume shadows but it seems that triangles must be clipped and it will be very slow.

How did you solve this problem ?

yep, srand is much faster

Please :)

using Mersenne Twister for __randf_1, __randf2: inline float __randf_1&#40;&#41; &#123; const int max = 1024; return &#40;float&#41;&#40;sceKernelUtilsMt19937UInt&#40;&ctx&#41;%max&#41;/max; &#125; inline float __randf_2&#40;&#41; &#123; int x ...

float __randf&#40;&#41; &#123; int x = &#40;&#40;&#40;&#40;rand&#40;&#41; << 8&#41; & 0x7FFFFF&#41; | 0x3F800000&#41;&#41;; float r; asm volatile&#40; "move %0, %1\n" &#58; "=e" &#40;r&#41; &#58; "e...

You never have to write an entire application in assembly, use inline assembly: asm ( "istruction 1\n" "istruction 2\n" : gcc output constraints : gcc input constraints ); for example float output, op1, op2; asm ( "mul.s %0, %1, %2\n" : "=f" (output) : "f...

dunno if there is one in the sdk,

float __randf()
{
const int max = 1024;
return (float)(rand()%max)/max;
}

very simple,
note that i've wrote it here and i didn't try it.

measure also this

asm volatile ("mtv %0, s500" : : "r" (input_value);

and this

asm volatile ("mfv %0, s500" : "=r" (input_value);

nice

i wrote this in 2 seconds #include <malloc.h> int __freemem&#40;&#41; &#123; void *ptrs&#91;480&#93;; int mem, x, i; for &#40;x = 0; x < 480; x++&#41; &#123; void *ptr = malloc&#40;51200&#41;; if &#40;!ptr&#41; break; ptrs&#91;x&#93; = ptr; &am...

for now i'm working on something else, i will see for them later.

vsync is automatically enabled in pspgl, if you want to disable it just open the file pspgl_vidmem.c and remove all sceDisplayWaitVblankStart calls and recompile it, you will get a bad flickering effect. if you read buffer from the psp pad make sure to use sceCtrlPeekBufferPositive and not sceCtrlRe...