#13 thickLineRGBA unexpected result

[Anonymous]

Hello,
I am sorry, but I can't find the version of gfx. I instated it today on the default deposit of fedora 17.

I think that this is a bug :
When I swap the coordinate of x1,y1 with x2,y2 in parameters of thickLineRGBA, I don't get the same result.

Here is a test that show my point :

void test(){
SDL_Init( SDL_INIT_VIDEO );
SDL_Surface* screen = SDL_SetVideoMode( 400,400, 32,
SDL_HWSURFACE | SDL_DOUBLEBUF );
thickLineRGBA(screen,
80,80,
0,0,
2, 255,255,255,255);
thickLineRGBA(screen,
0,0,
80,80,
2,255,255,255,255);
SDL_Flip(screen);
while(1);
SDL_Quit();
}

As you can see I the attachment, I get tow different lines.

[Anonymous]

I expected the tow line to be the same

[ferzkopp]

No repro.

Test sources t.c:

#include "SDL.h"
#include "SDL_gfxPrimitives.h"
void main(){
int i = 0;
SDL_Init( SDL_INIT_VIDEO );
SDL_Surface* screen = SDL_SetVideoMode( 400,400, 32,
SDL_HWSURFACE | SDL_DOUBLEBUF );
while(i<10) {
i++;
thickLineRGBA(screen,
80,80,
0,0,
2, 255,0,255,255);
SDL_Flip(screen);
SDL_Delay(500);
thickLineRGBA(screen,
0,0,
80,80,
2,0,255,255,255);
SDL_Flip(screen);
SDL_Delay(500);
}
SDL_Quit();
}

Compiled with:
~/Sources/sdlgfx/Test$ gcc -I/usr/local/include/SDL -o t t. -Wl,-rpath -Wl,/usr/local/lib -L/usr/local/lib /usr/local/lib/libSDL_gfx.so /usr/local/lib/libSDL.so -lm -ldl -lpthread