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Set an error message when SDL_GL_SetAttribute() fails because we can'…

…t support

 the attribute on X11.
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icculus committed Aug 6, 2007
1 parent 77bebaa commit b20ee01837e8fb11027c3fa8834c8803dec93d87
Showing with 11 additions and 6 deletions.
  1. +11 −6 src/video/x11/SDL_x11gl.c
@@ -338,7 +338,8 @@ int X11_GL_MakeCurrent(_THIS)
/* Get attribute data from glX. */
int X11_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value)
{
int retval;
int retval = -1;
int unsupported = 0;
int glx_attrib = None;

switch( attrib ) {
@@ -398,23 +399,27 @@ int X11_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value)
}
return retval;
} else {
return(-1);
unsupported = 1;
}
break;
case SDL_GL_SWAP_CONTROL:
if ( this->gl_data->glXGetSwapIntervalMESA ) {
*value = this->gl_data->glXGetSwapIntervalMESA();
return(0);
} else {
return(-1);
unsupported = 1;
}
break;
default:
return(-1);
unsupported = 1;
break;
}

retval = this->gl_data->glXGetConfig(GFX_Display, glx_visualinfo, glx_attrib, value);

if (unsupported) {
SDL_SetError("OpenGL attribute is unsupported on this system");
} else {
retval = this->gl_data->glXGetConfig(GFX_Display, glx_visualinfo, glx_attrib, value);
}
return retval;
}

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