[3/4] WineD3D: Perform the srgb copy with fbo_blit if possible

[Henri Verbeet]

2009/9/10 Stefan Dösinger <stefan at codeweavers.com>:
> +    if (context->current_fbo) {
> +        context_bind_fbo(context, GL_FRAMEBUFFER_EXT, &context->current_fbo->id);
> +    } else {
> +        context_bind_fbo(context, GL_FRAMEBUFFER_EXT, NULL);
> +    }
This shouldn't be needed.

> +    /* Need FBOs obviously */
> +    if(wined3d_settings.offscreen_rendering_mode != ORM_FBO) return FALSE;
> +    /* Need framebuffer blit */
> +    if(!GL_SUPPORT(EXT_FRAMEBUFFER_BLIT)) return FALSE;
> +    /* Need to be able to attach both RGB and sRGB copy */
> +    if((fmt_flags & attach_flags) != attach_flags) return FALSE;
> +    /* Need to be able to blit from and to my format */
> +    if(!surface_can_stretch_rect(This, This)) return FALSE;
> +    /* Need either RGB or sRGB copy up to date */
> +    if((This->Flags & (SFLAG_INSRGBTEX | SFLAG_INTEXTURE)) == 0) return FALSE;That's redundant,
Some of those are redundant. A format is never FBO attachable if FBOs
are disabled, surface_can_stretch_rect() will already check for
regular attachment.