+ if(mask&FRAMEBUFFER)
+ {
+ glBindFramebuffer(GL_FRAMEBUFFER, framebuffer ? framebuffer->get_id() : 0);
+ if(framebuffer)
+ {
+ framebuffer->refresh();
+ framebuffer->require_complete();
+ }
+ }
+
+ if(mask&VIEWPORT)
+ {
+ if(viewport)
+ glViewport(viewport->left, viewport->bottom, viewport->width, viewport->height);
+ else if(framebuffer)
+ glViewport(0, 0, framebuffer->get_width(), framebuffer->get_height());
+ }
+
+ if(mask&SCISSOR)
+ {
+ if(scissor)
+ {
+ glEnable(GL_SCISSOR_TEST);
+ glScissor(scissor->left, scissor->bottom, scissor->width, scissor->height);
+ }
+ else
+ glDisable(GL_SCISSOR_TEST);
+ }
+