fix gr_skydome 0

ugh...

src/hardware/hw_main.c

@@ -794,6 +794,9 @@ static void HWR_RenderViewpoint(player_t *player, boolean drawSkyTexture, boolea
 	gl_portal_array_t *portal_array;
 
 	HWR_PrepareTransform(player, is_skybox);
+	// we need to set our transformations now so portal clipping
+	// has the projectionmatrix set up with our actual view
+	// since our clipper uses this to determine our actual visible geometry
 	GL_SetTransform(&atransform);
 	HWR_ClearSprites();
 	HWR_ResetClipper();

src/hardware/hw_sky.c

@@ -222,6 +222,7 @@ void HWR_DrawSkyBackground(player_t *player)
 		float angleturn;
 
 		HWR_GetTexture(texturetranslation[skytexture], false);
+
 		aspectratio = (float)vid.width/(float)vid.height;
 
 		//Hurdler: the sky is the only texture who need 4.0f instead of 1.0
@@ -293,6 +294,8 @@ void HWR_DrawSkyBackground(player_t *player)
 			v[0].t = v[1].t -= ((float) angle / angleturn);
 		}
 
+		// since sky is drawn as a "flat quad" this way, we have to unset any view transformations for it to work
+		GL_SetTransform(NULL);
 		GL_UnSetShader();
 		GL_DrawPolygon(NULL, v, 4, 0);
 	}