port: if three-point filtering is enabled, don't also enable bilinear filtering

port/fast3d/gfx_opengl.cpp

@@ -724,6 +724,8 @@ static void gfx_opengl_set_sampler_parameters(int tile, bool linear_filter, uint
 	};
 
 	mipmaps = mipmaps && (current_mipmap_filter_mode != MIPMAP_DISABLED);
+	if (linear_filter && current_filter_mode == FILTER_THREE_POINT)
+		linear_filter = false;
 	const int mip_idx = mipmaps ? current_mipmap_filter_mode : 0;
 	const GLint min_filter = linear_filter ? min_filters[current_filter_mode][mip_idx] : GL_NEAREST;
 	const GLint max_filter = linear_filter && (current_filter_mode != FILTER_NONE) ? GL_LINEAR : GL_NEAREST;