GLES2 refactors

This commit unhacks some parts of the 3D rendering.

Most notably:

 - possibility to use negative texture units
   (no longer weird manual index allocation for user samplers)

 - refactoring of light code, now sorts in a different way,
   should yield better performance

 - fixes a crash while saving (because of "Illegal instruction" execution)
   when using a decent compiler (clang, it's clang. Thanks GCC for not telling me about UB).

1 files changed, 14 insertions, 2 deletions

diff --git a/drivers/gles2/rasterizer_scene_gles2.h b/drivers/gles2/rasterizer_scene_gles2.h
index 0ce7e9ae97..f47d1f1d4e 100644
--- a/drivers/gles2/rasterizer_scene_gles2.h
+++ b/drivers/gles2/rasterizer_scene_gles2.h
@@ -545,11 +545,23 @@ public:
 	void _add_geometry_with_material(RasterizerStorageGLES2::Geometry *p_geometry, InstanceBase *p_instance, RasterizerStorageGLES2::GeometryOwner *p_owner, RasterizerStorageGLES2::Material *p_material, bool p_depth_pass, bool p_shadow_pass);
 
 	void _fill_render_list(InstanceBase **p_cull_result, int p_cull_count, bool p_depth_pass, bool p_shadow_pass);
-	void _render_render_list(RenderList::Element **p_elements, int p_element_count, const RID *p_light_cull_result, int p_light_cull_count, const Transform &p_view_transform, const CameraMatrix &p_projection, RID p_shadow_atlas, Environment *p_env, GLuint p_base_env, float p_shadow_bias, float p_shadow_normal_bias, bool p_reverse_cull, bool p_alpha_pass, bool p_shadow, bool p_directional_add, bool p_directional_shadows);
+	void _render_render_list(RenderList::Element **p_elements, int p_element_count,
+			const RID *p_directional_lights, int p_directional_light_count,
+			const Transform &p_view_transform,
+			const CameraMatrix &p_projection,
+			RID p_shadow_atlas,
+			Environment *p_env,
+			GLuint p_base_env,
+			float p_shadow_bias,
+			float p_shadow_normal_bias,
+			bool p_reverse_cull,
+			bool p_alpha_pass,
+			bool p_shadow,
+			bool p_directional_add);
 
 	void _draw_sky(RasterizerStorageGLES2::Sky *p_sky, const CameraMatrix &p_projection, const Transform &p_transform, bool p_vflip, float p_custom_fov, float p_energy);
 
-	void _setup_material(RasterizerStorageGLES2::Material *p_material, bool p_use_radiance_map, bool p_reverse_cull, bool p_shadow_atlas = false, bool p_skeleton_tex = false, Size2i p_skeleton_tex_size = Size2i(0, 0));
+	void _setup_material(RasterizerStorageGLES2::Material *p_material, bool p_reverse_cull, Size2i p_skeleton_tex_size = Size2i(0, 0));
 	void _setup_geometry(RenderList::Element *p_element, RasterizerStorageGLES2::Skeleton *p_skeleton);
 	void _render_geometry(RenderList::Element *p_element);