diff --git a/CMakeLists.txt b/CMakeLists.txt
index d87f1d47..2534c64a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -49,6 +49,7 @@ file(GLOB HEADERS "*.h"
 "simulation/*.h"
 "scene/*.h"
 "rendering/*.h"
+"rendering/opengl46/*.h"
 "audio/*.h"
 "environment/*.h"
 "application/*.h"
@@ -327,13 +328,13 @@ endif()
 
 if (WITH_OPENGL_MODERN)
         set(SOURCES ${SOURCES}
-            "rendering/opengl33geometrybank.cpp"
-            "rendering/opengl33light.cpp"
-            "rendering/opengl33skydome.cpp"
-            "rendering/opengl33precipitation.cpp"
-            "rendering/opengl33particles.cpp"
-            "rendering/opengl33terrain.cpp"
-            "rendering/opengl33renderer.cpp")
+            "rendering/opengl46/opengl46geometrybank.cpp"
+            "rendering/opengl46/opengl46light.cpp"
+            "rendering/opengl46/opengl46skydome.cpp"
+            "rendering/opengl46/opengl46precipitation.cpp"
+            "rendering/opengl46/opengl46particles.cpp"
+            "rendering/opengl46/opengl46terrain.cpp"
+            "rendering/opengl46/opengl46renderer.cpp")
 		set(DEFINITIONS ${DEFINITIONS} "WITH_OPENGL_MODERN")
 endif()
 
diff --git a/environment/sky.h b/environment/sky.h
index 94f3245f..da3f6c5a 100644
--- a/environment/sky.h
+++ b/environment/sky.h
@@ -14,7 +14,7 @@ http://mozilla.org/MPL/2.0/.
 
 class TSky {
 
-    friend opengl33_renderer;
+    friend opengl46_renderer;
 
 public:
     TSky() = default;
diff --git a/environment/stars.h b/environment/stars.h
index 393b3f6c..807af037 100644
--- a/environment/stars.h
+++ b/environment/stars.h
@@ -8,7 +8,7 @@
 
 class cStars {
 
-    friend opengl33_renderer;
+    friend opengl46_renderer;
 
 public:
 // types:
diff --git a/model/AnimModel.h b/model/AnimModel.h
index fdec3cff..859c3f38 100644
--- a/model/AnimModel.h
+++ b/model/AnimModel.h
@@ -107,7 +107,7 @@ class TAnimContainer : public std::enable_shared_from_this<TAnimContainer>
 // opakowanie modelu, określające stan egzemplarza
 class TAnimModel : public scene::basic_node {
 
-    friend opengl33_renderer;
+    friend opengl46_renderer;
     friend itemproperties_panel;
 
 public:
diff --git a/model/Model3d.h b/model/Model3d.h
index 6ee06a32..cd472b69 100644
--- a/model/Model3d.h
+++ b/model/Model3d.h
@@ -56,7 +56,7 @@ class TSubModel
 { // klasa submodelu - pojedyncza siatka, punkt świetlny albo grupa punktów
     //m7todo: zrobić normalną serializację
 
-    friend opengl33_renderer;
+    friend opengl46_renderer;
     friend TModel3d; // temporary workaround. TODO: clean up class content/hierarchy
     friend TDynamicObject; // temporary etc
     friend scene::shape_node; // temporary etc
@@ -267,7 +267,7 @@ public:
 
 class TModel3d
 {
-    friend opengl33_renderer;
+    friend opengl46_renderer;
 
 public:
     // submodels which scenery instances of the model refer to by name
diff --git a/rendering/opengl33geometrybank.cpp b/rendering/opengl46/opengl46geometrybank.cpp
similarity index 95%
rename from rendering/opengl33geometrybank.cpp
rename to rendering/opengl46/opengl46geometrybank.cpp
index f2843fea..63ed4751 100644
--- a/rendering/opengl33geometrybank.cpp
+++ b/rendering/opengl46/opengl46geometrybank.cpp
@@ -8,7 +8,7 @@ http://mozilla.org/MPL/2.0/.
 */
 
 #include "stdafx.h"
-#include "rendering/opengl33geometrybank.h"
+#include "rendering/opengl46/opengl46geometrybank.h"
 
 #include "utilities/Logs.h"
 
@@ -18,7 +18,7 @@ namespace gfx {
 
 // create() subclass details
 void
-opengl33_vaogeometrybank::create_( gfx::geometry_handle const &Geometry ) {
+opengl46_vaogeometrybank::create_( gfx::geometry_handle const &Geometry ) {
     // adding a chunk means we'll be (re)building the buffer, which will fill the chunk records, amongst other things.
     // thus we don't need to initialize the values here
     m_chunkrecords.emplace_back( chunk_record() );
@@ -28,7 +28,7 @@ opengl33_vaogeometrybank::create_( gfx::geometry_handle const &Geometry ) {
 
 // replace() subclass details
 void
-opengl33_vaogeometrybank::replace_( gfx::geometry_handle const &Geometry ) {
+opengl46_vaogeometrybank::replace_( gfx::geometry_handle const &Geometry ) {
 
     auto &chunkrecord = m_chunkrecords[ Geometry.chunk - 1 ];
     chunkrecord.is_good = false;
@@ -41,7 +41,7 @@ opengl33_vaogeometrybank::replace_( gfx::geometry_handle const &Geometry ) {
     }
 }
 
-void opengl33_vaogeometrybank::setup_buffer()
+void opengl46_vaogeometrybank::setup_buffer()
 {
     if( m_vertexbuffer ) { return; }
     // if there's no buffer, we'll have to make one
@@ -106,7 +106,7 @@ void opengl33_vaogeometrybank::setup_buffer()
 }
 
 void
-opengl33_vaogeometrybank::setup_attrib(size_t offset)
+opengl46_vaogeometrybank::setup_attrib(size_t offset)
 {
     m_vao->setup_attrib( *m_vertexbuffer, 0, 3, GL_FLOAT, sizeof( basic_vertex ), offsetof(basic_vertex, position) + offset * sizeof( basic_vertex ) );
     // NOTE: normal and color streams share the data
@@ -115,7 +115,7 @@ opengl33_vaogeometrybank::setup_attrib(size_t offset)
 	m_vao->setup_attrib( *m_vertexbuffer, 3, 4, GL_FLOAT, sizeof( basic_vertex ), offsetof(basic_vertex, tangent) + offset * sizeof( basic_vertex ) );
 }
 
-void opengl33_vaogeometrybank::setup_userdata(size_t offset) {
+void opengl46_vaogeometrybank::setup_userdata(size_t offset) {
 	const size_t offset_evaluated = m_vertex_count * sizeof(basic_vertex) + offset * sizeof( vertex_userdata );
 	m_vao->setup_attrib( *m_vertexbuffer, 4, 4, GL_FLOAT, sizeof( vertex_userdata ), offsetof(vertex_userdata, data) + offset_evaluated );}
 
@@ -123,7 +123,7 @@ void opengl33_vaogeometrybank::setup_userdata(size_t offset) {
 // NOTE: units and stream parameters are unused, but they're part of (legacy) interface
 // TBD: specialized bank/manager pair without the cruft?
 std::size_t
-opengl33_vaogeometrybank::draw_( gfx::geometry_handle const &Geometry, gfx::stream_units const &Units, unsigned int const Streams )
+opengl46_vaogeometrybank::draw_( gfx::geometry_handle const &Geometry, gfx::stream_units const &Units, unsigned int const Streams )
 {
     setup_buffer();
 
@@ -183,7 +183,7 @@ opengl33_vaogeometrybank::draw_( gfx::geometry_handle const &Geometry, gfx::stre
 // draw_instanced() subclass details — single GL instanced draw for InstanceCount instances.
 // The vertex shader reads per-instance modelview from instance_ubo[gl_InstanceID].
 std::size_t
-opengl33_vaogeometrybank::draw_instanced_( gfx::geometry_handle const &Geometry, gfx::stream_units const &Units, std::size_t const InstanceCount, unsigned int const Streams )
+opengl46_vaogeometrybank::draw_instanced_( gfx::geometry_handle const &Geometry, gfx::stream_units const &Units, std::size_t const InstanceCount, unsigned int const Streams )
 {
     setup_buffer();
 
@@ -246,7 +246,7 @@ opengl33_vaogeometrybank::draw_instanced_( gfx::geometry_handle const &Geometry,
 // draw_batch() subclass details — neighbouring non-indexed chunks of the same type are sent with a single GL call.
 // The chunks are drawn in the supplied order, same as with a draw_() call for each of them.
 std::size_t
-opengl33_vaogeometrybank::draw_batch_( gfx::geometry_handle const *First, gfx::geometry_handle const *Last, gfx::stream_units const &Units, unsigned int const Streams )
+opengl46_vaogeometrybank::draw_batch_( gfx::geometry_handle const *First, gfx::geometry_handle const *Last, gfx::stream_units const &Units, unsigned int const Streams )
 {
     std::size_t count { 0 };
 
@@ -305,13 +305,13 @@ opengl33_vaogeometrybank::draw_batch_( gfx::geometry_handle const *First, gfx::g
 
 // release () subclass details
 void
-opengl33_vaogeometrybank::release_() {
+opengl46_vaogeometrybank::release_() {
 
     delete_buffer();
 }
 
 void
-opengl33_vaogeometrybank::delete_buffer() {
+opengl46_vaogeometrybank::delete_buffer() {
 
 	m_vao.reset();
 	m_vertexbuffer.reset();
diff --git a/rendering/opengl33geometrybank.h b/rendering/opengl46/opengl46geometrybank.h
similarity index 95%
rename from rendering/opengl33geometrybank.h
rename to rendering/opengl46/opengl46geometrybank.h
index 79526f10..553dfb2c 100644
--- a/rendering/opengl33geometrybank.h
+++ b/rendering/opengl46/opengl46geometrybank.h
@@ -17,13 +17,13 @@ namespace gfx {
 
 // opengl vao/vbo-based variant of the geometry bank
 
-class opengl33_vaogeometrybank : public geometry_bank {
+class opengl46_vaogeometrybank : public geometry_bank {
 
 public:
 // constructors:
-    opengl33_vaogeometrybank() = default;
+    opengl46_vaogeometrybank() = default;
 // destructor
-    ~opengl33_vaogeometrybank() {
+    ~opengl46_vaogeometrybank() {
         delete_buffer(); }
 // methods:
     static
diff --git a/rendering/opengl33light.cpp b/rendering/opengl46/opengl46light.cpp
similarity index 65%
rename from rendering/opengl33light.cpp
rename to rendering/opengl46/opengl46light.cpp
index dddb3236..f083d322 100644
--- a/rendering/opengl33light.cpp
+++ b/rendering/opengl46/opengl46light.cpp
@@ -9,14 +9,14 @@ http://mozilla.org/MPL/2.0/.
 
 #include "stdafx.h"
 
-#include "rendering/opengl33light.h"
+#include "rendering/opengl46/opengl46light.h"
 
-void opengl33_light::apply_intensity(float const Factor) {
+void opengl46_light::apply_intensity(float const Factor) {
 
 	factor = Factor;
 }
 
-void opengl33_light::apply_angle() const { /* nothing to do */ }
+void opengl46_light::apply_angle() const { /* nothing to do */ }
 
 
 //---------------------------------------------------------------------------
diff --git a/rendering/opengl33light.h b/rendering/opengl46/opengl46light.h
similarity index 83%
rename from rendering/opengl33light.h
rename to rendering/opengl46/opengl46light.h
index b36bad97..0830d069 100644
--- a/rendering/opengl33light.h
+++ b/rendering/opengl46/opengl46light.h
@@ -11,7 +11,7 @@ http://mozilla.org/MPL/2.0/.
 
 #include "rendering/light.h"
 
-struct opengl33_light : public basic_light {
+struct opengl46_light : public basic_light {
 
 	GLuint id{(GLuint)-1};
 
@@ -20,7 +20,7 @@ struct opengl33_light : public basic_light {
 	void apply_intensity(float const Factor = 1.0f);
 	void apply_angle() const;
 
-	opengl33_light &operator=(basic_light const &Right) {
+	opengl46_light &operator=(basic_light const &Right) {
 		basic_light::operator=(Right);
 		return *this; }
 };
diff --git a/rendering/opengl33particles.cpp b/rendering/opengl46/opengl46particles.cpp
similarity index 97%
rename from rendering/opengl33particles.cpp
rename to rendering/opengl46/opengl46particles.cpp
index 8ff82b95..1de26ff2 100644
--- a/rendering/opengl33particles.cpp
+++ b/rendering/opengl46/opengl46particles.cpp
@@ -8,7 +8,7 @@ http://mozilla.org/MPL/2.0/.
 */
 
 #include "stdafx.h"
-#include "rendering/opengl33particles.h"
+#include "rendering/opengl46/opengl46particles.h"
 
 #include "rendering/particles.h"
 #include "rendering/openglcamera.h"
@@ -26,7 +26,7 @@ std::vector<std::pair<glm::vec3, glm::vec2>> const billboard_vertices {
 };
 
 void
-opengl33_particles::update( opengl_camera const &Camera ) {
+opengl46_particles::update( opengl_camera const &Camera ) {
 
 	if (!Global.Smoke)
 		return;
@@ -100,7 +100,7 @@ opengl33_particles::update( opengl_camera const &Camera ) {
 }
 
 std::size_t
-opengl33_particles::render() {
+opengl46_particles::render() {
 
     if( false == Global.Smoke ) { return 0; }
 	if( m_buffercapacity == 0 ) { return 0; }
diff --git a/rendering/opengl33particles.h b/rendering/opengl46/opengl46particles.h
similarity index 95%
rename from rendering/opengl33particles.h
rename to rendering/opengl46/opengl46particles.h
index 0d51a8ec..34f61838 100644
--- a/rendering/opengl33particles.h
+++ b/rendering/opengl46/opengl46particles.h
@@ -16,10 +16,10 @@ http://mozilla.org/MPL/2.0/.
 class opengl_camera;
 
 // particle data visualizer
-class opengl33_particles {
+class opengl46_particles {
 public:
 // constructors
-	opengl33_particles() = default;
+	opengl46_particles() = default;
 
 // methods
 	void
diff --git a/rendering/opengl33precipitation.cpp b/rendering/opengl46/opengl46precipitation.cpp
similarity index 95%
rename from rendering/opengl33precipitation.cpp
rename to rendering/opengl46/opengl46precipitation.cpp
index 308248b7..efefcf10 100644
--- a/rendering/opengl33precipitation.cpp
+++ b/rendering/opengl46/opengl46precipitation.cpp
@@ -8,18 +8,18 @@ http://mozilla.org/MPL/2.0/.
 */
 
 #include "stdafx.h"
-#include "rendering/opengl33precipitation.h"
+#include "rendering/opengl46/opengl46precipitation.h"
 
 #include "utilities/Globals.h"
 #include "rendering/renderer.h"
 #include "simulation/simulationenvironment.h"
 
-opengl33_precipitation::~opengl33_precipitation() {
+opengl46_precipitation::~opengl46_precipitation() {
     // TODO: release allocated resources
 }
 
 void
-opengl33_precipitation::create( int const Tesselation ) {
+opengl46_precipitation::create( int const Tesselation ) {
 
     m_vertices.clear();
     m_uvs.clear();
@@ -86,7 +86,7 @@ opengl33_precipitation::create( int const Tesselation ) {
 }
 
 void 
-opengl33_precipitation::update() {
+opengl46_precipitation::update() {
 
 	if (!m_shader)
 	{
@@ -143,7 +143,7 @@ opengl33_precipitation::update() {
 }
 
 void
-opengl33_precipitation::render() {
+opengl46_precipitation::render() {
 
     if( !m_shader ) { return; }
     if( !m_vao )    { return; }
diff --git a/rendering/opengl33precipitation.h b/rendering/opengl46/opengl46precipitation.h
similarity index 90%
rename from rendering/opengl33precipitation.h
rename to rendering/opengl46/opengl46precipitation.h
index 9aab5ec5..9dacb9d2 100644
--- a/rendering/opengl33precipitation.h
+++ b/rendering/opengl46/opengl46precipitation.h
@@ -13,13 +13,13 @@ http://mozilla.org/MPL/2.0/.
 #include "gl/vao.h"
 #include "gl/shader.h"
 
-class opengl33_precipitation {
+class opengl46_precipitation {
 
 public:
 // constructors
-    opengl33_precipitation() = default;
+    opengl46_precipitation() = default;
 // destructor
-	~opengl33_precipitation();
+	~opengl46_precipitation();
 // methods
     void
         update();
diff --git a/rendering/opengl33renderer.cpp b/rendering/opengl46/opengl46renderer.cpp
similarity index 96%
rename from rendering/opengl33renderer.cpp
rename to rendering/opengl46/opengl46renderer.cpp
index fbaad923..f7f29319 100644
--- a/rendering/opengl33renderer.cpp
+++ b/rendering/opengl46/opengl46renderer.cpp
@@ -8,7 +8,7 @@ http://mozilla.org/MPL/2.0/.
 */
 
 #include "stdafx.h"
-#include "rendering/opengl33renderer.h"
+#include "rendering/opengl46/opengl46renderer.h"
 #include "utilities/color.h"
 #include "utilities/Globals.h"
 #include "utilities/Timer.h"
@@ -19,7 +19,7 @@ http://mozilla.org/MPL/2.0/.
 #include "simulation/simulationtime.h"
 #include "application/application.h"
 #include "model/AnimModel.h"
-#include "rendering/opengl33geometrybank.h"
+#include "rendering/opengl46/opengl46geometrybank.h"
 #include "rendering/screenshot.h"
 #include "rendering/editoroverlay.h"
 #include <imgui/imgui_impl_opengl3.h>
@@ -94,7 +94,7 @@ ErrorCallback( GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei l
         + message );
 }
 
-bool opengl33_renderer::Init(GLFWwindow *Window)
+bool opengl46_renderer::Init(GLFWwindow *Window)
 {
     if (Global.gfx_gldebug && GLAD_GL_KHR_debug) {
         glEnable( GL_DEBUG_OUTPUT );
@@ -125,12 +125,12 @@ bool opengl33_renderer::Init(GLFWwindow *Window)
 	Global.DayLight.diffuse[1] = 0.9490196f;  // 242 / 255
 	Global.DayLight.diffuse[2] = 0.9058824f;  // 231 / 255
 	Global.DayLight.is_directional = true;
-	m_sunlight.id = opengl33_renderer::sunlight;
+	m_sunlight.id = opengl46_renderer::sunlight;
 
 	// create dynamic light pool
 	for (int idx = 0; idx < Global.DynamicLightCount; ++idx)
 	{
-		opengl33_light light;
+		opengl46_light light;
 		light.id = 1 + idx;
 
 		light.is_directional = false;
@@ -380,12 +380,12 @@ bool opengl33_renderer::Init(GLFWwindow *Window)
     return true;
 }
 
-void opengl33_renderer::Shutdown()
+void opengl46_renderer::Shutdown()
 {
     vr.reset();
 }
 
-bool opengl33_renderer::AddViewport(const global_settings::extraviewport_config &conf)
+bool opengl46_renderer::AddViewport(const global_settings::extraviewport_config &conf)
 {
     viewport_config *vp;
 
@@ -410,7 +410,7 @@ bool opengl33_renderer::AddViewport(const global_settings::extraviewport_config
 	return ret;
 }
 
-bool opengl33_renderer::init_viewport(viewport_config &vp)
+bool opengl46_renderer::init_viewport(viewport_config &vp)
 {
     if (vp.initialized)
         return true;
@@ -552,7 +552,7 @@ bool opengl33_renderer::init_viewport(viewport_config &vp)
 	return true;
 }
 
-std::unique_ptr<gl::program> opengl33_renderer::make_shader(std::string v, std::string f)
+std::unique_ptr<gl::program> opengl46_renderer::make_shader(std::string v, std::string f)
 {
 	gl::shader vert(v);
 	gl::shader frag(f);
@@ -560,7 +560,7 @@ std::unique_ptr<gl::program> opengl33_renderer::make_shader(std::string v, std::
 	return std::unique_ptr<gl::program>(prog);
 }
 
-bool opengl33_renderer::Render()
+bool opengl46_renderer::Render()
 {
 	Timer::subsystem.gfx_total.start();
 
@@ -620,12 +620,12 @@ bool opengl33_renderer::Render()
     Timer::subsystem.gfx_total.stop();
 
     // swapbuffers() could unbind current buffers so we prepare for it on our end
-    gfx::opengl33_vaogeometrybank::reset();
+    gfx::opengl46_vaogeometrybank::reset();
 
     return true; // for now always succeed
 }
 
-void opengl33_renderer::SwapBuffers()
+void opengl46_renderer::SwapBuffers()
 {
 	Timer::subsystem.gfx_swap.start();
 
@@ -692,7 +692,7 @@ void opengl33_renderer::SwapBuffers()
         + "particles: " + to_string( m_colorpass.draw_stats.particles, 7 );
 }
 
-void opengl33_renderer::draw_debug_ui()
+void opengl46_renderer::draw_debug_ui()
 {
 	if (!debug_ui_active)
 		return;
@@ -722,7 +722,7 @@ void opengl33_renderer::draw_debug_ui()
 }
 
 // runs jobs needed to generate graphics for specified render pass
-void opengl33_renderer::Render_pass(viewport_config &vp, rendermode const Mode)
+void opengl46_renderer::Render_pass(viewport_config &vp, rendermode const Mode)
 {
 	setup_pass(vp, m_renderpass, Mode);
     switch (m_renderpass.draw_mode)
@@ -1252,7 +1252,7 @@ if (!Global.gfx_skippipeline)
 }
 
 
-bool opengl33_renderer::Render_interior( bool const Alpha ) {
+bool opengl46_renderer::Render_interior( bool const Alpha ) {
     // TODO: early frustum based cull, camera might be pointing elsewhere
     std::vector< std::pair<float, TDynamicObject *> > dynamics;
     auto *dynamic { simulation::Train->Dynamic() };
@@ -1286,7 +1286,7 @@ bool opengl33_renderer::Render_interior( bool const Alpha ) {
     return true;
 }
 
-bool opengl33_renderer::Render_lowpoly( TDynamicObject *Dynamic, float const Squaredistance, bool const Setup, bool const Alpha ) {
+bool opengl46_renderer::Render_lowpoly( TDynamicObject *Dynamic, float const Squaredistance, bool const Setup, bool const Alpha ) {
 
     if( Dynamic->mdLowPolyInt == nullptr ) { return false; }
 
@@ -1362,7 +1362,7 @@ bool opengl33_renderer::Render_lowpoly( TDynamicObject *Dynamic, float const Squ
     return true;
 }
 
-bool opengl33_renderer::Render_coupler_adapter( TDynamicObject *Dynamic, float const Squaredistance, int const End, bool const Alpha ) {
+bool opengl46_renderer::Render_coupler_adapter( TDynamicObject *Dynamic, float const Squaredistance, int const End, bool const Alpha ) {
 
     if( Dynamic->m_coupleradapters[ End ] == nullptr ) { return false; }
 
@@ -1387,7 +1387,7 @@ bool opengl33_renderer::Render_coupler_adapter( TDynamicObject *Dynamic, float c
 }
 
 // creates dynamic environment cubemap
-bool opengl33_renderer::Render_reflections(viewport_config &vp)
+bool opengl46_renderer::Render_reflections(viewport_config &vp)
 {
     if( Global.reflectiontune.update_interval == 0 ) { return false; }
 
@@ -1428,7 +1428,7 @@ bool opengl33_renderer::Render_reflections(viewport_config &vp)
 
 // based on
 // https://csc.lsu.edu/~kooima/articles/genperspective/index.html
-glm::mat4 opengl33_renderer::perspective_projection(const viewport_proj_config &c,
+glm::mat4 opengl46_renderer::perspective_projection(const viewport_proj_config &c,
                                                   float n, float f, glm::mat4 &frustum)
 {
 	glm::vec3 vr, vu, vn;
@@ -1483,7 +1483,7 @@ glm::mat4 opengl33_renderer::perspective_projection(const viewport_proj_config &
 	return glm::translate(R * M, -c.pe);
 }
 
-glm::mat4 opengl33_renderer::perspective_projection_raw(float fovy, float aspect, float znear, float zfar)
+glm::mat4 opengl46_renderer::perspective_projection_raw(float fovy, float aspect, float znear, float zfar)
 {
     if (GLAD_GL_ARB_clip_control || GLAD_GL_EXT_clip_control)
     {
@@ -1509,7 +1509,7 @@ glm::mat4 opengl33_renderer::perspective_projection_raw(float fovy, float aspect
                glm::perspective(fovy, aspect, znear, zfar);
 }
 
-glm::mat4 opengl33_renderer::ortho_projection(float l, float r, float b, float t, float znear, float zfar)
+glm::mat4 opengl46_renderer::ortho_projection(float l, float r, float b, float t, float znear, float zfar)
 {
 	glm::mat4 proj = glm::ortho(l, r, b, t, znear, zfar);
 	if (GLAD_GL_ARB_clip_control || GLAD_GL_EXT_clip_control)
@@ -1533,14 +1533,14 @@ glm::mat4 opengl33_renderer::ortho_projection(float l, float r, float b, float t
 		       proj;
 }
 
-glm::mat4 opengl33_renderer::ortho_frustumtest_projection(float l, float r, float b, float t, float znear, float zfar)
+glm::mat4 opengl46_renderer::ortho_frustumtest_projection(float l, float r, float b, float t, float znear, float zfar)
 {
 	// for frustum calculation, use standard opengl matrix
 	return glm::ortho(l, r, b, t, znear, zfar);
 }
 
 // the main viewport of the editor in the orthographic view replaces the perspective projection
-void opengl33_renderer::editor_ortho_projection(viewport_config const &Viewport, float const Zfar, glm::mat4 &Projection, glm::mat4 &Frustum)
+void opengl46_renderer::editor_ortho_projection(viewport_config const &Viewport, float const Zfar, glm::mat4 &Projection, glm::mat4 &Frustum)
 {
 	if (false == (EditorModeFlag && Global.EditorOrtho && Viewport.main))
 		return;
@@ -1550,7 +1550,7 @@ void opengl33_renderer::editor_ortho_projection(viewport_config const &Viewport,
 	Frustum = ortho_frustumtest_projection(-width, width, -height, height, -Zfar, Zfar);
 }
 
-void opengl33_renderer::setup_pass(viewport_config &Viewport, renderpass_config &Config, rendermode const Mode,
+void opengl46_renderer::setup_pass(viewport_config &Viewport, renderpass_config &Config, rendermode const Mode,
                                  float const Znear, float const Zfar, bool const Ignoredebug)
 {
 	Config.draw_mode = Mode;
@@ -1762,7 +1762,7 @@ void opengl33_renderer::setup_pass(viewport_config &Viewport, renderpass_config
 	camera.update_frustum(frustumtest_proj);
 }
 
-void opengl33_renderer::setup_matrices()
+void opengl46_renderer::setup_matrices()
 {
     OpenGLMatrices.mode(GL_PROJECTION);
 	OpenGLMatrices.load_matrix(m_renderpass.pass_camera.projection());
@@ -1771,7 +1771,7 @@ void opengl33_renderer::setup_matrices()
     OpenGLMatrices.load_matrix(glm::mat4{glm::mat3{m_renderpass.pass_camera.modelview()}});
 }
 
-void opengl33_renderer::setup_drawing(bool const Alpha)
+void opengl46_renderer::setup_drawing(bool const Alpha)
 {
 	if (Alpha)
 	{
@@ -1812,13 +1812,13 @@ void opengl33_renderer::setup_drawing(bool const Alpha)
 	}
 }
 
-void opengl33_renderer::setup_shadow_unbind_map()
+void opengl46_renderer::setup_shadow_unbind_map()
 {
     opengl_texture::unbind( gl::SHADOW_TEX );
 }
 
 // binds shadow map and updates shadow map uniform data
-void opengl33_renderer::setup_shadow_bind_map()
+void opengl46_renderer::setup_shadow_bind_map()
 {
     if( false == Global.gfx_shadowmap_enabled ) { return; }
 
@@ -1862,12 +1862,12 @@ void opengl33_renderer::setup_shadow_bind_map()
 	scene_ubo->update(scene_ubs);
 }
 
-void opengl33_renderer::setup_shadow_color( glm::vec4 const &Shadowcolor ) {
+void opengl46_renderer::setup_shadow_color( glm::vec4 const &Shadowcolor ) {
 
     model_ubs.shadow_tone = glm::pow( Shadowcolor.x, 2.2f );
 }
 
-void opengl33_renderer::setup_env_map(gl::cubemap *tex)
+void opengl46_renderer::setup_env_map(gl::cubemap *tex)
 {
 	if (tex)
 	{
@@ -1883,7 +1883,7 @@ void opengl33_renderer::setup_env_map(gl::cubemap *tex)
 	opengl_texture::reset_unit_cache();
 }
 
-void opengl33_renderer::setup_environment_light(TEnvironmentType const Environment)
+void opengl46_renderer::setup_environment_light(TEnvironmentType const Environment)
 {
 
 	switch (Environment)
@@ -1913,7 +1913,7 @@ void opengl33_renderer::setup_environment_light(TEnvironmentType const Environme
 	}
 }
 
-void opengl33_renderer::setup_sunlight_intensity( float const Factor ) {
+void opengl46_renderer::setup_sunlight_intensity( float const Factor ) {
 
     m_sunlight.apply_intensity( Factor );
     light_ubs.lights[ 0 ].intensity = m_sunlight.factor * (1.0f - Global.Overcast * 0.33f);
@@ -1921,7 +1921,7 @@ void opengl33_renderer::setup_sunlight_intensity( float const Factor ) {
     light_ubo->update( light_ubs );
 }
 
-bool opengl33_renderer::Render(world_environment *Environment)
+bool opengl46_renderer::Render(world_environment *Environment)
 {
     m_shadowcolor = colors::white; // prevent shadow from affecting sky
     setup_shadow_color( m_shadowcolor );
@@ -1946,7 +1946,7 @@ bool opengl33_renderer::Render(world_environment *Environment)
         m_skydomerenderer.update();
         m_skydomerenderer.render();
         // skydome uses a custom vbo which could potentially confuse the main geometry system. hardly elegant but, eh
-        gfx::opengl33_vaogeometrybank::reset();
+        gfx::opengl46_vaogeometrybank::reset();
     }
     glPopMatrix();
 
@@ -2120,20 +2120,20 @@ bool opengl33_renderer::Render(world_environment *Environment)
 
 // geometry methods
 // creates a new geometry bank. returns: handle to the bank or NULL
-gfx::geometrybank_handle opengl33_renderer::Create_Bank()
+gfx::geometrybank_handle opengl46_renderer::Create_Bank()
 {
-        return m_geometry.register_bank(std::make_unique<gfx::opengl33_vaogeometrybank>());
+        return m_geometry.register_bank(std::make_unique<gfx::opengl46_vaogeometrybank>());
 }
 
 // creates a new indexed geometry chunk of specified type from supplied data, in specified bank. returns: handle to the chunk or NULL
-gfx::geometry_handle opengl33_renderer::Insert(gfx::index_array &Indices, gfx::vertex_array &Vertices, gfx::userdata_array &Userdata, gfx::geometrybank_handle const &Geometry, int const Type)
+gfx::geometry_handle opengl46_renderer::Insert(gfx::index_array &Indices, gfx::vertex_array &Vertices, gfx::userdata_array &Userdata, gfx::geometrybank_handle const &Geometry, int const Type)
 {
     // NOTE: we expect indexed geometry to come with calculated tangents
     return m_geometry.create_chunk( Indices, Vertices, Userdata, Geometry, Type );
 }
 
 // creates a new geometry chunk of specified type from supplied data, in specified bank. returns: handle to the chunk or NULL
-gfx::geometry_handle opengl33_renderer::Insert(gfx::vertex_array &Vertices, gfx::userdata_array &Userdata, gfx::geometrybank_handle const &Geometry, int const Type)
+gfx::geometry_handle opengl46_renderer::Insert(gfx::vertex_array &Vertices, gfx::userdata_array &Userdata, gfx::geometrybank_handle const &Geometry, int const Type)
 {
 	gfx::calculate_tangents(Vertices, gfx::index_array(), Type);
 
@@ -2141,7 +2141,7 @@ gfx::geometry_handle opengl33_renderer::Insert(gfx::vertex_array &Vertices, gfx:
 }
 
 // replaces data of specified chunk with the supplied vertex data, starting from specified offset
-bool opengl33_renderer::Replace(gfx::vertex_array &Vertices, gfx::userdata_array &Userdata, gfx::geometry_handle const &Geometry, int const Type, const std::size_t Offset)
+bool opengl46_renderer::Replace(gfx::vertex_array &Vertices, gfx::userdata_array &Userdata, gfx::geometry_handle const &Geometry, int const Type, const std::size_t Offset)
 {
 	gfx::calculate_tangents(Vertices, gfx::index_array(), Type);
 
@@ -2149,7 +2149,7 @@ bool opengl33_renderer::Replace(gfx::vertex_array &Vertices, gfx::userdata_array
 }
 
 // adds supplied vertex data at the end of specified chunk
-bool opengl33_renderer::Append(gfx::vertex_array &Vertices, gfx::userdata_array &Userdata, gfx::geometry_handle const &Geometry, int const Type)
+bool opengl46_renderer::Append(gfx::vertex_array &Vertices, gfx::userdata_array &Userdata, gfx::geometry_handle const &Geometry, int const Type)
 {
 	gfx::calculate_tangents(Vertices, gfx::index_array(), Type);
 
@@ -2157,30 +2157,30 @@ bool opengl33_renderer::Append(gfx::vertex_array &Vertices, gfx::userdata_array
 }
 
 // provides direct access to index data of specfied chunk
-gfx::index_array const & opengl33_renderer::Indices(gfx::geometry_handle const &Geometry) const 
+gfx::index_array const & opengl46_renderer::Indices(gfx::geometry_handle const &Geometry) const 
 {
     return m_geometry.indices(Geometry);
 }
 
 // provides direct access to vertex data of specfied chunk
-gfx::vertex_array const &opengl33_renderer::Vertices(gfx::geometry_handle const &Geometry) const
+gfx::vertex_array const &opengl46_renderer::Vertices(gfx::geometry_handle const &Geometry) const
 {
 	return m_geometry.vertices(Geometry);
 }
 
-gfx::userdata_array const &opengl33_renderer::UserData(const gfx::geometry_handle &Geometry) const
+gfx::userdata_array const &opengl46_renderer::UserData(const gfx::geometry_handle &Geometry) const
 {
 	return m_geometry.userdata(Geometry);
 }
 
 // material methods
-material_handle opengl33_renderer::Fetch_Material(std::string const &Filename, bool const Loadnow)
+material_handle opengl46_renderer::Fetch_Material(std::string const &Filename, bool const Loadnow)
 {
 
 	return m_materials.create(Filename, Loadnow);
 }
 
-std::shared_ptr<gl::program> opengl33_renderer::Fetch_Shader(const std::string &name)
+std::shared_ptr<gl::program> opengl46_renderer::Fetch_Shader(const std::string &name)
 {
 	auto it = m_shaders.find(name);
 	if (it == m_shaders.end())
@@ -2193,7 +2193,7 @@ std::shared_ptr<gl::program> opengl33_renderer::Fetch_Shader(const std::string &
 	return m_shaders[name];
 }
 
-void opengl33_renderer::Bind_Material( material_handle const Material, TSubModel const *sm, lighting_data const *lighting )
+void opengl46_renderer::Bind_Material( material_handle const Material, TSubModel const *sm, lighting_data const *lighting )
 {
 	if (Material != null_handle)
 	{
@@ -2349,7 +2349,7 @@ void opengl33_renderer::Bind_Material( material_handle const Material, TSubModel
 		Bind_Material(m_invalid_material);
 }
 
-void opengl33_renderer::Bind_Material_Shadow(material_handle const Material)
+void opengl46_renderer::Bind_Material_Shadow(material_handle const Material)
 {
 	if (Material != null_handle)
 	{
@@ -2369,12 +2369,12 @@ void opengl33_renderer::Bind_Material_Shadow(material_handle const Material)
     }
 }
 
-IMaterial const *opengl33_renderer::Material(material_handle const Material) const
+IMaterial const *opengl46_renderer::Material(material_handle const Material) const
 {
 	return &m_materials.material(Material);
 }
 
-material_handle opengl33_renderer::Terrain_Material(material_handle const Reuse, std::vector<gfx::terrain_layer> const &Layers, int const Samples, std::uint8_t const *Weights, glm::vec3 const &Placement)
+material_handle opengl46_renderer::Terrain_Material(material_handle const Reuse, std::vector<gfx::terrain_layer> const &Layers, int const Samples, std::uint8_t const *Weights, glm::vec3 const &Placement)
 {
 	auto const material{m_terrainmaterials.make(Reuse, Layers, Samples, Weights, Placement)};
 	if (material != null_handle)
@@ -2383,54 +2383,54 @@ material_handle opengl33_renderer::Terrain_Material(material_handle const Reuse,
 	return gfx_renderer::Terrain_Material(Reuse, Layers, Samples, Weights, Placement);
 }
 
-void opengl33_renderer::Terrain_Release(material_handle const Material)
+void opengl46_renderer::Terrain_Release(material_handle const Material)
 {
 	m_terrainmaterials.release(Material);
 }
 
-opengl_material &opengl33_renderer::Material(material_handle const Material)
+opengl_material &opengl46_renderer::Material(material_handle const Material)
 {
 	return m_materials.material(Material);
 }
 
-opengl_material const & opengl33_renderer::Material( TSubModel const * Submodel ) const {
+opengl_material const & opengl46_renderer::Material( TSubModel const * Submodel ) const {
 
     return m_materials.material( submodel_material( Submodel ) );
 }
 
-texture_handle opengl33_renderer::Fetch_Texture(std::string const &Filename, bool const Loadnow, GLint format_hint)
+texture_handle opengl46_renderer::Fetch_Texture(std::string const &Filename, bool const Loadnow, GLint format_hint)
 {
 	return m_textures.create(Filename, Loadnow, format_hint);
 }
 
-void opengl33_renderer::Bind_Texture( texture_handle const Texture )
+void opengl46_renderer::Bind_Texture( texture_handle const Texture )
 {
     return Bind_Texture( 0, Texture );
 }
 
-void opengl33_renderer::Bind_Texture(std::size_t const Unit, texture_handle const Texture)
+void opengl46_renderer::Bind_Texture(std::size_t const Unit, texture_handle const Texture)
 {
 	m_textures.bind(Unit, Texture);
 }
 
-ITexture &opengl33_renderer::Texture(texture_handle const Texture)
+ITexture &opengl46_renderer::Texture(texture_handle const Texture)
 {
 
 	return m_textures.texture(Texture);
 }
 
-ITexture const &opengl33_renderer::Texture(texture_handle const Texture) const
+ITexture const &opengl46_renderer::Texture(texture_handle const Texture) const
 {
 
 	return m_textures.texture(Texture);
 }
 
-void opengl33_renderer::Update_AnimModel(TAnimModel *model)
+void opengl46_renderer::Update_AnimModel(TAnimModel *model)
 {
 	model->RaAnimate(m_framestamp);
 }
 
-void opengl33_renderer::Render(scene::basic_region *Region)
+void opengl46_renderer::Render(scene::basic_region *Region)
 {
 
 	m_sectionqueue.clear();
@@ -2526,7 +2526,7 @@ void opengl33_renderer::Render(scene::basic_region *Region)
 	}
 }
 
-void opengl33_renderer::Render(section_sequence::iterator First, section_sequence::iterator Last)
+void opengl46_renderer::Render(section_sequence::iterator First, section_sequence::iterator Last)
 {
 
 	switch (m_renderpass.draw_mode)
@@ -2637,7 +2637,7 @@ void opengl33_renderer::Render(section_sequence::iterator First, section_sequenc
 	}
 }
 
-void opengl33_renderer::Render(cell_sequence::iterator First, cell_sequence::iterator Last)
+void opengl46_renderer::Render(cell_sequence::iterator First, cell_sequence::iterator Last)
 {
 
 	// cache initial iterator for the second sweep
@@ -2881,7 +2881,7 @@ void opengl33_renderer::Render(cell_sequence::iterator First, cell_sequence::ite
 	}
 }
 
-void opengl33_renderer::Draw_Geometry(std::vector<gfx::geometrybank_handle>::iterator begin, std::vector<gfx::geometrybank_handle>::iterator end)
+void opengl46_renderer::Draw_Geometry(std::vector<gfx::geometrybank_handle>::iterator begin, std::vector<gfx::geometrybank_handle>::iterator end)
 {
 	if (begin == end)
 	{
@@ -2892,12 +2892,12 @@ void opengl33_renderer::Draw_Geometry(std::vector<gfx::geometrybank_handle>::ite
 	m_geometry.draw_batch(first, first + std::distance(begin, end));
 }
 
-void opengl33_renderer::Draw_Geometry(const gfx::geometrybank_handle &handle)
+void opengl46_renderer::Draw_Geometry(const gfx::geometrybank_handle &handle)
 {
 	m_geometry.draw(handle);
 }
 
-void opengl33_renderer::draw(const gfx::geometry_handle &handle)
+void opengl46_renderer::draw(const gfx::geometry_handle &handle)
 {
 	model_ubs.set_modelview(OpenGLMatrices.data(GL_MODELVIEW));
 	model_ubo->update(model_ubs);
@@ -2912,7 +2912,7 @@ void opengl33_renderer::draw(const gfx::geometry_handle &handle)
 	}
 }
 
-void opengl33_renderer::draw(std::vector<gfx::geometrybank_handle>::iterator it, std::vector<gfx::geometrybank_handle>::iterator end)
+void opengl46_renderer::draw(std::vector<gfx::geometrybank_handle>::iterator it, std::vector<gfx::geometrybank_handle>::iterator end)
 {
 	model_ubs.set_modelview(OpenGLMatrices.data(GL_MODELVIEW));
 	model_ubo->update(model_ubs);
@@ -2920,7 +2920,7 @@ void opengl33_renderer::draw(std::vector<gfx::geometrybank_handle>::iterator it,
 	Draw_Geometry(it, end);
 }
 
-void opengl33_renderer::Render(scene::shape_node const &Shape, bool const Ignorerange)
+void opengl46_renderer::Render(scene::shape_node const &Shape, bool const Ignorerange)
 {
 	auto const &data{Shape.data()};
 
@@ -2988,7 +2988,7 @@ void opengl33_renderer::Render(scene::shape_node const &Shape, bool const Ignore
 	++m_renderpass.draw_stats.drawcalls;
 }
 
-void opengl33_renderer::Render(TAnimModel *Instance)
+void opengl46_renderer::Render(TAnimModel *Instance)
 {
 
 	if (false == Instance->m_visible) { return; }
@@ -3091,7 +3091,7 @@ void opengl33_renderer::Render(TAnimModel *Instance)
 // Render_Instanced() culls each instance it's given. the tests it makes are repeated here on the copies of instance
 // bounds kept by the buckets, with some slack for the single precision of the copies, and the instances which fail are
 // left out: the instances themselves are fetched only when there's a chance for them to be drawn
-void opengl33_renderer::Queue_Instances( scene::basic_cell const *Cell )
+void opengl46_renderer::Queue_Instances( scene::basic_cell const *Cell )
 {
 	// the editor moves and resizes the instances in place, the copies can't be relied on while it's active
 	auto const usebounds { false == EditorModeFlag };
@@ -3139,7 +3139,7 @@ void opengl33_renderer::Queue_Instances( scene::basic_cell const *Cell )
 }
 
 // makes the copies of the bounds of the instances held by a bucket of a scene cell
-void opengl33_renderer::Update_Instance_Bounds( TModel3d const *Model, scene::basic_cell::instance_bucket const &Bucket )
+void opengl46_renderer::Update_Instance_Bounds( TModel3d const *Model, scene::basic_cell::instance_bucket const &Bucket )
 {
 	// a submodel is drawn only closer than its fSquareMaxDist, see Render( TSubModel * ). past the largest of these
 	// there's nothing of the model left to draw, which makes it another limit of the range of its instances
@@ -3178,7 +3178,7 @@ void opengl33_renderer::Update_Instance_Bounds( TModel3d const *Model, scene::ba
 // (accumulated by the matrix stack starting from identity, NOT the camera/instance frame).
 //
 // Batch size is capped at MAX_INSTANCES_PER_BATCH (256). Larger groups are split.
-void opengl33_renderer::Render_Instanced( TModel3d *Model, std::vector<TAnimModel *> const &Instances )
+void opengl46_renderer::Render_Instanced( TModel3d *Model, std::vector<TAnimModel *> const &Instances )
 {
 	if( Model == nullptr ) { return; }
 	if( Instances.empty() ) { return; }
@@ -3381,7 +3381,7 @@ void opengl33_renderer::Render_Instanced( TModel3d *Model, std::vector<TAnimMode
 //   - the track has no sleepermodel
 //   - the track is farther than Global.SleeperDistance meters from the camera
 // releases gl textures used only by vehicles farther than gfx.textures.releasedistance times the draw range
-void opengl33_renderer::Update_Texture_Release()
+void opengl46_renderer::Update_Texture_Release()
 {
 	if (m_colorpass.draw_range <= 0.f)
 	{
@@ -3439,7 +3439,7 @@ void opengl33_renderer::Update_Texture_Release()
 }
 
 // textures used by materials of the sub-models of specified model, replaceable skins excluded
-std::vector<texture_handle> const &opengl33_renderer::Model_Textures(TModel3d *Model)
+std::vector<texture_handle> const &opengl46_renderer::Model_Textures(TModel3d *Model)
 {
 	auto const lookup{m_modeltextures.find(Model)};
 	if (lookup != m_modeltextures.end())
@@ -3493,7 +3493,7 @@ std::vector<texture_handle> const &opengl33_renderer::Model_Textures(TModel3d *M
 	return textures;
 }
 
-void opengl33_renderer::Render_Sleepers( TTrack *Track )
+void opengl46_renderer::Render_Sleepers( TTrack *Track )
 {
 	if( Track == nullptr ) { return; }
 	if( false == Track->m_sleeper_enabled ) { return; }
@@ -3677,7 +3677,7 @@ void opengl33_renderer::Render_Sleepers( TTrack *Track )
 	m_renderpass.draw_stats.models    += static_cast<int>( total );
 }
 
-bool opengl33_renderer::Render(TDynamicObject *Dynamic)
+bool opengl46_renderer::Render(TDynamicObject *Dynamic)
 {
 	glDebug("Render TDynamicObject");
 
@@ -3853,7 +3853,7 @@ bool opengl33_renderer::Render(TDynamicObject *Dynamic)
 }
 
 // rendering kabiny gdy jest oddzielnym modelem i ma byc wyswietlana
-bool opengl33_renderer::Render_cab(TDynamicObject const *Dynamic, float const Lightlevel, bool const Alpha)
+bool opengl46_renderer::Render_cab(TDynamicObject const *Dynamic, float const Lightlevel, bool const Alpha)
 {
 
 	if (Dynamic == nullptr)
@@ -3947,7 +3947,7 @@ bool opengl33_renderer::Render_cab(TDynamicObject const *Dynamic, float const Li
 	return true;
 }
 
-bool opengl33_renderer::Render(TModel3d *Model, material_data const *Material, float const Squaredistance)
+bool opengl46_renderer::Render(TModel3d *Model, material_data const *Material, float const Squaredistance)
 {
 
 	auto alpha = (Material != nullptr ? Material->textures_alpha : 0x30300030);
@@ -3973,7 +3973,7 @@ bool opengl33_renderer::Render(TModel3d *Model, material_data const *Material, f
 	return true;
 }
 
-bool opengl33_renderer::Render(TModel3d *Model, material_data const *Material, float const Squaredistance, glm::dvec3 const &Position, glm::vec3 const &Angle)
+bool opengl46_renderer::Render(TModel3d *Model, material_data const *Material, float const Squaredistance, glm::dvec3 const &Position, glm::vec3 const &Angle)
 {
 	::glPushMatrix();
 	::glTranslated(Position.x, Position.y, Position.z);
@@ -3991,7 +3991,7 @@ bool opengl33_renderer::Render(TModel3d *Model, material_data const *Material, f
 	return result;
 }
 
-void opengl33_renderer::Render(TSubModel *Submodel)
+void opengl46_renderer::Render(TSubModel *Submodel)
 {
 	glDebug("Render TSubModel");
 
@@ -4160,7 +4160,7 @@ void opengl33_renderer::Render(TSubModel *Submodel)
 			Render(Submodel->Next); // dalsze rekurencyjnie
 }
 
-void opengl33_renderer::Render(TTrack *Track)
+void opengl46_renderer::Render(TTrack *Track)
 {
 	if ((Track->m_material1 == 0) && (Track->m_material2 == 0) && (Track->eType != tt_Switch || Track->SwitchExtension->m_material3 == 0))
 	{
@@ -4196,7 +4196,7 @@ void opengl33_renderer::Render(TTrack *Track)
 }
 
 // experimental, does track rendering in two passes, to take advantage of reduced texture switching
-void opengl33_renderer::Render(scene::basic_cell::path_sequence::const_iterator First, scene::basic_cell::path_sequence::const_iterator Last)
+void opengl46_renderer::Render(scene::basic_cell::path_sequence::const_iterator First, scene::basic_cell::path_sequence::const_iterator Last)
 {
 
 	// setup
@@ -4465,7 +4465,7 @@ void opengl33_renderer::Render(scene::basic_cell::path_sequence::const_iterator
 	}
 }
 
-void opengl33_renderer::Render(TMemCell *Memcell)
+void opengl46_renderer::Render(TMemCell *Memcell)
 {
 
 	::glPushMatrix();
@@ -4497,7 +4497,7 @@ void opengl33_renderer::Render(TMemCell *Memcell)
 	::glPopMatrix();
 }
 
-void opengl33_renderer::Render_particles()
+void opengl46_renderer::Render_particles()
 {
 	model_ubs.set_modelview(OpenGLMatrices.data(GL_MODELVIEW));
 	model_ubo->update(model_ubs);
@@ -4507,7 +4507,7 @@ void opengl33_renderer::Render_particles()
     m_renderpass.draw_stats.particles = m_particlerenderer.render();
 }
 
-void opengl33_renderer::Render_vr_models()
+void opengl46_renderer::Render_vr_models()
 {
     if (!vr)
         return;
@@ -4526,7 +4526,7 @@ void opengl33_renderer::Render_vr_models()
     ::glPopMatrix();
 }
 
-void opengl33_renderer::Render_precipitation()
+void opengl46_renderer::Render_precipitation()
 {
 	if (Global.Overcast <= 1.f)
 	{
@@ -4580,7 +4580,7 @@ void opengl33_renderer::Render_precipitation()
 	::glPopMatrix();
 }
 
-void opengl33_renderer::Render_Alpha(scene::basic_region *Region)
+void opengl46_renderer::Render_Alpha(scene::basic_region *Region)
 {
 
 	// sort the nodes based on their distance to viewer
@@ -4589,7 +4589,7 @@ void opengl33_renderer::Render_Alpha(scene::basic_region *Region)
 	Render_Alpha(std::rbegin(m_cellqueue), std::rend(m_cellqueue));
 }
 
-void opengl33_renderer::Render_Alpha(cell_sequence::reverse_iterator First, cell_sequence::reverse_iterator Last)
+void opengl46_renderer::Render_Alpha(cell_sequence::reverse_iterator First, cell_sequence::reverse_iterator Last)
 {
 
 	// NOTE: this method is launched only during color pass therefore we don't bother with mode test here
@@ -4679,7 +4679,7 @@ void opengl33_renderer::Render_Alpha(cell_sequence::reverse_iterator First, cell
 	}
 }
 
-void opengl33_renderer::Render_Alpha(TAnimModel *Instance)
+void opengl46_renderer::Render_Alpha(TAnimModel *Instance)
 {
 
 	if (false == Instance->m_visible) { return; }
@@ -4741,7 +4741,7 @@ void opengl33_renderer::Render_Alpha(TAnimModel *Instance)
 	}
 }
 
-void opengl33_renderer::Render_Alpha(TTraction *Traction)
+void opengl46_renderer::Render_Alpha(TTraction *Traction)
 {
 	glDebug("Render_Alpha TTraction");
 
@@ -4786,7 +4786,7 @@ void opengl33_renderer::Render_Alpha(TTraction *Traction)
 		glLineWidth(1.0f);
 }
 
-void opengl33_renderer::Render_editor_overlay()
+void opengl46_renderer::Render_editor_overlay()
 {
 	if (false == EditorModeFlag || EditorOverlay.batches.empty())
 		return;
@@ -4835,7 +4835,7 @@ void opengl33_renderer::Render_editor_overlay()
 	::glPopMatrix();
 }
 
-void opengl33_renderer::Render_Alpha(scene::lines_node const &Lines)
+void opengl46_renderer::Render_Alpha(scene::lines_node const &Lines)
 {
 	glDebug("Render_Alpha scene::lines_node");
 
@@ -4868,7 +4868,7 @@ void opengl33_renderer::Render_Alpha(scene::lines_node const &Lines)
 		glLineWidth(1.0f);
 }
 
-bool opengl33_renderer::Render_Alpha(TDynamicObject *Dynamic)
+bool opengl46_renderer::Render_Alpha(TDynamicObject *Dynamic)
 {
 	if (!Global.render_cab && Global.pCamera.m_owner == Dynamic)
 		return false;
@@ -4949,7 +4949,7 @@ bool opengl33_renderer::Render_Alpha(TDynamicObject *Dynamic)
 	return true;
 }
 
-bool opengl33_renderer::Render_Alpha(TModel3d *Model, material_data const *Material, float const Squaredistance)
+bool opengl46_renderer::Render_Alpha(TModel3d *Model, material_data const *Material, float const Squaredistance)
 {
 
 	auto alpha = (Material != nullptr ? Material->textures_alpha : 0x30300030);
@@ -4975,7 +4975,7 @@ bool opengl33_renderer::Render_Alpha(TModel3d *Model, material_data const *Mater
 	return true;
 }
 
-bool opengl33_renderer::Render_Alpha(TModel3d *Model, material_data const *Material, float const Squaredistance, glm::dvec3 const &Position, glm::vec3 const &Angle)
+bool opengl46_renderer::Render_Alpha(TModel3d *Model, material_data const *Material, float const Squaredistance, glm::dvec3 const &Position, glm::vec3 const &Angle)
 {
 	::glPushMatrix();
 	::glTranslated(Position.x, Position.y, Position.z);
@@ -4994,7 +4994,7 @@ bool opengl33_renderer::Render_Alpha(TModel3d *Model, material_data const *Mater
 }
 
 // characters of a text display, laid out in a row. the text can be encoded in utf-8 or in windows-1250
-void opengl33_renderer::Render_Alpha_text(TSubModel *Submodel)
+void opengl46_renderer::Render_Alpha_text(TSubModel *Submodel)
 {
 	if (TSubModel::pasText == nullptr)
 	{
@@ -5008,7 +5008,7 @@ void opengl33_renderer::Render_Alpha_text(TSubModel *Submodel)
 	}
 }
 
-void opengl33_renderer::Render_Alpha(TSubModel *Submodel)
+void opengl46_renderer::Render_Alpha(TSubModel *Submodel)
 {
 	// renderowanie przezroczystych przez DL
 	if ((Submodel->iVisible) && (TSubModel::fSquareDist >= Submodel->fSquareMinDist) && (TSubModel::fSquareDist < Submodel->fSquareMaxDist) && (false == m_previewing || Submodel->fVisible > 0.f))
@@ -5250,7 +5250,7 @@ void opengl33_renderer::Render_Alpha(TSubModel *Submodel)
 			Render_Alpha(Submodel->Next);
 };
 
-bool opengl33_renderer::Debug_Ui_State(std::optional<bool> param)
+bool opengl46_renderer::Debug_Ui_State(std::optional<bool> param)
 {
     if (param) {
         debug_ui_active = *param;
@@ -5260,7 +5260,7 @@ bool opengl33_renderer::Debug_Ui_State(std::optional<bool> param)
 }
 
 // utility methods
-void opengl33_renderer::Update_Pick_Control()
+void opengl46_renderer::Update_Pick_Control()
 {
 	if (!m_picking_pbo->is_busy())
 	{
@@ -5305,7 +5305,7 @@ void opengl33_renderer::Update_Pick_Control()
 	}
 }
 
-void opengl33_renderer::Update_Pick_Node()
+void opengl46_renderer::Update_Pick_Node()
 {
 	if (!m_picking_node_pbo->is_busy())
 	{
@@ -5344,7 +5344,7 @@ void opengl33_renderer::Update_Pick_Node()
 	}
 }
 
-void opengl33_renderer::Pick_Control_Callback(std::function<void(TSubModel const *, const glm::vec2 pos)> callback)
+void opengl46_renderer::Pick_Control_Callback(std::function<void(TSubModel const *, const glm::vec2 pos)> callback)
 {
   if (!Global.render_cab) {
     callback(nullptr, glm::vec2());
@@ -5353,12 +5353,12 @@ void opengl33_renderer::Pick_Control_Callback(std::function<void(TSubModel const
 	m_control_pick_requests.push_back(callback);
 }
 
-void opengl33_renderer::Pick_Node_Callback(std::function<void(scene::basic_node *)> callback)
+void opengl46_renderer::Pick_Node_Callback(std::function<void(scene::basic_node *)> callback)
 {
 	m_node_pick_requests.push_back(callback);
 }
 
-glm::dvec3 opengl33_renderer::Update_Mouse_Position()
+glm::dvec3 opengl46_renderer::Update_Mouse_Position()
 {
 	if (!m_depth_pointer_pbo->is_busy())
 	{
@@ -5411,7 +5411,7 @@ glm::dvec3 opengl33_renderer::Update_Mouse_Position()
 	return m_colorpass.pass_camera.position() + glm::dvec3{m_worldmousecoordinates};
 }
 
-void opengl33_renderer::Update(double const Deltatime)
+void opengl46_renderer::Update(double const Deltatime)
 {
 	Update_Pick_Control();
 	Update_Pick_Node();
@@ -5500,19 +5500,19 @@ void opengl33_renderer::Update(double const Deltatime)
 }
 
 // debug performance string
-std::string const &opengl33_renderer::info_times() const
+std::string const &opengl46_renderer::info_times() const
 {
 
 	return m_debugtimestext;
 }
 
-std::string const &opengl33_renderer::info_stats() const
+std::string const &opengl46_renderer::info_stats() const
 {
 
 	return m_debugstatstext;
 }
 
-void opengl33_renderer::MakeScreenshot()
+void opengl46_renderer::MakeScreenshot()
 {
 	screenshot_manager::make_screenshot();
 }
@@ -5530,7 +5530,7 @@ float const preview_fieldofview{30.f};
 float const preview_background{16.f};
 } // namespace
 
-void opengl33_renderer::Preview_Bounds(TSubModel const *Submodel, glm::dmat4 const &Transform, glm::dvec3 &Min, glm::dvec3 &Max) const
+void opengl46_renderer::Preview_Bounds(TSubModel const *Submodel, glm::dmat4 const &Transform, glm::dvec3 &Min, glm::dvec3 &Max) const
 {
 	// same walk as the one of Render(TSubModel *) bar the range checks, which leave out parts only for the bounds to be smaller
 	for (auto const *submodel{Submodel}; submodel != nullptr; submodel = submodel->Next)
@@ -5557,7 +5557,7 @@ void opengl33_renderer::Preview_Bounds(TSubModel const *Submodel, glm::dmat4 con
 	}
 }
 
-bool opengl33_renderer::Preview_Targets(int const Size)
+bool opengl46_renderer::Preview_Targets(int const Size)
 {
 	if (m_preview.size == Size)
 	{
@@ -5597,7 +5597,7 @@ bool opengl33_renderer::Preview_Targets(int const Size)
 	return true;
 }
 
-void opengl33_renderer::Preview_Model(TAnimModel *Instance, float const Squaredistance, bool const Alpha)
+void opengl46_renderer::Preview_Model(TAnimModel *Instance, float const Squaredistance, bool const Alpha)
 {
 	// the placement of Render(TAnimModel *), without its range and visibility tests
 	::glPushMatrix();
@@ -5619,7 +5619,7 @@ void opengl33_renderer::Preview_Model(TAnimModel *Instance, float const Squaredi
 	::glPopMatrix();
 }
 
-void opengl33_renderer::Preview_Color(TAnimModel *Instance, float const Squaredistance, int const Size, glm::dvec3 const &Eye, glm::mat4 const &View, glm::mat4 const &Projection, bool const Shadows)
+void opengl46_renderer::Preview_Color(TAnimModel *Instance, float const Squaredistance, int const Size, glm::dvec3 const &Eye, glm::mat4 const &View, glm::mat4 const &Projection, bool const Shadows)
 {
 	m_renderpass.draw_mode = rendermode::color;
 	m_renderpass.pass_camera.position() = Eye;
@@ -5687,7 +5687,7 @@ void opengl33_renderer::Preview_Color(TAnimModel *Instance, float const Squaredi
 	setup_shadow_unbind_map();
 }
 
-bool opengl33_renderer::Render_Preview(TAnimModel *Instance, int const Size, int const Margin, bool const Shadows, std::vector<std::uint8_t> &Image)
+bool opengl46_renderer::Render_Preview(TAnimModel *Instance, int const Size, int const Margin, bool const Shadows, std::vector<std::uint8_t> &Image)
 {
 	if ((Instance == nullptr) || (Instance->pModel == nullptr) || (Size <= 0) || (Margin < 0) || (Margin * 2 >= Size))
 	{
@@ -5714,7 +5714,7 @@ bool opengl33_renderer::Render_Preview(TAnimModel *Instance, int const Size, int
 
 	glfwMakeContextCurrent(m_window);
 	opengl_texture::reset_unit_cache();
-	gfx::opengl33_vaogeometrybank::reset();
+	gfx::opengl46_vaogeometrybank::reset();
 	m_previewing = true;
 	// lights and visibility of the submodels, for this instance
 	Instance->RaAnimate(m_framestamp);
@@ -5860,7 +5860,7 @@ bool opengl33_renderer::Render_Preview(TAnimModel *Instance, int const Size, int
 		glDisable(GL_FRAMEBUFFER_SRGB);
 	opengl_texture::reset_unit_cache();
 	// the post processing binds its own vertex array, which the geometry banks don't know about
-	gfx::opengl33_vaogeometrybank::reset();
+	gfx::opengl46_vaogeometrybank::reset();
 
 	auto const targetpixels{static_cast<std::size_t>(targetsize) * targetsize};
 	std::vector<std::uint8_t> colors(targetpixels * 4);
@@ -5924,7 +5924,7 @@ bool opengl33_renderer::Render_Preview(TAnimModel *Instance, int const Size, int
 	return true;
 }
 
-void opengl33_renderer::Update_Lights(light_array &Lights)
+void opengl46_renderer::Update_Lights(light_array &Lights)
 {
 	glDebug("Update_Lights");
 
@@ -6088,7 +6088,7 @@ void opengl33_renderer::Update_Lights(light_array &Lights)
 	light_ubo->update(light_ubs);
 }
 
-bool opengl33_renderer::Init_caps()
+bool opengl46_renderer::Init_caps()
 {
 	std::string gl_renderer((char *)glGetString(GL_RENDERER));
 	std::string gl_vendor((char *)glGetString(GL_VENDOR));
@@ -6185,46 +6185,46 @@ bool opengl33_renderer::Init_caps()
 	return true;
 }
 
-glm::vec3 opengl33_renderer::pick_color(std::size_t const Index)
+glm::vec3 opengl46_renderer::pick_color(std::size_t const Index)
 {
 	return glm::vec3{((Index & 0xff0000) >> 16) / 255.0f, ((Index & 0x00ff00) >> 8) / 255.0f, (Index & 0x0000ff) / 255.0f};
 }
 
-std::size_t opengl33_renderer::pick_index(glm::ivec3 const &Color)
+std::size_t opengl46_renderer::pick_index(glm::ivec3 const &Color)
 {
 	return Color.b + (Color.g * 256) + (Color.r * 256 * 256);
 }
 
-std::unique_ptr<gfx_renderer> opengl33_renderer::create_func()
+std::unique_ptr<gfx_renderer> opengl46_renderer::create_func()
 {
-    return std::unique_ptr<gfx_renderer>(new opengl33_renderer());
+    return std::unique_ptr<gfx_renderer>(new opengl46_renderer());
 }
 
-bool opengl33_renderer::renderer_register = gfx_renderer_factory::get_instance()->register_backend("modern", opengl33_renderer::create_func);
+bool opengl46_renderer::renderer_register = gfx_renderer_factory::get_instance()->register_backend("modern", opengl46_renderer::create_func);
 
-bool opengl33_renderer::opengl33_imgui_renderer::Init()
+bool opengl46_renderer::opengl46_imgui_renderer::Init()
 {
 	crashreport_add_info("imgui_ver", "gl3");
 	return ImGui_ImplOpenGL3_Init("#version 330 core");
 }
 
-void opengl33_renderer::opengl33_imgui_renderer::Shutdown()
+void opengl46_renderer::opengl46_imgui_renderer::Shutdown()
 {
 	ImGui_ImplOpenGL3_Shutdown();
 }
 
-void opengl33_renderer::opengl33_imgui_renderer::BeginFrame()
+void opengl46_renderer::opengl46_imgui_renderer::BeginFrame()
 {
 	ImGui_ImplOpenGL3_NewFrame();
 }
 
-void opengl33_renderer::opengl33_imgui_renderer::Render()
+void opengl46_renderer::opengl46_imgui_renderer::Render()
 {
 	gl::buffer::unbind(gl::buffer::ARRAY_BUFFER);
 	ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
 }
 
-std::uint64_t opengl33_renderer::opengl33_imgui_renderer::Create_Image(std::uint8_t const *Rgba, int const Width, int const Height)
+std::uint64_t opengl46_renderer::opengl46_imgui_renderer::Create_Image(std::uint8_t const *Rgba, int const Width, int const Height)
 {
 	// the ui colours are made linear in its shaders, the image is too, by sampling it as srgb. the bindings the renderer
 	// keeps track of are put back as they were
@@ -6248,7 +6248,7 @@ std::uint64_t opengl33_renderer::opengl33_imgui_renderer::Create_Image(std::uint
 	return image;
 }
 
-void opengl33_renderer::opengl33_imgui_renderer::Release_Image(std::uint64_t const Image)
+void opengl46_renderer::opengl46_imgui_renderer::Release_Image(std::uint64_t const Image)
 {
 	auto const image{static_cast<GLuint>(Image)};
 	glDeleteTextures(1, &image);
diff --git a/rendering/opengl33renderer.h b/rendering/opengl46/opengl46renderer.h
similarity index 97%
rename from rendering/opengl33renderer.h
rename to rendering/opengl46/opengl46renderer.h
index b580e39f..113e7343 100644
--- a/rendering/opengl33renderer.h
+++ b/rendering/opengl46/opengl46renderer.h
@@ -11,10 +11,10 @@ http://mozilla.org/MPL/2.0/.
 
 #include "rendering/renderer.h"
 #include "rendering/openglcamera.h"
-#include "rendering/opengl33light.h"
-#include "rendering/opengl33particles.h"
-#include "rendering/opengl33skydome.h"
-#include "rendering/opengl33precipitation.h"
+#include "rendering/opengl46/opengl46light.h"
+#include "rendering/opengl46/opengl46particles.h"
+#include "rendering/opengl46/opengl46skydome.h"
+#include "rendering/opengl46/opengl46precipitation.h"
 #include "simulation/simulationenvironment.h"
 #include "scene/scene.h"
 #include "world/MemCell.h"
@@ -29,15 +29,15 @@ http://mozilla.org/MPL/2.0/.
 #include "gl/glsl_common.h"
 #include "gl/pbo.h"
 #include "gl/query.h"
-#include "rendering/opengl33terrain.h"
+#include "rendering/opengl46/opengl46terrain.h"
 
 // bare-bones render controller, in lack of anything better yet
-class opengl33_renderer : public gfx_renderer {
+class opengl46_renderer : public gfx_renderer {
   public:
 // constructors
-    opengl33_renderer() = default;
+    opengl46_renderer() = default;
 // destructor
-    ~opengl33_renderer() {}
+    ~opengl46_renderer() {}
 // methods
     bool
         Init( GLFWwindow *Window ) override;
@@ -260,7 +260,7 @@ class opengl33_renderer : public gfx_renderer {
 
 	viewport_config *m_current_viewport = nullptr;
 
-	typedef std::vector<opengl33_light> opengllight_array;
+	typedef std::vector<opengl46_light> opengllight_array;
 
 	// methods
     std::unique_ptr<gl::program> make_shader(std::string v, std::string f);
@@ -355,8 +355,8 @@ class opengl33_renderer : public gfx_renderer {
 	gfx::geometrybank_manager m_geometry;
 	material_manager m_materials;
 	texture_manager m_textures;
-	opengl33_terrain_materials m_terrainmaterials{m_materials, m_textures};
-	opengl33_light m_sunlight;
+	opengl46_terrain_materials m_terrainmaterials{m_materials, m_textures};
+	opengl46_light m_sunlight;
 	opengllight_array m_lights;
 	/*
 	    float m_sunandviewangle; // cached dot product of sunlight and camera vectors
@@ -377,9 +377,9 @@ class opengl33_renderer : public gfx_renderer {
 	bool m_environmentready{false}; // the environment map was drawn whole at least once
 	double m_environmentupdatetime{0}; // time of the most recent environment map update
 	glm::dvec3 m_environmentupdatelocation; // coordinates of most recent environment map update
-    opengl33_skydome m_skydomerenderer;
-    opengl33_precipitation m_precipitationrenderer;
-    opengl33_particles m_particlerenderer; // particle visualization subsystem
+    opengl46_skydome m_skydomerenderer;
+    opengl46_precipitation m_precipitationrenderer;
+    opengl46_particles m_particlerenderer; // particle visualization subsystem
 
 	unsigned int m_framestamp; // id of currently rendered gfx frame
 	float m_framerate;
@@ -576,7 +576,7 @@ class opengl33_renderer : public gfx_renderer {
 
     static bool renderer_register;
 
-	class opengl33_imgui_renderer : public imgui_renderer
+	class opengl46_imgui_renderer : public imgui_renderer
 	{
 		virtual bool Init() override;
 		virtual void Shutdown() override;
diff --git a/rendering/opengl33skydome.cpp b/rendering/opengl46/opengl46skydome.cpp
similarity index 95%
rename from rendering/opengl33skydome.cpp
rename to rendering/opengl46/opengl46skydome.cpp
index cbceeed4..74a4abe1 100644
--- a/rendering/opengl33skydome.cpp
+++ b/rendering/opengl46/opengl46skydome.cpp
@@ -8,11 +8,11 @@ http://mozilla.org/MPL/2.0/.
 */
 
 #include "stdafx.h"
-#include "rendering/opengl33skydome.h"
+#include "rendering/opengl46/opengl46skydome.h"
 
 #include "simulation/simulationenvironment.h"
 
-void opengl33_skydome::update() {
+void opengl46_skydome::update() {
 
     if (!m_shader) {
 
@@ -55,7 +55,7 @@ void opengl33_skydome::update() {
 }
 
 // render skydome to screen
-void opengl33_skydome::render() {
+void opengl46_skydome::render() {
 
     if( ( !m_shader) || ( !m_vao ) ) { return; }
 
diff --git a/rendering/opengl33skydome.h b/rendering/opengl46/opengl46skydome.h
similarity index 87%
rename from rendering/opengl33skydome.h
rename to rendering/opengl46/opengl46skydome.h
index 287ac511..afb3bd38 100644
--- a/rendering/opengl33skydome.h
+++ b/rendering/opengl46/opengl46skydome.h
@@ -13,13 +13,13 @@ http://mozilla.org/MPL/2.0/.
 #include "gl/shader.h"
 #include "gl/buffer.h"
 
-class opengl33_skydome {
+class opengl46_skydome {
 
 public:
 // constructors
-    opengl33_skydome() = default;
+    opengl46_skydome() = default;
 // destructor
-    ~opengl33_skydome() = default;
+    ~opengl46_skydome() = default;
 // methods
     // updates data stores on the opengl end. NOTE: unbinds buffers
     void update();
diff --git a/rendering/opengl33terrain.cpp b/rendering/opengl46/opengl46terrain.cpp
similarity index 95%
rename from rendering/opengl33terrain.cpp
rename to rendering/opengl46/opengl46terrain.cpp
index 019cb5f2..bfca0a20 100644
--- a/rendering/opengl33terrain.cpp
+++ b/rendering/opengl46/opengl46terrain.cpp
@@ -8,9 +8,9 @@ http://mozilla.org/MPL/2.0/.
 */
 
 #include "stdafx.h"
-#include "rendering/opengl33terrain.h"
+#include "rendering/opengl46/opengl46terrain.h"
 
-#include "rendering/opengl33geometrybank.h"
+#include "rendering/opengl46/opengl46geometrybank.h"
 #include "utilities/Globals.h"
 #include "utilities/Logs.h"
 
@@ -39,7 +39,7 @@ void set_anisotropy(GLenum const Target)
 
 } // namespace
 
-bool opengl33_terrain_materials::init()
+bool opengl46_terrain_materials::init()
 {
 	if (m_state != 0)
 		return m_state > 0;
@@ -91,7 +91,7 @@ bool opengl33_terrain_materials::init()
 	return true;
 }
 
-texture_handle opengl33_terrain_materials::make_texture(std::string const &Name, GLenum const Target)
+texture_handle opengl46_terrain_materials::make_texture(std::string const &Name, GLenum const Target)
 {
 	auto const handle{m_textures.create(Name, false, GL_RGBA)};
 	auto &texture{m_textures.texture(handle)};
@@ -107,7 +107,7 @@ texture_handle opengl33_terrain_materials::make_texture(std::string const &Name,
 	return handle;
 }
 
-void opengl33_terrain_materials::make_storage(texture_array &Array, int const Layers)
+void opengl46_terrain_materials::make_storage(texture_array &Array, int const Layers)
 {
 	auto &texture{m_textures.texture(Array.handle)};
 	bind_for_upload(texture);
@@ -124,7 +124,7 @@ void opengl33_terrain_materials::make_storage(texture_array &Array, int const La
 	texture.data_components = GL_RGBA;
 }
 
-int opengl33_terrain_materials::layer_index(gfx::terrain_layer const &Layer)
+int opengl46_terrain_materials::layer_index(gfx::terrain_layer const &Layer)
 {
 	for (auto const &existing : m_layers)
 		if (existing.material == Layer.material && existing.size == Layer.size)
@@ -167,7 +167,7 @@ int opengl33_terrain_materials::layer_index(gfx::terrain_layer const &Layer)
 	return entry.index;
 }
 
-std::size_t opengl33_terrain_materials::acquire_slot(material_handle const Reuse)
+std::size_t opengl46_terrain_materials::acquire_slot(material_handle const Reuse)
 {
 	if (Reuse != null_handle)
 	{
@@ -234,7 +234,7 @@ std::size_t opengl33_terrain_materials::acquire_slot(material_handle const Reuse
 	return index;
 }
 
-material_handle opengl33_terrain_materials::make(material_handle const Reuse, std::vector<gfx::terrain_layer> const &Layers, int const Samples, std::uint8_t const *Weights, glm::vec3 const &Placement)
+material_handle opengl46_terrain_materials::make(material_handle const Reuse, std::vector<gfx::terrain_layer> const &Layers, int const Samples, std::uint8_t const *Weights, glm::vec3 const &Placement)
 {
 	if (Layers.empty() || false == init())
 		return null_handle;
@@ -303,7 +303,7 @@ material_handle opengl33_terrain_materials::make(material_handle const Reuse, st
 	return entry.material;
 }
 
-void opengl33_terrain_materials::release(material_handle const Material)
+void opengl46_terrain_materials::release(material_handle const Material)
 {
 	auto const lookup{m_slotof.find(Material)};
 	if (lookup == m_slotof.end() || false == m_slots[lookup->second].used)
@@ -312,7 +312,7 @@ void opengl33_terrain_materials::release(material_handle const Material)
 	m_free.push_back(lookup->second);
 }
 
-bool opengl33_terrain_materials::copy_layer(layer &Layer)
+bool opengl46_terrain_materials::copy_layer(layer &Layer)
 {
 	auto const &material{m_materials.material(Layer.material)};
 	auto const slot = [&](char const *Name, int const Fallback) {
@@ -378,7 +378,7 @@ bool opengl33_terrain_materials::copy_layer(layer &Layer)
 	return true;
 }
 
-void opengl33_terrain_materials::update()
+void opengl46_terrain_materials::update()
 {
 	if (false == m_pending || m_state <= 0)
 		return;
@@ -430,5 +430,5 @@ void opengl33_terrain_materials::update()
 		::glDisable(GL_FRAMEBUFFER_SRGB);
 	::glDepthMask(GL_TRUE);
 	opengl_texture::reset_unit_cache();
-	gfx::opengl33_vaogeometrybank::reset();
+	gfx::opengl46_vaogeometrybank::reset();
 }
diff --git a/rendering/opengl33terrain.h b/rendering/opengl46/opengl46terrain.h
similarity index 96%
rename from rendering/opengl33terrain.h
rename to rendering/opengl46/opengl46terrain.h
index 60d12113..35fe49ff 100644
--- a/rendering/opengl33terrain.h
+++ b/rendering/opengl46/opengl46terrain.h
@@ -23,10 +23,10 @@ http://mozilla.org/MPL/2.0/.
 // materials of the heightmap terrain for the opengl 3.3 renderer (shader mat_terrain).
 // the textures of the layer materials are copied into texture arrays shared by all chunks; each chunk gets a material
 // of its own, with textures holding the weights of its layers and a table of what its layers are
-class opengl33_terrain_materials
+class opengl46_terrain_materials
 {
   public:
-	opengl33_terrain_materials(material_manager &Materials, texture_manager &Textures) : m_materials(Materials), m_textures(Textures) {}
+	opengl46_terrain_materials(material_manager &Materials, texture_manager &Textures) : m_materials(Materials), m_textures(Textures) {}
 
 	// see gfx_renderer::Terrain_Material. returns null_handle if the terrain shader can't be used
 	material_handle make(material_handle const Reuse, std::vector<gfx::terrain_layer> const &Layers, int const Samples, std::uint8_t const *Weights, glm::vec3 const &Placement);
diff --git a/scene/scene.h b/scene/scene.h
index c2369584..400fdac3 100644
--- a/scene/scene.h
+++ b/scene/scene.h
@@ -26,7 +26,7 @@ http://mozilla.org/MPL/2.0/.
 #include "input/command.h"
 #include "utilities/utilities.h"
 
-class opengl33_renderer;
+class opengl46_renderer;
 
 namespace scene {
 
@@ -95,7 +95,7 @@ struct terrain_block {
 // TBD, TODO: replace with quadtree scheme?
 class basic_cell {
 
-    friend opengl33_renderer;
+    friend opengl46_renderer;
 
 public:
 // constructors
@@ -292,7 +292,7 @@ public:
 // basic scene partitioning structure, holds terrain geometry and collection of cells
 class basic_section {
 
-    friend opengl33_renderer;
+    friend opengl46_renderer;
 
 public:
 // constructors
@@ -415,7 +415,7 @@ public:
 // top-level of scene spatial structure, holds collection of sections
 class basic_region {
 
-    friend opengl33_renderer;
+    friend opengl46_renderer;
 
 public:
 // constructors
diff --git a/simulation/simulationenvironment.h b/simulation/simulationenvironment.h
index 84082470..fcc93584 100644
--- a/simulation/simulationenvironment.h
+++ b/simulation/simulationenvironment.h
@@ -17,12 +17,12 @@ http://mozilla.org/MPL/2.0/.
 #include "rendering/precipitation.h"
 #include "audio/sound.h"
 
-class opengl33_renderer;
+class opengl46_renderer;
 
 // wrapper for environment elements -- sky, sun, stars, clouds etc
 class world_environment {
 
-    friend opengl33_renderer;
+    friend opengl46_renderer;
 
 public:
 // methods
diff --git a/utilities/Classes.h b/utilities/Classes.h
index f4bb3c7a..88e0ddd3 100644
--- a/utilities/Classes.h
+++ b/utilities/Classes.h
@@ -12,7 +12,7 @@ http://mozilla.org/MPL/2.0/.
 //---------------------------------------------------------------------------
 // Ra: zestaw klas do robienia wskaźników, aby uporządkować nagłówki
 //---------------------------------------------------------------------------
-class opengl33_renderer;
+class opengl46_renderer;
 class TTrack; // odcinek trajektorii
 class basic_event;
 class TTrain; // pojazd sterowany
diff --git a/vehicle/DynObj.h b/vehicle/DynObj.h
index 687dafe4..da7b347d 100644
--- a/vehicle/DynObj.h
+++ b/vehicle/DynObj.h
@@ -188,7 +188,7 @@ struct material_data {
 
 class TDynamicObject { // klasa pojazdu
 
-    friend opengl33_renderer;
+    friend opengl46_renderer;
 
 public:
     static bool bDynamicRemove; // moved from ground
diff --git a/widgets/map.cpp b/widgets/map.cpp
index 195fed6c..6d098b0f 100644
--- a/widgets/map.cpp
+++ b/widgets/map.cpp
@@ -16,7 +16,7 @@ ui::map_panel::map_panel() : ui_panel(STR_C("Map"), false)
 	window_flags = ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoScrollWithMouse;
 
 #ifdef WITH_OPENGL_MODERN
-    opengl33_renderer *gl33 = dynamic_cast<opengl33_renderer*>(GfxRenderer.get());
+    opengl46_renderer *gl33 = dynamic_cast<opengl46_renderer*>(GfxRenderer.get());
     if (!gl33) {
         ErrorLog("map not supported on old renderer");
         return;
@@ -144,7 +144,7 @@ void ui::map_panel::render_map_texture(glm::mat4 transform, glm::vec2 surface_si
 	scene_ubo->bind_uniform();
 
 #ifdef WITH_OPENGL_MODERN
-    opengl33_renderer *gl33 = dynamic_cast<opengl33_renderer*>(GfxRenderer.get());
+    opengl46_renderer *gl33 = dynamic_cast<opengl46_renderer*>(GfxRenderer.get());
 
     gl33->Draw_Geometry(m_section_handles.begin(), m_section_handles.end());
 
@@ -421,7 +421,7 @@ void ui::handle_map_object_hover(std::shared_ptr<map::map_object> &obj)
 			for (int i = 0; i < iMaxNumLights; i++)
 			{
 #ifdef WITH_OPENGL_MODERN
-                dynamic_cast<opengl33_renderer*>(GfxRenderer.get())->Update_AnimModel(model); // update lamp opacities
+                dynamic_cast<opengl46_renderer*>(GfxRenderer.get())->Update_AnimModel(model); // update lamp opacities
 #endif
 				auto state = model->LightGet(i);
 				if (!state)
@@ -477,7 +477,7 @@ void ui::semaphore_window::render_content()
 		for (int i = 0; i < iMaxNumLights; i++)
 		{
 #ifdef WITH_OPENGL_MODERN
-            dynamic_cast<opengl33_renderer*>(GfxRenderer.get())->Update_AnimModel(model); // update lamp opacities
+            dynamic_cast<opengl46_renderer*>(GfxRenderer.get())->Update_AnimModel(model); // update lamp opacities
 #endif
 			auto state = model->LightGet(i);
 			if (!state)
diff --git a/widgets/map.h b/widgets/map.h
index 9cb8a064..3a673ddf 100644
--- a/widgets/map.h
+++ b/widgets/map.h
@@ -8,7 +8,7 @@
 #include "gl/framebuffer.h"
 #include "rendering/frustum.h"
 #ifdef WITH_OPENGL_MODERN
-#include "rendering/opengl33renderer.h"
+#include "rendering/opengl46/opengl46renderer.h"
 #endif
 
 namespace ui
diff --git a/world/Track.h b/world/Track.h
index 51bb1d6b..24ad732b 100644
--- a/world/Track.h
+++ b/world/Track.h
@@ -151,7 +151,7 @@ private:
 // trajektoria ruchu - opakowanie
 class TTrack : public scene::basic_node
 {
-    friend opengl33_renderer;
+    friend opengl46_renderer;
     // NOTE: temporary arrangement
     friend itemproperties_panel;
     friend class editor_track;
diff --git a/world/Traction.h b/world/Traction.h
index 6a041f28..54e71d1c 100644
--- a/world/Traction.h
+++ b/world/Traction.h
@@ -20,7 +20,7 @@ class TTractionPowerSource;
 
 class TTraction : public scene::basic_node
 {
-    friend opengl33_renderer;
+    friend opengl46_renderer;
 
   public: // na razie
     TTractionPowerSource *psPower[ 2 ] { nullptr, nullptr }; // najbliższe zasilacze z obu kierunków