Scale color output in the mobile renderer to provide HDR support

servers/rendering/renderer_rd/effects_rd.cpp

@@ -812,6 +812,7 @@ void EffectsRD::tonemapper(RID p_source_color, RID p_dst_framebuffer, const Tone
 	tonemap.push_constant.exposure = p_settings.exposure;
 	tonemap.push_constant.white = p_settings.white;
 	tonemap.push_constant.auto_exposure_grey = p_settings.auto_exposure_grey;
+	tonemap.push_constant.luminance_multiplier = p_settings.luminance_multiplier;
 
 	tonemap.push_constant.use_color_correction = p_settings.use_color_correction;
 
@@ -864,6 +865,7 @@ void EffectsRD::tonemapper(RD::DrawListID p_subpass_draw_list, RID p_source_colo
 	tonemap.push_constant.use_color_correction = p_settings.use_color_correction;
 
 	tonemap.push_constant.use_debanding = p_settings.use_debanding;
+	tonemap.push_constant.luminance_multiplier = p_settings.luminance_multiplier;
 
 	RD::get_singleton()->draw_list_bind_render_pipeline(p_subpass_draw_list, tonemap.pipelines[mode].get_render_pipeline(RD::INVALID_ID, p_dst_format_id, false, RD::get_singleton()->draw_list_get_current_pass()));
 	RD::get_singleton()->draw_list_bind_uniform_set(p_subpass_draw_list, _get_uniform_set_for_input(p_source_color), 0);

servers/rendering/renderer_rd/effects_rd.h

@@ -255,7 +255,7 @@ private:
 		float exposure; //  4 - 84
 		float white; //  4 - 88
 		float auto_exposure_grey; //  4 - 92
-		uint32_t pad2; //  4 - 96
+		float luminance_multiplier; //  4 - 96
 
 		float pixel_size[2]; //  8 - 104
 		uint32_t use_fxaa; //  4 - 108
@@ -308,7 +308,7 @@ private:
 		float exposure_adjust;
 		float min_luminance;
 		float max_luminance;
-		float pad[1];
+		uint32_t pad1;
 	};
 
 	struct LuminanceReduceFragment {
@@ -818,6 +818,7 @@ public:
 		bool use_auto_exposure = false;
 		float auto_exposure_grey = 0.5;
 		RID exposure_texture;
+		float luminance_multiplier = 1.0;
 
 		bool use_bcs = false;
 		float brightness = 1.0;

servers/rendering/renderer_rd/forward_mobile/render_forward_mobile.cpp

@@ -271,6 +271,12 @@ bool RenderForwardMobile::free(RID p_rid) {
 
 /* Render functions */
 
+float RenderForwardMobile::_render_buffers_get_luminance_multiplier() {
+	// On mobile renderer we need to multiply source colors by 2 due to using a UNORM buffer
+	// and multiplying by the output color during 3D rendering by 0.5
+	return 2.0;
+}
+
 RD::DataFormat RenderForwardMobile::_render_buffers_get_color_format() {
 	// Using 32bit buffers enables AFBC on mobile devices which should have a definite performance improvement (MALI G710 and newer support this on 64bit RTs)
 	return RD::DATA_FORMAT_A2B10G10R10_UNORM_PACK32;
@@ -631,7 +637,7 @@ void RenderForwardMobile::_render_scene(RenderDataRD *p_render_data, const Color
 
 			RID sky_rid = env->sky;
 			if (sky_rid.is_valid()) {
-				sky.update(env, projection, p_render_data->cam_transform, time);
+				sky.update(env, projection, p_render_data->cam_transform, time, _render_buffers_get_luminance_multiplier());
 				radiance_texture = sky.sky_get_radiance_texture_rd(sky_rid);
 			} else {
 				// do not try to draw sky if invalid
@@ -750,9 +756,9 @@ void RenderForwardMobile::_render_scene(RenderDataRD *p_render_data, const Color
 				CameraMatrix correction;
 				correction.set_depth_correction(true);
 				CameraMatrix projection = correction * p_render_data->cam_projection;
-				sky.draw(draw_list, env, framebuffer, 1, &projection, p_render_data->cam_transform, time);
+				sky.draw(draw_list, env, framebuffer, 1, &projection, p_render_data->cam_transform, time, _render_buffers_get_luminance_multiplier());
 			} else {
-				sky.draw(draw_list, env, framebuffer, p_render_data->view_count, p_render_data->view_projection, p_render_data->cam_transform, time);
+				sky.draw(draw_list, env, framebuffer, p_render_data->view_count, p_render_data->view_projection, p_render_data->cam_transform, time, _render_buffers_get_luminance_multiplier());
 			}
 
 			RD::get_singleton()->draw_command_end_label(); // Draw Sky Subpass

servers/rendering/renderer_rd/forward_mobile/render_forward_mobile.h

@@ -202,6 +202,7 @@ protected:
 		}
 	};
 
+	virtual float _render_buffers_get_luminance_multiplier() override;
 	virtual RD::DataFormat _render_buffers_get_color_format() override;
 	virtual bool _render_buffers_can_be_storage() override;
 

servers/rendering/renderer_rd/forward_mobile/scene_shader_forward_mobile.cpp

@@ -665,6 +665,8 @@ void SceneShaderForwardMobile::init(RendererStorageRD *p_storage, const String p
 		actions.global_buffer_array_variable = "global_variables.data";
 		actions.instance_uniform_index_variable = "draw_call.instance_uniforms_ofs";
 
+		actions.apply_luminance_multiplier = true; // apply luminance multiplier to screen texture
+
 		compiler.initialize(actions);
 	}
 

servers/rendering/renderer_rd/renderer_scene_render_rd.cpp

@@ -2237,6 +2237,7 @@ void RendererSceneRenderRD::_render_buffers_post_process_and_tonemap(const Rende
 			}
 		}
 
+		tonemap.luminance_multiplier = _render_buffers_get_luminance_multiplier();
 		tonemap.view_count = p_render_data->view_count;
 
 		storage->get_effects()->tonemapper(rb->texture, storage->render_target_get_rd_framebuffer(rb->render_target), tonemap);
@@ -2301,6 +2302,7 @@ void RendererSceneRenderRD::_post_process_subpass(RID p_source_texture, RID p_fr
 	tonemap.use_debanding = rb->use_debanding;
 	tonemap.texture_size = Vector2i(rb->width, rb->height);
 
+	tonemap.luminance_multiplier = _render_buffers_get_luminance_multiplier();
 	tonemap.view_count = p_render_data->view_count;
 
 	storage->get_effects()->tonemapper(draw_list, p_source_texture, RD::get_singleton()->framebuffer_get_format(p_framebuffer), tonemap);
@@ -2573,6 +2575,10 @@ float RendererSceneRenderRD::render_buffers_get_volumetric_fog_detail_spread(RID
 	return rb->volumetric_fog->spread;
 }
 
+float RendererSceneRenderRD::_render_buffers_get_luminance_multiplier() {
+	return 1.0;
+}
+
 RD::DataFormat RendererSceneRenderRD::_render_buffers_get_color_format() {
 	return RD::DATA_FORMAT_R16G16B16A16_SFLOAT;
 }

servers/rendering/renderer_rd/renderer_scene_render_rd.h

@@ -1190,6 +1190,7 @@ public:
 
 	/* render buffers */
 
+	virtual float _render_buffers_get_luminance_multiplier();
 	virtual RD::DataFormat _render_buffers_get_color_format();
 	virtual bool _render_buffers_can_be_storage();
 	virtual RID render_buffers_create() override;

servers/rendering/renderer_rd/renderer_scene_sky_rd.cpp

@@ -259,7 +259,7 @@ static _FORCE_INLINE_ void store_transform_3x3(const Basis &p_basis, float *p_ar
 	p_array[11] = 0;
 }
 
-void RendererSceneSkyRD::_render_sky(RD::DrawListID p_list, float p_time, RID p_fb, PipelineCacheRD *p_pipeline, RID p_uniform_set, RID p_texture_set, uint32_t p_view_count, const CameraMatrix *p_projections, const Basis &p_orientation, float p_multiplier, const Vector3 &p_position) {
+void RendererSceneSkyRD::_render_sky(RD::DrawListID p_list, float p_time, RID p_fb, PipelineCacheRD *p_pipeline, RID p_uniform_set, RID p_texture_set, uint32_t p_view_count, const CameraMatrix *p_projections, const Basis &p_orientation, float p_multiplier, const Vector3 &p_position, float p_luminance_multiplier) {
 	SkyPushConstant sky_push_constant;
 
 	memset(&sky_push_constant, 0, sizeof(SkyPushConstant));
@@ -276,6 +276,7 @@ void RendererSceneSkyRD::_render_sky(RD::DrawListID p_list, float p_time, RID p_
 	sky_push_constant.position[2] = p_position.z;
 	sky_push_constant.multiplier = p_multiplier;
 	sky_push_constant.time = p_time;
+	sky_push_constant.luminance_multiplier = p_luminance_multiplier;
 	store_transform_3x3(p_orientation, sky_push_constant.orientation);
 
 	RenderingDevice::FramebufferFormatID fb_format = RD::get_singleton()->framebuffer_get_format(p_fb);
@@ -1191,7 +1192,7 @@ void RendererSceneSkyRD::setup(RendererSceneEnvironmentRD *p_env, RID p_render_b
 	RD::get_singleton()->buffer_update(sky_scene_state.uniform_buffer, 0, sizeof(SkySceneState::UBO), &sky_scene_state.ubo);
 }
 
-void RendererSceneSkyRD::update(RendererSceneEnvironmentRD *p_env, const CameraMatrix &p_projection, const Transform3D &p_transform, double p_time) {
+void RendererSceneSkyRD::update(RendererSceneEnvironmentRD *p_env, const CameraMatrix &p_projection, const Transform3D &p_transform, double p_time, float p_luminance_multiplier) {
 	ERR_FAIL_COND(!p_env);
 
 	Sky *sky = get_sky(p_env->sky);
@@ -1283,7 +1284,7 @@ void RendererSceneSkyRD::update(RendererSceneEnvironmentRD *p_env, const CameraM
 				RID texture_uniform_set = sky->get_textures(storage, SKY_TEXTURE_SET_CUBEMAP_QUARTER_RES, sky_shader.default_shader_rd);
 
 				cubemap_draw_list = RD::get_singleton()->draw_list_begin(sky->reflection.layers[0].mipmaps[2].framebuffers[i], RD::INITIAL_ACTION_KEEP, RD::FINAL_ACTION_READ, RD::INITIAL_ACTION_KEEP, RD::FINAL_ACTION_DISCARD);
-				_render_sky(cubemap_draw_list, p_time, sky->reflection.layers[0].mipmaps[2].framebuffers[i], pipeline, material->uniform_set, texture_uniform_set, 1, &cm, local_view, multiplier, p_transform.origin);
+				_render_sky(cubemap_draw_list, p_time, sky->reflection.layers[0].mipmaps[2].framebuffers[i], pipeline, material->uniform_set, texture_uniform_set, 1, &cm, local_view, multiplier, p_transform.origin, p_luminance_multiplier);
 				RD::get_singleton()->draw_list_end();
 			}
 			RD::get_singleton()->draw_command_end_label();
@@ -1302,7 +1303,7 @@ void RendererSceneSkyRD::update(RendererSceneEnvironmentRD *p_env, const CameraM
 				RID texture_uniform_set = sky->get_textures(storage, SKY_TEXTURE_SET_CUBEMAP_HALF_RES, sky_shader.default_shader_rd);
 
 				cubemap_draw_list = RD::get_singleton()->draw_list_begin(sky->reflection.layers[0].mipmaps[1].framebuffers[i], RD::INITIAL_ACTION_KEEP, RD::FINAL_ACTION_READ, RD::INITIAL_ACTION_KEEP, RD::FINAL_ACTION_DISCARD);
-				_render_sky(cubemap_draw_list, p_time, sky->reflection.layers[0].mipmaps[1].framebuffers[i], pipeline, material->uniform_set, texture_uniform_set, 1, &cm, local_view, multiplier, p_transform.origin);
+				_render_sky(cubemap_draw_list, p_time, sky->reflection.layers[0].mipmaps[1].framebuffers[i], pipeline, material->uniform_set, texture_uniform_set, 1, &cm, local_view, multiplier, p_transform.origin, p_luminance_multiplier);
 				RD::get_singleton()->draw_list_end();
 			}
 			RD::get_singleton()->draw_command_end_label();
@@ -1317,7 +1318,7 @@ void RendererSceneSkyRD::update(RendererSceneEnvironmentRD *p_env, const CameraM
 			RID texture_uniform_set = sky->get_textures(storage, SKY_TEXTURE_SET_CUBEMAP, sky_shader.default_shader_rd);
 
 			cubemap_draw_list = RD::get_singleton()->draw_list_begin(sky->reflection.layers[0].mipmaps[0].framebuffers[i], RD::INITIAL_ACTION_KEEP, RD::FINAL_ACTION_READ, RD::INITIAL_ACTION_KEEP, RD::FINAL_ACTION_DISCARD);
-			_render_sky(cubemap_draw_list, p_time, sky->reflection.layers[0].mipmaps[0].framebuffers[i], pipeline, material->uniform_set, texture_uniform_set, 1, &cm, local_view, multiplier, p_transform.origin);
+			_render_sky(cubemap_draw_list, p_time, sky->reflection.layers[0].mipmaps[0].framebuffers[i], pipeline, material->uniform_set, texture_uniform_set, 1, &cm, local_view, multiplier, p_transform.origin, p_luminance_multiplier);
 			RD::get_singleton()->draw_list_end();
 		}
 		RD::get_singleton()->draw_command_end_label();
@@ -1435,7 +1436,7 @@ void RendererSceneSkyRD::draw(RendererSceneEnvironmentRD *p_env, bool p_can_cont
 		clear_colors.push_back(Color(0.0, 0.0, 0.0));
 
 		RD::DrawListID draw_list = RD::get_singleton()->draw_list_begin(sky->quarter_res_framebuffer, RD::INITIAL_ACTION_CLEAR, RD::FINAL_ACTION_READ, RD::INITIAL_ACTION_CLEAR, RD::FINAL_ACTION_DISCARD, clear_colors);
-		_render_sky(draw_list, p_time, sky->quarter_res_framebuffer, pipeline, material->uniform_set, texture_uniform_set, view_count, projections, sky_transform, multiplier, p_transform.origin);
+		_render_sky(draw_list, p_time, sky->quarter_res_framebuffer, pipeline, material->uniform_set, texture_uniform_set, view_count, projections, sky_transform, multiplier, p_transform.origin, 1.0);
 		RD::get_singleton()->draw_list_end();
 	}
 
@@ -1448,7 +1449,7 @@ void RendererSceneSkyRD::draw(RendererSceneEnvironmentRD *p_env, bool p_can_cont
 		clear_colors.push_back(Color(0.0, 0.0, 0.0));
 
 		RD::DrawListID draw_list = RD::get_singleton()->draw_list_begin(sky->half_res_framebuffer, RD::INITIAL_ACTION_CLEAR, RD::FINAL_ACTION_READ, RD::INITIAL_ACTION_CLEAR, RD::FINAL_ACTION_DISCARD, clear_colors);
-		_render_sky(draw_list, p_time, sky->half_res_framebuffer, pipeline, material->uniform_set, texture_uniform_set, view_count, projections, sky_transform, multiplier, p_transform.origin);
+		_render_sky(draw_list, p_time, sky->half_res_framebuffer, pipeline, material->uniform_set, texture_uniform_set, view_count, projections, sky_transform, multiplier, p_transform.origin, 1.0);
 		RD::get_singleton()->draw_list_end();
 	}
 
@@ -1462,11 +1463,11 @@ void RendererSceneSkyRD::draw(RendererSceneEnvironmentRD *p_env, bool p_can_cont
 	}
 
 	RD::DrawListID draw_list = RD::get_singleton()->draw_list_begin(p_fb, RD::INITIAL_ACTION_CONTINUE, p_can_continue_color ? RD::FINAL_ACTION_CONTINUE : RD::FINAL_ACTION_READ, RD::INITIAL_ACTION_CONTINUE, p_can_continue_depth ? RD::FINAL_ACTION_CONTINUE : RD::FINAL_ACTION_READ);
-	_render_sky(draw_list, p_time, p_fb, pipeline, material->uniform_set, texture_uniform_set, view_count, projections, sky_transform, multiplier, p_transform.origin);
+	_render_sky(draw_list, p_time, p_fb, pipeline, material->uniform_set, texture_uniform_set, view_count, projections, sky_transform, multiplier, p_transform.origin, 1.0);
 	RD::get_singleton()->draw_list_end();
 }
 
-void RendererSceneSkyRD::update_res_buffers(RendererSceneEnvironmentRD *p_env, uint32_t p_view_count, const CameraMatrix *p_projections, const Transform3D &p_transform, double p_time) {
+void RendererSceneSkyRD::update_res_buffers(RendererSceneEnvironmentRD *p_env, uint32_t p_view_count, const CameraMatrix *p_projections, const Transform3D &p_transform, double p_time, float p_luminance_multiplier) {
 	ERR_FAIL_COND(!p_env);
 
 	ERR_FAIL_COND(p_view_count == 0);
@@ -1542,7 +1543,7 @@ void RendererSceneSkyRD::update_res_buffers(RendererSceneEnvironmentRD *p_env, u
 		clear_colors.push_back(Color(0.0, 0.0, 0.0));
 
 		RD::DrawListID draw_list = RD::get_singleton()->draw_list_begin(sky->quarter_res_framebuffer, RD::INITIAL_ACTION_CLEAR, RD::FINAL_ACTION_READ, RD::INITIAL_ACTION_CLEAR, RD::FINAL_ACTION_DISCARD, clear_colors);
-		_render_sky(draw_list, p_time, sky->quarter_res_framebuffer, pipeline, material->uniform_set, texture_uniform_set, view_count, projections, sky_transform, multiplier, p_transform.origin);
+		_render_sky(draw_list, p_time, sky->quarter_res_framebuffer, pipeline, material->uniform_set, texture_uniform_set, view_count, projections, sky_transform, multiplier, p_transform.origin, p_luminance_multiplier);
 		RD::get_singleton()->draw_list_end();
 	}
 
@@ -1555,12 +1556,12 @@ void RendererSceneSkyRD::update_res_buffers(RendererSceneEnvironmentRD *p_env, u
 		clear_colors.push_back(Color(0.0, 0.0, 0.0));
 
 		RD::DrawListID draw_list = RD::get_singleton()->draw_list_begin(sky->half_res_framebuffer, RD::INITIAL_ACTION_CLEAR, RD::FINAL_ACTION_READ, RD::INITIAL_ACTION_CLEAR, RD::FINAL_ACTION_DISCARD, clear_colors);
-		_render_sky(draw_list, p_time, sky->half_res_framebuffer, pipeline, material->uniform_set, texture_uniform_set, view_count, projections, sky_transform, multiplier, p_transform.origin);
+		_render_sky(draw_list, p_time, sky->half_res_framebuffer, pipeline, material->uniform_set, texture_uniform_set, view_count, projections, sky_transform, multiplier, p_transform.origin, p_luminance_multiplier);
 		RD::get_singleton()->draw_list_end();
 	}
 }
 
-void RendererSceneSkyRD::draw(RD::DrawListID p_draw_list, RendererSceneEnvironmentRD *p_env, RID p_fb, uint32_t p_view_count, const CameraMatrix *p_projections, const Transform3D &p_transform, double p_time) {
+void RendererSceneSkyRD::draw(RD::DrawListID p_draw_list, RendererSceneEnvironmentRD *p_env, RID p_fb, uint32_t p_view_count, const CameraMatrix *p_projections, const Transform3D &p_transform, double p_time, float p_luminance_multiplier) {
 	ERR_FAIL_COND(!p_env);
 
 	ERR_FAIL_COND(p_view_count == 0);
@@ -1636,7 +1637,7 @@ void RendererSceneSkyRD::draw(RD::DrawListID p_draw_list, RendererSceneEnvironme
 		texture_uniform_set = sky_scene_state.fog_only_texture_uniform_set;
 	}
 
-	_render_sky(p_draw_list, p_time, p_fb, pipeline, material->uniform_set, texture_uniform_set, view_count, projections, sky_transform, multiplier, p_transform.origin);
+	_render_sky(p_draw_list, p_time, p_fb, pipeline, material->uniform_set, texture_uniform_set, view_count, projections, sky_transform, multiplier, p_transform.origin, p_luminance_multiplier);
 }
 
 void RendererSceneSkyRD::invalidate_sky(Sky *p_sky) {

servers/rendering/renderer_rd/renderer_scene_sky_rd.h

@@ -100,7 +100,8 @@ private:
 		float position[3]; // 12 - 92
 		float multiplier; // 4 - 96
 		float time; // 4 - 100
-		float pad[3]; // 12 - 112 // Using pad to align on 16 bytes
+		float luminance_multiplier; // 4 - 104
+		float pad[2]; // 8 - 112 // Using pad to align on 16 bytes
 		// 128 is the max size of a push constant. We can replace "pad" but we can't add any more.
 	};
 
@@ -138,7 +139,7 @@ private:
 		virtual ~SkyShaderData();
 	};
 
-	void _render_sky(RD::DrawListID p_list, float p_time, RID p_fb, PipelineCacheRD *p_pipeline, RID p_uniform_set, RID p_texture_set, uint32_t p_view_count, const CameraMatrix *p_projections, const Basis &p_orientation, float p_multiplier, const Vector3 &p_position);
+	void _render_sky(RD::DrawListID p_list, float p_time, RID p_fb, PipelineCacheRD *p_pipeline, RID p_uniform_set, RID p_texture_set, uint32_t p_view_count, const CameraMatrix *p_projections, const Basis &p_orientation, float p_multiplier, const Vector3 &p_position, float p_luminance_multiplier);
 
 public:
 	struct SkySceneState {
@@ -293,10 +294,10 @@ public:
 	~RendererSceneSkyRD();
 
 	void setup(RendererSceneEnvironmentRD *p_env, RID p_render_buffers, const CameraMatrix &p_projection, const Transform3D &p_transform, const Size2i p_screen_size, RendererSceneRenderRD *p_scene_render);
-	void update(RendererSceneEnvironmentRD *p_env, const CameraMatrix &p_projection, const Transform3D &p_transform, double p_time);
-	void draw(RendererSceneEnvironmentRD *p_env, bool p_can_continue_color, bool p_can_continue_depth, RID p_fb, uint32_t p_view_count, const CameraMatrix *p_projections, const Transform3D &p_transform, double p_time);
-	void update_res_buffers(RendererSceneEnvironmentRD *p_env, uint32_t p_view_count, const CameraMatrix *p_projections, const Transform3D &p_transform, double p_time);
-	void draw(RD::DrawListID p_draw_list, RendererSceneEnvironmentRD *p_env, RID p_fb, uint32_t p_view_count, const CameraMatrix *p_projections, const Transform3D &p_transform, double p_time);
+	void update(RendererSceneEnvironmentRD *p_env, const CameraMatrix &p_projection, const Transform3D &p_transform, double p_time, float p_luminance_multiplier = 1.0);
+	void draw(RendererSceneEnvironmentRD *p_env, bool p_can_continue_color, bool p_can_continue_depth, RID p_fb, uint32_t p_view_count, const CameraMatrix *p_projections, const Transform3D &p_transform, double p_time); // only called by clustered renderer
+	void update_res_buffers(RendererSceneEnvironmentRD *p_env, uint32_t p_view_count, const CameraMatrix *p_projections, const Transform3D &p_transform, double p_time, float p_luminance_multiplier = 1.0);
+	void draw(RD::DrawListID p_draw_list, RendererSceneEnvironmentRD *p_env, RID p_fb, uint32_t p_view_count, const CameraMatrix *p_projections, const Transform3D &p_transform, double p_time, float p_luminance_multiplier = 1.0);
 
 	void invalidate_sky(Sky *p_sky);
 	void update_dirty_skys();

servers/rendering/renderer_rd/shader_compiler_rd.cpp

@@ -1165,6 +1165,7 @@ String ShaderCompilerRD::_dump_node_code(const SL::Node *p_node, int p_level, Ge
 					SL::VariableNode *vnode = (SL::VariableNode *)onode->arguments[0];
 
 					bool is_texture_func = false;
+					bool is_screen_texture = false;
 					if (onode->op == SL::OP_STRUCT) {
 						code += _mkid(vnode->name);
 					} else if (onode->op == SL::OP_CONSTRUCT) {
@@ -1197,6 +1198,7 @@ String ShaderCompilerRD::_dump_node_code(const SL::Node *p_node, int p_level, Ge
 							const SL::VariableNode *varnode = static_cast<const SL::VariableNode *>(onode->arguments[i]);
 
 							StringName texture_uniform = varnode->name;
+							is_screen_texture = (texture_uniform == "SCREEN_TEXTURE");
 
 							String sampler_name;
 
@@ -1236,6 +1238,9 @@ String ShaderCompilerRD::_dump_node_code(const SL::Node *p_node, int p_level, Ge
 						}
 					}
 					code += ")";
+					if (is_screen_texture && actions.apply_luminance_multiplier) {
+						code = "(" + code + " * vec4(vec3(sc_luminance_multiplier), 1.0))";
+					}
 				} break;
 				case SL::OP_INDEX: {
 					code += _dump_node_code(onode->arguments[0], p_level, r_gen_code, p_actions, p_default_actions, p_assigning);

servers/rendering/renderer_rd/shader_compiler_rd.h

@@ -95,6 +95,7 @@ public:
 		String global_buffer_array_variable;
 		String instance_uniform_index_variable;
 		uint32_t base_varying_index = 0;
+		bool apply_luminance_multiplier = false;
 	};
 
 private:

servers/rendering/renderer_rd/shaders/blur_raster.glsl

@@ -38,6 +38,8 @@ layout(set = 1, binding = 0) uniform sampler2D source_auto_exposure;
 layout(location = 0) out vec4 frag_color;
 
 void main() {
+	// We do not apply our color scale for our mobile renderer here, we'll leave our colors at half brightness and apply scale in the tonemap raster.
+
 #ifdef MODE_MIPMAP
 
 	vec2 pix_size = blur.pixel_size;

servers/rendering/renderer_rd/shaders/luminance_reduce_raster_inc.glsl

@@ -6,6 +6,6 @@ layout(push_constant, binding = 1, std430) uniform PushConstant {
 	float exposure_adjust;
 	float min_luminance;
 	float max_luminance;
-	float pad;
+	uint pad1;
 }
 settings;

servers/rendering/renderer_rd/shaders/scene_forward_clustered.glsl

@@ -374,6 +374,9 @@ layout(constant_id = 9) const uint sc_directional_penumbra_shadow_samples = 4;
 layout(constant_id = 10) const bool sc_decal_use_mipmaps = true;
 layout(constant_id = 11) const bool sc_projector_use_mipmaps = true;
 
+// not used in clustered renderer but we share some code with the mobile renderer that requires this.
+const float sc_luminance_multiplier = 1.0;
+
 #include "scene_forward_clustered_inc.glsl"
 
 /* Varyings */

servers/rendering/renderer_rd/shaders/scene_forward_lights_inc.glsl

@@ -969,7 +969,7 @@ void reflection_process(uint ref_index, vec3 vertex, vec3 normal, float roughnes
 
 		vec4 reflection;
 
-		reflection.rgb = textureLod(samplerCubeArray(reflection_atlas, material_samplers[SAMPLER_LINEAR_WITH_MIPMAPS_CLAMP]), vec4(local_ref_vec, reflections.data[ref_index].index), roughness * MAX_ROUGHNESS_LOD).rgb;
+		reflection.rgb = textureLod(samplerCubeArray(reflection_atlas, material_samplers[SAMPLER_LINEAR_WITH_MIPMAPS_CLAMP]), vec4(local_ref_vec, reflections.data[ref_index].index), roughness * MAX_ROUGHNESS_LOD).rgb * sc_luminance_multiplier;
 
 		if (reflections.data[ref_index].exterior) {
 			reflection.rgb = mix(specular_light, reflection.rgb, blend);

servers/rendering/renderer_rd/shaders/scene_forward_mobile.glsl

@@ -401,6 +401,8 @@ layout(constant_id = 14) const bool sc_disable_fog = false;
 
 #endif //!MODE_RENDER_DEPTH
 
+layout(constant_id = 15) const float sc_luminance_multiplier = 2.0;
+
 /* Include our forward mobile UBOs definitions etc. */
 #include "scene_forward_mobile_inc.glsl"
 
@@ -1551,12 +1553,15 @@ void main() {
 	frag_color = vec4(albedo, alpha);
 #else // MODE_UNSHADED
 	frag_color = vec4(emission + ambient_light + diffuse_light + specular_light, alpha);
-	//frag_color = vec4(1.0);
 #endif // MODE_UNSHADED
 
 	// Draw "fixed" fog before volumetric fog to ensure volumetric fog can appear in front of the sky.
 	frag_color.rgb = mix(frag_color.rgb, fog.rgb, fog.a);
 
+	// On mobile we use a UNORM buffer with 10bpp which results in a range from 0.0 - 1.0 resulting in HDR breaking
+	// We divide by sc_luminance_multiplier to support a range from 0.0 - 2.0 both increasing precision on bright and darker images
+	frag_color.rgb = frag_color.rgb / sc_luminance_multiplier;
+
 #endif //MODE_MULTIPLE_RENDER_TARGETS
 
 #endif //MODE_RENDER_DEPTH

servers/rendering/renderer_rd/shaders/sky.glsl

@@ -17,6 +17,8 @@ layout(push_constant, binding = 1, std430) uniform Params {
 	vec4 projections[MAX_VIEWS];
 	vec4 position_multiplier;
 	float time;
+	float luminance_multiplier;
+	float pad[2];
 }
 params;
 
@@ -55,6 +57,8 @@ layout(push_constant, binding = 1, std430) uniform Params {
 	vec4 projections[MAX_VIEWS];
 	vec4 position_multiplier;
 	float time;
+	float luminance_multiplier;
+	float pad[2];
 }
 params;
 
@@ -199,17 +203,17 @@ void main() {
 	vec3 inverted_cube_normal = cube_normal;
 	inverted_cube_normal.z *= -1.0;
 #ifdef USES_HALF_RES_COLOR
-	half_res_color = texture(samplerCube(half_res, material_samplers[SAMPLER_LINEAR_WITH_MIPMAPS_CLAMP]), inverted_cube_normal);
+	half_res_color = texture(samplerCube(half_res, material_samplers[SAMPLER_LINEAR_WITH_MIPMAPS_CLAMP]), inverted_cube_normal) * params.luminance_multiplier;
 #endif
 #ifdef USES_QUARTER_RES_COLOR
-	quarter_res_color = texture(samplerCube(quarter_res, material_samplers[SAMPLER_LINEAR_WITH_MIPMAPS_CLAMP]), inverted_cube_normal);
+	quarter_res_color = texture(samplerCube(quarter_res, material_samplers[SAMPLER_LINEAR_WITH_MIPMAPS_CLAMP]), inverted_cube_normal) * params.luminance_multiplier;
 #endif
 #else
 #ifdef USES_HALF_RES_COLOR
-	half_res_color = textureLod(sampler2D(half_res, material_samplers[SAMPLER_LINEAR_CLAMP]), uv, 0.0);
+	half_res_color = textureLod(sampler2D(half_res, material_samplers[SAMPLER_LINEAR_CLAMP]), uv, 0.0) * params.luminance_multiplier;
 #endif
 #ifdef USES_QUARTER_RES_COLOR
-	quarter_res_color = textureLod(sampler2D(quarter_res, material_samplers[SAMPLER_LINEAR_CLAMP]), uv, 0.0);
+	quarter_res_color = textureLod(sampler2D(quarter_res, material_samplers[SAMPLER_LINEAR_CLAMP]), uv, 0.0) * params.luminance_multiplier;
 #endif
 #endif
 
@@ -246,4 +250,7 @@ void main() {
 	if (!AT_CUBEMAP_PASS && !AT_HALF_RES_PASS && !AT_QUARTER_RES_PASS) {
 		frag_color.a = 0.0;
 	}
+
+	// For mobile renderer we're dividing by 2.0 as we're using a UNORM buffer
+	frag_color.rgb = frag_color.rgb / params.luminance_multiplier;
 }

servers/rendering/renderer_rd/shaders/tonemap.glsl

@@ -71,7 +71,7 @@ layout(push_constant, binding = 1, std430) uniform Params {
 	float exposure;
 	float white;
 	float auto_exposure_grey;
-	uint pad2;
+	float luminance_multiplier;
 
 	vec2 pixel_size;
 	bool use_fxaa;
@@ -298,15 +298,15 @@ vec3 do_fxaa(vec3 color, float exposure, vec2 uv_interp) {
 	const float FXAA_SPAN_MAX = 8.0;
 
 #ifdef MULTIVIEW
-	vec3 rgbNW = textureLod(source_color, vec3(uv_interp + vec2(-1.0, -1.0) * params.pixel_size, ViewIndex), 0.0).xyz * exposure;
-	vec3 rgbNE = textureLod(source_color, vec3(uv_interp + vec2(1.0, -1.0) * params.pixel_size, ViewIndex), 0.0).xyz * exposure;
-	vec3 rgbSW = textureLod(source_color, vec3(uv_interp + vec2(-1.0, 1.0) * params.pixel_size, ViewIndex), 0.0).xyz * exposure;
-	vec3 rgbSE = textureLod(source_color, vec3(uv_interp + vec2(1.0, 1.0) * params.pixel_size, ViewIndex), 0.0).xyz * exposure;
+	vec3 rgbNW = textureLod(source_color, vec3(uv_interp + vec2(-1.0, -1.0) * params.pixel_size, ViewIndex), 0.0).xyz * exposure * params.luminance_multiplier;
+	vec3 rgbNE = textureLod(source_color, vec3(uv_interp + vec2(1.0, -1.0) * params.pixel_size, ViewIndex), 0.0).xyz * exposure * params.luminance_multiplier;
+	vec3 rgbSW = textureLod(source_color, vec3(uv_interp + vec2(-1.0, 1.0) * params.pixel_size, ViewIndex), 0.0).xyz * exposure * params.luminance_multiplier;
+	vec3 rgbSE = textureLod(source_color, vec3(uv_interp + vec2(1.0, 1.0) * params.pixel_size, ViewIndex), 0.0).xyz * exposure * params.luminance_multiplier;
 #else
-	vec3 rgbNW = textureLod(source_color, uv_interp + vec2(-1.0, -1.0) * params.pixel_size, 0.0).xyz * exposure;
-	vec3 rgbNE = textureLod(source_color, uv_interp + vec2(1.0, -1.0) * params.pixel_size, 0.0).xyz * exposure;
-	vec3 rgbSW = textureLod(source_color, uv_interp + vec2(-1.0, 1.0) * params.pixel_size, 0.0).xyz * exposure;
-	vec3 rgbSE = textureLod(source_color, uv_interp + vec2(1.0, 1.0) * params.pixel_size, 0.0).xyz * exposure;
+	vec3 rgbNW = textureLod(source_color, uv_interp + vec2(-1.0, -1.0) * params.pixel_size, 0.0).xyz * exposure * params.luminance_multiplier;
+	vec3 rgbNE = textureLod(source_color, uv_interp + vec2(1.0, -1.0) * params.pixel_size, 0.0).xyz * exposure * params.luminance_multiplier;
+	vec3 rgbSW = textureLod(source_color, uv_interp + vec2(-1.0, 1.0) * params.pixel_size, 0.0).xyz * exposure * params.luminance_multiplier;
+	vec3 rgbSE = textureLod(source_color, uv_interp + vec2(1.0, 1.0) * params.pixel_size, 0.0).xyz * exposure * params.luminance_multiplier;
 #endif
 	vec3 rgbM = color;
 	vec3 luma = vec3(0.299, 0.587, 0.114);
@@ -333,11 +333,11 @@ vec3 do_fxaa(vec3 color, float exposure, vec2 uv_interp) {
 		  params.pixel_size;
 
 #ifdef MULTIVIEW
-	vec3 rgbA = 0.5 * exposure * (textureLod(source_color, vec3(uv_interp + dir * (1.0 / 3.0 - 0.5), ViewIndex), 0.0).xyz + textureLod(source_color, vec3(uv_interp + dir * (2.0 / 3.0 - 0.5), ViewIndex), 0.0).xyz);
-	vec3 rgbB = rgbA * 0.5 + 0.25 * exposure * (textureLod(source_color, vec3(uv_interp + dir * -0.5, ViewIndex), 0.0).xyz + textureLod(source_color, vec3(uv_interp + dir * 0.5, ViewIndex), 0.0).xyz);
+	vec3 rgbA = 0.5 * exposure * (textureLod(source_color, vec3(uv_interp + dir * (1.0 / 3.0 - 0.5), ViewIndex), 0.0).xyz + textureLod(source_color, vec3(uv_interp + dir * (2.0 / 3.0 - 0.5), ViewIndex), 0.0).xyz) * params.luminance_multiplier;
+	vec3 rgbB = rgbA * 0.5 + 0.25 * exposure * (textureLod(source_color, vec3(uv_interp + dir * -0.5, ViewIndex), 0.0).xyz + textureLod(source_color, vec3(uv_interp + dir * 0.5, ViewIndex), 0.0).xyz) * params.luminance_multiplier;
 #else
-	vec3 rgbA = 0.5 * exposure * (textureLod(source_color, uv_interp + dir * (1.0 / 3.0 - 0.5), 0.0).xyz + textureLod(source_color, uv_interp + dir * (2.0 / 3.0 - 0.5), 0.0).xyz);
-	vec3 rgbB = rgbA * 0.5 + 0.25 * exposure * (textureLod(source_color, uv_interp + dir * -0.5, 0.0).xyz + textureLod(source_color, uv_interp + dir * 0.5, 0.0).xyz);
+	vec3 rgbA = 0.5 * exposure * (textureLod(source_color, uv_interp + dir * (1.0 / 3.0 - 0.5), 0.0).xyz + textureLod(source_color, uv_interp + dir * (2.0 / 3.0 - 0.5), 0.0).xyz) * params.luminance_multiplier;
+	vec3 rgbB = rgbA * 0.5 + 0.25 * exposure * (textureLod(source_color, uv_interp + dir * -0.5, 0.0).xyz + textureLod(source_color, uv_interp + dir * 0.5, 0.0).xyz) * params.luminance_multiplier;
 #endif
 
 	float lumaB = dot(rgbB, luma);
@@ -364,11 +364,11 @@ vec3 screen_space_dither(vec2 frag_coord) {
 void main() {
 #ifdef SUBPASS
 	// SUBPASS and MULTIVIEW can be combined but in that case we're already reading from the correct layer
-	vec3 color = subpassLoad(input_color).rgb;
+	vec3 color = subpassLoad(input_color).rgb * params.luminance_multiplier;
 #elif defined(MULTIVIEW)
-	vec3 color = textureLod(source_color, vec3(uv_interp, ViewIndex), 0.0f).rgb;
+	vec3 color = textureLod(source_color, vec3(uv_interp, ViewIndex), 0.0f).rgb * params.luminance_multiplier;
 #else
-	vec3 color = textureLod(source_color, uv_interp, 0.0f).rgb;
+	vec3 color = textureLod(source_color, uv_interp, 0.0f).rgb * params.luminance_multiplier;
 #endif
 
 	// Exposure
@@ -377,7 +377,7 @@ void main() {
 
 #ifndef SUBPASS
 	if (params.use_auto_exposure) {
-		exposure *= 1.0 / (texelFetch(source_auto_exposure, ivec2(0, 0), 0).r / params.auto_exposure_grey);
+		exposure *= 1.0 / (texelFetch(source_auto_exposure, ivec2(0, 0), 0).r * params.luminance_multiplier / params.auto_exposure_grey);
 	}
 #endif
 
@@ -386,7 +386,7 @@ void main() {
 	// Early Tonemap & SRGB Conversion
 #ifndef SUBPASS
 	if (params.use_glow && params.glow_mode == GLOW_MODE_MIX) {
-		vec3 glow = gather_glow(source_glow, uv_interp);
+		vec3 glow = gather_glow(source_glow, uv_interp) * params.luminance_multiplier;
 		color.rgb = mix(color.rgb, glow, params.glow_intensity);
 	}
 
@@ -411,7 +411,7 @@ void main() {
 	// Glow
 
 	if (params.use_glow && params.glow_mode != GLOW_MODE_MIX) {
-		vec3 glow = gather_glow(source_glow, uv_interp) * params.glow_intensity;
+		vec3 glow = gather_glow(source_glow, uv_interp) * params.glow_intensity * params.luminance_multiplier;
 
 		// high dynamic range -> SRGB
 		glow = apply_tonemapping(glow, params.white);