Merge pull request #99958 from lander-vr/reflection-probe-blend-property

Add Blend Distance property to ReflectionProbe

doc/classes/ReflectionProbe.xml

@@ -23,6 +23,9 @@
 		<member name="ambient_mode" type="int" setter="set_ambient_mode" getter="get_ambient_mode" enum="ReflectionProbe.AmbientMode" default="1">
 			The ambient color to use within the [ReflectionProbe]'s box defined by its [member size]. The ambient color will smoothly blend with other [ReflectionProbe]s and the rest of the scene (outside the [ReflectionProbe]'s box defined by its [member size]).
 		</member>
+		<member name="blend_distance" type="float" setter="set_blend_distance" getter="get_blend_distance" default="1.0">
+			Defines the distance in meters over which a probe blends into the scene.
+		</member>
 		<member name="box_projection" type="bool" setter="set_enable_box_projection" getter="is_box_projection_enabled" default="false">
 			If [code]true[/code], enables box projection. This makes reflections look more correct in rectangle-shaped rooms by offsetting the reflection center depending on the camera's location.
 			[b]Note:[/b] To better fit rectangle-shaped rooms that are not aligned to the grid, you can rotate the [ReflectionProbe] node.

doc/classes/RenderingServer.xml

@@ -3163,6 +3163,14 @@
 				If [code]true[/code], reflections will ignore sky contribution. Equivalent to [member ReflectionProbe.interior].
 			</description>
 		</method>
+		<method name="reflection_probe_set_blend_distance">
+			<return type="void" />
+			<param index="0" name="probe" type="RID" />
+			<param index="1" name="blend_distance" type="float" />
+			<description>
+				Sets the distance in meters over which a probe blends into the scene.
+			</description>
+		</method>
 		<method name="reflection_probe_set_cull_mask">
 			<return type="void" />
 			<param index="0" name="probe" type="RID" />

drivers/gles3/rasterizer_scene_gles3.cpp

@@ -3477,6 +3477,7 @@ void RasterizerSceneGLES3::_render_list_template(RenderListParameters *p_params,
 						material_storage->shaders.scene_shader.version_set_uniform(SceneShaderGLES3::REFPROBE1_AMBIENT_MODE, int(probe->ambient_mode), shader->version, instance_variant, spec_constants);
 						material_storage->shaders.scene_shader.version_set_uniform(SceneShaderGLES3::REFPROBE1_AMBIENT_COLOR, probe->ambient_color * probe->ambient_color_energy, shader->version, instance_variant, spec_constants);
 						material_storage->shaders.scene_shader.version_set_uniform(SceneShaderGLES3::REFPROBE1_LOCAL_MATRIX, inst->reflection_probes_local_transform_cache[0], shader->version, instance_variant, spec_constants);
+						material_storage->shaders.scene_shader.version_set_uniform(SceneShaderGLES3::REFPROBE1_BLEND_DISTANCE, probe->blend_distance, shader->version, instance_variant, spec_constants);
 
 						glActiveTexture(GL_TEXTURE0 + config->max_texture_image_units - 8);
 						glBindTexture(GL_TEXTURE_CUBE_MAP, light_storage->reflection_probe_instance_get_texture(inst->reflection_probe_rid_cache[0]));
@@ -3495,6 +3496,7 @@ void RasterizerSceneGLES3::_render_list_template(RenderListParameters *p_params,
 						material_storage->shaders.scene_shader.version_set_uniform(SceneShaderGLES3::REFPROBE2_AMBIENT_MODE, int(probe->ambient_mode), shader->version, instance_variant, spec_constants);
 						material_storage->shaders.scene_shader.version_set_uniform(SceneShaderGLES3::REFPROBE2_AMBIENT_COLOR, probe->ambient_color * probe->ambient_color_energy, shader->version, instance_variant, spec_constants);
 						material_storage->shaders.scene_shader.version_set_uniform(SceneShaderGLES3::REFPROBE2_LOCAL_MATRIX, inst->reflection_probes_local_transform_cache[1], shader->version, instance_variant, spec_constants);
+						material_storage->shaders.scene_shader.version_set_uniform(SceneShaderGLES3::REFPROBE2_BLEND_DISTANCE, probe->blend_distance, shader->version, instance_variant, spec_constants);
 
 						glActiveTexture(GL_TEXTURE0 + config->max_texture_image_units - 9);
 						glBindTexture(GL_TEXTURE_CUBE_MAP, light_storage->reflection_probe_instance_get_texture(inst->reflection_probe_rid_cache[1]));

drivers/gles3/shaders/scene.glsl

@@ -885,6 +885,7 @@ uniform vec3 refprobe1_box_offset;
 uniform highp mat4 refprobe1_local_matrix;
 uniform bool refprobe1_exterior;
 uniform float refprobe1_intensity;
+uniform float refprobe1_blend_distance;
 uniform int refprobe1_ambient_mode;
 uniform vec4 refprobe1_ambient_color;
 
@@ -898,6 +899,7 @@ uniform vec3 refprobe2_box_offset;
 uniform highp mat4 refprobe2_local_matrix;
 uniform bool refprobe2_exterior;
 uniform float refprobe2_intensity;
+uniform float refprobe2_blend_distance;
 uniform int refprobe2_ambient_mode;
 uniform vec4 refprobe2_ambient_color;
 
@@ -1606,7 +1608,7 @@ void reflection_process(samplerCube reflection_map,
 		vec3 normal, vec3 vertex,
 		mat4 local_matrix,
 		bool use_box_project, vec3 box_extents, vec3 box_offset,
-		bool exterior, float intensity, int ref_ambient_mode, vec4 ref_ambient_color,
+		bool exterior, float intensity, float blend_distance, int ref_ambient_mode, vec4 ref_ambient_color,
 		float roughness, vec3 ambient, vec3 skybox,
 		inout highp vec4 reflection_accum, inout highp vec4 ambient_accum) {
 	vec4 reflection;
@@ -1618,10 +1620,20 @@ void reflection_process(samplerCube reflection_map,
 	}
 
 	vec3 inner_pos = abs(local_pos / box_extents);
-	float blend = max(inner_pos.x, max(inner_pos.y, inner_pos.z));
-	blend = mix(length(inner_pos), blend, blend);
-	blend *= blend;
+	vec3 blend_axes = vec3(0.0, 0.0, 0.0);
+	float blend = 0.0;
+	if (blend_distance != 0) {
+		for (int i = 0; i < 3; i++) {
+			float axis_blend_distance = min(blend_distance, box_extents[i]);
+			blend_axes[i] = (inner_pos[i] * box_extents[i]) - box_extents[i] + axis_blend_distance;
+			blend_axes[i] = blend_axes[i] / axis_blend_distance;
+			blend_axes[i] = clamp(blend_axes[i], 0.0, 1.0);
+		}
+		blend = pow((1.0 - blend_axes.x) * (1.0 - blend_axes.y) * (1.0 - blend_axes.z), 2);
+		blend = 1 - blend;
+	}
 	blend = max(0.0, 1.0 - blend);
+	blend = clamp(blend, 0.0, 1.0);
 
 	//reflect and make local
 	vec3 ref_normal = normalize(reflect(vertex, normal));
@@ -1980,14 +1992,14 @@ void main() {
 
 		reflection_process(refprobe1_texture, normal, vertex_interp, refprobe1_local_matrix,
 				refprobe1_use_box_project, refprobe1_box_extents, refprobe1_box_offset,
-				refprobe1_exterior, refprobe1_intensity, refprobe1_ambient_mode, refprobe1_ambient_color,
+				refprobe1_exterior, refprobe1_intensity, refprobe1_blend_distance, refprobe1_ambient_mode, refprobe1_ambient_color,
 				roughness, ambient_light, specular_light, reflection_accum, ambient_accum);
 
 #ifdef SECOND_REFLECTION_PROBE
 
 		reflection_process(refprobe2_texture, normal, vertex_interp, refprobe2_local_matrix,
 				refprobe2_use_box_project, refprobe2_box_extents, refprobe2_box_offset,
-				refprobe2_exterior, refprobe2_intensity, refprobe2_ambient_mode, refprobe2_ambient_color,
+				refprobe2_exterior, refprobe2_intensity, refprobe2_blend_distance, refprobe2_ambient_mode, refprobe2_ambient_color,
 				roughness, ambient_light, specular_light, reflection_accum, ambient_accum);
 
 #endif // SECOND_REFLECTION_PROBE

drivers/gles3/storage/light_storage.cpp

@@ -471,6 +471,13 @@ void LightStorage::reflection_probe_set_intensity(RID p_probe, float p_intensity
 	reflection_probe->intensity = p_intensity;
 }
 
+void LightStorage::reflection_probe_set_blend_distance(RID p_probe, float p_blend_distance) {
+	ReflectionProbe *reflection_probe = reflection_probe_owner.get_or_null(p_probe);
+	ERR_FAIL_NULL(reflection_probe);
+
+	reflection_probe->blend_distance = p_blend_distance;
+}
+
 void LightStorage::reflection_probe_set_ambient_mode(RID p_probe, RS::ReflectionProbeAmbientMode p_mode) {
 	ReflectionProbe *reflection_probe = reflection_probe_owner.get_or_null(p_probe);
 	ERR_FAIL_NULL(reflection_probe);

drivers/gles3/storage/light_storage.h

@@ -118,6 +118,7 @@ struct ReflectionProbe {
 	RS::ReflectionProbeUpdateMode update_mode = RS::REFLECTION_PROBE_UPDATE_ONCE;
 	int resolution = 256;
 	float intensity = 1.0;
+	float blend_distance = 1.0;
 	RS::ReflectionProbeAmbientMode ambient_mode = RS::REFLECTION_PROBE_AMBIENT_ENVIRONMENT;
 	Color ambient_color;
 	float ambient_color_energy = 1.0;
@@ -642,6 +643,7 @@ public:
 
 	virtual void reflection_probe_set_update_mode(RID p_probe, RS::ReflectionProbeUpdateMode p_mode) override;
 	virtual void reflection_probe_set_intensity(RID p_probe, float p_intensity) override;
+	virtual void reflection_probe_set_blend_distance(RID p_probe, float p_blend_distance) override;
 	virtual void reflection_probe_set_ambient_mode(RID p_probe, RS::ReflectionProbeAmbientMode p_mode) override;
 	virtual void reflection_probe_set_ambient_color(RID p_probe, const Color &p_color) override;
 	virtual void reflection_probe_set_ambient_energy(RID p_probe, float p_energy) override;

editor/plugins/gizmos/reflection_probe_gizmo_plugin.cpp

@@ -165,6 +165,32 @@ void ReflectionProbeGizmoPlugin::redraw(EditorNode3DGizmo *p_gizmo) {
 		aabb.position = -size / 2;
 		aabb.size = size;
 
+		AABB blend_aabb;
+		for (int i = 0; i < 3; i++) {
+			blend_aabb.position[i] = aabb.position[i] + probe->get_blend_distance();
+			blend_aabb.size[i] = aabb.size[i] - probe->get_blend_distance() * 2.0;
+			if (blend_aabb.size[i] < blend_aabb.position[i]) {
+				blend_aabb.position[i] = aabb.position[i] + aabb.size[i] / 2.0;
+				blend_aabb.size[i] = 0.0;
+			}
+		}
+
+		if (probe->get_blend_distance() != 0.0) {
+			for (int i = 0; i < 12; i++) {
+				Vector3 a;
+				Vector3 b;
+				blend_aabb.get_edge(i, a, b);
+				lines.push_back(a);
+				lines.push_back(b);
+			}
+
+			for (int i = 0; i < 8; i++) {
+				Vector3 ep = aabb.get_endpoint(i);
+				internal_lines.push_back(blend_aabb.get_endpoint(i));
+				internal_lines.push_back(ep);
+			}
+		}
+
 		Vector<Vector3> handles = helper->box_get_handles(probe->get_size());
 
 		if (probe->get_origin_offset() != Vector3(0.0, 0.0, 0.0)) {

scene/3d/reflection_probe.cpp

@@ -39,6 +39,16 @@ float ReflectionProbe::get_intensity() const {
 	return intensity;
 }
 
+void ReflectionProbe::set_blend_distance(float p_blend_distance) {
+	blend_distance = p_blend_distance;
+	RS::get_singleton()->reflection_probe_set_blend_distance(probe, p_blend_distance);
+	update_gizmos();
+}
+
+float ReflectionProbe::get_blend_distance() const {
+	return blend_distance;
+}
+
 void ReflectionProbe::set_ambient_mode(AmbientMode p_mode) {
 	ambient_mode = p_mode;
 	RS::get_singleton()->reflection_probe_set_ambient_mode(probe, RS::ReflectionProbeAmbientMode(p_mode));
@@ -202,6 +212,9 @@ void ReflectionProbe::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_intensity", "intensity"), &ReflectionProbe::set_intensity);
 	ClassDB::bind_method(D_METHOD("get_intensity"), &ReflectionProbe::get_intensity);
 
+	ClassDB::bind_method(D_METHOD("set_blend_distance", "blend_distance"), &ReflectionProbe::set_blend_distance);
+	ClassDB::bind_method(D_METHOD("get_blend_distance"), &ReflectionProbe::get_blend_distance);
+
 	ClassDB::bind_method(D_METHOD("set_ambient_mode", "ambient"), &ReflectionProbe::set_ambient_mode);
 	ClassDB::bind_method(D_METHOD("get_ambient_mode"), &ReflectionProbe::get_ambient_mode);
 
@@ -243,6 +256,7 @@ void ReflectionProbe::_bind_methods() {
 
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "update_mode", PROPERTY_HINT_ENUM, "Once (Fast),Always (Slow)"), "set_update_mode", "get_update_mode");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "intensity", PROPERTY_HINT_RANGE, "0,1,0.01"), "set_intensity", "get_intensity");
+	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "blend_distance", PROPERTY_HINT_RANGE, "0,8,0.01,or_greater,suffix:m"), "set_blend_distance", "get_blend_distance");
 	ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "max_distance", PROPERTY_HINT_RANGE, "0,16384,0.1,or_greater,exp,suffix:m"), "set_max_distance", "get_max_distance");
 	ADD_PROPERTY(PropertyInfo(Variant::VECTOR3, "size", PROPERTY_HINT_NONE, "suffix:m"), "set_size", "get_size");
 	ADD_PROPERTY(PropertyInfo(Variant::VECTOR3, "origin_offset", PROPERTY_HINT_NONE, "suffix:m"), "set_origin_offset", "get_origin_offset");

scene/3d/reflection_probe.h

@@ -51,6 +51,7 @@ public:
 private:
 	RID probe;
 	float intensity = 1.0;
+	float blend_distance = 1.0;
 	float max_distance = 0.0;
 	Vector3 size = Vector3(20, 20, 20);
 	Vector3 origin_offset = Vector3(0, 0, 0);
@@ -78,6 +79,9 @@ public:
 	void set_intensity(float p_intensity);
 	float get_intensity() const;
 
+	void set_blend_distance(float p_blend_distance);
+	float get_blend_distance() const;
+
 	void set_ambient_mode(AmbientMode p_mode);
 	AmbientMode get_ambient_mode() const;
 

servers/rendering/dummy/storage/light_storage.h

@@ -124,6 +124,7 @@ public:
 
 	virtual void reflection_probe_set_update_mode(RID p_probe, RS::ReflectionProbeUpdateMode p_mode) override {}
 	virtual void reflection_probe_set_intensity(RID p_probe, float p_intensity) override {}
+	virtual void reflection_probe_set_blend_distance(RID p_probe, float p_blend_distance) override {}
 	virtual void reflection_probe_set_ambient_mode(RID p_probe, RS::ReflectionProbeAmbientMode p_mode) override {}
 	virtual void reflection_probe_set_ambient_color(RID p_probe, const Color &p_color) override {}
 	virtual void reflection_probe_set_ambient_energy(RID p_probe, float p_energy) override {}

servers/rendering/renderer_rd/shaders/light_data_inc.glsl

@@ -41,10 +41,14 @@ struct ReflectionData {
 	uint mask;
 	mediump vec3 ambient; // ambient color
 	mediump float intensity;
+	mediump float blend_distance;
 	bool exterior;
 	bool box_project;
 	uint ambient_mode;
 	float exposure_normalization;
+	float pad0;
+	float pad1;
+	float pad2;
 	//0-8 is intensity,8-9 is ambient, mode
 	highp mat4 local_matrix; // up to here for spot and omni, rest is for directional
 	// notes: for ambientblend, use distance to edge to blend between already existing global environment

servers/rendering/renderer_rd/shaders/scene_forward_lights_inc.glsl

@@ -876,11 +876,20 @@ void reflection_process(uint ref_index, vec3 vertex, vec3 ref_vec, vec3 normal,
 	}
 
 	vec3 inner_pos = abs(local_pos / box_extents);
-	float blend = max(inner_pos.x, max(inner_pos.y, inner_pos.z));
-	//make blend more rounded
-	blend = mix(length(inner_pos), blend, blend);
-	blend *= blend;
+	vec3 blend_axes = vec3(0.0, 0.0, 0.0);
+	float blend = 0.0;
+	if (reflections.data[ref_index].blend_distance != 0) {
+		for (int i = 0; i < 3; i++) {
+			float axis_blend_distance = min(reflections.data[ref_index].blend_distance, box_extents[i]);
+			blend_axes[i] = (inner_pos[i] * box_extents[i]) - box_extents[i] + axis_blend_distance;
+			blend_axes[i] = blend_axes[i] / axis_blend_distance;
+			blend_axes[i] = clamp(blend_axes[i], 0.0, 1.0);
+		}
+		blend = pow((1.0 - blend_axes.x) * (1.0 - blend_axes.y) * (1.0 - blend_axes.z), 2);
+		blend = 1 - blend;
+	}
 	blend = max(0.0, 1.0 - blend);
+	blend = clamp(blend, 0.0, 1.0);
 
 	if (reflections.data[ref_index].intensity > 0.0) { // compute reflection
 

servers/rendering/renderer_rd/storage_rd/light_storage.cpp

@@ -1073,6 +1073,13 @@ void LightStorage::reflection_probe_set_intensity(RID p_probe, float p_intensity
 	reflection_probe->intensity = p_intensity;
 }
 
+void LightStorage::reflection_probe_set_blend_distance(RID p_probe, float p_blend_distance) {
+	ReflectionProbe *reflection_probe = reflection_probe_owner.get_or_null(p_probe);
+	ERR_FAIL_NULL(reflection_probe);
+
+	reflection_probe->blend_distance = p_blend_distance;
+}
+
 void LightStorage::reflection_probe_set_ambient_mode(RID p_probe, RS::ReflectionProbeAmbientMode p_mode) {
 	ReflectionProbe *reflection_probe = reflection_probe_owner.get_or_null(p_probe);
 	ERR_FAIL_NULL(reflection_probe);
@@ -1273,6 +1280,13 @@ float LightStorage::reflection_probe_get_intensity(RID p_probe) const {
 	return reflection_probe->intensity;
 }
 
+float LightStorage::reflection_probe_get_blend_distance(RID p_probe) const {
+	const ReflectionProbe *reflection_probe = reflection_probe_owner.get_or_null(p_probe);
+	ERR_FAIL_NULL_V(reflection_probe, 0);
+
+	return reflection_probe->blend_distance;
+}
+
 bool LightStorage::reflection_probe_is_interior(RID p_probe) const {
 	const ReflectionProbe *reflection_probe = reflection_probe_owner.get_or_null(p_probe);
 	ERR_FAIL_NULL_V(reflection_probe, false);
@@ -1762,6 +1776,7 @@ void LightStorage::update_reflection_probe_buffer(RenderDataRD *p_render_data, c
 		reflection_ubo.mask = probe->reflection_mask;
 
 		reflection_ubo.intensity = probe->intensity;
+		reflection_ubo.blend_distance = probe->blend_distance;
 		reflection_ubo.ambient_mode = probe->ambient_mode;
 
 		reflection_ubo.exterior = !probe->interior;

servers/rendering/renderer_rd/storage_rd/light_storage.h

@@ -223,6 +223,7 @@ private:
 		RS::ReflectionProbeUpdateMode update_mode = RS::REFLECTION_PROBE_UPDATE_ONCE;
 		int resolution = 256;
 		float intensity = 1.0;
+		float blend_distance = 1.0;
 		RS::ReflectionProbeAmbientMode ambient_mode = RS::REFLECTION_PROBE_AMBIENT_ENVIRONMENT;
 		Color ambient_color;
 		float ambient_color_energy = 1.0;
@@ -303,10 +304,14 @@ private:
 		uint32_t mask;
 		float ambient[3]; // ambient color,
 		float intensity;
+		float blend_distance;
 		uint32_t exterior;
 		uint32_t box_project;
 		uint32_t ambient_mode;
 		float exposure_normalization;
+		uint32_t pad0;
+		uint32_t pad1;
+		uint32_t pad2;
 		float local_matrix[16]; // up to here for spot and omni, rest is for directional
 	};
 
@@ -833,6 +838,7 @@ public:
 
 	virtual void reflection_probe_set_update_mode(RID p_probe, RS::ReflectionProbeUpdateMode p_mode) override;
 	virtual void reflection_probe_set_intensity(RID p_probe, float p_intensity) override;
+	virtual void reflection_probe_set_blend_distance(RID p_probe, float p_blend_distance) override;
 	virtual void reflection_probe_set_ambient_mode(RID p_probe, RS::ReflectionProbeAmbientMode p_mode) override;
 	virtual void reflection_probe_set_ambient_color(RID p_probe, const Color &p_color) override;
 	virtual void reflection_probe_set_ambient_energy(RID p_probe, float p_energy) override;
@@ -863,6 +869,7 @@ public:
 	virtual bool reflection_probe_renders_shadows(RID p_probe) const override;
 
 	float reflection_probe_get_intensity(RID p_probe) const;
+	float reflection_probe_get_blend_distance(RID p_probe) const;
 	bool reflection_probe_is_interior(RID p_probe) const;
 	bool reflection_probe_is_box_projection(RID p_probe) const;
 	RS::ReflectionProbeAmbientMode reflection_probe_get_ambient_mode(RID p_probe) const;

servers/rendering/rendering_server_default.h

@@ -460,6 +460,7 @@ public:
 
 	FUNC2(reflection_probe_set_update_mode, RID, ReflectionProbeUpdateMode)
 	FUNC2(reflection_probe_set_intensity, RID, float)
+	FUNC2(reflection_probe_set_blend_distance, RID, float)
 	FUNC2(reflection_probe_set_ambient_color, RID, const Color &)
 	FUNC2(reflection_probe_set_ambient_energy, RID, float)
 	FUNC2(reflection_probe_set_ambient_mode, RID, ReflectionProbeAmbientMode)

servers/rendering/storage/light_storage.h

@@ -111,6 +111,7 @@ public:
 	virtual void reflection_probe_set_update_mode(RID p_probe, RS::ReflectionProbeUpdateMode p_mode) = 0;
 	virtual void reflection_probe_set_resolution(RID p_probe, int p_resolution) = 0;
 	virtual void reflection_probe_set_intensity(RID p_probe, float p_intensity) = 0;
+	virtual void reflection_probe_set_blend_distance(RID p_probe, float p_blend_distance) = 0;
 	virtual void reflection_probe_set_ambient_mode(RID p_probe, RS::ReflectionProbeAmbientMode p_mode) = 0;
 	virtual void reflection_probe_set_ambient_color(RID p_probe, const Color &p_color) = 0;
 	virtual void reflection_probe_set_ambient_energy(RID p_probe, float p_energy) = 0;

servers/rendering_server.cpp

@@ -2571,6 +2571,7 @@ void RenderingServer::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("reflection_probe_create"), &RenderingServer::reflection_probe_create);
 	ClassDB::bind_method(D_METHOD("reflection_probe_set_update_mode", "probe", "mode"), &RenderingServer::reflection_probe_set_update_mode);
 	ClassDB::bind_method(D_METHOD("reflection_probe_set_intensity", "probe", "intensity"), &RenderingServer::reflection_probe_set_intensity);
+	ClassDB::bind_method(D_METHOD("reflection_probe_set_blend_distance", "probe", "blend_distance"), &RenderingServer::reflection_probe_set_blend_distance);
 	ClassDB::bind_method(D_METHOD("reflection_probe_set_ambient_mode", "probe", "mode"), &RenderingServer::reflection_probe_set_ambient_mode);
 	ClassDB::bind_method(D_METHOD("reflection_probe_set_ambient_color", "probe", "color"), &RenderingServer::reflection_probe_set_ambient_color);
 	ClassDB::bind_method(D_METHOD("reflection_probe_set_ambient_energy", "probe", "energy"), &RenderingServer::reflection_probe_set_ambient_energy);

servers/rendering_server.h

@@ -622,6 +622,7 @@ public:
 
 	virtual void reflection_probe_set_update_mode(RID p_probe, ReflectionProbeUpdateMode p_mode) = 0;
 	virtual void reflection_probe_set_intensity(RID p_probe, float p_intensity) = 0;
+	virtual void reflection_probe_set_blend_distance(RID p_probe, float p_blend_distance) = 0;
 
 	enum ReflectionProbeAmbientMode {
 		REFLECTION_PROBE_AMBIENT_DISABLED,