Add `CLIP_SPACE_FAR` built-in to spatial shader

9 files changed, 16 insertions, 0 deletions

diff --git a/drivers/gles3/shaders/scene.glsl b/drivers/gles3/shaders/scene.glsl
index ce2db7fa85..6143ce2167 100644
--- a/drivers/gles3/shaders/scene.glsl
+++ b/drivers/gles3/shaders/scene.glsl
@@ -44,6 +44,7 @@ LIGHTMAP_BICUBIC_FILTER = false
 #define M_PI 3.14159265359
 
 #define SHADER_IS_SRGB true
+#define SHADER_SPACE_FAR -1.0
 
 #include "stdlib_inc.glsl"
 
@@ -583,6 +584,7 @@ void main() {
 /* clang-format on */
 
 #define SHADER_IS_SRGB true
+#define SHADER_SPACE_FAR -1.0
 
 #define FLAGS_NON_UNIFORM_SCALE (1 << 4)
 
diff --git a/drivers/gles3/storage/material_storage.cpp b/drivers/gles3/storage/material_storage.cpp
index 25af7ff691..a37eba3b15 100644
--- a/drivers/gles3/storage/material_storage.cpp
+++ b/drivers/gles3/storage/material_storage.cpp
@@ -1273,6 +1273,7 @@ MaterialStorage::MaterialStorage() {
 		actions.renames["CUSTOM2"] = "custom2_attrib";
 		actions.renames["CUSTOM3"] = "custom3_attrib";
 		actions.renames["OUTPUT_IS_SRGB"] = "SHADER_IS_SRGB";
+		actions.renames["CLIP_SPACE_FAR"] = "SHADER_SPACE_FAR";
 		actions.renames["LIGHT_VERTEX"] = "light_vertex";
 
 		actions.renames["NODE_POSITION_WORLD"] = "model_matrix[3].xyz";
diff --git a/editor/plugins/visual_shader_editor_plugin.cpp b/editor/plugins/visual_shader_editor_plugin.cpp
index c183aceb13..7575057beb 100644
--- a/editor/plugins/visual_shader_editor_plugin.cpp
+++ b/editor/plugins/visual_shader_editor_plugin.cpp
@@ -6807,6 +6807,7 @@ VisualShaderEditor::VisualShaderEditor() {
 
 	// NODE3D-FOR-ALL
 
+	add_options.push_back(AddOption("ClipSpaceFar", "Input/All", "VisualShaderNodeInput", vformat(input_param_shader_modes, "clip_space_far", "CLIP_SPACE_FAR"), { "clip_space_far" }, VisualShaderNode::PORT_TYPE_SCALAR, -1, Shader::MODE_SPATIAL));
 	add_options.push_back(AddOption("Exposure", "Input/All", "VisualShaderNodeInput", vformat(input_param_shader_modes, "exposure", "EXPOSURE"), { "exposure" }, VisualShaderNode::PORT_TYPE_SCALAR, -1, Shader::MODE_SPATIAL));
 	add_options.push_back(AddOption("InvProjectionMatrix", "Input/All", "VisualShaderNodeInput", vformat(input_param_shader_modes, "inv_projection_matrix", "INV_PROJECTION_MATRIX"), { "inv_projection_matrix" }, VisualShaderNode::PORT_TYPE_TRANSFORM, -1, Shader::MODE_SPATIAL));
 	add_options.push_back(AddOption("InvViewMatrix", "Input/All", "VisualShaderNodeInput", vformat(input_param_shader_modes, "inv_view_matrix", "INV_VIEW_MATRIX"), { "inv_view_matrix" }, VisualShaderNode::PORT_TYPE_TRANSFORM, -1, Shader::MODE_SPATIAL));
diff --git a/scene/resources/visual_shader.cpp b/scene/resources/visual_shader.cpp
index a144c5ba83..c3665a462c 100644
--- a/scene/resources/visual_shader.cpp
+++ b/scene/resources/visual_shader.cpp
@@ -3082,6 +3082,7 @@ const VisualShaderNodeInput::Port VisualShaderNodeInput::ports[] = {
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_VERTEX, VisualShaderNode::PORT_TYPE_VECTOR_3D, "camera_direction_world", "CAMERA_DIRECTION_WORLD" },
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_VERTEX, VisualShaderNode::PORT_TYPE_VECTOR_3D, "camera_position_world", "CAMERA_POSITION_WORLD" },
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_VERTEX, VisualShaderNode::PORT_TYPE_SCALAR_UINT, "camera_visible_layers", "CAMERA_VISIBLE_LAYERS" },
+	{ Shader::MODE_SPATIAL, VisualShader::TYPE_VERTEX, VisualShaderNode::PORT_TYPE_SCALAR, "clip_space_far", "CLIP_SPACE_FAR" },
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_VERTEX, VisualShaderNode::PORT_TYPE_VECTOR_4D, "color", "COLOR" },
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_VERTEX, VisualShaderNode::PORT_TYPE_VECTOR_4D, "custom0", "CUSTOM0" },
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_VERTEX, VisualShaderNode::PORT_TYPE_VECTOR_4D, "custom1", "CUSTOM1" },
@@ -3119,6 +3120,7 @@ const VisualShaderNodeInput::Port VisualShaderNodeInput::ports[] = {
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_FRAGMENT, VisualShaderNode::PORT_TYPE_VECTOR_3D, "camera_direction_world", "CAMERA_DIRECTION_WORLD" },
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_FRAGMENT, VisualShaderNode::PORT_TYPE_VECTOR_3D, "camera_position_world", "CAMERA_POSITION_WORLD" },
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_FRAGMENT, VisualShaderNode::PORT_TYPE_SCALAR_UINT, "camera_visible_layers", "CAMERA_VISIBLE_LAYERS" },
+	{ Shader::MODE_SPATIAL, VisualShader::TYPE_FRAGMENT, VisualShaderNode::PORT_TYPE_SCALAR, "clip_space_far", "CLIP_SPACE_FAR" },
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_FRAGMENT, VisualShaderNode::PORT_TYPE_VECTOR_4D, "color", "COLOR" },
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_FRAGMENT, VisualShaderNode::PORT_TYPE_SCALAR, "exposure", "EXPOSURE" },
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_FRAGMENT, VisualShaderNode::PORT_TYPE_VECTOR_3D, "eye_offset", "EYE_OFFSET" },
@@ -3150,6 +3152,7 @@ const VisualShaderNodeInput::Port VisualShaderNodeInput::ports[] = {
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_LIGHT, VisualShaderNode::PORT_TYPE_VECTOR_3D, "albedo", "ALBEDO" },
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_LIGHT, VisualShaderNode::PORT_TYPE_SCALAR, "attenuation", "ATTENUATION" },
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_LIGHT, VisualShaderNode::PORT_TYPE_VECTOR_3D, "backlight", "BACKLIGHT" },
+	{ Shader::MODE_SPATIAL, VisualShader::TYPE_LIGHT, VisualShaderNode::PORT_TYPE_SCALAR, "clip_space_far", "CLIP_SPACE_FAR" },
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_LIGHT, VisualShaderNode::PORT_TYPE_VECTOR_3D, "diffuse", "DIFFUSE_LIGHT" },
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_LIGHT, VisualShaderNode::PORT_TYPE_SCALAR, "exposure", "EXPOSURE" },
 	{ Shader::MODE_SPATIAL, VisualShader::TYPE_LIGHT, VisualShaderNode::PORT_TYPE_VECTOR_4D, "fragcoord", "FRAGCOORD" },
diff --git a/servers/rendering/renderer_rd/forward_clustered/scene_shader_forward_clustered.cpp b/servers/rendering/renderer_rd/forward_clustered/scene_shader_forward_clustered.cpp
index 42e1f7b6dc..6846c3f693 100644
--- a/servers/rendering/renderer_rd/forward_clustered/scene_shader_forward_clustered.cpp
+++ b/servers/rendering/renderer_rd/forward_clustered/scene_shader_forward_clustered.cpp
@@ -636,6 +636,7 @@ void SceneShaderForwardClustered::init(const String p_defines) {
 		actions.renames["CUSTOM2"] = "custom2_attrib";
 		actions.renames["CUSTOM3"] = "custom3_attrib";
 		actions.renames["OUTPUT_IS_SRGB"] = "SHADER_IS_SRGB";
+		actions.renames["CLIP_SPACE_FAR"] = "SHADER_SPACE_FAR";
 		actions.renames["LIGHT_VERTEX"] = "light_vertex";
 
 		actions.renames["NODE_POSITION_WORLD"] = "read_model_matrix[3].xyz";
diff --git a/servers/rendering/renderer_rd/forward_mobile/scene_shader_forward_mobile.cpp b/servers/rendering/renderer_rd/forward_mobile/scene_shader_forward_mobile.cpp
index cf661bb8f4..08982096c5 100644
--- a/servers/rendering/renderer_rd/forward_mobile/scene_shader_forward_mobile.cpp
+++ b/servers/rendering/renderer_rd/forward_mobile/scene_shader_forward_mobile.cpp
@@ -540,6 +540,7 @@ void SceneShaderForwardMobile::init(const String p_defines) {
 		actions.renames["CUSTOM2"] = "custom2_attrib";
 		actions.renames["CUSTOM3"] = "custom3_attrib";
 		actions.renames["OUTPUT_IS_SRGB"] = "SHADER_IS_SRGB";
+		actions.renames["CLIP_SPACE_FAR"] = "SHADER_SPACE_FAR";
 		actions.renames["LIGHT_VERTEX"] = "light_vertex";
 
 		actions.renames["NODE_POSITION_WORLD"] = "read_model_matrix[3].xyz";
diff --git a/servers/rendering/renderer_rd/shaders/forward_clustered/scene_forward_clustered.glsl b/servers/rendering/renderer_rd/shaders/forward_clustered/scene_forward_clustered.glsl
index 1420e7939a..35d29fed6a 100644
--- a/servers/rendering/renderer_rd/shaders/forward_clustered/scene_forward_clustered.glsl
+++ b/servers/rendering/renderer_rd/shaders/forward_clustered/scene_forward_clustered.glsl
@@ -7,6 +7,7 @@
 #include "scene_forward_clustered_inc.glsl"
 
 #define SHADER_IS_SRGB false
+#define SHADER_SPACE_FAR 0.0
 
 /* INPUT ATTRIBS */
 
@@ -638,6 +639,7 @@ void main() {
 #VERSION_DEFINES
 
 #define SHADER_IS_SRGB false
+#define SHADER_SPACE_FAR 0.0
 
 /* Specialization Constants (Toggles) */
 
diff --git a/servers/rendering/renderer_rd/shaders/forward_mobile/scene_forward_mobile.glsl b/servers/rendering/renderer_rd/shaders/forward_mobile/scene_forward_mobile.glsl
index 90947aca80..c266161834 100644
--- a/servers/rendering/renderer_rd/shaders/forward_mobile/scene_forward_mobile.glsl
+++ b/servers/rendering/renderer_rd/shaders/forward_mobile/scene_forward_mobile.glsl
@@ -8,6 +8,7 @@
 #include "scene_forward_mobile_inc.glsl"
 
 #define SHADER_IS_SRGB false
+#define SHADER_SPACE_FAR 0.0
 
 /* INPUT ATTRIBS */
 
@@ -498,6 +499,7 @@ void main() {
 #VERSION_DEFINES
 
 #define SHADER_IS_SRGB false
+#define SHADER_SPACE_FAR 0.0
 
 /* Specialization Constants */
 
diff --git a/servers/rendering/shader_types.cpp b/servers/rendering/shader_types.cpp
index de396cd18b..f498c0bf93 100644
--- a/servers/rendering/shader_types.cpp
+++ b/servers/rendering/shader_types.cpp
@@ -97,6 +97,7 @@ ShaderTypes::ShaderTypes() {
 	shader_modes[RS::SHADER_SPATIAL].functions["vertex"].built_ins["MODELVIEW_NORMAL_MATRIX"] = ShaderLanguage::TYPE_MAT3;
 	shader_modes[RS::SHADER_SPATIAL].functions["vertex"].built_ins["VIEWPORT_SIZE"] = constt(ShaderLanguage::TYPE_VEC2);
 	shader_modes[RS::SHADER_SPATIAL].functions["vertex"].built_ins["OUTPUT_IS_SRGB"] = constt(ShaderLanguage::TYPE_BOOL);
+	shader_modes[RS::SHADER_SPATIAL].functions["vertex"].built_ins["CLIP_SPACE_FAR"] = constt(ShaderLanguage::TYPE_FLOAT);
 	shader_modes[RS::SHADER_SPATIAL].functions["vertex"].built_ins["MAIN_CAM_INV_VIEW_MATRIX"] = constt(ShaderLanguage::TYPE_MAT4);
 
 	shader_modes[RS::SHADER_SPATIAL].functions["vertex"].built_ins["NODE_POSITION_WORLD"] = constt(ShaderLanguage::TYPE_VEC3);
@@ -159,6 +160,7 @@ ShaderTypes::ShaderTypes() {
 	shader_modes[RS::SHADER_SPATIAL].functions["fragment"].built_ins["EYE_OFFSET"] = constt(ShaderLanguage::TYPE_VEC3);
 
 	shader_modes[RS::SHADER_SPATIAL].functions["fragment"].built_ins["OUTPUT_IS_SRGB"] = constt(ShaderLanguage::TYPE_BOOL);
+	shader_modes[RS::SHADER_SPATIAL].functions["fragment"].built_ins["CLIP_SPACE_FAR"] = constt(ShaderLanguage::TYPE_FLOAT);
 
 	shader_modes[RS::SHADER_SPATIAL].functions["fragment"].built_ins["MODEL_MATRIX"] = constt(ShaderLanguage::TYPE_MAT4);
 	shader_modes[RS::SHADER_SPATIAL].functions["fragment"].built_ins["MODEL_NORMAL_MATRIX"] = constt(ShaderLanguage::TYPE_MAT3);
@@ -202,6 +204,7 @@ ShaderTypes::ShaderTypes() {
 	shader_modes[RS::SHADER_SPATIAL].functions["light"].built_ins["DIFFUSE_LIGHT"] = ShaderLanguage::TYPE_VEC3;
 	shader_modes[RS::SHADER_SPATIAL].functions["light"].built_ins["SPECULAR_LIGHT"] = ShaderLanguage::TYPE_VEC3;
 	shader_modes[RS::SHADER_SPATIAL].functions["light"].built_ins["OUTPUT_IS_SRGB"] = constt(ShaderLanguage::TYPE_BOOL);
+	shader_modes[RS::SHADER_SPATIAL].functions["light"].built_ins["CLIP_SPACE_FAR"] = constt(ShaderLanguage::TYPE_FLOAT);
 	shader_modes[RS::SHADER_SPATIAL].functions["light"].built_ins["ALPHA"] = ShaderLanguage::TYPE_FLOAT;
 
 	shader_modes[RS::SHADER_SPATIAL].functions["light"].can_discard = true;