diff --git a/drivers/gles2/shader_compiler_gles2.cpp b/drivers/gles2/shader_compiler_gles2.cpp
index 7c75e852f9a3..206f6ffafa2f 100644
--- a/drivers/gles2/shader_compiler_gles2.cpp
+++ b/drivers/gles2/shader_compiler_gles2.cpp
@@ -1035,6 +1035,9 @@ ShaderCompilerGLES2::ShaderCompilerGLES2() {
 	actions[VS::SHADER_CANVAS_ITEM].renames["PROJECTION_MATRIX"] = "projection_matrix";
 	actions[VS::SHADER_CANVAS_ITEM].renames["EXTRA_MATRIX"] = "extra_matrix_instance";
 	actions[VS::SHADER_CANVAS_ITEM].renames["TIME"] = "time";
+	actions[VS::SHADER_CANVAS_ITEM].renames["PI"] = _MKSTR(Math_PI);
+	actions[VS::SHADER_CANVAS_ITEM].renames["TAU"] = _MKSTR(Math_TAU);
+	actions[VS::SHADER_CANVAS_ITEM].renames["E"] = _MKSTR(Math_E);
 	actions[VS::SHADER_CANVAS_ITEM].renames["AT_LIGHT_PASS"] = "at_light_pass";
 	actions[VS::SHADER_CANVAS_ITEM].renames["INSTANCE_CUSTOM"] = "instance_custom";
 
@@ -1117,6 +1120,9 @@ ShaderCompilerGLES2::ShaderCompilerGLES2() {
 	//builtins
 
 	actions[VS::SHADER_SPATIAL].renames["TIME"] = "time";
+	actions[VS::SHADER_SPATIAL].renames["PI"] = _MKSTR(Math_PI);
+	actions[VS::SHADER_SPATIAL].renames["TAU"] = _MKSTR(Math_TAU);
+	actions[VS::SHADER_SPATIAL].renames["E"] = _MKSTR(Math_E);
 	actions[VS::SHADER_SPATIAL].renames["VIEWPORT_SIZE"] = "viewport_size";
 
 	actions[VS::SHADER_SPATIAL].renames["FRAGCOORD"] = "gl_FragCoord";
diff --git a/drivers/gles3/shader_compiler_gles3.cpp b/drivers/gles3/shader_compiler_gles3.cpp
index 7966fe00856d..c28bae5efb0e 100644
--- a/drivers/gles3/shader_compiler_gles3.cpp
+++ b/drivers/gles3/shader_compiler_gles3.cpp
@@ -1112,6 +1112,10 @@ ShaderCompilerGLES3::ShaderCompilerGLES3() {
 	actions[VS::SHADER_CANVAS_ITEM].renames["PROJECTION_MATRIX"] = "projection_matrix";
 	actions[VS::SHADER_CANVAS_ITEM].renames["EXTRA_MATRIX"] = "extra_matrix";
 	actions[VS::SHADER_CANVAS_ITEM].renames["TIME"] = "time";
+	actions[VS::SHADER_CANVAS_ITEM].renames["PI"] = _MKSTR(Math_PI);
+	actions[VS::SHADER_CANVAS_ITEM].renames["TAU"] = _MKSTR(Math_TAU);
+	actions[VS::SHADER_CANVAS_ITEM].renames["E"] = _MKSTR(Math_E);
+
 	actions[VS::SHADER_CANVAS_ITEM].renames["AT_LIGHT_PASS"] = "at_light_pass";
 	actions[VS::SHADER_CANVAS_ITEM].renames["INSTANCE_CUSTOM"] = "instance_custom";
 
@@ -1175,6 +1179,10 @@ ShaderCompilerGLES3::ShaderCompilerGLES3() {
 	//builtins
 
 	actions[VS::SHADER_SPATIAL].renames["TIME"] = "time";
+	actions[VS::SHADER_SPATIAL].renames["PI"] = _MKSTR(Math_PI);
+	actions[VS::SHADER_SPATIAL].renames["TAU"] = _MKSTR(Math_TAU);
+	actions[VS::SHADER_SPATIAL].renames["E"] = _MKSTR(Math_E);
+
 	actions[VS::SHADER_SPATIAL].renames["VIEWPORT_SIZE"] = "viewport_size";
 
 	actions[VS::SHADER_SPATIAL].renames["FRAGCOORD"] = "gl_FragCoord";
@@ -1282,7 +1290,12 @@ ShaderCompilerGLES3::ShaderCompilerGLES3() {
 	actions[VS::SHADER_PARTICLES].renames["RESTART"] = "restart";
 	actions[VS::SHADER_PARTICLES].renames["CUSTOM"] = "out_custom";
 	actions[VS::SHADER_PARTICLES].renames["TRANSFORM"] = "xform";
+
 	actions[VS::SHADER_PARTICLES].renames["TIME"] = "time";
+	actions[VS::SHADER_PARTICLES].renames["PI"] = _MKSTR(Math_PI);
+	actions[VS::SHADER_PARTICLES].renames["TAU"] = _MKSTR(Math_TAU);
+	actions[VS::SHADER_PARTICLES].renames["E"] = _MKSTR(Math_E);
+
 	actions[VS::SHADER_PARTICLES].renames["LIFETIME"] = "lifetime";
 	actions[VS::SHADER_PARTICLES].renames["DELTA"] = "local_delta";
 	actions[VS::SHADER_PARTICLES].renames["NUMBER"] = "particle_number";
diff --git a/scene/resources/particles_material.cpp b/scene/resources/particles_material.cpp
index ae7008f5b8e5..409d2d179915 100644
--- a/scene/resources/particles_material.cpp
+++ b/scene/resources/particles_material.cpp
@@ -299,8 +299,7 @@ void ParticlesMaterial::_update_shader() {
 	code += "	float scale_rand = rand_from_seed(alt_seed);\n";
 	code += "	float hue_rot_rand = rand_from_seed(alt_seed);\n";
 	code += "	float anim_offset_rand = rand_from_seed(alt_seed);\n";
-	code += "	float pi = 3.14159;\n";
-	code += "	float degree_to_rad = pi / 180.0;\n";
+	code += "	float degree_to_rad = PI / 180.0;\n";
 	code += "\n";
 
 	if (emission_shape == EMISSION_SHAPE_POINTS || emission_shape == EMISSION_SHAPE_DIRECTED_POINTS) {
diff --git a/servers/visual/shader_types.cpp b/servers/visual/shader_types.cpp
index ce09b84a7daf..c24205da43ae 100644
--- a/servers/visual/shader_types.cpp
+++ b/servers/visual/shader_types.cpp
@@ -54,6 +54,9 @@ ShaderTypes::ShaderTypes() {
 	/*************** SPATIAL ***********************/
 
 	shader_modes[VS::SHADER_SPATIAL].functions["global"].built_ins["TIME"] = constt(ShaderLanguage::TYPE_FLOAT);
+	shader_modes[VS::SHADER_SPATIAL].functions["global"].built_ins["PI"] = constt(ShaderLanguage::TYPE_FLOAT);
+	shader_modes[VS::SHADER_SPATIAL].functions["global"].built_ins["TAU"] = constt(ShaderLanguage::TYPE_FLOAT);
+	shader_modes[VS::SHADER_SPATIAL].functions["global"].built_ins["E"] = constt(ShaderLanguage::TYPE_FLOAT);
 
 	shader_modes[VS::SHADER_SPATIAL].functions["vertex"].built_ins["VERTEX"] = ShaderLanguage::TYPE_VEC3;
 	shader_modes[VS::SHADER_SPATIAL].functions["vertex"].built_ins["NORMAL"] = ShaderLanguage::TYPE_VEC3;
@@ -200,6 +203,9 @@ ShaderTypes::ShaderTypes() {
 	/************ CANVAS ITEM **************************/
 
 	shader_modes[VS::SHADER_CANVAS_ITEM].functions["global"].built_ins["TIME"] = constt(ShaderLanguage::TYPE_FLOAT);
+	shader_modes[VS::SHADER_CANVAS_ITEM].functions["global"].built_ins["PI"] = constt(ShaderLanguage::TYPE_FLOAT);
+	shader_modes[VS::SHADER_CANVAS_ITEM].functions["global"].built_ins["TAU"] = constt(ShaderLanguage::TYPE_FLOAT);
+	shader_modes[VS::SHADER_CANVAS_ITEM].functions["global"].built_ins["E"] = constt(ShaderLanguage::TYPE_FLOAT);
 
 	shader_modes[VS::SHADER_CANVAS_ITEM].functions["vertex"].built_ins["VERTEX"] = ShaderLanguage::TYPE_VEC2;
 	shader_modes[VS::SHADER_CANVAS_ITEM].functions["vertex"].built_ins["UV"] = ShaderLanguage::TYPE_VEC2;
@@ -265,6 +271,10 @@ ShaderTypes::ShaderTypes() {
 	/************ PARTICLES **************************/
 
 	shader_modes[VS::SHADER_PARTICLES].functions["global"].built_ins["TIME"] = constt(ShaderLanguage::TYPE_FLOAT);
+	shader_modes[VS::SHADER_PARTICLES].functions["global"].built_ins["PI"] = constt(ShaderLanguage::TYPE_FLOAT);
+	shader_modes[VS::SHADER_PARTICLES].functions["global"].built_ins["TAU"] = constt(ShaderLanguage::TYPE_FLOAT);
+	shader_modes[VS::SHADER_PARTICLES].functions["global"].built_ins["E"] = constt(ShaderLanguage::TYPE_FLOAT);
+
 	shader_modes[VS::SHADER_PARTICLES].functions["vertex"].built_ins["COLOR"] = ShaderLanguage::TYPE_VEC4;
 	shader_modes[VS::SHADER_PARTICLES].functions["vertex"].built_ins["VELOCITY"] = ShaderLanguage::TYPE_VEC3;
 	shader_modes[VS::SHADER_PARTICLES].functions["vertex"].built_ins["MASS"] = ShaderLanguage::TYPE_FLOAT;