Merge pull request #33431 from Kaonnull/bugParticles2D_2

Fixed the particles2D prematurely animation ending

scene/resources/particles_material.cpp

@@ -332,7 +332,7 @@ void ParticlesMaterial::_update_shader() {
 	code += "		float base_angle = (initial_angle + tex_angle) * mix(1.0, angle_rand, initial_angle_random);\n";
 	code += "		CUSTOM.x = base_angle * degree_to_rad;\n"; // angle
 	code += "		CUSTOM.y = 0.0;\n"; // phase
-	code += "		CUSTOM.w = LIFETIME * (1.0 - lifetime_randomness * rand_from_seed(alt_seed));\n";
+	code += "		CUSTOM.w = (1.0 - lifetime_randomness * rand_from_seed(alt_seed));\n";
 	code += "		CUSTOM.z = (anim_offset + tex_anim_offset) * mix(1.0, anim_offset_rand, anim_offset_random);\n"; // animation offset (0-1)
 
 	switch (emission_shape) {