Problem with convert GLES3 shader to GLES2

Xarcane

Well situation is pretty simple, I have no idea how to convert this shader below from GLES3 to GLES2, is anyone here who can handle it?

extends CPUParticles2D

func initialize(sprite : Texture):
	
	process_material.set_shader_param("emission_box_extents", 
		Vector3(sprite.get_width() / 2.0, sprite.get_height() / 2.0, 1))
	
	process_material.set_shader_param("sprite", sprite)
	
	amount = sprite.get_width() * sprite.get_height()
	
	emitting = true

Calinou

Well situation is pretty simple, I have no idea how to convert this shader below from GLES3 to GLES2, is anyone here who can handle it?

What's the end goal of this shader? The code you showed is CPUParticles2D, and CPUParticles2D does not support particle shaders unlike GPUParticles2D (which is GLES3-only).

Due to GLES2 limitations, particle shaders cannot be ported from GLES3 to GLES2.