Texture in Visual Shader (CanvasItem) for GPUParticles2D is stretched/clipped?

Help
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1

Godot Version

4.7.stable

Question

Hi everyone! I’m currently working on a 2D particle effect in Godot and ran into a weird issue with textures in a Visual Shader.

Here are my setup and the issue details:

  • Node: GPUParticles2Dand nothing changed in the ProcessMaterial.
  • Material: CanvasItem ShaderMaterial assigned to the Material property (not the Process Material).
  • Shader: A very simple Visual Shader. I took an external Texture2D and connected its color output directly to the Fragment → Output → color port.

The Problem:
Ideally, this should replace/overwrite the default particle texture. However, the custom texture appears stretched/distorted and is being cropped/cut off at the edges.

image
image833×410 19.7 KB

image
image765×322 31.6 KB

Is there a specific way to properly map a custom Texture2D to a particle’s quad using a CanvasItem Visual Shader? Do I need to hook up something specific to the UV coordinates?

PS: If i connect the texture’s alpha channel to the output color port, its shape is correct. If i connect the color to output color and alpha channel to the output alpha, it’s also correctly displayed. It’s just stretched/clipped without alpha channel.

Here is my image:

test
test200×200 601 Bytes