[Krom] Binding render target for compute shader doesn't work

[MoritzBrueckner]

Describe the bug When using a render target instead of a "regular" image as a writeonly image2D uniform in a compute shader on Krom (Windows), the texture is not bound correctly.

To Reproduce

1. Clone https://github.com/Kha-Samples/ComputeShader (e34a690)
2. In Main.main(), replace line 36

   texture = Image.create(256, 256, TextureFormat.RGBA128);

   with

   texture = Image.createRenderTarget(256, 256, TextureFormat.RGBA128);

3. Publish to Krom and you will see a black screen.

Expected behavior The visual result when using a rendertarget should be the same as when using a regular image.

Screenshots Using a regular image:

Using a render target: (it's a black screen)

Inspecting the render target version in RenderDoc (the capture is attached below):

Execution Environment:

• Host system (where you compile your code): Windows 10
• Target system (where you run your code): Windows 10
• IDE used (if any): VS Codium
• Kha revision: 59478ab
• Using latest Krom_bin (d99ac49)
• Kha build output (Using Kha...):

  Using Kha (59478aba) from [...]\Kha
  Creating Kha project.
  Compiling shader 1 of 3 (shader.frag.glsl).
  Compiling shader 2 of 3 (shader.vert.glsl).
  Compiling shader 3 of 3 (test.comp.glsl).
  Compiling shader 1 of 8 (painter-colored.frag.glsl).
  Compiling shader 2 of 8 (painter-colored.vert.glsl).
  Compiling shader 3 of 8 (painter-image.frag.glsl).
  Compiling shader 4 of 8 (painter-image.vert.glsl).
  Compiling shader 5 of 8 (painter-text.frag.glsl).
  Compiling shader 6 of 8 (painter-text.vert.glsl).
  Compiling shader 7 of 8 (painter-video.frag.glsl).
  Compiling shader 8 of 8 (painter-video.vert.glsl).
  Done.

• Application output (if it runs): -

Additional context RenderDoc capture: ComputeShader_RenderTarget.zip

Using a different texture format (tested all RGBA variants), using Access.ReadWrite in setTexture() and making the uniform restricted don't change the outcome, there's still a black screen.