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Error creating FrameBuffer in latest version

See original GitHub issue

Issue details

The creation of a Framebuffer is failing in v1.9.14 in the lwjgl 2 backend. The same code works well in v1.9.13.

Digging in the changes, I think that error is produced by the next commit created by @mgsx-dev

https://github.com/libgdx/libgdx/commit/1cfb4a8b5b6fdd8275ef7962a107f6b81166865b

Reproduction steps/code

Try to create a Framebuffer:

		FrameBuffer fbo = new FrameBuffer(Format.RGB565, w, h, false);

Version of LibGDX and/or relevant dependencies

This only happens in v1.9.14.

Stacktrace

Exception in thread "LWJGL Application" org.lwjgl.opengl.OpenGLException: Cannot use offsets when Pixel Unpack Buffer Object is disabled
	at org.lwjgl.opengl.GLChecks.ensureUnpackPBOenabled(GLChecks.java:125)
	at org.lwjgl.opengl.GL11.glTexImage2D(GL11.java:2899)
	at com.badlogic.gdx.backends.lwjgl.LwjglGL20.glTexImage2D(LwjglGL20.java:598)
	at com.badlogic.gdx.graphics.glutils.GLOnlyTextureData.consumeCustomData(GLOnlyTextureData.java:78)
	at com.badlogic.gdx.graphics.GLTexture.uploadImageData(GLTexture.java:270)
	at com.badlogic.gdx.graphics.GLTexture.uploadImageData(GLTexture.java:257)
	at com.badlogic.gdx.graphics.Texture.load(Texture.java:159)
	at com.badlogic.gdx.graphics.Texture.<init>(Texture.java:147)
	at com.badlogic.gdx.graphics.Texture.<init>(Texture.java:142)
	at com.badlogic.gdx.graphics.glutils.FrameBuffer.createTexture(FrameBuffer.java:81)
	at com.badlogic.gdx.graphics.glutils.FrameBuffer.createTexture(FrameBuffer.java:42)
	at com.badlogic.gdx.graphics.glutils.GLFrameBuffer.build(GLFrameBuffer.java:174)
	at com.badlogic.gdx.graphics.glutils.FrameBuffer.<init>(FrameBuffer.java:75)
	at com.badlogic.gdx.graphics.glutils.FrameBuffer.<init>(FrameBuffer.java:57)
	at com.bladecoder.engine.model.World.takeScreenshot(World.java:824)```

Please select the affected platforms

Android
iOS
HTML/GWT
Windows
Linux
MacOS

Issue Analytics

State:
Created 3 years ago
Comments:10 (6 by maintainers)

Top GitHub Comments

4reactions

tommyettingercommented, Aug 6, 2021

I just tested this with 1.10.0, as you said, @Xjidea , by adding FrameBuffer fbo = new FrameBuffer(Pixmap.Format.RGBA8888, Gdx.graphics.getWidth(), Gdx.graphics.getHeight(), false); to the start of my create() method. There is no difference with that line in or out; both work fine. This is true for LWJGL 2 and 3. Check your dependencies for anything that might be pulling 1.9.14, which is the release that has the bug, and don’t use snapshot releases after the following stable release is out, because the snapshot could cease to exist anytime. This bug is fixed, so any other issues are related to something else in your code, and should be discussed further in the Discord. Be prepared to paste relevant code, answer questions, etc. if you want your problem solved.

1reaction

Tom-Skicommented, Feb 8, 2021

This has been fixed in the latest snapshot.