问题
I have an OpenGL ES 2 code base that runs on iOS, Android, and on PC via the PowerVR emulation libraries.
When I run this code on an LG Optimus G LGE971, I see black artifacts on my model:
http://imageshack.us/photo/my-images/594/renderartifacts.png/
My first reaction was that the near clipping plane might be the issue, but because these artifacts appear on only select devices, I do not believe that is the issue. Any other ideas on what might be causing this?
Also, this isn't captured well in the above image, but the artifacts are not static -- they move around as the model rotates, etc.
回答1:
I think maybe Lighting Calculation in shader code was wrong by mistake.
That looks like only using Ambient light without diffuse & specular.
also I want you to check whether you converted the texture from BGRA to RGBA.
回答2:
The issue has been fixed. I fixed the issue by using
glTexImage2D()
with NULL for the buffer when I set up my mipmap levels, and then using
glTexSubImage2D()
when uploading the texture data into each level.
来源：https://stackoverflow.com/questions/15011389/black-artifacts-on-android-in-opengl-es-2