Not OP but a lot of this seems pretty believable and easy to detect to me?
Dont the GPU specs allow for a certain lossiness in the math? Or like, at least they don't conform to IEEE 794 float specs w/ regard to order of operations, precision, degradation, etc.
So like, do a shitload of math ops in a glsl shader with a deterministic outcome, render the result to a texture, take the texture back and make sure the RGBA values match bit for bit with the numbers you expected?
Or to detect single bit errors in the gpu's local memory or caching just attach textures, read data into them, read it back, render back, etc etc.
Dont the GPU specs allow for a certain lossiness in the math? Or like, at least they don't conform to IEEE 794 float specs w/ regard to order of operations, precision, degradation, etc.
So like, do a shitload of math ops in a glsl shader with a deterministic outcome, render the result to a texture, take the texture back and make sure the RGBA values match bit for bit with the numbers you expected?
Or to detect single bit errors in the gpu's local memory or caching just attach textures, read data into them, read it back, render back, etc etc.