The use of a struct for device strings caused the CUDA compiler to
generate byte arrays as the argument type, whereas OSL generated
primitive integer types (for the hash). Fix that by using a typedef
instead so that the CUDA compiler too will use an integer type in the
PTX it generates.
Maniphest Tasks: T101222
The OSL GPU services implementation of "osl_get_matrix" and
"osl_get_inverse_matrix" was missing support for the "common",
"shader" and "object" matrices and thus any matrix operations in OSL
shaders using these would not work. This patch adds the proper
implementation copied from the OSL CPU services.
Maniphest Tasks: T101222
Commit c8dd33f5a37b6a6db0b6950d24f9a7cff5ceb799 in OSL
changed behavior of shader parameters that reference each other
and are also overwritten with an instance value.
This is causing the "NormalIn" parameter of a few OSL nodes in
Cycles to be set to zero somehow, which should instead have
received the value from a "node_geometry" node Cycles generates
and connects automatically. I am not entirely sure why that is
happening, but these parameters are superfluous anyway, since
OSL already provides the necessary data in the global variable "N".
So this patch simply removes those parameters (which mimics
SVM, where these parameters do not exist either), which also
fixes the rendering artifacts that occured with recent OSL.
Maniphest Tasks: T101222
Differential Revision: https://developer.blender.org/D16470
This patch generalizes the OSL support in Cycles to include GPU
device types and adds an implementation for that in the OptiX
device. There are some caveats still, including simplified texturing
due to lack of OIIO on the GPU and a few missing OSL intrinsics.
Note that this is incomplete and missing an update to the OSL
library before being enabled! The implementation is already
committed now to simplify further development.
Maniphest Tasks: T101222
Differential Revision: https://developer.blender.org/D15902
