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// Copyright 2009 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include "common/ISPCMessages.h"
#include "rkcommon/math/LinearSpace.ih"
OSPRAY_BEGIN_ISPC_NAMESPACE
#define SHADINGCONTEXT_SIZE (programCount * programCount * 1024)
#define SHADINGCONTEXT_ALIGNMENT 64
struct ShadingContext
{
/*! Data storage. Has to be at the beginning of the class due to alignment. */
uniform int8 data[SHADINGCONTEXT_SIZE]; //!< Storage for BSDFs
uniform uint32 size; //!< Number of bytes occupied in storage
varying int dummy; // FIXME: needed to force correct alignment
};
inline void ShadingContext_Constructor(uniform ShadingContext *uniform self)
{
self->size = 0;
}
/*! Allocates aligned data. */
inline void *uniform ShadingContext_alloc(
uniform ShadingContext *uniform self, uniform uint32 size)
{
// print("ShadingContext_alloc: %, %\n", this->size, size);
void *uniform ptr = &self->data[self->size];
self->size = (self->size + size + SHADINGCONTEXT_ALIGNMENT - 1)
& ((uint32)(-SHADINGCONTEXT_ALIGNMENT));
#ifndef OSPRAY_TARGET_SYCL
if (self->size > SHADINGCONTEXT_SIZE)
postStatusMsg(ISPC_MSG_SHADING_CONTEXT, OSP_LOG_ERROR);
#endif
return ptr;
}
inline varying linear3f *uniform LinearSpace3f_create(
uniform ShadingContext *uniform ctx, const linear3f &l)
{
varying linear3f *uniform ptr =
(varying linear3f * uniform) ShadingContext_alloc(ctx, sizeof(linear3f));
*ptr = l;
return ptr;
}
OSPRAY_END_ISPC_NAMESPACE
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