mirror of
https://github.com/blender/blender
synced 2026-09-29 04:37:17 +03:00
7ee94c067c
* Pass socket links and values in structs for each SVM node. * Always pass default values along with stack offset, encoded in SVMInputFloat and SVMInputFloat3. For slightly more efficient memory access the stack offset is encoded in a NaN float. * Simplify SVMCompiler API to use input_float, input_float3 input_link and output functions, instead of manual stack assignment. This was a leftover from early CUDA versions and old GPUs, where data was stored in textures as there was no L1/L2 cache for global memory. Assisted-by: Claude Opus 4.6 Co-authored-by: Sergey Sharybin <sergey@blender.org> Pull Request: https://projects.blender.org/blender/blender/pulls/156612
33 lines
973 B
C
33 lines
973 B
C
/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0 */
|
|
|
|
#pragma once
|
|
|
|
#include "kernel/svm/node_types.h"
|
|
#include "kernel/svm/util.h"
|
|
|
|
#include "kernel/util/ies.h"
|
|
|
|
CCL_NAMESPACE_BEGIN
|
|
|
|
ccl_device_noinline void svm_node_ies(KernelGlobals kg,
|
|
ccl_private ShaderData * /*sd*/,
|
|
ccl_private float *stack,
|
|
const ccl_global SVMNodeIES &ccl_restrict node)
|
|
{
|
|
float3 vector = stack_load_float3(stack, node.vector_offset);
|
|
const float strength = stack_load(stack, node.strength);
|
|
|
|
vector = normalize(vector);
|
|
const float v_angle = safe_acosf(-vector.z);
|
|
const float h_angle = atan2f(vector.x, vector.y) + M_PI_F;
|
|
|
|
const float fac = strength * kernel_ies_interp(kg, node.slot, h_angle, v_angle);
|
|
|
|
if (stack_valid(node.fac_offset)) {
|
|
stack_store_float(stack, node.fac_offset, fac);
|
|
}
|
|
}
|
|
|
|
CCL_NAMESPACE_END
|