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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
67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
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*
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* SPDX-License-Identifier: Apache-2.0 */
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#pragma once
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#include "kernel/svm/node_types.h"
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#include "kernel/svm/util.h"
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#include "util/hash.h"
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CCL_NAMESPACE_BEGIN
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ccl_device_noinline void svm_node_tex_white_noise(
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ccl_private float *ccl_restrict stack,
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const ccl_global SVMNodeTexWhiteNoise &ccl_restrict node)
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{
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const float3 vector = stack_load(stack, node.vector);
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const float w = stack_load(stack, node.w);
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if (stack_valid(node.color_offset)) {
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float3 color;
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switch (node.dimensions) {
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case 1:
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color = hash_float_to_float3(w);
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break;
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case 2:
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color = hash_float2_to_float3(make_float2(vector.x, vector.y));
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break;
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case 3:
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color = hash_float3_to_float3(vector);
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break;
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case 4:
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color = hash_float4_to_float3(make_float4(vector, w));
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break;
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default:
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color = make_float3(1.0f, 0.0f, 1.0f);
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kernel_assert(0);
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break;
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}
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stack_store_float3(stack, node.color_offset, color);
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}
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if (stack_valid(node.value_offset)) {
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float value;
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switch (node.dimensions) {
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case 1:
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value = hash_float_to_float(w);
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break;
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case 2:
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value = hash_float2_to_float(make_float2(vector.x, vector.y));
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break;
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case 3:
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value = hash_float3_to_float(vector);
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break;
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case 4:
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value = hash_float4_to_float(make_float4(vector, w));
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break;
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default:
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value = 0.0f;
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kernel_assert(0);
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break;
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}
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stack_store_float(stack, node.value_offset, value);
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}
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}
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CCL_NAMESPACE_END
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