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f14783d511
The geo nodes implementations of the `mix`, `addition`, `multiplication` and `subtraction` color mix modes are both faster and have better numerical properties than the ones we use in Cycles, OSL and EEVEE. This PR ports the geo nodes implementations of those color mix modes to Cycles, OSL and EEVEE. Additionally, the SVM mix function implementation is templatized and a new function called "endvalue_preserving_mix" is added for the alternative variant of linear interpolation. Pull Request: https://projects.blender.org/blender/blender/pulls/158022
83 lines
2.6 KiB
C
83 lines
2.6 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/color_util.h"
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#include "kernel/svm/node_types.h"
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#include "kernel/svm/util.h"
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CCL_NAMESPACE_BEGIN
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/* Node */
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ccl_device_noinline void svm_node_mix(ccl_private float *ccl_restrict stack,
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const ccl_global SVMNodeMix &ccl_restrict node)
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{
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const float fac = stack_load(stack, node.fac);
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const float3 c1 = stack_load(stack, node.c1);
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const float3 c2 = stack_load(stack, node.c2);
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const float3 result = svm_mix_clamped_factor(node.mix_type, fac, c1, c2);
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stack_store_float3(stack, node.result_offset, result);
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}
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ccl_device_noinline void svm_node_mix_color(ccl_private float *ccl_restrict stack,
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const ccl_global SVMNodeMixColor &ccl_restrict node)
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{
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float t = stack_load(stack, node.fac);
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if (node.use_clamp > 0) {
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t = saturatef(t);
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}
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const float3 a = stack_load(stack, node.a);
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const float3 b = stack_load(stack, node.b);
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float3 result = svm_mix(node.blend_type, t, a, b);
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if (node.use_clamp_result) {
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result = saturate(result);
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}
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stack_store_float3(stack, node.result_offset, result);
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}
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ccl_device_noinline void svm_node_mix_float(ccl_private float *ccl_restrict stack,
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const ccl_global SVMNodeMixFloat &ccl_restrict node)
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{
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float t = stack_load(stack, node.fac);
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if (node.use_clamp > 0) {
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t = saturatef(t);
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}
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const float a = stack_load(stack, node.a);
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const float b = stack_load(stack, node.b);
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const float result = endvalue_preserving_mix(a, b, t);
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stack_store_float(stack, node.result_offset, result);
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}
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ccl_device_noinline void svm_node_mix_vector(ccl_private float *ccl_restrict stack,
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const ccl_global SVMNodeMixVector &ccl_restrict node)
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{
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float t = stack_load(stack, node.fac);
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if (node.use_clamp > 0) {
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t = saturatef(t);
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}
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const float3 a = stack_load(stack, node.a);
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const float3 b = stack_load(stack, node.b);
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const float3 result = endvalue_preserving_mix(a, b, t);
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stack_store_float3(stack, node.result_offset, result);
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}
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ccl_device_noinline void svm_node_mix_vector_non_uniform(
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ccl_private float *ccl_restrict stack,
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const ccl_global SVMNodeMixVectorNonUniform &ccl_restrict node)
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{
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float3 t = stack_load(stack, node.fac);
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if (node.use_clamp > 0) {
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t = saturate(t);
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}
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const float3 a = stack_load(stack, node.a);
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const float3 b = stack_load(stack, node.b);
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const float3 result = endvalue_preserving_mix(a, b, t);
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stack_store_float3(stack, node.result_offset, result);
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}
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CCL_NAMESPACE_END
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