bfa0ee13d5
This patch is a response to T92588 and is implemented as a Function/Shader node. This node has support for Float, Vector and Color data types. For Vector it supports uniform and non-uniform mixing. For Color it now has the option to remove factor clamping. It replaces the Mix RGB for Shader and Geometry node trees. As discussed in T96219, this patch converts existing nodes in .blend files. The old node is still available in the Python API but hidden from the menus. Reviewed By: HooglyBoogly, JacquesLucke, simonthommes, brecht Maniphest Tasks: T92588 Differential Revision: https://developer.blender.org/D13749
115 lines
4.3 KiB
C
115 lines
4.3 KiB
C
/* SPDX-License-Identifier: Apache-2.0
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* Copyright 2011-2022 Blender Foundation */
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#pragma once
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CCL_NAMESPACE_BEGIN
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/* Node */
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ccl_device_noinline int svm_node_mix(KernelGlobals kg,
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ccl_private ShaderData *sd,
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ccl_private float *stack,
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uint fac_offset,
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uint c1_offset,
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uint c2_offset,
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int offset)
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{
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/* read extra data */
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uint4 node1 = read_node(kg, &offset);
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float fac = stack_load_float(stack, fac_offset);
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float3 c1 = stack_load_float3(stack, c1_offset);
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float3 c2 = stack_load_float3(stack, c2_offset);
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float3 result = svm_mix_clamped_factor((NodeMix)node1.y, fac, c1, c2);
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stack_store_float3(stack, node1.z, result);
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return offset;
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}
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ccl_device_noinline void svm_node_mix_color(ccl_private ShaderData *sd,
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ccl_private float *stack,
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uint options,
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uint input_offset,
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uint result_offset)
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{
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uint use_clamp, blend_type, use_clamp_result;
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uint fac_in_stack_offset, a_in_stack_offset, b_in_stack_offset;
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svm_unpack_node_uchar3(options, &use_clamp, &blend_type, &use_clamp_result);
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svm_unpack_node_uchar3(
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input_offset, &fac_in_stack_offset, &a_in_stack_offset, &b_in_stack_offset);
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float t = stack_load_float(stack, fac_in_stack_offset);
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if (use_clamp > 0) {
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t = saturatef(t);
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}
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float3 a = stack_load_float3(stack, a_in_stack_offset);
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float3 b = stack_load_float3(stack, b_in_stack_offset);
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float3 result = svm_mix((NodeMix)blend_type, t, a, b);
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if (use_clamp_result) {
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result = saturate(result);
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}
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stack_store_float3(stack, result_offset, result);
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}
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ccl_device_noinline void svm_node_mix_float(ccl_private ShaderData *sd,
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ccl_private float *stack,
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uint use_clamp,
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uint input_offset,
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uint result_offset)
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{
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uint fac_in_stack_offset, a_in_stack_offset, b_in_stack_offset;
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svm_unpack_node_uchar3(
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input_offset, &fac_in_stack_offset, &a_in_stack_offset, &b_in_stack_offset);
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float t = stack_load_float(stack, fac_in_stack_offset);
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if (use_clamp > 0) {
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t = saturatef(t);
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}
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float a = stack_load_float(stack, a_in_stack_offset);
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float b = stack_load_float(stack, b_in_stack_offset);
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float result = a * (1 - t) + b * t;
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stack_store_float(stack, result_offset, result);
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}
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ccl_device_noinline void svm_node_mix_vector(ccl_private ShaderData *sd,
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ccl_private float *stack,
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uint input_offset,
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uint result_offset)
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{
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uint use_clamp, fac_in_stack_offset, a_in_stack_offset, b_in_stack_offset;
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svm_unpack_node_uchar4(
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input_offset, &use_clamp, &fac_in_stack_offset, &a_in_stack_offset, &b_in_stack_offset);
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float t = stack_load_float(stack, fac_in_stack_offset);
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if (use_clamp > 0) {
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t = saturatef(t);
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}
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float3 a = stack_load_float3(stack, a_in_stack_offset);
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float3 b = stack_load_float3(stack, b_in_stack_offset);
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float3 result = a * (one_float3() - t) + b * t;
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stack_store_float3(stack, result_offset, result);
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}
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ccl_device_noinline void svm_node_mix_vector_non_uniform(ccl_private ShaderData *sd,
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ccl_private float *stack,
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uint input_offset,
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uint result_offset)
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{
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uint use_clamp, fac_in_stack_offset, a_in_stack_offset, b_in_stack_offset;
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svm_unpack_node_uchar4(
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input_offset, &use_clamp, &fac_in_stack_offset, &a_in_stack_offset, &b_in_stack_offset);
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float3 t = stack_load_float3(stack, fac_in_stack_offset);
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if (use_clamp > 0) {
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t = saturate(t);
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}
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float3 a = stack_load_float3(stack, a_in_stack_offset);
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float3 b = stack_load_float3(stack, b_in_stack_offset);
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float3 result = a * (one_float3() - t) + b * t;
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stack_store_float3(stack, result_offset, result);
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}
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CCL_NAMESPACE_END
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