9cfc7967dd
* Replace license text in headers with SPDX identifiers. * Remove specific license info from outdated readme.txt, instead leave details to the source files. * Add list of SPDX license identifiers used, and corresponding license texts. * Update copyright dates while we're at it. Ref D14069, T95597
49 lines
1.5 KiB
C
49 lines
1.5 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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/* Checker */
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ccl_device float svm_checker(float3 p)
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{
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/* avoid precision issues on unit coordinates */
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p.x = (p.x + 0.000001f) * 0.999999f;
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p.y = (p.y + 0.000001f) * 0.999999f;
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p.z = (p.z + 0.000001f) * 0.999999f;
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int xi = abs(float_to_int(floorf(p.x)));
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int yi = abs(float_to_int(floorf(p.y)));
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int zi = abs(float_to_int(floorf(p.z)));
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return ((xi % 2 == yi % 2) == (zi % 2)) ? 1.0f : 0.0f;
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}
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ccl_device_noinline void svm_node_tex_checker(KernelGlobals kg,
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ccl_private ShaderData *sd,
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ccl_private float *stack,
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uint4 node)
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{
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uint co_offset, color1_offset, color2_offset, scale_offset;
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uint color_offset, fac_offset;
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svm_unpack_node_uchar4(node.y, &co_offset, &color1_offset, &color2_offset, &scale_offset);
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svm_unpack_node_uchar2(node.z, &color_offset, &fac_offset);
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float3 co = stack_load_float3(stack, co_offset);
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float3 color1 = stack_load_float3(stack, color1_offset);
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float3 color2 = stack_load_float3(stack, color2_offset);
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float scale = stack_load_float_default(stack, scale_offset, node.w);
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float f = svm_checker(co * scale);
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if (stack_valid(color_offset))
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stack_store_float3(stack, color_offset, (f == 1.0f) ? color1 : color2);
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if (stack_valid(fac_offset))
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stack_store_float(stack, fac_offset, f);
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}
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CCL_NAMESPACE_END
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