f987ef7b6e
This makes it possible to restore previous Blender 4.3 behavior of bump mapping, where the large filter width was sometimes (ab)used to get a bevel like effect on stepwise textures. For bump from the displacement socket, filter width remains fixed at 0.1. Ref #133991, #135841 Pull Request: https://projects.blender.org/blender/blender/pulls/136465
35 lines
1.1 KiB
Plaintext
35 lines
1.1 KiB
Plaintext
/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
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*
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* SPDX-License-Identifier: Apache-2.0 */
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#include "stdcycles.h"
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shader node_attribute(string bump_offset = "center",
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float bump_filter_width = BUMP_FILTER_WIDTH,
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string name = "",
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output point Vector = point(0.0, 0.0, 0.0),
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output color Color = 0.0,
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output float Fac = 0.0,
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output float Alpha = 0.0)
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{
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float data[4] = {0.0, 0.0, 0.0, 0.0};
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getattribute(name, data);
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Color = color(data[0], data[1], data[2]);
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Vector = point(Color);
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getattribute(name, Fac);
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Alpha = data[3];
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if (bump_offset == "dx") {
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Color += Dx(Color) * bump_filter_width;
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Vector += Dx(Vector) * bump_filter_width;
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Fac += Dx(Fac) * bump_filter_width;
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Alpha += Dx(Alpha) * bump_filter_width;
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}
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else if (bump_offset == "dy") {
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Color += Dy(Color) * bump_filter_width;
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Vector += Dy(Vector) * bump_filter_width;
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Fac += Dy(Fac) * bump_filter_width;
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Alpha += Dy(Alpha) * bump_filter_width;
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}
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}
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