091004f1b8
Allow compilation of shaders using C++ for linting and IDE support. Related #127983 Pull Request: https://projects.blender.org/blender/blender/pulls/128724
46 lines
1.3 KiB
GLSL
46 lines
1.3 KiB
GLSL
/* SPDX-FileCopyrightText: 2024 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#pragma once
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#include "infos/gpu_shader_sequencer_info.hh"
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SHADER_LIBRARY_CREATE_INFO(gpu_shader_sequencer_strips)
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/* Signed distance to rounded box, centered at origin.
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* Reference: https://iquilezles.org/articles/distfunctions2d/ */
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float sdf_rounded_box(vec2 pos, vec2 size, float radius)
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{
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vec2 q = abs(pos) - size + radius;
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return min(max(q.x, q.y), 0.0) + length(max(q, 0.0)) - radius;
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}
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void strip_box(float left,
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float right,
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float bottom,
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float top,
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vec2 pos,
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out vec2 r_pos1,
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out vec2 r_pos2,
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out vec2 r_size,
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out vec2 r_center,
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out vec2 r_pos,
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out float r_radius)
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{
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/* Snap to pixel grid coordinates, so that outline/border is non-fractional
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* pixel sizes. */
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r_pos1 = round(vec2(left, bottom));
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r_pos2 = round(vec2(right, top));
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/* Make sure strip is at least 1px wide. */
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r_pos2.x = max(r_pos2.x, r_pos1.x + 1.0);
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r_size = (r_pos2 - r_pos1) * 0.5;
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r_center = (r_pos1 + r_pos2) * 0.5;
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r_pos = round(pos);
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r_radius = context_data.round_radius;
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if (r_radius > r_size.x) {
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r_radius = 0.0;
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}
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}
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