3b3a5731df
This unify the C++ and GLSL codebase style. The GLSL types are still in the backend compatibility layers to support python shaders. However, the C++ shader compilation layer doesn't have them to enforce correct type usage. Note that this is going to break pretty much all PRs in flight that targets shader code. Rel #137261 Pull Request: https://projects.blender.org/blender/blender/pulls/137369
78 lines
2.0 KiB
GLSL
78 lines
2.0 KiB
GLSL
/* SPDX-FileCopyrightText: 2017-2023 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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#include "infos/gpu_shader_keyframe_shape_info.hh"
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VERTEX_SHADER_CREATE_INFO(gpu_shader_keyframe_shape)
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#define line_falloff 1.0f
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#define circle_scale sqrt(2.0f / 3.1416f)
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#define square_scale sqrt(0.5f)
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#define diagonal_scale sqrt(0.5f)
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bool test(uint bit)
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{
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return (flags & bit) != 0u;
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}
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float2 line_thresholds(float width)
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{
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return float2(max(0.0f, width - line_falloff), width);
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}
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void main()
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{
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gl_Position = ModelViewProjectionMatrix * float4(pos, 0.0f, 1.0f);
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/* Align to pixel grid if the viewport size is known. */
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if (ViewportSize.x > 0) {
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float2 scale = ViewportSize * 0.5f;
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float2 px_pos = (gl_Position.xy + 1) * scale;
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float2 adj_pos = round(px_pos - 0.5f) + 0.5f;
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gl_Position.xy = adj_pos / scale - 1;
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}
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/* Pass through parameters. */
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finalColor = color;
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finalOutlineColor = outlineColor;
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finalFlags = flags;
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if (!test(GPU_KEYFRAME_SHAPE_DIAMOND | GPU_KEYFRAME_SHAPE_CIRCLE |
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GPU_KEYFRAME_SHAPE_CLIPPED_VERTICAL | GPU_KEYFRAME_SHAPE_CLIPPED_HORIZONTAL))
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{
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finalFlags |= GPU_KEYFRAME_SHAPE_DIAMOND;
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}
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/* Size-dependent line thickness. */
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float half_width = (0.06f + (size - 10) * 0.04f);
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float line_width = half_width + line_falloff;
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/* Outline thresholds. */
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thresholds.xy = line_thresholds(line_width * outline_scale);
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/* Inner dot thresholds. */
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thresholds.zw = line_thresholds(line_width * 1.6f);
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/* Extend the primitive size by half line width on either side; odd for symmetry. */
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float ext_radius = round(0.5f * size) + thresholds.x;
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gl_PointSize = ceil(ext_radius + thresholds.y) * 2 + 1;
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/* Diamond radius. */
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radii[0] = ext_radius * diagonal_scale;
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/* Circle radius. */
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radii[1] = ext_radius * circle_scale;
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/* Square radius. */
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radii[2] = round(ext_radius * square_scale);
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/* Min/max cutout offset. */
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radii[3] = -line_falloff;
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/* Convert to PointCoord units. */
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radii /= gl_PointSize;
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thresholds /= gl_PointSize;
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}
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