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examples: Add rounded-rect Shader

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Adapted from (https://github.com/Oncorporation/obs-shaderfilter/blob/master/data/examples/rounded_rect.shader) by @carlosbaraza.
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Carlos Baraza 2021-04-30 21:53:08 +02:00 committed by Michael Fabian 'Xaymar' Dirks
parent 2c4e001751
commit d166a26d4c
2 changed files with 110 additions and 1 deletions
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* @xaymar
/data/examples/filter/rounded-rect.effect @carlosbaraza
# Security critical owners
/.github @xaymar

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data/examples/shaders/filter/rounded-rect.effect Normal file
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// Copyright 2021 Carlos Baraza
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
// THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#define IS_FILTER
#include "../base.effect"
//------------------------------------------------------------------------------
// Uniforms
//------------------------------------------------------------------------------
uniform int _0_corner_radius<
string name = "Corner Radius";
string suffix = " px";
string field_type = "input";
int minimum = 0;
int maximum = 2000;
int step = 10;
int scale = 1;
> = 40;
uniform float4 _1_border<
string name = "Border Color";
string field_type = "slider";
float4 minimum = {0., 0., 0., 0.};
float4 maximum = {100., 100., 100., 100.};
float4 step = {0.01, 0.01, 0.01, 0.01};
float4 scale = {0.01, 0.01, 0.01, 0.01};
> = {0., 0., 0., 100.};
uniform int _2_border_thickness<
string name = "Border Thickness";
string suffix = " px";
string field_type = "input";
int minimum = 0;
int maximum = 300;
int step = 1;
int scale = 1;
> = 5;
//------------------------------------------------------------------------------
// Technique: Rounded Rect
//------------------------------------------------------------------------------
float4 RoundedRect(VertexInformation vtx) : TARGET {
float2 uv = vtx.texcoord0.xy;
int corner_radius = _0_corner_radius;
// Fold the input horizontally and vertically so all corners fall into the same quadrant
float2 mirrored_tex_coord = float2(0.5, 0.5) - abs(uv - float2(0.5, 0.5));
float4 rgb = InputA.Sample(LinearClampSampler, uv);
float2 pixel_position = float2(
mirrored_tex_coord.x * ViewSize.x,
mirrored_tex_coord.y * ViewSize.y
);
// Handle rounded corner
float pixel_distance_from_center = distance(
pixel_position,
float2(corner_radius, corner_radius)
);
bool is_in_corner = (pixel_position.x < corner_radius) && (pixel_position.y < corner_radius);
bool is_within_radius = pixel_distance_from_center <= corner_radius;
// Handle border
bool is_within_edge_border = !is_in_corner && (
(pixel_position.x <= _2_border_thickness) ||
(pixel_position.y <= _2_border_thickness)
);
bool is_within_corner_border = is_in_corner && (
(pixel_distance_from_center < corner_radius) &&
(pixel_distance_from_center > (corner_radius - _2_border_thickness))
);
if (is_within_edge_border || is_within_corner_border) {
return rgb + _1_border;
}
// Handle corners and return transparent color
if (is_in_corner && !is_within_radius) {
return float4(0,0,0,0);
}
return rgb;
}
technique RoundedRect
{
pass
{
vertex_shader = DefaultVertexShader(vtx);
pixel_shader = RoundedRect(vtx);
}
}