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Update/merge examples back into main repo (#192)

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Chris Dill
2023-08-25 08:08:32 +01:00
committed by GitHub
parent fa682b00ac
commit bcdf8cec5b
320 changed files with 57965 additions and 1 deletions
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Examples/resources/shaders/glsl100/outline.fs Normal file
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#version 100
precision mediump float;
// Input vertex attributes (from vertex shader)
varying vec2 fragTexCoord;
varying vec4 fragColor;
// Input uniform values
uniform sampler2D texture0;
uniform vec4 colDiffuse;
uniform vec2 textureSize;
uniform float outlineSize;
uniform vec4 outlineColor;
void main()
{
vec4 texel = texture2D(texture0, fragTexCoord); // Get texel color
vec2 texelScale = vec2(0.0);
texelScale.x = outlineSize/textureSize.x;
texelScale.y = outlineSize/textureSize.y;
// We sample four corner texels, but only for the alpha channel (this is for the outline)
vec4 corners = vec4(0.0);
corners.x = texture2D(texture0, fragTexCoord + vec2(texelScale.x, texelScale.y)).a;
corners.y = texture2D(texture0, fragTexCoord + vec2(texelScale.x, -texelScale.y)).a;
corners.z = texture2D(texture0, fragTexCoord + vec2(-texelScale.x, texelScale.y)).a;
corners.w = texture2D(texture0, fragTexCoord + vec2(-texelScale.x, -texelScale.y)).a;
float outline = min(dot(corners, vec4(1.0)), 1.0);
vec4 color = mix(vec4(0.0), outlineColor, outline);
gl_FragColor = mix(color, texel, texel.a);
}