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[example] cel-shading and outline using inverted hull (#5615)

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* added cel-shading and outline using inverted hull example

* new screenshot

* added glsl100+120 compat

* updated view

* unnecessary spacing
This commit is contained in:
Gleb A
2026-03-06 10:52:28 -05:00
committed by GitHub
parent 3e926d65a0
commit 54f630774d
14 changed files with 562 additions and 0 deletions
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48
examples/shaders/resources/shaders/glsl120/cel.vs Normal file
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#version 120
attribute vec3 vertexPosition;
attribute vec2 vertexTexCoord;
attribute vec3 vertexNormal;
attribute vec4 vertexColor;
uniform mat4 mvp;
uniform mat4 matModel;
varying vec3 fragPosition;
varying vec2 fragTexCoord;
varying vec4 fragColor;
varying vec3 fragNormal;
// inverse() and transpose() are not built-in until GLSL 1.40
mat3 inverse(mat3 m)
{
float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];
float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];
float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];
float b01 = a22*a11 - a12*a21;
float b11 = -a22*a10 + a12*a20;
float b21 = a21*a10 - a11*a20;
float det = a00*b01 + a01*b11 + a02*b21;
return mat3(b01, (-a22*a01 + a02*a21), ( a12*a01 - a02*a11),
b11, ( a22*a00 - a02*a20), (-a12*a00 + a02*a10),
b21, (-a21*a00 + a01*a20), ( a11*a00 - a01*a10)) / det;
}
mat3 transpose(mat3 m)
{
return mat3(m[0][0], m[1][0], m[2][0],
m[0][1], m[1][1], m[2][1],
m[0][2], m[1][2], m[2][2]);
}
void main()
{
fragPosition = vec3(matModel * vec4(vertexPosition, 1.0));
fragTexCoord = vertexTexCoord;
fragColor = vertexColor;
mat3 normalMatrix = transpose(inverse(mat3(matModel)));
fragNormal = normalize(normalMatrix * vertexNormal);
gl_Position = mvp * vec4(vertexPosition, 1.0);
}