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Add a simple subtle outline effect by drawing back faces using wireframe mode (#2934)

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* Add a simple subtle outline effect by drawing back faces using wireframe mode

* Show outline in white if the model color is too dark

* Make the outline algorithm more reliable

* Enable cull face, which fix render on Linux

* Fix `disable_cullface`
This commit is contained in:
Noisyfox 2023-12-03 09:27:03 +08:00 • committed by GitHub
parent 2745575dd2
commit 0cee513416
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GPG key ID: 4AEE18F83AFDEB23
4 changed files with 46 additions and 8 deletions
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10
resources/shaders/110/gouraud.fs
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@ -54,6 +54,11 @@ varying vec4 world_pos;
varying float world_normal_z;
varying vec3 eye_normal;
vec3 getBackfaceColor(vec3 fill) {
float brightness = 0.2126 * fill.r + 0.7152 * fill.g + 0.0722 * fill.b;
return (brightness > 0.75) ? vec3(0.11, 0.165, 0.208) : vec3(0.988, 0.988, 0.988);
}
void main()
{
if (any(lessThan(clipping_planes_dots, ZERO)))
@ -95,8 +100,11 @@ void main()
}
color.rgb = (any(lessThan(pv_check_min, ZERO)) || any(greaterThan(pv_check_max, ZERO))) ? mix(color.rgb, ZERO, 0.3333) : color.rgb;
// Orca: add backface outline
if (!gl_FrontFacing)
gl_FragColor = vec4(getBackfaceColor(color.rgb), 1.0);
//BBS: add outline_color
if (is_outline)
else if (is_outline)
gl_FragColor = uniform_color;
#ifdef ENABLE_ENVIRONMENT_MAP
else if (use_environment_tex)

10
resources/shaders/140/gouraud.fs
View file

@ -56,6 +56,11 @@ in vec3 eye_normal;
out vec4 out_color;
vec3 getBackfaceColor(vec3 fill) {
float brightness = 0.2126 * fill.r + 0.7152 * fill.g + 0.0722 * fill.b;
return (brightness > 0.75) ? vec3(0.11, 0.165, 0.208) : vec3(0.988, 0.988, 0.988);
}
void main()
{
if (any(lessThan(clipping_planes_dots, ZERO)))
@ -97,8 +102,11 @@ void main()
}
color.rgb = (any(lessThan(pv_check_min, ZERO)) || any(greaterThan(pv_check_max, ZERO))) ? mix(color.rgb, ZERO, 0.3333) : color.rgb;
// Orca: add backface outline
if (!gl_FrontFacing)
out_color = vec4(getBackfaceColor(color.rgb), 1.0);
//BBS: add outline_color
if (is_outline)
else if (is_outline)
out_color = uniform_color;
#ifdef ENABLE_ENVIRONMENT_MAP
else if (use_environment_tex)