OrcaSlicer/resources/shaders/140/gouraud.fs
Noisyfox 0cee513416
Add a simple subtle outline effect by drawing back faces using wireframe mode (#2934)
* 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`
2023-12-03 09:27:03 +08:00

117 lines
No EOL
3.4 KiB
GLSL

#version 140
const vec3 ZERO = vec3(0.0, 0.0, 0.0);
//BBS: add grey and orange
//const vec3 GREY = vec3(0.9, 0.9, 0.9);
const vec3 ORANGE = vec3(0.8, 0.4, 0.0);
const vec3 LightRed = vec3(0.78, 0.0, 0.0);
const vec3 LightBlue = vec3(0.73, 1.0, 1.0);
const float EPSILON = 0.0001;
struct PrintVolumeDetection
{
// 0 = rectangle, 1 = circle, 2 = custom, 3 = invalid
int type;
// type = 0 (rectangle):
// x = min.x, y = min.y, z = max.x, w = max.y
// type = 1 (circle):
// x = center.x, y = center.y, z = radius
vec4 xy_data;
// x = min z, y = max z
vec2 z_data;
};
struct SlopeDetection
{
bool actived;
float normal_z;
mat3 volume_world_normal_matrix;
};
uniform vec4 uniform_color;
uniform bool use_color_clip_plane;
uniform vec4 uniform_color_clip_plane_1;
uniform vec4 uniform_color_clip_plane_2;
uniform SlopeDetection slope;
//BBS: add outline_color
uniform bool is_outline;
#ifdef ENABLE_ENVIRONMENT_MAP
uniform sampler2D environment_tex;
uniform bool use_environment_tex;
#endif // ENABLE_ENVIRONMENT_MAP
uniform PrintVolumeDetection print_volume;
in vec3 clipping_planes_dots;
in float color_clip_plane_dot;
// x = diffuse, y = specular;
in vec2 intensity;
in vec4 world_pos;
in float world_normal_z;
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)))
discard;
vec4 color;
if (use_color_clip_plane) {
color.rgb = (color_clip_plane_dot < 0.0) ? uniform_color_clip_plane_1.rgb : uniform_color_clip_plane_2.rgb;
color.a = uniform_color.a;
}
else
color = uniform_color;
if (slope.actived) {
if(world_pos.z<0.1&&world_pos.z>-0.1)
{
color.rgb = LightBlue;
color.a = 0.8;
}
else if( world_normal_z < slope.normal_z - EPSILON)
{
color.rgb = color.rgb * 0.5 + LightRed * 0.5;
color.a = 0.8;
}
}
// if the fragment is outside the print volume -> use darker color
vec3 pv_check_min = ZERO;
vec3 pv_check_max = ZERO;
if (print_volume.type == 0) {
// rectangle
pv_check_min = world_pos.xyz - vec3(print_volume.xy_data.x, print_volume.xy_data.y, print_volume.z_data.x);
pv_check_max = world_pos.xyz - vec3(print_volume.xy_data.z, print_volume.xy_data.w, print_volume.z_data.y);
}
else if (print_volume.type == 1) {
// circle
float delta_radius = print_volume.xy_data.z - distance(world_pos.xy, print_volume.xy_data.xy);
pv_check_min = vec3(delta_radius, 0.0, world_pos.z - print_volume.z_data.x);
pv_check_max = vec3(0.0, 0.0, world_pos.z - print_volume.z_data.y);
}
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
else if (is_outline)
out_color = uniform_color;
#ifdef ENABLE_ENVIRONMENT_MAP
else if (use_environment_tex)
out_color = vec4(0.45 * texture(environment_tex, normalize(eye_normal).xy * 0.5 + 0.5).xyz + 0.8 * color.rgb * intensity.x, color.a);
#endif
else
out_color = vec4(vec3(intensity.y) + color.rgb * intensity.x, color.a);
}