juli/OrcaSlicer
1
1
Fork 0
mirror of https://github.com/OrcaSlicer/OrcaSlicer.git synced 2026-07-31 14:52:06 +00:00
Code Issues Packages Projects Releases Wiki Activity

Interactive shadows (#14702)

Browse Source 
Co-authored-by: Ian Bassi <12130714+ianalexis@users.noreply.github.com>
Co-authored-by: Ian Bassi <ian.bassi@outlook.com>
This commit is contained in:
Rodrigo Faselli
2026-07-12 21:44:30 -03:00
committed by GitHub
parent b1e64dc69c
commit 78692aa08f
12 changed files with 544 additions and 144 deletions
Download Patch File Download Diff File Expand all files Collapse all files

47
resources/shaders/140/phong.fs
View File

@@ -65,6 +65,12 @@ uniform float z_far;
uniform float z_near;
uniform bool enable_ssao;
// Depth-based shadow map (object-on-object and self shadows). shadow_intensity == 0 disables it.
uniform sampler2D shadow_map;
uniform mat4 shadow_light_vp;
uniform float shadow_intensity;
uniform float shadow_map_texel;
in vec3 clipping_planes_dots;
in float color_clip_plane_dot;
@@ -170,11 +176,40 @@ vec3 compute_window_reflection(vec3 normal, vec3 view_dir)
float intensity = window_light * bars * (0.15 + 0.15 * fresnel) * facing;
intensity = clamp(intensity, 0.0, 0.25);
intensity = clamp(intensity, 0.0, 0.25);
return vec3(intensity);
}
// Returns a lighting multiplier in [1 - shadow_intensity, 1]: < 1 where the fragment is
// occluded from the light in the shadow map. 3x3 PCF softens the edges.
float shadow_shade()
{
if (shadow_intensity <= 0.0)
return 1.0;
vec4 lp = shadow_light_vp * world_pos;
vec3 proj = lp.xyz / lp.w;
proj = proj * 0.5 + 0.5;
if (proj.z > 1.0)
return 1.0;
// Slope-scaled depth bias: larger where the surface grazes / faces away from the light. This
// suppresses self-shadow acne without discarding real shadows cast by other objects onto
// back-facing surfaces (e.g. the shaded back/tip of a cone sitting inside a larger shadow).
float NdotL = dot(normalize(eye_normal), LIGHT_TOP_DIR);
float bias = mix(0.0004, 0.004, clamp(1.0 - NdotL, 0.0, 1.0));
// 5x5 PCF: softens shadow edges into a smooth penumbra and blurs residual facet acne.
float sum = 0.0;
for (int x = -2; x <= 2; ++x) {
for (int y = -2; y <= 2; ++y) {
float closest = texture(shadow_map, proj.xy + vec2(float(x), float(y)) * shadow_map_texel).r;
sum += (proj.z - bias > closest) ? 1.0 : 0.0;
}
}
return 1.0 - shadow_intensity * (sum / 25.0);
}
void main()
{
if (any(lessThan(clipping_planes_dots, ZERO)))
@@ -230,8 +265,10 @@ void main()
// SSAO is applied in post-process pass. Keep base lighting unchanged here.
float shade = shadow_shade();
if (is_outline) {
vec3 shaded_rgb = (vec3(specular) + window_reflection + color.rgb * diffuse) * PHONG_BRIGHTNESS;
vec3 shaded_rgb = (vec3(specular) + window_reflection + color.rgb * diffuse) * PHONG_BRIGHTNESS * shade;
vec4 shaded_color = vec4(clamp(shaded_rgb, vec3(0.0), vec3(1.0)), color.a);
vec2 fragCoord = gl_FragCoord.xy;
float s = DetectSilho(fragCoord);
@@ -244,8 +281,8 @@ void main()
}
#ifdef ENABLE_ENVIRONMENT_MAP
else if (use_environment_tex)
out_color = vec4(clamp((0.45 * texture(environment_tex, normalize(eye_normal).xy * 0.5 + 0.5).xyz + window_reflection + 0.8 * color.rgb * diffuse) * PHONG_BRIGHTNESS, vec3(0.0), vec3(1.0)), color.a);
out_color = vec4(clamp((0.45 * texture(environment_tex, normalize(eye_normal).xy * 0.5 + 0.5).xyz + window_reflection + 0.8 * color.rgb * diffuse) * PHONG_BRIGHTNESS * shade, vec3(0.0), vec3(1.0)), color.a);
#endif
else
out_color = vec4(clamp((vec3(specular) + window_reflection + color.rgb * diffuse) * PHONG_BRIGHTNESS, vec3(0.0), vec3(1.0)), color.a);
out_color = vec4(clamp((vec3(specular) + window_reflection + color.rgb * diffuse) * PHONG_BRIGHTNESS * shade, vec3(0.0), vec3(1.0)), color.a);
}