Ajout du projet Depths sur Git

2026-04-30 12:24:52 +02:00
commit a143ea22c7
6651 changed files with 77423 additions and 0 deletions
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+<?xml version="1.0"?>
+<materialx version="1.38">
+
+  <!-- <point_light> -->
+  <implementation name="IM_point_light_genmsl" nodedef="ND_point_light" file="mx_point_light.metal" function="mx_point_light" target="genmsl" />
+
+  <!-- <directional_light> -->
+  <implementation name="IM_directional_light_genmsl" nodedef="ND_directional_light" file="mx_directional_light.metal" function="mx_directional_light" target="genmsl" />
+
+  <!-- <spot_light> -->
+  <implementation name="IM_spot_light_genmsl" nodedef="ND_spot_light" file="mx_spot_light.metal" function="mx_spot_light" target="genmsl" />
+
+</materialx>
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+void mx_directional_light(LightData light, float3 position, thread lightshader& result)
+{
+    result.direction = -light.direction;
+    result.intensity = light.color * light.intensity;
+}
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+void mx_point_light(LightData light, float3 position, thread lightshader& result)
+{
+    result.direction = light.position - position;
+    float distance = length(result.direction) + M_FLOAT_EPS;
+    float attenuation = pow(distance + 1.0, light.decay_rate + M_FLOAT_EPS);
+    result.intensity = light.color * light.intensity / attenuation;
+    result.direction /= distance;
+}
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+void mx_spot_light(LightData light, float3 position, thread lightshader& result)
+{
+    result.direction = light.position - position;
+    float distance = length(result.direction) + M_FLOAT_EPS;
+    float attenuation = pow(distance + 1.0, light.decay_rate + M_FLOAT_EPS);
+    result.intensity = light.color * light.intensity / attenuation;
+    result.direction /= distance;
+    float low = min(light.inner_angle, light.outer_angle);
+    float high = light.inner_angle;
+    float cosDir = dot(result.direction, -light.direction);
+    float spotAttenuation = smoothstep(low, high, cosDir);
+    result.intensity *= spotAttenuation;
+}