Arbeiten aus dem URlaub

ez-tree-jme/assets/Shaders/Tree.frag

@@ -0,0 +1,29 @@
+#import "Common/ShaderLib/GLSLCompat.glsllib"
+
+uniform vec4      m_Diffuse;
+uniform sampler2D m_BarkMap;
+uniform bool      m_HasBarkMap;
+
+in vec2 texCoord;
+in vec3 worldNormal;
+
+void main() {
+    vec3 n = normalize(worldNormal);
+
+    // Sun at ~45° elevation from SE — good contrast on vertical cylinders
+    vec3 sunDir  = normalize(vec3(0.6, 0.7, 0.4));
+    vec3 fillDir = normalize(vec3(-0.5, 0.3, -0.4));
+    vec3 rimDir  = normalize(vec3(-0.3, 0.5,  0.7));
+
+    float sun  = max(dot(n, sunDir),  0.0);
+    float fill = max(dot(n, fillDir), 0.0) * 0.22;
+    float rim  = max(dot(n, rimDir),  0.0) * 0.14;
+    float sky  = dot(n, vec3(0.0, 1.0, 0.0)) * 0.4 + 0.4;  // [0.0, 0.8]
+    float light = sun * 0.75 + fill + rim + sky * 0.09 + 0.05;
+
+    vec3 baseColor = m_HasBarkMap
+        ? texture2D(m_BarkMap, texCoord).rgb * m_Diffuse.rgb
+        : m_Diffuse.rgb;
+
+    gl_FragColor = vec4(baseColor * clamp(light, 0.0, 1.0), m_Diffuse.a);
+}