refactoring

resources/shaders/planet_stone.vertex

@@ -0,0 +1,36 @@
+attribute vec3 vPosition;
+attribute vec2 vTexCoord;
+attribute vec3 vNormal;
+attribute vec3 vTangent;
+attribute vec3 vBinormal;
+attribute vec3 vColor;
+
+varying vec2 TexCoord;
+varying vec3 Color;
+varying vec3 vViewDirTangent;
+varying vec3 worldPosition;
+varying vec3 vWorldNormal;
+
+uniform mat4 ProjectionModelViewMatrix;
+uniform mat4 ModelViewMatrix;
+
+uniform highp vec3 uViewPos;
+
+void main() {
+    vWorldNormal = vNormal;
+    gl_Position = ProjectionModelViewMatrix * vec4(vPosition, 1.0);
+    TexCoord = vTexCoord;
+
+    vec3 viewDirWorld = normalize(uViewPos - vPosition);
+
+    // Строим матрицу перехода из атрибутов
+    // Так как базис ортонормирован, TBN^-1 == TBN_transpose
+    vViewDirTangent = vec3(
+        dot(viewDirWorld, vTangent),
+        dot(viewDirWorld, vBinormal),
+        dot(viewDirWorld, vNormal)
+    );
+	vec4 viewPosition = ModelViewMatrix * vec4(vPosition.xyz, 1.0);
+	
+	worldPosition = vPosition;
+}