Update: Added 2 gl funcs to webgl, rotation for vector, improved handling of opengl shaders

Author: MrcSnm

build/wasm/build/webgl.js

@@ -147,6 +147,12 @@ function initializeWebglContext()
         glEnable ( cap ) {
             gl.enable(cap);
         },
+        glFrontFace( face ) {
+            gl.frontFace(face);
+        },
+        glCullFace( cull ) {
+            gl.cullFace(cull);
+        },
         glDisable ( cap )
         {
             gl.disable(cap);

modules/math/source/hip/math/matrix.d

@@ -296,6 +296,21 @@ struct Matrix4
             (left+right)/(left-right), (top+bottom)/(bottom-top), -znear/(znear-zfar), 1
         ]);
     }
+    static Matrix4 perspective(float fovInRadians, uint width, uint height, float znear, float zfar)
+    {
+        import hip.math.utils;
+        float aspect = cast(float)width / cast(float)height;
+        float fovRatio = 1.0 / tan(fovInRadians/2);
+        float rangeInv = 1.0 / cast(float)(zfar - znear);
+
+        return Matrix4([
+            aspect * fovRatio, 0, 0, 0,
+            0, fovRatio, 0, 0,
+            0, 0, (znear + zfar) * rangeInv, 1,
+            0, 0, -znear*zfar*rangeInv, 0
+        ]);
+
+    }
 
     static Matrix4 alternateHandedness(Matrix4 mat)
     {

modules/math/source/hip/math/utils.d

@@ -3,6 +3,7 @@ import hip.math.vector;
 
 ///There are some errors occurring when compiling with LDC
 public import core.math: sqrt, cos, sin;
+public import core.stdc.math:tan;
 
 pure @safe nothrow @nogc:
 

modules/math/source/hip/math/vector.d

@@ -227,7 +227,18 @@ struct Vector(uint N, T)
                 static if(N == 3)
                     return VectorN(x*c - y*s, y*c + s*x, z);
                 else
-                    return Vector!(N, T)(x*c - y*s, y*c + s*x, z, w);
+                    return VectorN(x*c - y*s, y*c + s*x, z, w);
+            }
+
+            VectorN rotateXZ(float radians)
+            {
+                const float c = cos(radians);
+                const float s = sin(radians);
+
+                static if(N == 3)
+                    return VectorN(x*c - z*s, y, z*c + s*x);
+                else
+                    return VectorN(x*c - z*s, y, z*c + s*x, w);
             }
         }