feat(rendering): replaced sphere with more accurate sphere mesh

asset-srcs/models/NOTE.txt

@@ -0,0 +1,9 @@
+sphere.obj was made by subdividing a cube, unwrapping it using cube projection, and then using the "To-sphere" tool in Blender to fully smoothen it out.
+Make sure you select "shade smooth" before exporting!
+
+Other settings:
+    Up axis: Y
+    Forward axis: -Z
+
+The winding order in .obj files is always counter-clockwise, so my script (genmesh.py) uses reversed() to reverse this and homogenous the winding order
+across meshes

asset-srcs/models/arc.obj

@@ -0,0 +1,565 @@
+# Blender 4.4.0
+# www.blender.org
+mtllib arc.mtl
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asset-srcs/models/arrow.obj

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asset-srcs/models/cube.obj

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asset-srcs/models/cylinder.obj

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asset-srcs/models/outline.obj

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+vt 0.437500 0.750000
+vt 0.437500 0.312500
+vt 0.437500 0.250000
+vt 0.437500 1.000000
+vt 0.437500 0.937500
+vt 0.437500 0.687500
+vt 0.437500 0.187500
+vt 0.375000 0.250000
+vt 0.375000 0.187500
+vt 0.375000 0.437500
+vt 0.375000 0.750000
+vt 0.375000 1.000000
+vt 0.375000 0.937500
+vt 0.375000 0.812500
+vt 0.375000 0.312500
+vt 0.375000 0.062500
+vt 0.375000 0.000000
+vt 0.625000 1.000000
+vt 0.875000 0.750000
+s 0
+f 18/1/1 34/2/1 42/3/1
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asset-srcs/models/wedge.obj

@@ -0,0 +1,36 @@
+# Blender 4.4.3
+# www.blender.org
+mtllib wedge.mtl
+o Cube
+v 1.000000 -1.000000 -1.000000
+v 1.000000 1.000000 1.000000
+v 1.000000 -1.000000 1.000000
+v -1.000000 -1.000000 -1.000000
+v -1.000000 1.000000 1.000000
+v -1.000000 -1.000000 1.000000
+vn -0.0000 -0.0000 1.0000
+vn -1.0000 -0.0000 -0.0000
+vn -0.0000 -1.0000 -0.0000
+vn 1.0000 -0.0000 -0.0000
+vn -0.0000 0.7071 -0.7071
+vt 0.625000 0.750000
+vt 0.375000 1.000000
+vt 0.375000 0.750000
+vt 0.375000 0.000000
+vt 0.625000 0.000000
+vt 0.375000 0.250000
+vt 0.375000 0.500000
+vt 0.125000 0.750000
+vt 0.125000 0.500000
+vt 0.875000 0.750000
+vt 0.625000 1.000000
+s 0
+usemtl Material
+f 2/1/1 6/2/1 3/3/1
+f 6/4/2 5/5/2 4/6/2
+f 1/7/3 6/8/3 4/9/3
+f 1/7/4 2/1/4 3/3/4
+f 5/10/5 1/7/5 4/6/5
+f 2/1/1 5/11/1 6/2/1
+f 1/7/3 3/3/3 6/8/3
+f 5/10/5 2/1/5 1/7/5

assets/shaders/phong.vs

@@ -9,6 +9,7 @@ const int FaceBack = 2;
 const int FaceLeft = 3;	
 const int FaceBottom = 4;
 const int FaceFront	= 5;
+const int FaceNone	= 6;
 
 const int SurfaceSmooth = 0;
 const int SurfaceGlue = 1;
@@ -31,6 +32,8 @@ uniform mat4 projection;
 uniform int surfaces[6];
 uniform vec3 texScale;
 
+const float faceThreshold = sqrt(2)/2;
+
 void main()
 {
     gl_Position = projection * view * model * vec4(aPos, 1.0);
@@ -38,12 +41,20 @@ void main()
     lPos = aPos;
     vNormal = normalMatrix * aNormal;
     lNormal = aNormal;
-    int vFace = aNormal == vec3(0,1,0) ? FaceTop :
-            aNormal == vec3(0, -1, 0) ? FaceBottom :
-            aNormal == vec3(1, 0, 0) ? FaceRight :
-            aNormal == vec3(-1, 0, 0) ? FaceLeft :
-            aNormal == vec3(0, 0, -1) ? FaceFront :
-            aNormal == vec3(0, 0, 1) ? FaceBack : -1;
+    int vFace = FaceNone;
+
+    if (dot(vec3(0, 1, 0), aNormal) > faceThreshold)
+        vFace = FaceTop;
+    else if (dot(vec3(0, -1, 0), aNormal) > faceThreshold)
+        vFace = FaceBottom;
+    else if (dot(vec3(1, 0, 0), aNormal) > faceThreshold)
+        vFace = FaceRight;
+    else if (dot(vec3(-1, 0, 0), aNormal) > faceThreshold)
+        vFace = FaceLeft;
+    else if (dot(vec3(0, 0, -1), aNormal) > faceThreshold)
+        vFace = FaceFront;
+    else if (dot(vec3(0, 0, 1), aNormal) > faceThreshold)
+        vFace = FaceBack;
 
     vSurfaceZ = surfaces[vFace];
     if (surfaces[vFace] > SurfaceUniversal) vSurfaceZ = 0;

core/src/rendering/renderer.cpp

@@ -78,6 +78,7 @@ void renderInit(int width, int height) {
     glEnable(GL_DEPTH_TEST);
     glEnable(GL_BLEND);
     glEnable(GL_MULTISAMPLE);
+    glFrontFace(GL_CW);
     glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
     // glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 
@@ -147,11 +148,9 @@ static void renderPart(std::shared_ptr<BasePart> part) {
 
     PartType shape = part->IsA<Part>() ? part->CastTo<Part>().expect()->shape : PartType::Block;
     if (part->IsA<WedgePart>()) {
-        glFrontFace(GL_CCW);
         WEDGE_MESH->bind();
         glDrawArrays(GL_TRIANGLES, 0, WEDGE_MESH->vertexCount);
     } else if (shape == PartType::Ball) { // Part
-        glFrontFace(GL_CCW);
         SPHERE_MESH->bind();
         glDrawArrays(GL_TRIANGLES, 0, SPHERE_MESH->vertexCount);
     } else if (shape == PartType::Block) {
@@ -226,7 +225,6 @@ void renderSurfaceExtras() {
     glDepthMask(GL_TRUE);
     glEnable(GL_CULL_FACE);
     glCullFace(GL_BACK);
-    glFrontFace(GL_CCW);
     glEnable(GL_BLEND);
     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 
@@ -267,7 +265,6 @@ void renderSurfaceExtras() {
 void renderSkyBox() {
     glDepthMask(GL_FALSE);
     glCullFace(GL_FRONT);
-    glFrontFace(GL_CW);
 
     skyboxShader->use();
 
@@ -294,7 +291,6 @@ void renderHandles() {
 
     glDepthMask(GL_TRUE);
     glCullFace(GL_BACK);
-    glFrontFace(GL_CCW); // This is right... Probably.....
     
     // Use shader
     handleShader->use();
@@ -432,7 +428,6 @@ void renderOutlines() {
     glDepthMask(GL_TRUE);
     glEnable(GL_CULL_FACE);
     glCullFace(GL_BACK);
-    glFrontFace(GL_CCW);
     glEnable(GL_BLEND);
     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 
@@ -496,7 +491,6 @@ void renderSelectionAssembly() {
     glDepthMask(GL_TRUE);
     glEnable(GL_CULL_FACE);
     glCullFace(GL_BACK);
-    glFrontFace(GL_CCW);
     glEnable(GL_BLEND);
     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 
@@ -584,7 +578,6 @@ std::vector<std::pair<CFrame, Color3>> DEBUG_CFRAMES;
 void renderDebugCFrames() {
     glDepthMask(GL_TRUE);
     glCullFace(GL_BACK);
-    glFrontFace(GL_CCW); // This is right... Probably.....
     
     // Use shader
     handleShader->use();

tools/genmesh.py

@@ -58,7 +58,7 @@ for line in file:
 
     if line.startswith('f '):
         verts = line.split(' ')[1:]
-        for vert in verts:
+        for vert in reversed(verts):
             coords, uv, normal = vert.split('/')
             coords, uv, normal = int(coords), int(uv), int(normal)
             coords, uv, normal = vert_coords[coords-1], vert_uvs[uv-1], vert_norms[normal-1]