fix particles normals

src/graphics/render/MainBatch.cpp

@@ -94,39 +94,39 @@ void MainBatch::cube(
     const glm::vec3 Z(0.0f, 0.0f, 1.0f);
 
     quad(
-            coord + Z * size.z * 0.5f,
+        coord + Z * size.z * 0.5f,
-            X, Y, glm::vec2(size.x, size.y),
+        X, Y, Z, glm::vec2(size.x, size.y),
-            (shading ? do_tint(0.8) * tint : tint),
+        (shading ? do_tint(0.8) * tint : tint),
-            glm::vec3(1.0f), texfaces[5]
+        glm::vec3(1.0f), texfaces[5]
     );
     quad(
-            coord - Z * size.z * 0.5f,
+        coord - Z * size.z * 0.5f,
-            -X, Y, glm::vec2(size.x, size.y),
+        -X, Y, -Z, glm::vec2(size.x, size.y),
-            (shading ? do_tint(0.9f) * tint : tint),
+        (shading ? do_tint(0.9f) * tint : tint),
-            glm::vec3(1.0f), texfaces[4]
+        glm::vec3(1.0f), texfaces[4]
     );
     quad(
-            coord + Y * size.y * 0.5f,
+        coord + Y * size.y * 0.5f,
-            -X, Z, glm::vec2(size.x, size.z),
+        -X, Z, Y, glm::vec2(size.x, size.z),
-            (shading ? do_tint(1.0f) * tint : tint),
+        (shading ? do_tint(1.0f) * tint : tint),
-            glm::vec3(1.0f), texfaces[3]
+        glm::vec3(1.0f), texfaces[3]
     );
     quad(
-            coord - Y * size.y * 0.5f,
+        coord - Y * size.y * 0.5f,
-            X, Z, glm::vec2(size.x, size.z),
+        X, Z, -Y, glm::vec2(size.x, size.z),
-            (shading ? do_tint(0.7f) * tint : tint),
+        (shading ? do_tint(0.7f) * tint : tint),
-            glm::vec3(1.0f), texfaces[2]
+        glm::vec3(1.0f), texfaces[2]
     );
     quad(
-            coord + X * size.x * 0.5f,
+        coord + X * size.x * 0.5f,
-            -Z, Y, glm::vec2(size.z, size.y),
+        -Z, Y, X, glm::vec2(size.z, size.y),
-            (shading ? do_tint(0.8f) * tint : tint),
+        (shading ? do_tint(0.8f) * tint : tint),
-            glm::vec3(1.0f), texfaces[1]
+        glm::vec3(1.0f), texfaces[1]
     );
     quad(
-            coord - X * size.x * 0.5f,
+        coord - X * size.x * 0.5f,
-            Z, Y, glm::vec2(size.z, size.y),
+        Z, Y, -X, glm::vec2(size.z, size.y),
-            (shading ? do_tint(0.9f) * tint : tint),
+        (shading ? do_tint(0.9f) * tint : tint),
-            glm::vec3(1.0f), texfaces[1]
+        glm::vec3(1.0f), texfaces[1]
     );
 }

src/graphics/render/MainBatch.hpp

@@ -86,6 +86,7 @@ public:
         const glm::vec3& pos,
         const glm::vec3& right,
         const glm::vec3& up,
+        const glm::vec3& normal,
         const glm::vec2& size,
         const glm::vec4& light,
         const glm::vec3& tint,
@@ -97,21 +98,21 @@ public:
             {subregion.u1, subregion.v1},
             light,
             tint,
-            glm::cross(up, right)
+            normal
         );
         vertex(
             pos + right * size.x * 0.5f - up * size.y * 0.5f,
             {subregion.u2, subregion.v1},
             light,
             tint,
-            glm::cross(up, right)
+            normal
         );
         vertex(
             pos + right * size.x * 0.5f + up * size.y * 0.5f,
             {subregion.u2, subregion.v2},
             light,
             tint,
-            glm::cross(up, right)
+            normal
         );
 
         vertex(
@@ -119,21 +120,21 @@ public:
             {subregion.u1, subregion.v1},
             light,
             tint,
-            glm::cross(up, right)
+            normal
         );
         vertex(
             pos + right * size.x * 0.5f + up * size.y * 0.5f,
             {subregion.u2, subregion.v2},
             light,
             tint,
-            glm::cross(up, right)
+            normal
         );
         vertex(
             pos - right * size.x * 0.5f + up * size.y * 0.5f,
             {subregion.u1, subregion.v2},
             light,
             tint,
-            glm::cross(up, right)
+            normal
         );
     }
 

src/graphics/render/ParticlesRenderer.cpp

@@ -134,6 +134,7 @@ void ParticlesRenderer::renderParticles(const Camera& camera, float delta) {
                 particle.position,
                 localRight,
                 localUp,
+                -camera.front,
                 preset.size * scale,
                 light,
                 glm::vec3(1.0f),

src/graphics/render/PrecipitationRenderer.cpp

@@ -146,6 +146,7 @@ void PrecipitationRenderer::render(
                     pos,
                     face.right,
                     {0, 1, 0},
+                    glm::cross(glm::vec3(0, 1, 0), face.right),
                     FACE_SIZE,
                     light_at(chunks, pos.x, y, pos.z),
                     glm::vec3(1.0f),