some things work, others dont

res/shaders/FullScreenQuad.slang

@@ -9,6 +9,8 @@ QuadOutput quadMain(uint vertexIndex : SV_VertexID)
 {
     QuadOutput result;
     result.uv = float2(vertexIndex & 2, (vertexIndex << 1) & 2);
-	result.position = float4(result.uv * 2.0f + -1.0f, 0.0f, 1.0f);
+    float2 ndc = result.uv * 2.0f + -1.0f;
+    ndc.y = -ndc.y; // Flip Y for flipped viewport
+	result.position = float4(ndc, 0.0f, 1.0f);
 	return result;
 }

src/Engine/Graphics/RenderPass/ShadowPass.cpp

@@ -76,8 +76,8 @@ void ShadowPass::beginFrame(const Component::Camera& camera, const Component::Tr
         float splitDist = cascadeSplits[i];
 
         Array<Vector> frustumCorners = {
-            Vector(-1.0f, 1.0f, 0.0f), Vector(1.0f, 1.0f, 0.0f), Vector(1.0f, -1.0f, 0.0f), Vector(-1.0f, -1.0f, 0.0f),
             Vector(-1.0f, 1.0f, 1.0f), Vector(1.0f, 1.0f, 1.0f), Vector(1.0f, -1.0f, 1.0f), Vector(-1.0f, -1.0f, 1.0f),
+            Vector(-1.0f, 1.0f, 0.0f), Vector(1.0f, 1.0f, 0.0f), Vector(1.0f, -1.0f, 0.0f), Vector(-1.0f, -1.0f, 0.0f),
         };
 
         for (auto& c : frustumCorners) {

src/Engine/Graphics/Vulkan/Window.cpp

@@ -292,10 +292,10 @@ void Window::createSwapChain() {
 }
 
 Viewport::Viewport(PWindow owner, const ViewportCreateInfo& viewportInfo) : Gfx::Viewport(owner, viewportInfo) {
-    handle.width = static_cast<float>(sizeX);
-    handle.height = static_cast<float>(sizeY);
     handle.x = static_cast<float>(offsetX);
-    handle.y = static_cast<float>(offsetY);
+    handle.y = static_cast<float>(offsetY + sizeY);
+    handle.width = static_cast<float>(sizeX);
+    handle.height = -static_cast<float>(sizeY);
     handle.minDepth = 1.f;
     handle.maxDepth = 0.f;
 }
@@ -306,12 +306,12 @@ void Viewport::resize(uint32 newX, uint32 newY) {
     sizeX = newX;
     sizeY = newY;
     handle.width = static_cast<float>(sizeX);
-    handle.height = static_cast<float>(sizeY);
+    handle.height = -static_cast<float>(sizeY);
 }
 
 void Viewport::move(uint32 newOffsetX, uint32 newOffsetY) {
     offsetX = newOffsetX;
     offsetY = newOffsetY;
     handle.x = static_cast<float>(offsetX);
-    handle.y = static_cast<float>(offsetY);
+    handle.y = static_cast<float>(offsetY + sizeY);
 }

src/Engine/Math/Matrix.cpp

@@ -12,7 +12,7 @@ Matrix4 Seele::perspectiveProjection(float fov, float aspect, float nearPlane, f
         },
         {
             0.0f,
-            -e,
+            e,
             0.0f,
             0.0f,
         },

src/Engine/Math/Transform.cpp

@@ -52,7 +52,7 @@ void Transform::setScale(Vector s) { scale = Vector4(s, 0); }
 
 Vector Transform::getForward() const { return glm::normalize(Vector(0, 0, 1) * rotation); }
 
-Vector Transform::getRight() const { return glm::normalize(Vector(-1, 0, 0) * rotation); }
+Vector Transform::getRight() const { return glm::normalize(Vector(1, 0, 0) * rotation); }
 
 Vector Transform::getUp() const { return glm::normalize(Vector(0, 1, 0) * rotation); }