remove the 3ds ifdefs out of the core mat lib

need to find a way to handle mtx stuff in the gfx driver or another way

include/pd/core/mat.hpp

@@ -56,21 +56,9 @@ struct PD_API Mat4 {
   constexpr float* Ptr() { return m.data(); }
   constexpr const float* Ptr() const { return m.data(); }
 
-  constexpr float& operator()(int row, int col) {
-#ifdef __3DS__
-    // 3ds is full reverse order iirc
-    return m[row * 4 + (3 - col)];
-#else
-    return m[col * 4 + row];
-#endif
-  }
+  constexpr float& operator()(int row, int col) { return m[col * 4 + row]; }
   constexpr float operator()(int row, int col) const {
-#ifdef __3DS__
-    // 3ds is full reverse order iirc
-    return m[row * 4 + (3 - col)];
-#else
     return m[col * 4 + row];
-#endif
   }
 
   constexpr Mat4 operator*(const Mat4& v) const {
@@ -122,21 +110,12 @@ struct PD_API Mat4 {
   constexpr static Mat4 Ortho(float l, float r, float b, float t, float n,
                               float f) {
     Mat4 ret;
-#ifdef __3DS__  // Patch to rotate the Matrix correctly
-    ret(0, 1) = 2.f / (t - b);
-    ret(0, 3) = (b + t) / (b - t);
-    ret(1, 0) = 2.f / (l - r);
-    ret(1, 3) = (l + r) / (r - l);
-    ret(2, 2) = 1.f / (n - f);
-    ret(2, 3) = 0.5f * (n + f) / (n - f) - 0.5f;
-#else
     ret(0, 0) = 2.0f / (r - l);
     ret(0, 3) = -(r + l) / (r - l);
     ret(1, 1) = 2.0f / (t - b);
     ret(1, 3) = -(t + b) / (t - b);
     ret(2, 2) = -2.0f / (f - n);
     ret(2, 3) = -(f + n) / (f - n);
-#endif
     ret(3, 3) = 1.f;
     return ret;
   }

source/core/mat.cpp

@@ -85,13 +85,8 @@ PD_API Mat4 Mat4::Perspective(float fov, float aspect, float n, float f) {
   Mat4 ret;
   ret(0, 0) = 1.f / (aspect * _fov);
   ret(1, 1) = 1.f / _fov;
-#ifdef __3DS__
-  ret(2, 3) = f * n / (n - f);
-  ret(2, 2) = -(-1.f) * n / (n - f);
-#else
   ret(2, 2) = -(f + n) / (f - n);
   ret(2, 3) = -(2.f * f * n) / (f - n);
-#endif
   ret(3, 2) = -1.f;
   ret(3, 3) = 0.0f;
   return ret;

tests/gfx/include/os-ctx.hpp

@@ -21,6 +21,8 @@ class OsCtx {
   virtual bool Mainloop() { return false; }
   virtual void ClearViewPort() {}
   virtual void SwapBuffers() {}
+  virtual int GetScreenCount() { return 1; }
+  virtual void DrawOnScreen(int s = 0) {}
   PD::fvec2 PositionTranslate(PD::fvec2 in) {
     return fvec2(in.x * pViewPort.x, in.y * pViewPort.y);
   }

tests/gfx/include/os/horizon-ctr.hpp

@@ -13,6 +13,8 @@ class HorizonCtr : public PD::OsCtx {
   bool Mainloop() override;
   void ClearViewPort() override;
   void SwapBuffers() override;
+  int GetScreenCount() override { return 2; }
+  void DrawOnScreen(int s) override;
 
  private:
   struct Impl;

tests/gfx/source/main.cpp

@@ -208,11 +208,17 @@ int main(int argc, char** argv) {
   RightStick.pColor = "#00ffff";
   PD::UI7::Context ui7;
   ui7.GetIO().Font = &font;
+#ifdef __3DS__
+  ui7.AddViewPort("Default", PD::ivec4(0, 0, 320, 240));
+  ui7.GetIO().FontScale = 0.5f;
+#else
   ui7.AddViewPort("Default", PD::ivec4(0, 0, 1280, 720));
+#endif
   ui7.UseViewPort("Default");
   bool pMetricsWin = true;
   while (pOs->Mainloop()) {
     PD::TT::End("OSCTX::MainLoop");
+    pOs->DrawOnScreen(0);
     pOs->ClearViewPort();
     PD::TT::Scope __st("MainLoop");
     PD::TT::Beg("MainRaw");
@@ -324,7 +330,10 @@ int main(int argc, char** argv) {
     PD::TT::End("UI7::Context::Update");
     PD::Gfx::Reset();
     PD::TT::Beg("PD::Gfx::Draw");
+    pOs->DrawOnScreen(1);
+    pOs->ClearViewPort();
     PD::Gfx::Draw(ui7.GetDrawData());
+    pOs->DrawOnScreen(0);
     PD::Gfx::Draw(pList);
     PD::TT::End("PD::Gfx::Draw");
     pList.Clear();

tests/gfx/source/os/horizon-ctr.cpp

@@ -16,6 +16,7 @@ struct HorizonCtr::Impl {
   C3D_RenderTarget* Top = nullptr;
   C3D_RenderTarget* Bottom = nullptr;
   uint32_t* pSocBuf = nullptr;
+  int CurrentScreen = 0;
 };
 
 void HorizonCtr::Init() {
@@ -63,13 +64,25 @@ bool HorizonCtr::Mainloop() {
   pViewPort = ivec2(400, 240);
   bool _kill = hidKeysUp() & KEY_START;
   C3D_FrameBegin(C3D_FRAME_SYNCDRAW);
+  impl->CurrentScreen = 0;
   return aptMainLoop() && !_kill;
 }
 
 void HorizonCtr::ClearViewPort() {
-  PD::Gfx::SetViewPort(pViewPort);
+  C3D_RenderTargetClear(impl->CurrentScreen ? impl->Bottom : impl->Top,
+                        C3D_CLEAR_ALL, PD::Color(25, 25, 25, 25), 0);
+}
+
+void HorizonCtr::DrawOnScreen(int s) {
+  impl->CurrentScreen = s;
+  if (s == 0) {
     C3D_FrameDrawOn(impl->Top);
-  C3D_RenderTargetClear(impl->Top, C3D_CLEAR_ALL, PD::Color(25, 25, 25, 25), 0);
+    pViewPort = PD::ivec2(400, 240);
+  } else if (s == 1) {
+    C3D_FrameDrawOn(impl->Bottom);
+    pViewPort = PD::ivec2(320, 240);
+  }
+  PD::Gfx::SetViewPort(pViewPort);
 }
 
 void HorizonCtr::SwapBuffers() { C3D_FrameEnd(0); }