Fix Render discard issue [pd-3ds]

- Clip Rects do now not discard when they move out of screen (cause the maths ends in < 0 which is not working with u32)
- Fixing ui7 crash wehn im input was nullptr

backends/3ds/source/bknd-gfx.cpp

@@ -180,8 +180,10 @@ void GfxC3D::RenderDrawData(const PD::Li::CmdPool& Commands) {
     if (ScissorEnabled) {
       // Figure out this setup was pain
       C3D_SetScissor(GPU_SCISSOR_NORMAL,
-                     ViewPort.y - (ScissorRect.y + ScissorRect.w),
-                     ViewPort.x - (ScissorRect.x + ScissorRect.z),
+                     std::clamp(ViewPort.y - (ScissorRect.y + ScissorRect.w), 0,
+                                ViewPort.y),
+                     std::clamp(ViewPort.x - (ScissorRect.x + ScissorRect.z), 0,
+                                ViewPort.x),
                      ViewPort.y - ScissorRect.y, ViewPort.x - ScissorRect.x);
     } else {
       C3D_SetScissor(GPU_SCISSOR_DISABLE, 0, 0, 0, 0);

include/pd/core/strings.hpp

@@ -153,7 +153,7 @@ class U8Iterator {
   }
 
   bool PeekNext32(u32& ret) {
-    if (ptr + 1 == nullptr || *ptr + 1 == 0) return false;
+    // if ((ptr + 1) == 0 || *(ptr + 1) == 0) return false;
     u8 c = *ptr;
     if (c < 0x80) {
       ret = c;

include/pd/ui7/container/image.hpp

@@ -38,6 +38,7 @@ class PD_API Image : public Container {
    * @param size Custom Size of the Image
    */
   Image(Li::Texture::Ref img, fvec2 size = 0.f, Li::Rect uv = fvec4(0.f)) {
+    if (!img) return;
     this->img = img;
     if (size == fvec2(0.f)) {
       size = img->GetSize();
@@ -60,7 +61,7 @@ class PD_API Image : public Container {
   void Draw() override;
 
  private:
-  Li::Texture::Ref img;  ///< Texture reference to the Image
+  Li::Texture::Ref img = nullptr;  ///< Texture reference to the Image
   fvec2 newsize = 0.f;             ///< New Size
   Li::Rect cuv;                    ///< Custom UV
 };

source/ui7/container/image.cpp

@@ -26,6 +26,7 @@ SOFTWARE.
 namespace PD {
 namespace UI7 {
 PD_API void Image::Draw() {
+  if (!img) return;
   // Assert(io.get() && list.get(), "Did you run Container::Init correctly?");
   // Assert(img.get(), "Image is nullptr!");
   // io->Ren->OnScreen(screen);