Revert "GPU: Clamp coordinates to 11 bits after applying drawing offset"

This reverts commit 5302f83818.

This is not the correct fix, and breaks other games.

src/core/gpu.h

@@ -251,15 +251,10 @@ protected:
   {
     u32 bits;
 
-    BitField<u32, s32, 0, 11> x;
-    BitField<u32, s32, 16, 11> y;
+    BitField<u32, s32, 0, 12> x;
+    BitField<u32, s32, 16, 12> y;
   };
 
-  // Vertices have to be clamped to 11 bits before rendering. Normally this would happen as part of the scanline,
-  // but in the hardware renderers we'll do it at the vertex. FF8 is a good test case here, once you go too far left
-  // in the first scene of Galbadia Missile Base, the screen will flicker.
-  ALWAYS_INLINE static s32 VertexPositionToVRAMCoordinate(s32 x) { return SignExtendN<11, s32>(x); }
-
   union VRAMPixel
   {
     u16 bits;

src/core/gpu_hw.h

@@ -61,8 +61,8 @@ protected:
 
     ALWAYS_INLINE void Set(s32 x_, s32 y_, u32 color_, u32 texpage_, u16 u_, u16 v_)
     {
-      x = VertexPositionToVRAMCoordinate(x_);
-      y = VertexPositionToVRAMCoordinate(y_);
+      x = x_;
+      y = y_;
       color = color_;
       texpage = texpage_;
       u = u_;

src/core/gpu_sw.cpp

@@ -322,12 +322,12 @@ void GPU_SW::DrawTriangle(const SWVertex* v0, const SWVertex* v1, const SWVertex
   if (IsClockwiseWinding(v0, v1, v2))
     std::swap(v1, v2);
 
-  const s32 px0 = VertexPositionToVRAMCoordinate(v0->x + m_drawing_offset.x);
-  const s32 py0 = VertexPositionToVRAMCoordinate(v0->y + m_drawing_offset.y);
-  const s32 px1 = VertexPositionToVRAMCoordinate(v1->x + m_drawing_offset.x);
-  const s32 py1 = VertexPositionToVRAMCoordinate(v1->y + m_drawing_offset.y);
-  const s32 px2 = VertexPositionToVRAMCoordinate(v2->x + m_drawing_offset.x);
-  const s32 py2 = VertexPositionToVRAMCoordinate(v2->y + m_drawing_offset.y);
+  const s32 px0 = v0->x + m_drawing_offset.x;
+  const s32 py0 = v0->y + m_drawing_offset.y;
+  const s32 px1 = v1->x + m_drawing_offset.x;
+  const s32 py1 = v1->y + m_drawing_offset.y;
+  const s32 px2 = v2->x + m_drawing_offset.x;
+  const s32 py2 = v2->y + m_drawing_offset.y;
 
   // Barycentric coordinates at minX/minY corner
   const s32 ws = orient2d(px0, py0, px1, py1, px2, py2);
@@ -444,7 +444,7 @@ void GPU_SW::DrawRectangle(s32 origin_x, s32 origin_y, u32 width, u32 height, u8
 
   for (u32 offset_y = 0; offset_y < height; offset_y++)
   {
-    const s32 y = VertexPositionToVRAMCoordinate(origin_y + static_cast<s32>(offset_y));
+    const s32 y = origin_y + static_cast<s32>(offset_y);
     if (y < static_cast<s32>(m_drawing_area.top) || y > static_cast<s32>(m_drawing_area.bottom))
       continue;
 
@@ -452,7 +452,7 @@ void GPU_SW::DrawRectangle(s32 origin_x, s32 origin_y, u32 width, u32 height, u8
 
     for (u32 offset_x = 0; offset_x < width; offset_x++)
     {
-      const s32 x = VertexPositionToVRAMCoordinate(origin_x + static_cast<s32>(offset_x));
+      const s32 x = origin_x + static_cast<s32>(offset_x);
       if (x < static_cast<s32>(m_drawing_area.left) || x > static_cast<s32>(m_drawing_area.right))
         continue;
 
@@ -668,8 +668,8 @@ void GPU_SW::DrawLine(const SWVertex* p0, const SWVertex* p1)
 
   for (s32 i = 0; i <= k; i++)
   {
-    const s32 x = VertexPositionToVRAMCoordinate(m_drawing_offset.x + FixedToIntCoord(current_x));
-    const s32 y = VertexPositionToVRAMCoordinate(m_drawing_offset.y + FixedToIntCoord(current_y));
+    const s32 x = m_drawing_offset.x + FixedToIntCoord(current_x);
+    const s32 y = m_drawing_offset.y + FixedToIntCoord(current_y);
 
     const u8 r = shading_enable ? FixedColorToInt(current_r) : p0->color_r;
     const u8 g = shading_enable ? FixedColorToInt(current_g) : p0->color_g;