fixed textures overlapping

engine/inc/renderer/core/gs/renderer_core_gs.hpp

@@ -11,6 +11,7 @@
 #pragma once
 
 #include "renderer/renderer_settings.hpp"
+#include "./renderer_core_gs_vram.hpp"
 
 namespace Tyra {
 
@@ -22,23 +23,16 @@ class RendererCoreGS {
   prim_t prim;
   lod_t lod;
   zbuffer_t zBuffer;
+  RendererCoreGSVRam vram;
 
   void init(RendererSettings* settings);
 
   void flipBuffers();
 
-  float getVRamFreeSpaceInMB() const {
-    return 4.0F - spaceOccupiedByFrameBuffers - spaceOccupiedByZBuffer -
-           vramMargin;
-  }
-
  private:
   constexpr static float gsCenter = 4096.0F;
   constexpr static float screenCenter = gsCenter / 2.0F;
-  constexpr static float vramMargin =
-      0.003F;  // We don't have perfectly 4MB of VRAM
 
-  float spaceOccupiedByFrameBuffers, spaceOccupiedByZBuffer;
   RendererSettings* settings;
   framebuffer_t frameBuffers[2];
   packet2_t* flipPacket;

engine/inc/renderer/core/gs/renderer_core_gs_vram.hpp

@@ -0,0 +1,49 @@
+/*
+# ______       ____   ___
+#   |     \/   ____| |___|
+#   |     |   |   \  |   |
+#-----------------------------------------------------------------------
+# Copyright 2022, tyra - https://github.com/h4570/tyra
+# Licenced under Apache License 2.0
+# Sandro Sobczyński <sandro.sobczynski@gmail.com>
+*/
+
+#pragma once
+
+#include "renderer/renderer_settings.hpp"
+#include "renderer/core/texture/models/texture.hpp"
+
+namespace Tyra {
+
+class RendererCoreGSVRam {
+ public:
+  RendererCoreGSVRam();
+  ~RendererCoreGSVRam();
+
+  const float& getFreeSpaceInMB();
+
+  float getSizeInMB(const Texture& texture);
+  float getSizeInMB(const TextureData& texData);
+  float getSizeInMB(int width, const int& height, const int& psm,
+                    const int& alignment);
+
+  int allocate(const TextureData& texData);
+  int allocateBuffer(const int& width, const int& height, const int& psm);
+
+  /** Free texture, FIFO order */
+  void free(const int& address);
+
+ private:
+  int allocate(const int& width, const int& height, const int& psm,
+               const int& alignment);
+
+  int getSize(int width, const int& height, const int& psm,
+              const int& alignment);
+
+  static constexpr float ptr2MB = 262144.0F;
+  bool touched;
+  int pointer;
+  float cachedFreeSpace;
+};
+
+}  // namespace Tyra