0.7.0 rewrite dev

- remove everyting
- keep core
-rename bit_utils to bits
- add formatter for  color
- add float getters to color
- start with new drivers api

include/pd/drivers/gfx.hpp

@@ -1,119 +1,82 @@
 #pragma once
 
-/*
-MIT License
-Copyright (c) 2024 - 2026 René Amthor (tobid7)
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
- */
-
-#include <pd/core/core.hpp>
-#include <pd/drivers/types.hpp>
+#include <pd/core/mat.hpp>
+#include <pd/drivers/interface.hpp>
 #include <pd/lithium/command.hpp>
-#include <pd/lithium/texture.hpp>
 
 using LiBackendFlags = PD::u32;
 enum LiBackendFlags_ {
   LiBackendFlags_None = 0,
-  LiBackendFlags_FlipUV_Y = PD_BIT(0),  // Essential for font loading
+  LiBackendFlags_FlipUV_Y = 1 << 0,  // Essential for font loading
 };
 
 namespace PD {
-// The backend api nobody asked for
-class GfxDriver2 {
- public:
-  GfxDriver2(const std::string& name = "NullGfx") : pName(name) {};
-  ~GfxDriver2() = default;
-
-  virtual void Init() {}
-  virtual void Deinit() {}
-  virtual void Draw(const PD::Li::CmdPool& pool) {}
-  virtual void TexBind(PD::Li::TexAddress addr) {}
-  virtual PD::Li::TexAddress TexLoad(
-      const std::vector<PD::u8>& pixels, int w, int h,
-      PD::Li::Texture::Type type = PD::Li::Texture::Type::RGBA32,
-      PD::Li::Texture::Filter filter = PD::Li::Texture::Filter::LINEAR) {
-    return 0;
-  }
-  virtual void TexDelete(PD::Li::TexAddress tex) {}
-
- protected:
-  const std::string pName;
-  LiBackendFlags pFlags = 0;
-  size_t CurrentIndex = 0;
-  size_t CurrentVertex = 0;
-  ivec2 ViewPort;
+using TextureID = ptr;
+enum class TextureFilter {
+  Linear,
+  Nearest,
 };
-class GfxDriver {
+
+enum class TextureFormat {
+  RGBA32,
+  A8,
+};
+
+class PD_API GfxDriver : public DriverInterface {
  public:
-  GfxDriver(const std::string& name = "NullGfx") : pName(name) {}
-  GfxDriver(PDDriverData data) : pName("NullGfx") {}
-  ~GfxDriver() = default;
-
-  PD_SHARED(GfxDriver);
-
-  void PostInit();
+  GfxDriver(std::string_view name = "Default") : DriverInterface(name) {}
+  virtual ~GfxDriver() {}
 
   virtual void Init() {}
   virtual void Deinit() {}
-  virtual void NewFrame() {}
-
-  virtual void BindTex(Li::TexAddress addr) {}
-
-  virtual void RenderDrawData(const Li::CmdPool& Commands) {}
-
-  void SetViewPort(const ivec2& vp) { ViewPort = vp; }
-  void SetViewPort(int w, int h) { ViewPort = PD::ivec2(w, h); }
-
-  virtual Li::Texture::Ref LoadTex(
-      const std::vector<u8>& pixels, int w, int h,
-      Li::Texture::Type type = Li::Texture::Type::RGBA32,
-      Li::Texture::Filter filter = Li::Texture::Filter::LINEAR) {
-    // Texture loading not supported (when this func not get override)
-    return nullptr;
+  virtual void Submit() {}
+  virtual void BindTexture(TextureID id) {}
+  virtual void Reset() {}
+  virtual TextureID LoadTexture(const std::vector<PD::u8>& pixels, int w, int h,
+                                TextureFormat type = TextureFormat::RGBA32,
+                                TextureFilter filter = TextureFilter::Linear) {}
+  virtual void DeleteTexture(const TextureID& tex) {}
+  void Draw(const std::vector<Li::Command>& commands) {
+    CountCommands += commands.size();
+    // Bind shader
+    Projection = Mat4::Ortho(0.f, ViewPort.x, ViewPort.y, 0.f, 1.f, -1.f);
+    // Shader Set Mtx
+    size_t index = 0;
+    while (index < commands.size()) {
+      CurrentTex = commands[index].Tex;
+      if (!CurrentTex) {
+        index++;
+        continue;
+      }
+    }
   }
 
-  virtual void DestroyTex(PD::Li::Texture::Ref tex) {}
-
-  Li::Texture::Ref GetSolidTex() { return pSolid; }
-
-  const std::string& GetName() const { return pName; }
-
-  const std::string pName = "NullGfx";
-  LiBackendFlags Flags = 0;
-  ivec2 ViewPort;
-  Mat4 Projection;
-  Li::Texture::Ref pSolid;
-  size_t CurrentVertex = 0;
+ private:
   size_t CurrentIndex = 0;
+  size_t CurrentVertex = 0;
+  TextureID CurrentTex = 0;
+  Mat4 Projection;
+  ivec2 ViewPort;
 
-  /** Debug Variables */
+  // Counters
+  size_t CountDrawcalls = 0;
+  size_t CountCommands = 0;
+  size_t CountVertices = 0;
+  size_t CountIndices = 0;
+};
 
-  // Optional Index counter
-  u32 IndexCounter;
-  // Optional Vertex counter
-  u32 VertexCounter;
-  // Optional Frame Counter
-  u64 FrameCounter;
-  // Draw calls counter
-  u32 DrawCalls;
-  // Command Counter
-  u32 DrawCommands;
+class PD_API Gfx {
+ public:
+  Gfx() = default;
+  ~Gfx() = default;
+
+  template <typename T, typename... Args>
+  static void UseDriver(Args&&... args) {
+    // assert(driver == nullptr && "OS Driver already set");
+    driver = std::make_unique<T>(std::forward<Args>(args)...);
+  }
+
+ private:
+  static std::unique_ptr<GfxDriver> driver;
 };
 }  // namespace PD