More work to drivers

- Add gfx_test
- add texture loading to GfxOpenGL
- add full submit code
- add debug logging
- add construct and destroy functionality to Pool
- add command functionality
- add vertex and index pools to lithium (static and not threadsafe yet)
- Update GfxDriver Matrix with SetViewPort
- Add glfw (only dependency of gfx_test) maybe later required for input driver

source/common.cpp

@@ -0,0 +1,6 @@
+#include <iostream>
+#include <pd/common.hpp>
+
+void PD::Log(const std::string& txt) {
+  std::cout << "[PD] " << txt << std::endl;
+}

source/drivers/gfx.cpp

@@ -5,15 +5,20 @@ PD_API std::unique_ptr<GfxDriver> Gfx::driver;
 
 GfxDriver::GfxDriver(std::string_view name) : DriverInterface(name) {}
 
-void GfxDriver::SetViewPort(const ivec2& size) { ViewPort = size; }
+void GfxDriver::SetViewPort(const ivec2& size) {
+  ViewPort = size;
+  Projection = Mat4::Ortho(0.f, ViewPort.x, ViewPort.y, 0.f, 1.f, -1.f);
+}
 void GfxDriver::SetViewPort(int x, int y) {
   ViewPort.x = x;
   ViewPort.y = y;
+  Projection = Mat4::Ortho(0.f, ViewPort.x, ViewPort.y, 0.f, 1.f, -1.f);
 }
 
 void GfxDriver::Reset() {
   CurrentVertex = 0;
   CurrentIndex = 0;
+  ResetPools();
   SysReset();
 }
 }  // namespace PD

source/lithium/pools.cpp

@@ -0,0 +1,26 @@
+#include <pd/lithium/pools.hpp>
+
+#include "pd/common.hpp"
+#include "pd/core/pool.hpp"
+#include "pd/lithium/vertex.hpp"
+
+namespace PD {
+namespace Li {
+PD::Pool<Vertex> pVtxPool;
+PD::Pool<u16> pIdxPool;
+
+void InitPools(size_t max_vertices) {
+  pVtxPool.Init(max_vertices);
+  pIdxPool.Init(max_vertices * 2);
+}
+
+Vertex* AllocateVertices(size_t count) { return pVtxPool.Allocate(count); }
+
+u16* AllocateIndices(size_t count) { return pIdxPool.Allocate(count); }
+
+void ResetPools() {
+  pVtxPool.Reset();
+  pIdxPool.Reset();
+}
+}  // namespace Li
+}  // namespace PD