#include <SDL>
#include <bgfx>

#define BGFXH_IMPL
#include <bfgxh/bgfxh.h>
#include <bfgxh/sdlWindow.h>

int main (int argc, char *argv[]) {
	SDL_Init(0);
	SDL_Window * mWindow = SDL_CreateWindow("BGFXH Test", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 1200, 720, SDL_WINDOW_SHOWN | SDL_WINDOW_RESIZABLE);
	bgfxh::initSdlWindowAndBgfx(mWindow); // Creates a bgfx context in an sdl window
	
	// You now have a window + a bgfx context!
	while (true) {
		drawStuff();
		bgfx::frame();
		}
	}

#define BGFXH_IMPL
#include <bfgxh/loadTexture.h>

...

bgfx::TextureHandle foo = bgfxh::loadTexture ("filename.ext", BGFX_TEXTURE_FLAGS | BGFX_SAMPLER_FLAGS);

#define BGFXH_IMPL
#include <bfgxh/bgfxh.h>
#include <bfgxh/sdlWindow.h> // If using SDL Windows!

...

initSdlWindowAndBgfx(mWindow);
bgfxh::init(backbufferWidth, backbufferHeight, "path/to/shaders"); //<-- shaders, uniforms and vertexDecl's for debug drawing are made here

.... OR ....

bgfx::Init mInit;
// Set mInit's parameters here
initSdlWindowAndBgfx(mWindow, mInit);
bgfxh::init(backbufferWidth, backbufferHeight, "path/to/shaders"); //<-- shaders, uniforms and vertexDecl's for debug drawing are made here

.... OR ....

initSdlWindow(mWindow); // Don't call bgfx::init() internally. Infact if you're not using SDL you can omit this line altogether
bgfx::init();
bgfxh::init(backbufferWidth, backbufferHeight, "path/to/shaders");

#define BGFXH_IMPL
#include <bfgxh/bgfxh.h>

...

bgfx::init();
bgfxh::init(backbufferWidth, backbufferHeight, "path/to/shaders"); //<-- shaders, uniforms and vertexDecl's for debug drawing are made here

...

// Initialises a 2D view, with tag, size, no framebuffer attachement (render to backbuffer), doesn't clear, and is not a unit ortho matrix 
bgfxh::initView2D (VIEW_ID_OUTPUT_PASS, "output pass", backbufferWidth, backbufferHeight, BGFX_INVALID_HANDLE, false, false);
// Viewing a texture
// ViewId, thingToInspect, xPos, yPos, xSize, ySize, (backbufferWidth), (backbufferHeight)
// (backbufferWidth), (backbufferHeight) are only used for pixel-perfect dx9 rendering and can be ommitted if you don't care about that
bgfxh::debugDrawTexture (VIEW_ID_OUTPUT_PASS, textureHandleToView, 10, 10, 120, 120, backbufferWidth, backbufferHeight); 

// Viewing a framebuffer
bgfxh::debugDrawFramebuffer (VIEW_ID_OUTPUT_PASS, framebufferToInspect, 10+130, 10, 120, 120, backbufferWidth, backbufferHeight);

// Viewing the output of a bgfxh::effect
bgfxh::debugDrawFramebuffer (VIEW_ID_OUTPUT_PASS, mBgfxhLumEffect.getOutputFramebuffer(), 10+130*2, 10, 120, 120, backbufferWidth, backbufferHeight);

// Inspecting a cascading shadow map (eg, cascadingShadowMapEffect.h)
for (unsigned int i = 0; i < mBgfxhCsmEffect.nShadowLevels; ++i)
	bgfxh::debugDrawFramebuffer (VIEW_ID_OUTPUT_PASS, mBgfxhCsmEffect.getOutputFramebuffer(i), 10 + 130*i, 130, 120, 120, backbufferWidth, backbufferHeight);
		

#define BGFXH_IMPL
#include <bfgxh/bgfxh.h>
// Optionally #define BGFXH_EMBED_EFFECT_SHADERS if you want shaders embedded at compile time
#include <bfgxh/effects/bloom.h>
#include <bfgxh/effects/lum.h>

class GfxPipeline {
public:
	// Effect objects
	bgfxh::bloomEffect mBloomEffect; // Each "job" or is a class! 
	bgfxh::lumEffect mLumEffect;
	bgfxh::tonemappingEffect mTonemappingEffect;
	// Your resources
	bgfx::ProgramHandle m_myProgram;
	bgfx::FrameBufferHandle m_myFramebuffer;

	GfxPipeline () {}
	~GfxPipeline() {} // Each "job" will clean up its resources on destruction

	void init () {
		// Set parameters
		mBloomEffect.setSize (600, 360);
		mBloomEffect.nBloomBlurPasses = 2;
		mBloomEffect.init(); // Resources are created here!
		mLumEffect.init();
		
		mTonemappingEffect.setSize (1200, 720);
		mTonemappingEffect.maxAdditonalSamplerSlots = 1; // Configure the tonemapping filter to accept a blended attachement
		mTonemappingEffect.init ();
		
		// Your stuff
		m_myProgram = bgfxh::loadProgram("path/vs_forwardRenderer.bin", "fs_forwardRenderer.bin");
		m_myFramebuffer = ... ; // Gbuffer? Or just a colour/depth buffer for forward rendering!
		
		}
		
	void submitScene (YourScene) {
		mLumEffect.viewId = 1; // A lum filter will take up 5 views
		mBloomEffect.viewId = 1 + mLumEffect.getViewIncrement();  // A bloom filter will take a number of views depending on how many blur passes you are doing
		mTonemappingEffect.viewId = mBloomEffect.viewId + mBloomEffect.getViewIncrement();
		
		...
		// Render your scene to a framebuffer (m_myFramebuffer)
		// You still have to implement your own forward or gbuffer here
		//bgfx::submit(0, m_myProgram)
		
		...
		// Apply Post Processing using the filters!
		mLumEffect.submit (bgfx::getTexture(m_myFramebuffer, 0));
		// Get the output of a effect as a texture that you can use in another effect!
		mBloomEffect.submit (mLumEffect.getOutputTexture(), bgfx::getTexture(m_myFramebuffer, 0)); 
		// Configure the tonemapping filter to additively blend the bloom
		mBgfxhTonemappingEffect.setExtraComponent (0, mBgfxhBloomEffect.getOutputTexture(), 1.0f, 0.f);
		// Does the tonemapping. Renders to backbuffer by default
		mTonemappingEffect.submit (bgfx::getTexture(m_myFramebuffer, 0), mLumEffect.getOutputTexture()); 
		
		// Debug render the lum filter's output to see if it is calculating sensible lum values
		const int OUTPUT_PASS_ID = 200;
		bgfxh::initView2D (VIEW_ID_OUTPUT_PASS, "output pass", backbufferWidth, backbufferHeight, BGFX_INVALID_HANDLE, false, false);
		bgfxh::debugDrawFramebuffer (VIEW_ID_OUTPUT_PASS, mLumEffect.getOutputFramebuffer(), 10, 10, 120, 120, backbufferWidth, backbufferHeight);
		}
		
		
	}

//Wrapper.h
#include <bfgxh/bgfxh.h>
#include <bfgxh/...>
#include <bfgxh/...> //etc

//Wrapper.cpp
#define BGFXH_IMPL
#include <bfgxh/bgfxh.h>
#include <bfgxh/...>
#include <bfgxh/...> //etc

#define BGFXH_IMPL
#include <bfgxh/bgfxh.h>

...

bgfxh::frustum mFrustum;
mFrustum.setFromViewAndProjMatrix (viewMtx, projMtx);

for (each object in scene) {
	if (mFrustum.frustumCheck (object.positionVec3, object.radius)) continue; // Where radius is the radius of some bounding sphere for the object
	... Alternatively ....
	if (mFrustum.frustumCheck (object.bgfxModelMtx, object.radius)) continue;
	// Set uniforms, transform matricies, etc
	bgfx::setTransform (object.bgfxModelMtx);
	bgfx::submit();
	}