Class Example

examples/TEST_Shaders.cpp:63–259

#include "extensions/olcPGEX_TransformedView.h"

class Example : public olc::PixelGameEngine
{
public:
	Example()
	{
		// Name your application
		sAppName = "Example";
	}

	/*
	
	PLEASE NOTE! This is all an ill-thought through idea. I do not recommend you actually use this.
	
	*/

	// You need an instance of a shader object to apply pixel shading
	olc::Shade shader;

	// Effects are the pixel shaders. They can be custom, or selected from a built in library
	olc::Effect fxScanlines;
	olc::Effect fxNormal;
	olc::Effect fxBoxblur;
	olc::Effect fxGreyscale;
	olc::Effect fxThreshold;
	olc::Effect fxSobel;

	// Pixel shading is all done in Decal land, so for this demo we render to several decals with
	// different shading, and composite the result
	olc::Renderable gfxNormalBouncers;
	olc::Renderable gfxShadedBouncers;
	olc::Renderable gfxTexture1;
	olc::Renderable gfxTexture2;

	olc::Renderable gfxEffect1;
	olc::Renderable gfxEffect2;
	olc::Renderable gfxEffect3;
	olc::Renderable gfxEffect4;
	olc::Renderable gfxEffect5;


	size_t nBouncers = 50;
	std::vector<std::pair<olc::vf2d, olc::vf2d>> vBouncers;

	olc::TransformedView tv;


public:
	bool OnUserCreate() override
	{
		// Transformed view is for panning and zooming
		tv.Initialise({ ScreenWidth(), ScreenHeight() }, { 1.0f, 1.0f });

		// These are decals, but created manually rather than from a file
		gfxNormalBouncers.Create(ScreenWidth(), ScreenHeight());
		gfxShadedBouncers.Create(ScreenWidth(), ScreenHeight());
		gfxEffect1.Create(200, 200);
		gfxEffect2.Create(200, 200);
		gfxEffect3.Create(200, 200);