/*
	4k Procedual Gfx template code.
	based on "chocolux" codes by alud.
*/

#include <windows.h>
#include <GL/gl.h>
#include <GL/glext.h>

static const char *vsh =
"[[VS_CODE]]"
;
static const char *fsh =
"[[FS_CODE]]"
;

#define	SCREEN_WIDTH	1024
#define	SCREEN_HEIGHT	768

static const PIXELFORMATDESCRIPTOR pfd =
{
	0,1,PFD_SUPPORT_OPENGL|PFD_DOUBLEBUFFER, 32, 0, 0, 0,
	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 32, 0, 0, 0, 0, 0, 0, 0
};
static DEVMODE dmScreenSettings =
{
	"",0,0,sizeof(dmScreenSettings),0,DM_PELSWIDTH|DM_PELSHEIGHT,
	0,0,0,0,0,0,0,0,0,0,0,0,0,"",0,0,SCREEN_WIDTH,SCREEN_HEIGHT,0,0,0,0,0,0,0,0,0,0
};

void entrypoint()
{
	ChangeDisplaySettings(&dmScreenSettings, CDS_FULLSCREEN); 
	HDC hDC = GetDC( CreateWindow("edit", 0, WS_POPUP|WS_VISIBLE|WS_MAXIMIZE, 0, 0, 0, 0, 0, 0, 0, 0) );
	SetPixelFormat(hDC, ChoosePixelFormat(hDC, &pfd) , &pfd);
	wglMakeCurrent(hDC, wglCreateContext(hDC));
	ShowCursor(0);
	const GLuint p = ((PFNGLCREATEPROGRAMPROC)wglGetProcAddress("glCreateProgram"))();
	GLuint s = ((PFNGLCREATESHADERPROC)(wglGetProcAddress("glCreateShader")))(GL_VERTEX_SHADER);
	((PFNGLSHADERSOURCEPROC)wglGetProcAddress("glShaderSource"))(s,1, &vsh,0);
	((PFNGLCOMPILESHADERPROC)wglGetProcAddress("glCompileShader"))(s);
	((PFNGLATTACHSHADERPROC)wglGetProcAddress("glAttachShader"))(p,s);
	s = ((PFNGLCREATESHADERPROC)wglGetProcAddress("glCreateShader"))(GL_FRAGMENT_SHADER);
	((PFNGLSHADERSOURCEPROC)wglGetProcAddress("glShaderSource"))(s,1, &fsh,0);
	((PFNGLCOMPILESHADERPROC)wglGetProcAddress("glCompileShader"))(s);
	((PFNGLATTACHSHADERPROC)wglGetProcAddress("glAttachShader"))(p,s);
	((PFNGLLINKPROGRAMPROC)wglGetProcAddress("glLinkProgram"))(p);
	((PFNGLUSEPROGRAMPROC)wglGetProcAddress("glUseProgram"))(p);
loop:
	glRecti(1,1,-1,-1);
	SwapBuffers(hDC);
	if (GetAsyncKeyState(VK_ESCAPE))
		ExitProcess(0);
	goto loop;
}