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#include 

#include 

#include 

#include 

#define EGL_EGLEXT_PROTOTYPES

#define GL_GLEXT_PROTOTYPES

#include "EGL/egl.h"

#include "EGL/eglext.h"

#include "GL/gl.h"

#include "gbm.h"

#include 

#include 

#include 

static EGLImageKHR px_create_image(EGLDisplay display, EGLContext context,

			 int width, int height, int stride, int name, int depth);

int main()

{

    struct gbm_device *gbm;

    struct gbm_surface  *gs;

    EGLDisplay dpy;

    EGLint major, minor;

    EGLContext context;

    EGLSurface surface;

    EGLImageKHR fb_image;

    EGLConfig config;

    EGLint config_attribs[32];

    EGLint num_configs, i;

    GLint list;

    GLuint *texture;

    int fd;

    fd = get_service("DISPLAY");

    gbm = gbm_create_device(fd);

    if( gbm == NULL){

        printf("failed to initialize GBM device");

        return 1;

    };

    init_pixlib(HW_BIT_BLIT);

    dpy = eglGetDisplay((EGLNativeDisplayType)gbm);

    if (!eglInitialize(dpy, &major, &minor))

        printf("failed to initialize EGL display");

    printf("EGL_VERSION = %s\n", eglQueryString(dpy, EGL_VERSION));

    printf("EGL_VENDOR = %s\n", eglQueryString(dpy, EGL_VENDOR));

    printf("EGL_EXTENSIONS = %s\n", eglQueryString(dpy, EGL_EXTENSIONS));

    printf("EGL_CLIENT_APIS = %s\n",eglQueryString(dpy, EGL_CLIENT_APIS));

    i = 0;

    config_attribs[i++] = EGL_RED_SIZE;

    config_attribs[i++] = 1;

    config_attribs[i++] = EGL_GREEN_SIZE;

    config_attribs[i++] = 1;

    config_attribs[i++] = EGL_BLUE_SIZE;

    config_attribs[i++] = 1;

    config_attribs[i++] = EGL_DEPTH_SIZE;

    config_attribs[i++] = 1;

    config_attribs[i++] = EGL_SURFACE_TYPE;

    config_attribs[i++] = EGL_WINDOW_BIT;

    config_attribs[i++] = EGL_RENDERABLE_TYPE;

    config_attribs[i++] = EGL_OPENGL_BIT;

    config_attribs[i] = EGL_NONE;

    if (!eglChooseConfig(dpy,config_attribs, &config, 1, &num_configs) || !num_configs)

        printf("failed to choose a config");

    eglBindAPI(EGL_OPENGL_API);

    context = eglCreateContext(dpy, config, EGL_NO_CONTEXT, NULL);

    if (!context)

        printf("failed to create context");

    gs = gbm_surface_create(gbm, 400, 300, GBM_BO_FORMAT_ARGB8888, GBM_BO_USE_RENDERING);

    BeginDraw();

    DrawWindow(20, 20, 400+9, 300+24, "gl-render", 0x000000, 0x74);

    EndDraw();

    sna_create_mask();

    surface = eglCreateWindowSurface(dpy,config, (EGLNativeWindowType)gs, NULL);

    if (surface == EGL_NO_SURFACE)

        printf("failed to create surface");

    if (!eglMakeCurrent(dpy, surface, surface, context))

        printf("failed to make window current");

    if(fd)

    {

        int ret;

        struct drm_i915_fb_info fb;

       	struct drm_gem_open open_arg;

        memset(&fb, 0, sizeof(fb));

        ret = drmIoctl(fd, SRV_FBINFO, &fb);

        if( ret != 0 )

            printf("failed to get framebuffer info\n");

        memset(&open_arg,0,sizeof(open_arg));

        open_arg.name = fb.name;

        ret = drmIoctl(fd,DRM_IOCTL_GEM_OPEN,&open_arg);

        if (ret != 0) {

            printf("Couldn't reference framebuffer handle 0x%08x\n", fb.name);

		}

  asm volatile ("int3");

		fb_image = px_create_image(dpy,context,fb.width,fb.height,

                                   fb.pitch,open_arg.handle,32);

        glGenTextures(1, texture);

        glBindTexture(GL_TEXTURE_2D, *texture);

        glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);

        glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);

        glEGLImageTargetTexture2DOES(GL_TEXTURE_2D,fb_image);

        glBindTexture(GL_TEXTURE_2D, 0);

    }

    glClearColor( 0, 0, 0, 1);

    list = glGenLists(1);

    glNewList(list, GL_COMPILE);

   /* XXX: this state-change will only be executed if list is called

    * from outside a begin/end pair:

    */

    glShadeModel( GL_FLAT );

    glBegin(GL_TRIANGLES);

    glColor3f(0,0,.7);

    glVertex3f( -0.9,  0.9, -30.0);

    glColor3f(0,.9,0);

    glVertex3f( -0.9, -0.9, -30.0);

    glColor3f(.8,0,0);

    glVertex3f(  0.9,  0.0, -30.0);

    glEnd();

   /* This statechange is potentially NOT redundant:

    */

    glShadeModel( GL_FLAT );

    glBegin(GL_TRIANGLES);

    glColor3f(0,1,0);

    glVertex3f( -0.5,  0.5, -30.0);

    glColor3f(0,0,1);

    glVertex3f( -0.5, -0.5, -30.0);

    glColor3f(1,0,0);

    glVertex3f(  0.5,  0.0, -30.0);

    glEnd();

    glEndList();

  asm volatile ("int3");

    glDrawBuffer(GL_BACK);

    glViewport(0, 0, (GLint)400, (GLint)300);

    glMatrixMode(GL_PROJECTION);

    glLoadIdentity();

    glOrtho(-1.0, 1.0, -1.0, 1.0, -0.5, 100.0);

    glMatrixMode(GL_MODELVIEW);

    glClear(GL_COLOR_BUFFER_BIT);

    glShadeModel( GL_SMOOTH );

    glBegin(GL_TRIANGLES);

   /* Note: call the list from inside a begin/end pair.  The end is

    * provided by the display list...

    */

    glCallList(list);

    glFlush();

    eglSwapBuffers(dpy, surface);

    glFinish();

    eglMakeCurrent(dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);

    eglDestroySurface(dpy, surface);

    gbm_surface_destroy(gs);

    eglDestroyContext(dpy, context);

    eglTerminate(dpy);

    while(1)

    {

        delay(1);

    }

    return 0;

}

int drmIoctl(int fd, unsigned long request, void *arg)

{

    ioctl_t  io;

    io.handle   = fd;

    io.io_code  = request;

    io.input    = arg;

    io.inp_size = 64;

    io.output   = NULL;

    io.out_size = 0;

    return call_service(&io);

}

static EGLImageKHR px_create_image(EGLDisplay display, EGLContext context,

			 int width, int height, int stride, int name, int depth)

{

	EGLImageKHR image;

	EGLint attribs[] = {

		EGL_WIDTH, 0,

		EGL_HEIGHT, 0,

		EGL_DRM_BUFFER_STRIDE_MESA, 0,

		EGL_DRM_BUFFER_FORMAT_MESA,

		EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,

		EGL_DRM_BUFFER_USE_MESA,

		EGL_DRM_BUFFER_USE_SHARE_MESA |

		    EGL_DRM_BUFFER_USE_SCANOUT_MESA,

		EGL_NONE

	};

	attribs[1] = width;

	attribs[3] = height;

	attribs[5] = stride;

	if (depth != 32 && depth != 24)

		return EGL_NO_IMAGE_KHR;

	image = eglCreateImageKHR(display, context, EGL_DRM_BUFFER_MESA,

						 (void *) (uintptr_t)name, attribs);

	if (image == EGL_NO_IMAGE_KHR)

		return EGL_NO_IMAGE_KHR;

	return image;

}