/*
* Takes an object of a class that implements the ICallbacks interface
* and registers it handle GLUT generated events, then enters the GLUT main
* loop.
*/
void GLUTBaseRunApplication(OpenGLApplicationBase* pCallbacks)
{
// Complete initialization of the application before rendering begins.
pCallbacks->initialize();
// Check to make sure an appropriate Object has been supplied.
// The object must be a member of a class that implments the
// ICallbacks interface.
if (!pCallbacks)
{
fprintf(stderr, "%s : callbacks not specified!\n", __FUNCTION__);
return;
}
// Save a reference to the ICallbacks object
s_pOpenGLAppBase = pCallbacks;
// Register the ICallbacks to receive events generated by GLUT.
registerCallBacks();
// Enter the GLUT main loop. Control will not return until the
// window is closed.
glutMainLoop();
// Keeps the console window open after the main loop has been exited
// Allows console output to be viewed after the program ends
system( "pause" );
} // end GLUTBaseRun
/**
* Initialisiert das Programm (inkl. I/O und OpenGL) und startet die
* Ereignisbehandlung.
* @param title Beschriftung des Fensters
* @param width Breite des Fensters
* @param height Hoehe des Fensters
* @return ID des erzeugten Fensters, 0 im Fehlerfall
*/
int initAndStartIO (char *title, int width, int height)
{
int windowID = 0;
/* Kommandozeile immitieren */
int argc = 1;
char *argv = "cmd";
G_Width = width;
G_Height = height;
G_NearPlane = 0.1;
G_FarPlane = 1000;
/* Glut initialisieren */
glutInit (&argc, &argv);
/* FensterInitialisierung */
glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
/* FensterGröße */
glutInitWindowSize (G_Width, G_Height);
/* FensterPosition */
glutInitWindowPosition (0, 0);
windowID = glutCreateWindow (title);
if (windowID)
{
/* Hintergrund und so werden initialisiert (Farben) */
if (initScene ())
{
G_ShaderID = loadShaders("waterVertexShader.vert", "waterFragmentShader.frag");
G_ShaderTerrain = loadShaders("textureVertexShader.vert", "textureFragmentShader.frag");
G_ShaderColor = loadShaders("colorVertexShader.vert", "colorFragmentShader.frag");
G_ShaderDepth = loadShaders("textureVertexShader.vert", "textureDepthFragmentShader2.frag");
registerCallBacks ();
allocateMemoryStuffDepth(&G_TexCamera, &G_TexCameraDepth, &G_fboCam);
G_sampler2dLoc = glGetUniformLocation(G_ShaderID, "texsampler");
G_samplerDepth2dLoc = glGetUniformLocation(G_ShaderID, "texsamplerDepth");
Image * imageSand, * imageGrass, * imageRocks, * imageSnow, * imageForest, * imageTundra;
imageSand = malloc(sizeof(Image));
imageGrass = malloc(sizeof(Image));
imageRocks = malloc(sizeof(Image));
imageSnow = malloc(sizeof(Image));
imageForest = malloc(sizeof(Image));
imageTundra = malloc(sizeof(Image));
loadTextureImage(imageSand, "sand1.bmp", &G_TexImageSand );
loadTextureImage(imageGrass, "gras2.bmp", &G_TexImageGrass);
loadTextureImage(imageRocks, "rocks.bmp", &G_TexImageRocks);
loadTextureImage(imageSnow, "snow.bmp", &G_TexImageSnow);
loadTextureImage(imageForest, "forest.bmp", &G_TexImageForest);
loadTextureImage(imageTundra, "tundra.bmp", &G_TexImageTundra);
/* Wasser */
glGenBuffers (1, &G_WaterBuffer);
glBindBuffer (GL_ARRAY_BUFFER, G_WaterBuffer);
glBufferData (GL_ARRAY_BUFFER, sizeof(*getWaterList())*WORLD_SIZE*WORLD_SIZE, getWaterList(), GL_STREAM_DRAW);
glBindBuffer (GL_ARRAY_BUFFER, 0);
glGenBuffers (1, &G_WaterBufferIndex);
glBindBuffer (GL_ELEMENT_ARRAY_BUFFER, G_WaterBufferIndex);
glBufferData (GL_ELEMENT_ARRAY_BUFFER, sizeof(*getWaterIndices())*WORLD_SIZE*WORLD_SIZE*3*2, getWaterIndices(), GL_STREAM_DRAW);
glBindBuffer (GL_ELEMENT_ARRAY_BUFFER, 0);
/* Terrain */
glGenBuffers (1, &G_TerrainBuffer);
glBindBuffer (GL_ARRAY_BUFFER, G_TerrainBuffer);
glBufferData (GL_ARRAY_BUFFER, sizeof(*getTerrainList())*TERRAIN_SIZE*TERRAIN_SIZE, getTerrainList(), GL_STATIC_DRAW);
glBindBuffer (GL_ARRAY_BUFFER, 0);
glGenBuffers (1, &G_TerrainBufferIndex);
glBindBuffer (GL_ELEMENT_ARRAY_BUFFER, G_TerrainBufferIndex);
glBufferData (GL_ELEMENT_ARRAY_BUFFER, sizeof(*getTerrainIndices())*TERRAIN_SIZE*TERRAIN_SIZE*3*2, getTerrainIndices(), GL_STATIC_DRAW);
glBindBuffer (GL_ELEMENT_ARRAY_BUFFER, 0);
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glClearColor(0.0, 1.0, 1.0, 0.0);
glClearDepth(1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
/* Die Endlosschleife wird angestoßen */
glutMainLoop ();
windowID = 0;
glDeleteFramebuffers(1, &G_fboCam);
glDeleteTextures(1, &G_TexCamera);
glDeleteTextures(1, &G_TexCameraDepth);
}
else
{
glutDestroyWindow (windowID);
windowID = 0;
}
}
return windowID;
}
/**
* Initializes the program (including io and OpenGL) and starts the
* event handling.
*/
int initAndStartIO (char *title, int width, int height)
{
int windowID = 0;
G_Width = width;
G_Height = height;
G_WindowTitle = title;
int argc = 1;
char *argv = "cmd";
G_NearPlane = 0.5;
G_FarPlane = 50.0;
/* initialize GLUT */
glutInit (&argc, &argv);
/* initialize window */
glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
/* window size */
glutInitWindowSize (G_Width, G_Height);
/* window position */
glutInitWindowPosition (0, 0);
windowID = glutCreateWindow (G_WindowTitle);
if (windowID)
{
/* Background color and other stuff initialization */
if (initScene ())
{
printf ("--> Load shaders...\n"); fflush(stdout);
registerCallBacks ();
/*
* Load shaders from file
*/
G_ShaderTexture = loadShaders("textureVertexShader.vert", "textureFragmentShader.frag");
G_ShaderColor = loadShaders("colorVertexShader.vert", "colorFragmentShader.frag");
G_ShaderPosColor = loadShaders("posColorVertexShader.vert", "colorFragmentShader.frag");
G_ShaderDepthTexture = loadShaders("textureVertexShader.vert", "textureDepthFragmentShader.frag");
printf ("--> Shaders are loaded.\n"); fflush(stdout);
/*
* Load texture from file
*/
Image * imageRocks;
imageRocks = malloc(sizeof(Image));
loadTextureImage(imageRocks, "sunset-red.bmp", &G_TexImageRocks);
/*
* Create buffer for the object we want to draw.
*/
glGenBuffers(1, &G_ObjectsBuffer);
glBindBuffer(GL_ARRAY_BUFFER, G_ObjectsBuffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(G_Objects)*sizeof(GLfloat), G_Objects, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
allocateMemoryStuffDepth(&G_TexCamera, &G_TexCameraDepth, &G_fboCam);
printf ("--> Finished Initialization.\n"); fflush(stdout);
/* Endless loop is started. */
glutMainLoop ();
windowID = 0;
} else {
glutDestroyWindow (windowID);
return 0;
}
} else {
return 0;
}
glutDestroyWindow (windowID);
return 1;
}
