//Set up variables
bool DemoInit()
{
//Seed random number generator
srand( (unsigned)time( NULL ) );
//Initialise the array of vertices
numVertices=gridDensity*gridDensity;
vertices=new SIMPLE_VERTEX[numVertices];
if(!vertices)
{
LOG::Instance()->OutputError("Unable to allocate space for %d vertices", numVertices);
return false;
}
for(int i=0; i<gridDensity; ++i)
{
for(int j=0; j<gridDensity; ++j)
{
vertices[i*gridDensity+j].position.Set( (float(i)/(gridDensity-1))*2-1,
0.0f,
(float(j)/(gridDensity-1))*2-1);
vertices[i*gridDensity+j].normal.Set( 0.0f, 1.0f, 0.0f);
vertices[i*gridDensity+j].texCoords.Set( (float(i)/(gridDensity-1)),
-(float(j)/(gridDensity-1)));
}
}
//Initialise the indices
numIndices=2*(gridDensity)*(gridDensity-1);
indices=new GLuint[numIndices];
if(!indices)
{
LOG::Instance()->OutputError("Unable to allocate space for %d indices", numIndices);
return false;
}
for(int i=0; i<gridDensity-1; ++i)
{
for(int j=0; j<gridDensity; ++j)
{
indices[(i*gridDensity+j)*2 ]=(i+1)*gridDensity+j;
indices[(i*gridDensity+j)*2+1]=i*gridDensity+j;
}
}
//Load texture
IMAGE floorImage;
floorImage.Load("OpenGL.tga");
if(floorImage.paletted)
floorImage.ExpandPalette();
glGenTextures(1, &floorTexture);
glBindTexture(GL_TEXTURE_2D, floorTexture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
gluBuild2DMipmaps( GL_TEXTURE_2D, GL_RGBA8, floorImage.width, floorImage.height,
floorImage.format, GL_UNSIGNED_BYTE, floorImage.data);
//Initialise the lights
for(int i=0; i<numLights; ++i)
{
lights[i].position.Set( (float(rand())/RAND_MAX)*2-1,
0.02f,
(float(rand())/RAND_MAX)*2-1);
lights[i].velocity.Set( (float(rand())/RAND_MAX)*2-1,
0.0f,
(float(rand())/RAND_MAX)*2-1);
lights[i].color.Set( (float(rand())/RAND_MAX)*0.75f,
(float(rand())/RAND_MAX)*0.75f,
(float(rand())/RAND_MAX)*0.75f,
1.0f);
}
//Load vertex programs
if(GLEE_NV_vertex_program)
{
glGenProgramsNV(1, &vp1);
glBindProgramNV(GL_VERTEX_PROGRAM_NV, vp1);
LoadARB_program(GL_VERTEX_PROGRAM_NV, "vp1.txt");
}
if(GLEE_NV_vertex_program2)
{
glGenProgramsNV(1, &vp2);
glBindProgramNV(GL_VERTEX_PROGRAM_NV, vp2);
LoadARB_program(GL_VERTEX_PROGRAM_NV, "vp2.txt");
}
if(GLEE_NV_vertex_program || GLEE_NV_vertex_program2)
{
//Track modelview-projection matrix
glTrackMatrixNV(GL_VERTEX_PROGRAM_NV, 0, GL_MODELVIEW_PROJECTION_NV, GL_IDENTITY_NV);
}
//reset timer
timer.Reset();
return true;
}
//Called for initiation
void Init(void)
{
//Check for and set up extensions
// if( !SetUpARB_multitexture() || !SetUpARB_texture_cube_map() ||
// !SetUpARB_texture_env_combine() || !SetUpARB_texture_env_dot3())
// {
// printf("Required Extension Unsupported\n");
// exit(0);
// }
//Load identity modelview
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
//Shading states
glShadeModel(GL_SMOOTH);
glClearColor(0.2f, 0.4f, 0.2f, 0.0f);
glColor4f(1.0f, 1.0f, 1.0f, 1.0f);
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
//Depth states
glClearDepth(1.0f);
glDepthFunc(GL_LEQUAL);
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
//Load normal map
IMAGE normalMapImage;
std::stringstream fn;
fn << texture_path;
fn << "NormalMap.bmp";
normalMapImage.Load(fn.str().c_str());
// normalMapImage.Load("NormalMap.bmp");
normalMapImage.ExpandPalette();
//Convert normal map to texture
glGenTextures(1, &normalMap);
glBindTexture(GL_TEXTURE_2D, normalMap);
glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA8, normalMapImage.width, normalMapImage.height,
0, normalMapImage.format, GL_UNSIGNED_BYTE, normalMapImage.data);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
//Load decal image
IMAGE decalImage;
std::stringstream fn_decal;
fn_decal << texture_path;
fn_decal << "Decal.bmp";
decalImage.Load(fn_decal.str().c_str());
// decalImage.Load("Decal.bmp");
decalImage.ExpandPalette();
//Convert decal image to texture
glGenTextures(1, &decalTexture);
glBindTexture(GL_TEXTURE_2D, decalTexture);
glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA8, decalImage.width, decalImage.height,
0, decalImage.format, GL_UNSIGNED_BYTE, decalImage.data);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
//Create normalisation cube map
glGenTextures(1, &normalisationCubeMap);
glBindTexture(GL_TEXTURE_CUBE_MAP_ARB, normalisationCubeMap);
GenerateNormalisationCubeMap();
glTexParameteri(GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_CUBE_MAP_ARB, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
}
