//Set up variables
bool DemoInit()
{
if(!window.Init("Project Template", 640, 480, 32, 24, 8, WINDOWED_SCREEN))
return 0; //quit if not created
SetUpARB_multitexture();
SetUpEXT_texture3D();
SetUpEXT_texture_edge_clamp();
SetUpNV_register_combiners();
SetUpNV_texture_shader();
SetUpNV_vertex_program();
if( !EXT_texture_edge_clamp_supported || !ARB_multitexture_supported ||
!NV_vertex_program_supported || !NV_register_combiners_supported)
return false;
//Check we have at least 3 texture units
GLint maxTextureUnitsARB;
glGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &maxTextureUnitsARB);
if(maxTextureUnitsARB<3)
{
errorLog.OutputError("I require at least 3 texture units");
return false;
}
//Set light colors
lightColors[0].Set(1.0f, 1.0f, 1.0f, 1.0f);
lightColors[1].Set((float)47/255, (float)206/255, (float)240/255, 1.0f);
lightColors[2].Set((float)254/255, (float)48/255, (float)18/255, 1.0f);
lightColors[3].Set((float)83/255, (float)243/255, (float)29/255, 1.0f);
//Load textures
//Decal image
decalImage.Load("decal.tga");
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 light textures
if(!InitLightTextures( atten1DTexture, atten2DTexture, atten3DTexture,
gaussian1DTexture, gaussian2DTexture))
return false;
camera.Init(VECTOR3D(0.0f, 0.0f, 3.5f));
//reset timer for start
timer.Reset();
return true;
}
//Set up variables
bool DemoInit()
{
SetUpARB_multitexture();
SetUpARB_texture_cube_map();
SetUpEXT_compiled_vertex_array();
SetUpEXT_texture_edge_clamp();
SetUpNV_register_combiners();
SetUpNV_vertex_program();
SetUpNV_texture_shader();
if( !GL_ARB_texture_cube_map || !GL_EXT_compiled_vertex_array ||
!GL_ARB_multitexture || !GL_NV_register_combiners ||
!GL_NV_vertex_program || !GL_EXT_texture_edge_clamp)
return false;
//Get some useful info
int maxTextureUnitsARB;
glGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &maxTextureUnitsARB);
int maxGeneralCombinersNV;
glGetIntegerv(GL_MAX_GENERAL_COMBINERS_NV, &maxGeneralCombinersNV);
if( GL_NV_texture_shader &&
maxTextureUnitsARB>=4 &&
maxGeneralCombinersNV>=4)
{
Util::log("Higher Quality bump mapping supported");
paths1And2Supported=true;
currentTechnique=TEXTURE_LOOKUP;
}
else
Util::log("Higher Quality bump mapping unsupported");
//Load Textures
//normal map - put gloss map in alpha
normalMapImage.Load("Normal Map.bmp");
normalMapImage.LoadAlphaTGA("gloss.tga");
glGenTextures(1, &normalMapTexture);
glBindTexture(GL_TEXTURE_2D, normalMapTexture);
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);
//decal
decalImage.Load("Decal.bmp");
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);
if(paths1And2Supported)
{
//Create signed normap map
//Create space for signed data
GLbyte * signedData=new GLbyte[normalMapImage.width*normalMapImage.height*3];
if(!signedData)
{
Util::log("Unable to allocate memory for signed normal map data");
return false;
}
//Convert unsigned to signed RGB data, ignoring alpha
for(unsigned int i=0; i<normalMapImage.width*normalMapImage.height; i++)
{
for(unsigned int j=0; j<3; j++)
{
signedData[i*3+j]=normalMapImage.data[i*4+j]-128;
}
}
glGenTextures(1, &signedNormalMap);
glBindTexture(GL_TEXTURE_2D, signedNormalMap);
glTexImage2D( GL_TEXTURE_2D, 0, GL_SIGNED_RGBA8_NV, normalMapImage.width, normalMapImage.height,
0, GL_RGB, GL_BYTE, signedData);
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);
if(signedData)
delete [] signedData;
signedData=NULL;
}
//make sure texImage2D is finished with normalMapImage before we change the image
glFinish();
//Flatten the bumps in the normal map
for(unsigned int i=0; i<normalMapImage.width*normalMapImage.height; ++i)
{
normalMapImage.data[i*4]=128;
normalMapImage.data[i*4+1]=128;
normalMapImage.data[i*4+2]=255;
}
//create flat normal map with gloss map in alpha
glGenTextures(1, &flatNormalMap);
glBindTexture(GL_TEXTURE_2D, flatNormalMap);
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);
if(paths1And2Supported)
{
//Create signed flat normap map
//Create space for signed data
GLbyte * signedData=new GLbyte[normalMapImage.width*normalMapImage.height*3];
if(!signedData)
{
Util::log("Unable to allocate memory for signed normal map data");
return false;
}
//Convert unsigned to signed RGB data, ignoring alpha
for(unsigned int i=0; i<normalMapImage.width*normalMapImage.height; i++)
{
for(unsigned int j=0; j<3; j++)
{
signedData[i*3+j]=normalMapImage.data[i*4+j]-128;
}
}
glGenTextures(1, &signedFlatNormalMap);
glBindTexture(GL_TEXTURE_2D, signedFlatNormalMap);
glTexImage2D( GL_TEXTURE_2D, 0, GL_SIGNED_RGBA8_NV, normalMapImage.width, normalMapImage.height,
0, GL_RGB, GL_BYTE, signedData);
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);
if(signedData)
delete [] signedData;
signedData=NULL;
//Create specular ramp texture
unsigned char specularRampValues[256];
for(unsigned int i=0; i<256; i++)
{
double poweredValue=(double)i/255;
//raise to 16th power
poweredValue= poweredValue*poweredValue*poweredValue*poweredValue*
poweredValue*poweredValue*poweredValue*poweredValue*
poweredValue*poweredValue*poweredValue*poweredValue*
poweredValue*poweredValue*poweredValue*poweredValue;
specularRampValues[i] = char(poweredValue*255);
}
glGenTextures(1, &specularRamp);
glBindTexture(GL_TEXTURE_2D, specularRamp);
glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA8, 256, 1,
0, GL_LUMINANCE, GL_UNSIGNED_BYTE, specularRampValues);
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_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
}
//reset timer for start
timer.Reset();
return true;
}
