bool RAM::init()
{
if ((size != getNextPowerOf2(size)) ||
(!size))
{
logMessage("invalid value for size");
return false;
}
if (controlBus)
controlBus->postMessage(this, CONTROLBUS_GET_POWERSTATE, &powerState);
if (!powerOnPattern.size())
powerOnPattern.resize(1);
else
powerOnPattern.resize((size_t) getNextPowerOf2((int) powerOnPattern.size()));
size_t oldSize = data.size();
data.resize((size_t) size);
if (oldSize == 0)
initMemory();
datap = &data.front();
mask = size - 1;
return true;
}
Int32 getQuadtreeLeafNodeCount(Int32 iSamplesX,
Int32 iSamplesY,
Int32 iTileSize)
{
const Int32 iLeafNodeCountX =
getNextPowerOf2(getCeil(Real32(iSamplesX) / Real32(iTileSize)));
const Int32 iLeafNodeCountY =
getNextPowerOf2(getCeil(Real32(iSamplesY) / Real32(iTileSize)));
// todo: output a warning, if leafNodeCountX and leafNodeCountY are to
// much apart.. this wastes a lot of memory right now..
return osgMax(iLeafNodeCountX, iLeafNodeCountY);
}
bool ROM::init()
{
if (!data.size())
{
logMessage("missing ROM");
return false;
}
OEAddress size = getNextPowerOf2((int) data.size());
data.resize((size_t) size);
datap = &data.front();
mask = size - 1;
return true;
}
bool GeometryClipmaps::initialize( int requestedLevelSize,
HeightDataSource* heightSource,
TextureDataSource* textureSource )
{
if( requestedLevelSize < 3 )
{
// todo: report an error...
return false;
}
if( !heightSource )
{
return false;
}
// fix the levelsize to be 2**x - 1:
const int levelSampleCount = int(getNextPowerOf2( requestedLevelSize ) - 1);
const int worldSampleCount = int(heightSource->getSampleCount().maxValue());
// Calculate needed level count
int levelCount = 1;
int levelSize = levelSampleCount;
while( levelSize < worldSampleCount )
{
levelCount++;
levelSize = ( 1 << ( levelCount - 1 ) ) * ( levelSampleCount - 1 ) + 1;
}
// debug: use only 2 levels:
const int maxLevelCount = 20;
levelCount = std::min( maxLevelCount, levelCount );
// todo: make this a parameter:
const int TextureSize = 256;
levels_.resize( levelCount );
// initialize clipmap-level:
for( int i = 0; i < levelCount; ++i )
{
// Level 0 is the coarsest one: so reverse the index:
const int levelIndex = levelCount - i - 1;
GeometryClipmapLevel& level = levels_[ i ];
level.index = i;
level.isSampleDataDirty = true;
level.sampleSpacing = 1 << levelIndex;
level.heightmap.initialize( levelSampleCount );
level.textureData = Image::create();
level.textureData->set( Image::OSG_RGBA_PF, TextureSize, TextureSize );
}
// one full levelupdate is allowed..
sampleUpdateBudget_ = ( levelSampleCount * levelSampleCount );
// initialize the render data:
if( !cpuRenderer_.initialize( this ) )
{
levels_.clear();
return false;
}
heightSource_ = heightSource;
textureSource_ = textureSource;
return true;
}
Texture::Texture(Image* image){
eraseProtection = false;
xRatio = 1.0f;
yRatio = 1.0f;
nonPowerOfTwo = false;
glGenTextures(1, &textureId);
glBindTexture(GL_TEXTURE_2D, textureId);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);//);GL_NEAREST
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);//GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
//glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
GLint internalFormat = GL_RGB;
format = GL_RGB;
logInf("image w:%i h:%i format:%i",image->width,image->height,image->bytes_per_pixel);
xSquare = getNextPowerOf2(image->width);
ySquare = getNextPowerOf2(image->height);
widthOriginal = image->width;
heightOriginal = image->height;
if(image->bytes_per_pixel == Image::RGBA){
internalFormat = GL_RGBA;
format = GL_RGBA;
}
if(xSquare != image->width || ySquare != image->height){
nonPowerOfTwo = true;
logWar("the current image isn't a power of two w:%i h:%i the image will be of w:%i h:%i and cropped", image->width, image->height, xSquare, ySquare);
xRatio = (float)image->width / xSquare;
yRatio = (float)image->height / ySquare;
glTexImage2D(GL_TEXTURE_2D, // target
0, // level, 0 = base, no minimap,
internalFormat, // internalformat
xSquare, // width
ySquare, // height
0, // border, always 0 in OpenGL ES
format, // format
GL_UNSIGNED_BYTE, // type
0);
glTexSubImage2D(GL_TEXTURE_2D, // target
0, // level, 0 = base, no minimap,
0, //xoffset
0, //yoffset
image->width, // width
image->height, // height
format, // format
GL_UNSIGNED_BYTE, // type
image->pixel_data);
return;
}
glTexImage2D(GL_TEXTURE_2D, // target
0, // level, 0 = base, no minimap,
internalFormat, // internalformat
image->width, // width
image->height, // height
0, // border, always 0 in OpenGL ES
format, // format
GL_UNSIGNED_BYTE, // type
image->pixel_data);
}