bool LightGrid::createTLITexture()
{
/* Create new buffer texture */
STextureCreationFlags CreationFlags;
{
CreationFlags.Size = 128;//1;
CreationFlags.Format = PIXELFORMAT_GRAYALPHA;
CreationFlags.HWFormat = HWTEXFORMAT_INT32;
CreationFlags.BufferType = IMAGEBUFFER_UBYTE;//!!!IMAGEBUFFER_INT
CreationFlags.Type = TEXTURE_BUFFER;
}
TLITexture_ = GlbRenderSys->createTexture(CreationFlags);
#if 1//!!!
ImageBuffer* buf = TLITexture_->getImageBuffer();
u32* rawbuf = reinterpret_cast<u32*>(buf->getBuffer());
for (u32 i = 0; i < 50; ++i)
{
if (i > 25)
*(rawbuf++) = 100;
else
*(rawbuf++) = i;
*(rawbuf++) = 0;
}
TLITexture_->updateImageBuffer();
#endif
//...
return true;
}
void ImageBuffer::warpPerlin(Perlin &p)
{
// Make a copy of the current image buffer. This is used to preserve the original texture while the current texture is warped.
ImageBuffer *newBuf = new ImageBuffer(_width, _height);
memcpy(newBuf->getBuffer(), buffer, _width*_height*3*sizeof(float));
for(int row=0; row<_height; row++) for(int col=0; col<_width; col++)
{
// Make some noise at current pixel
float x = (float)col/_width;
float y = (float)row/_height;
//float noise = p.noise(x,y,0.0f)*0.13f;
float noise = 0.0f;
vector<float> *octavesNoise = p.noise(x,y,0.0f);
vector<float>::iterator i = octavesNoise->begin();
while(i != octavesNoise->end())
{
noise += *i;
i++;
}
delete octavesNoise;
noise *= 0.13f;
// Find noisey pixel position. If noise pushes pixel position beyond image dimension, wrap around.
int noiseCol = static_cast<int>(col + _width*noise);
if(noiseCol > _width-1) noiseCol -= _width;
else if(noiseCol < 0) noiseCol += _width;
int noiseRow = static_cast<int>(row + _height*noise);
if(noiseRow > _height-1) noiseRow -= _height;
else if(noiseRow < 0) noiseRow += _height;
// Set noisy pixel position from copied buffer to current buffer
setPixel( row, col, newBuf->getPixel(_height-1-noiseRow, noiseCol) );
}
delete newBuf;
}