| private EmitHeader ( int offset, int width, int height ) : int | ||
| offset | int | |
| width | int | |
| height | int | |
| return | int | |
public static int generateGradient(int heapOffset)
{
const int width = 8;
const int height = 8;
const int xScale = 256 / width;
const int yScale = 256 / height;
const int bytesPerPixel = Targa.BPP / 8;
heapOffset = Targa.EmitHeader(heapOffset, width, height);
for (int y = 0; y < height; y++)
{
int rowOffset = heapOffset + ((width * bytesPerPixel) * y);
for (int x = 0; x < width; x++)
{
int pixelOffset = rowOffset + (x * bytesPerPixel);
U8[pixelOffset, 0] = (byte)(y * yScale);
U8[pixelOffset, 1] = 0;
U8[pixelOffset, 2] = (byte)(x * xScale);
}
}
const int length = (width * height * bytesPerPixel);
SetStdout("gradient.tga");
Write(heapOffset, length);
return(heapOffset + length);
}
public static int test()
{
var offset = Targa.EmitHeader(0, width, height);
byte *dest = &U8.Base[offset];
byte *src = &dest[numBytes];
rasterize(blend50, src, dest);
SetStdout("blendfunc.tga");
Write(offset, numBytes);
return(offset + numBytes);
}
