/// <summary>
/// Sets the appropriate rasterStructNode info values based on the width, height and pixel format of the texture.
/// </summary>
/// <param name="width">Width of the texture.</param>
/// <param name="height">Height of the texture.</param>
/// <param name="pixelFormat">PS2 pixel format of the given texture data.</param>
private void CreateRasterInfo(int width, int height, PS2PixelFormat pixelFormat)
{
Width = width;
Height = height;
Depth = PS2PixelFormatHelper.GetPixelFormatDepth(pixelFormat);
Format = GetRasterFormatFromDepth(Depth);
Tex0Register = new Tex0Register(pixelFormat, width, height);
Tex1Register = new Tex1Register(); // default settings
int texSize = width * height;
if (texSize < 16384) // because yes
{
Tex1Register.MaxMipLevel = 7;
Tex1Register.MipMinFilter = PS2FilterMode.None;
if (texSize <= 4096)
{
Tex1Register.MipMaxFilter = PS2FilterMode.None;
}
else
{
Tex1Register.MipMaxFilter = PS2FilterMode.Nearest;
}
}
MipTBP1Register = new MipTbpRegister(); // default settings
MipTBP2Register = new MipTbpRegister(); // default settings
TexelDataLength = (uint)PS2PixelFormatHelper.GetTexelDataSize(pixelFormat, width, height);
// Add image header size to the length if there is one
if (Format.HasFlagUnchecked(RwRasterFormats.HasHeaders))
{
TexelDataLength += PS2StandardImageHeader.Size;
}
PaletteDataLength = 0; // set to 0 if there's no palette present
// division by 2 might only apply for 8 bit..
int transferWidth = width / 2;
int transferHeight = height / 2;
GpuAlignedLength = (uint)(transferWidth * transferHeight);
// Calculate the palette data length for indexed textures
if (Depth == 4 || Depth == 8)
{
int numColors = 256;
if (Depth == 4)
{
numColors = 16;
}
PaletteDataLength = (uint)(numColors * 4);
// division by 4 might only apply for 8 bit..
GpuAlignedLength += PaletteDataLength / 4;
// Add image header size to the length if there is one
if (Format.HasFlagUnchecked(RwRasterFormats.HasHeaders))
{
PaletteDataLength += PS2StandardImageHeader.Size;
}
}
// align to pages of 2048
GpuAlignedLength = (uint)AlignmentHelper.Align(GpuAlignedLength, 2048);
}
