public unsafe bool Bake(PipelineBakeContext context)
{
Console.WriteLine("Art.Bake: " + context.ContentPath);
float umin = 0;
float vmin = 0;
float umax = 1;
float vmax = 1;
var path = context.Depends["source"];
var imageBuffer = ImageLoading.LoadImage(path);
//TODO: we can only handle certain input formats here (no compressed formats)
//but we can output any format (after we crop it)
int width = imageBuffer.Width;
int height = imageBuffer.Height;
int physwidth = width;
int physheight = height;
int ox = 0, oy = 0;
//NOTE: EVERYTHING BELOW IS EXPERIMENTAL. ITS A TOTAL MESS
//TODO - apply art-specific operations (cropping, etc.)
//TODO - make controllable
//TODO - handle errors
var conversionResult = imageBuffer.ConvertToAlphaProcessableFormat(false);
bool doTrim = true;
if (conversionResult.ConversionResult == ConversionResult.Error_InputFormatHasNoAlpha)
{
doTrim = false;
}
if (doTrim)
{
//accept the converted image
imageBuffer = conversionResult.ResultImage;
var alphaTrimResult = imageBuffer.AlphaTrim();
imageBuffer = alphaTrimResult.ResultImage;
ox = alphaTrimResult.x;
oy = alphaTrimResult.y;
physwidth = alphaTrimResult.Width;
physheight = alphaTrimResult.Height;
}
bool doPadPow2 = true;
if (!imageBuffer.IsAlphaProcessableFormat())
{
doPadPow2 = false;
}
if (doPadPow2)
{
int widthRound = PipelineMath.TextureUptoPow2(physwidth);
int heightRound = PipelineMath.TextureUptoPow2(physheight);
if (widthRound != physwidth || heightRound != physheight)
{
imageBuffer = imageBuffer.ExpandDownRight(widthRound, heightRound);
}
}
var fmtAttribute = context.Attributes.FirstOrDefault(a => a is TextureFormatAttribute);
if (fmtAttribute != null)
{
var toFormat = ((TextureFormatAttribute)fmtAttribute).Format;
ImageConversionContext imageContext = new ImageConversionContext();
imageContext.From = imageBuffer;
imageContext.NewAlpha = 0xFF;
imageContext.ToFormat = toFormat;
ImageLoading.Convert(imageContext);
imageBuffer = imageContext.Output;
}
umax = (ox + physwidth) / imageBuffer.Width;
vmax = (oy + physheight) / imageBuffer.Height;
//the texture goes first...
var textureBakingContext = new PipelineConnector_TextureBaking()
{
Image = imageBuffer,
Writer = context.BakedWriter
};
context.PipelineConnector.BakeTexture(textureBakingContext);
//..then art-specific stuff
context.BakedWriter.Write(width);
context.BakedWriter.Write(height);
context.BakedWriter.Write(ox);
context.BakedWriter.Write(oy);
context.BakedWriter.Write(umin);
context.BakedWriter.Write(vmin);
context.BakedWriter.Write(umax);
context.BakedWriter.Write(vmax);
return(true);
}
public static void Convert(ImageConversionContext context)
{
if (context.From.Format == context.ToFormat)
{
return;
}
var ret = new ImageBuffer();
ret.Format = context.ToFormat;
int width = ret.Width = context.From.Width;
int height = ret.Height = context.From.Height;
//reminder: we should intermediate-convert where reasonable to a standard format (i.e. RGBA8) so that we have fewer permutations to code
//(needs to be done in a better way than this)
//we can end up with permutations for the basic formats anyway. it will be more rare stuff that's obviously ridiculous to do without the intermediate stage
if (context.From.Format == TextureFormat.BGRA8 && context.ToFormat == TextureFormat.RGB8)
{
var intermediateContext = new ImageConversionContext();
intermediateContext.From = context.From;
intermediateContext.ToFormat = TextureFormat.RGBA8;
Convert(intermediateContext);
context.From = intermediateContext.Output;
}
var src = context.From.Data;
if (context.From.Format == TextureFormat.R8 && context.ToFormat == TextureFormat.RGBA8)
{
context.Output = ret;
byte[] dst = ret.Data = new byte[width * height * 4];
uint[] palette = context.From.Palette;
for (int didx = 0, sidx = 0, y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
uint c = palette[src[sidx++]];
dst[didx++] = (byte)(c >> 0);
dst[didx++] = (byte)(c >> 8);
dst[didx++] = (byte)(c >> 16);
dst[didx++] = (byte)(c >> 24);
}
}
}
if (context.From.Format == TextureFormat.BGRA8 && context.ToFormat == TextureFormat.RGBA8)
{
context.Output = ret;
byte[] dst = ret.Data = new byte[width * height * 4];
for (int didx = 0, sidx = 0, y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
byte b = (byte)(src[sidx++]);
byte g = (byte)(src[sidx++]);
byte r = (byte)(src[sidx++]);
byte a = (byte)(src[sidx++]);
dst[didx++] = r;
dst[didx++] = g;
dst[didx++] = b;
dst[didx++] = a;
}
}
}
if (context.From.Format == TextureFormat.BGR8 && context.ToFormat == TextureFormat.RGB8)
{
context.Output = ret;
byte[] dst = ret.Data = new byte[width * height * 3];
for (int didx = 0, sidx = 0, y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
byte b = (byte)(src[sidx++]);
byte g = (byte)(src[sidx++]);
byte r = (byte)(src[sidx++]);
dst[didx++] = r;
dst[didx++] = g;
dst[didx++] = b;
}
}
}
if (context.From.Format == TextureFormat.BGR8 && context.ToFormat == TextureFormat.RGBA8)
{
context.Output = ret;
byte a = context.NewAlpha;
byte[] dst = ret.Data = new byte[width * height * 4];
for (int didx = 0, sidx = 0, y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
byte b = (byte)(src[sidx++]);
byte g = (byte)(src[sidx++]);
byte r = (byte)(src[sidx++]);
dst[didx++] = r;
dst[didx++] = g;
dst[didx++] = b;
dst[didx++] = a;
}
}
}
if (context.From.Format == TextureFormat.RGBA8 && context.ToFormat == TextureFormat.RGB8)
{
context.Output = ret;
byte[] dst = ret.Data = new byte[width * height * 3];
for (int didx = 0, sidx = 0, y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
byte r = (byte)(src[sidx++]);
byte g = (byte)(src[sidx++]);
byte b = (byte)(src[sidx++]);
sidx++;
dst[didx++] = r;
dst[didx++] = g;
dst[didx++] = b;
}
}
}
} //Convert()
