internal TextureResource(string name, BitmapSurface surface)
: base(name, true)
{
_width = surface.Width;
_height = surface.Height;
_pixels = surface.Pixels;
}
private void load(AtlasNode root)
{
// heavily based on
// http://www.blackpawn.com/texts/lightmaps/default.html
// basically it uses a kd-tree to pack the lightmaps
// TODO: this shoudln't be hardcoded!!
int outputWidth = 512;
int outputHeight = 512;
_packedTexture = new BitmapSurface(512, 512, null);
root.AddToBitmap(_packedTexture);
// create the packed rectangles
root.UpdateRectList(_packedTextureRects);
// now we have the rects, but they need to be converted from pixel coords
/* for (int i = 0; i < _packedTextureRects.Length; i++)
* {
* Rect r = _packedTextureRects[i];
* r.X /= outputWidth;
* r.Y /= outputHeight;
* r.Width /= outputWidth;
* r.Height /= outputHeight;
*
* _packedTextureRects[i] = r;
* }*/
Utils.WriteTga("lightmap.tga", _packedTexture.Pixels, 512, 512);
}
public Resource.Resource Load(string name, Resource.ResourceManager content)
{
try
{
if (name.IndexOf('.') < 0)
{
name += ".BMP";
}
System.IO.Stream stream = FileSystem.Open(name);
BitmapSurface surface = new BitmapSurface(stream, BitmapSurface.SourceType.Unknown, true);
Resource.Resource resource = RendererManager.CurrentRenderer.CreateTexture(name, surface, true, true);
stream.Close();
return(resource);
}
catch (System.IO.FileNotFoundException)
{
Logger.WriteError("Unable to find texture: {0}", name);
return(RendererManager.CurrentRenderer.ErrorTexture);
}
}
protected void loadFace(Stream stream, out byte[] pixels, out int width, out int height)
{
BitmapSurface face = new BitmapSurface(stream);
pixels = face.Pixels;
width = face.Width;
height = face.Height;
}
internal static void AddSun(Math.Vector3 direction, Math.Vector3 color, float radius,
BitmapSurface front, BitmapSurface back, BitmapSurface left, BitmapSurface right, BitmapSurface up, bool memory)
{
// process each surface of the skybox and figure out how much "sun" is in that texel
addSunToSurface(direction, color, radius, new Math.Vector3(1.0f, 0, 0), Math.Vector3.Up, front, memory);
addSunToSurface(direction, color, radius, new Math.Vector3(-1.0f, 0, 0), Math.Vector3.Up, back, memory);
addSunToSurface(direction, color, radius, new Math.Vector3(0, 0, 1.0f), Math.Vector3.Up, right, memory);
addSunToSurface(direction, color, radius, new Math.Vector3(0, 0, -1.0f), Math.Vector3.Up, left, memory);
addSunToSurface(direction, color, radius, new Math.Vector3(0, 1.0f, 0), Math.Vector3.Forward, up, memory);
}
public static void Copy(int destX, int destY, BitmapSurface destSurface,
int sourceX, int sourceY, int sourceWidth, int sourceHeight, BitmapSurface srcSurface)
{
for (int y = 0; y < sourceHeight; y++)
{
int destinationIndex = ((destY + y) * destSurface.Width + destX) * 4;
Array.Copy(srcSurface.Pixels, ((sourceY + y) * srcSurface.Width + sourceX) * 4, destSurface.Pixels,
destinationIndex, sourceWidth * 4);
}
}
private static Graphics.SkyBox loadSkybox(Game.ScnResource scn, bool addSun)
{
if (string.IsNullOrEmpty(scn.SkyboxLeft) == false &&
string.IsNullOrEmpty(scn.SkyboxRight) == false &&
string.IsNullOrEmpty(scn.SkyboxFront) == false &&
string.IsNullOrEmpty(scn.SkyboxBack) == false &&
string.IsNullOrEmpty(scn.SkyboxUp) == false &&
string.IsNullOrEmpty(scn.SkyboxDown) == false)
{
System.IO.Stream frontStream = FileSystem.Open(scn.SkyboxFront + ".BMP");
System.IO.Stream backStream = FileSystem.Open(scn.SkyboxBack + ".BMP");
System.IO.Stream leftStream = FileSystem.Open(scn.SkyboxLeft + ".BMP");
System.IO.Stream rightStream = FileSystem.Open(scn.SkyboxRight + ".BMP");
System.IO.Stream upStream = FileSystem.Open(scn.SkyboxUp + ".BMP");
Graphics.BitmapSurface fronts = new Graphics.BitmapSurface(frontStream);
Graphics.BitmapSurface backs = new Graphics.BitmapSurface(backStream);
Graphics.BitmapSurface lefts = new Graphics.BitmapSurface(leftStream);
Graphics.BitmapSurface rights = new Graphics.BitmapSurface(rightStream);
Graphics.BitmapSurface ups = new Graphics.BitmapSurface(upStream);
Graphics.BitmapSurface downs = null;
try
{
System.IO.Stream downStream = FileSystem.Open(scn.SkyboxDown + ".BMP");
downs = new Graphics.BitmapSurface(downStream);
downStream.Close();
}
catch (System.IO.FileNotFoundException)
{
downs = lefts;
}
frontStream.Close();
backStream.Close();
leftStream.Close();
rightStream.Close();
upStream.Close();
Gk3Main.Graphics.SkyBox sb = new Gk3Main.Graphics.SkyBox(scn.Name + "_skybox", fronts, backs,
lefts, rights, ups, downs, Utils.DegreesToRadians(scn.SkyboxAzimuth));
if (addSun)
{
Math.Vector3 dir = new Math.Vector3(0.4873306f, -0.8727542f, 0.02844055f);
//Gk3Main.Graphics.SkyBox.AddSun(dir, new Math.Vector3(1.0f, 0, 0), 0.025f, fronts, backs, lefts, rights, ups, false);
sb.AddSun(dir, new Math.Vector3(1.0f, 0, 0), false);
}
return(sb);
}
return(null);
}
public void MergeAlpha(BitmapSurface alphaSurface)
{
if (alphaSurface == null || alphaSurface.Width != _width || alphaSurface.Height != _height)
{
throw new ArgumentException();
}
// merge color and alpha info
for (int i = 0; i < _width * _height; i++)
{
_pixels[i * 4 + 3] = alphaSurface.Pixels[i * 4 + 0];
}
}
private int testFit(BitmapSurface surface)
{
int width = surface.Width + Padding * 2;
int height = surface.Height + Padding * 2;
if (width > Rectangle.Width ||
height > Rectangle.Height)
{
return(1); // too big
}
if (width == Rectangle.Width &&
height == Rectangle.Height)
{
return(0); // just right
}
return(-1); // texture fits with space left over
}
public LightmapResource(string name, System.IO.Stream stream)
: base(name, true)
{
System.IO.BinaryReader reader = new System.IO.BinaryReader(stream);
uint header = reader.ReadUInt32();
uint numMaps = reader.ReadUInt32();
_maps = new BitmapSurface[numMaps];
for (int i = 0; i < numMaps; i++)
{
_maps[i] = new BitmapSurface(stream, BitmapSurface.SourceType.Unknown, false);
}
GenTextureAtlas();
}
public void AddToBitmap(BitmapSurface bitmap)
{
if (Surface != null)
{
// top
BitmapSurface.Copy((int)Rectangle.X + 1, (int)Rectangle.Y, bitmap, 0, 0, Surface.Width, 1, Surface);
// bottom
BitmapSurface.Copy((int)Rectangle.X + 1, (int)(Rectangle.Y + Rectangle.Height) - 1, bitmap, 0, Surface.Height - 1, Surface.Width, 1, Surface);
//left
BitmapSurface.Copy((int)Rectangle.X, (int)Rectangle.Y + 1, bitmap, 0, 0, 1, Surface.Height, Surface);
// right
BitmapSurface.Copy((int)(Rectangle.X + Rectangle.Width) - 1, (int)Rectangle.Y + 1, bitmap, Surface.Width - 1, 0, 1, Surface.Height, Surface);
// center
BitmapSurface.Copy((int)Rectangle.X + 1, (int)Rectangle.Y + 1, bitmap, 0, 0, Surface.Width, Surface.Height, Surface);
// upper left
BitmapSurface.Copy((int)Rectangle.X, (int)Rectangle.Y, bitmap, 0, 0, 1, 1, Surface);
// upper right
BitmapSurface.Copy((int)(Rectangle.X + Rectangle.Width) - 1, (int)Rectangle.Y, bitmap, Surface.Width - 1, 0, 1, 1, Surface);
// lower left
BitmapSurface.Copy((int)Rectangle.X, (int)(Rectangle.Y + Rectangle.Height) - 1, bitmap, 0, Surface.Height - 1, 1, 1, Surface);
// lower right
BitmapSurface.Copy((int)(Rectangle.X + Rectangle.Width) - 1, (int)(Rectangle.Y + Rectangle.Height) - 1, bitmap, Surface.Width - 1, Surface.Height - 1, 1, 1, Surface);
}
if (Child1 != null)
{
Child1.AddToBitmap(bitmap);
}
if (Child2 != null)
{
Child2.AddToBitmap(bitmap);
}
}
public SkyBox(string name, BitmapSurface front, BitmapSurface back, BitmapSurface left, BitmapSurface right,
BitmapSurface up, BitmapSurface down, float azimuth)
{
_cubeMap = Graphics.RendererManager.CurrentRenderer.CreateCubeMap(name, front, back, left, right, up, down);
_azimuth = azimuth;
}
private static void addSunToSurface(Math.Vector3 direction, Math.Vector3 color, float radius,
Math.Vector3 faceNormal, Math.Vector3 faceUp, BitmapSurface faceSurface, bool memory)
{
Math.Vector3 faceRight = faceNormal.Cross(faceUp);
float t = -0.5f / faceNormal.Dot(-direction);
if (t > 0)
{
return; // the sun never hits this plane
}
Math.Vector3 sunP = -direction * t;
for (int y = 0; y < faceSurface.Height; y++)
{
for (int x = 0; x < faceSurface.Width; x++)
{
// calc the distance from this pixel to the sun
float u = (float)x / faceSurface.Width - 0.5f;
float v = (float)y / faceSurface.Height - 0.5f;
Math.Vector3 texelP = faceUp * v + faceRight * u + -faceNormal * 0.5f;
float distance = Math.Vector3.Distance(texelP, sunP);
if (distance < radius)
{
if (!memory)
{
faceSurface.Pixels[(y * faceSurface.Width + x) * 4 + 0] = 255;
faceSurface.Pixels[(y * faceSurface.Width + x) * 4 + 1] = 0;
faceSurface.Pixels[(y * faceSurface.Width + x) * 4 + 2] = 0;
}
else
{
Color c = faceSurface.ReadColorAt(x, y);
uint ptr = (uint)c.R | ((uint)c.G << 8) | ((uint)c.B << 16) | ((uint)c.A << 24);
UIntPtr ptr2 = (UIntPtr)ptr;
unsafe
{
float *f = (float *)ptr2.ToPointer();
f[0] = color.X;
f[1] = color.Y;
f[2] = color.Z;
}
}
}
}
}
}
public AtlasNode Insert(BitmapSurface surface, int index)
{
AtlasNode newNode = null;
if (Child1 != null && Child2 != null)
{
// not on a leaf...
newNode = Child1.Insert(surface, index);
if (newNode != null)
{
return(newNode);
}
// no room? try the other child...
return(Child2.Insert(surface, index));
}
else
{
// we're on a leaf!
if (Surface != null)
{
return(null);
}
int fit = testFit(surface);
if (fit > 0)
{
return(null); // too big
}
if (fit == 0)
{
Surface = surface;
Index = index;
return(this);
}
// guess we need to split this node
Child1 = new AtlasNode();
Child2 = new AtlasNode();
int paddedWidth = surface.Width + Padding * 2;
int paddedHeight = surface.Height + Padding * 2;
float dw = Rectangle.Width - paddedWidth;
float dh = Rectangle.Height - paddedHeight;
if (dw > dh)
{
Child1.Rectangle = new Rect(Rectangle.X, Rectangle.Y,
paddedWidth, Rectangle.Height);
Child2.Rectangle = new Rect(Rectangle.X + paddedWidth + 1, Rectangle.Y,
Rectangle.Width - paddedWidth - 1, Rectangle.Height);
}
else
{
Child1.Rectangle = new Rect(Rectangle.X, Rectangle.Y,
Rectangle.Width, paddedHeight);
Child2.Rectangle = new Rect(Rectangle.X, Rectangle.Y + paddedHeight + 1,
Rectangle.Width, Rectangle.Height - paddedHeight - 1);
}
return(Child1.Insert(surface, index));
}
}
public static void CalculateLightmaps(LightmapSpecs specs)
{
if (_currentRoom != null && _currentLightmaps != null)
{
Radiosity.Init(new Radiosity.RenderDelegate(renderRadiosityCallback));
_calculatingRadiosity = true;
CurrentFilterMode = TextureFilterMode.None;
LightmapsEnabled = true;
CurrentShadeMode = ShadeMode.Flat;
DoubleLightmapValues = false;
Graphics.Camera originalCamera = CurrentCamera;
Graphics.Viewport originalViewport = Graphics.RendererManager.CurrentRenderer.Viewport;
RadiosityMaps radiosityMaps = _currentRoom.GenerateMemoryTextures(specs);
// generate the omni lights
_omniLightInfo = new List <OmniInfo>();
foreach (LightmapSpecs.OmniLight light in specs.OmniLights)
{
OmniInfo o;
o.Info = light;
Radiosity.GenerateOmniLight((int)light.Radius, light.Color, out o.MemTex, out o.AlphaMask);
_omniLightInfo.Add(o);
}
Graphics.RendererManager.CurrentRenderer.CullMode = Graphics.CullMode.None;
Graphics.TextureResource skyboxTop = Radiosity.GenerateMemoryTexture(16, 16, specs.SkyColor.X, specs.SkyColor.Y, specs.SkyColor.Z);
Graphics.TextureResource skyboxFront = Radiosity.GenerateMemoryTexture(16, 16, specs.SkyColor.X, specs.SkyColor.Y, specs.SkyColor.Z);
Graphics.TextureResource skyboxBack = Radiosity.GenerateMemoryTexture(16, 16, specs.SkyColor.X, specs.SkyColor.Y, specs.SkyColor.Z);
Graphics.TextureResource skyboxLeft = Radiosity.GenerateMemoryTexture(16, 16, specs.SkyColor.X, specs.SkyColor.Y, specs.SkyColor.Z);
Graphics.TextureResource skyboxRight = Radiosity.GenerateMemoryTexture(16, 16, specs.SkyColor.X, specs.SkyColor.Y, specs.SkyColor.Z);
Graphics.TextureResource skyboxBottom = Radiosity.GenerateMemoryTexture(16, 16, 0, 0, 0);
Graphics.BitmapSurface skyboxTopPixels = new Graphics.BitmapSurface(skyboxTop);
Graphics.BitmapSurface skyboxFrontPixels = new Graphics.BitmapSurface(skyboxFront);
Graphics.BitmapSurface skyboxBackPixels = new Graphics.BitmapSurface(skyboxBack);
Graphics.BitmapSurface skyboxLeftPixels = new Graphics.BitmapSurface(skyboxLeft);
Graphics.BitmapSurface skyboxRightPixels = new Graphics.BitmapSurface(skyboxRight);
Graphics.BitmapSurface skyboxBottomPixels = new Graphics.BitmapSurface(skyboxBottom);
// Graphics.SkyBox.AddSun(specs.SunDirection, specs.SunColor, 0.125f, skyboxFrontPixels, skyboxBackPixels, skyboxLeftPixels, skyboxRightPixels, skyboxTopPixels, true);
Graphics.SkyBox originalSkybox = _currentSkybox;
if (_currentSkybox != null)
{
_currentSkybox = new Graphics.SkyBox("box", skyboxFrontPixels, skyboxBackPixels, skyboxLeftPixels, skyboxRightPixels, skyboxTopPixels, skyboxBottomPixels, 0);
_currentSkybox.AddSun(specs.SunDirection, specs.SunColor, true);
}
Graphics.LightmapResource oldLightmaps = _currentLightmaps;
_currentLightmaps = radiosityMaps.CreateBigMemoryTexture(_currentLightmaps.Name);
_currentRoom.CalcRadiosityPass(_currentLightmaps, radiosityMaps);
Radiosity.Shutdown();
_currentRoom.FinalizeVertices(_currentLightmaps, true);
_currentLightmaps = radiosityMaps.ConvertToLightmap(_currentLightmaps.Name, 0.02f);
Graphics.RendererManager.CurrentRenderer.CullMode = Graphics.CullMode.CounterClockwise;
Graphics.RendererManager.CurrentRenderer.Viewport = originalViewport;
CurrentCamera = originalCamera;
_currentSkybox = originalSkybox;
_calculatingRadiosity = false;
}
}
internal LightmapResource(string name, int numMaps)
: base(name, true)
{
_maps = new BitmapSurface[numMaps];
}
