public void Add(MGLTexture texture)
{
if (_values.Count > Maximum)
{
// Evict last entry
MGLTexture dead = _values.Tail;
_values.Remove(_values.TailEntry);
Gl.glDeleteTextures(1, ref dead.TextureID);
}
_values.InsertAtHead(texture);
}
private void SetTextures()
{
MGLTextureInfo info = _ctx.Textures[0];
if (info.Address == 0)
{
if (_currentTextureId != 0)
{
Gl.glBindTexture(Gl.GL_TEXTURE_2D, 0);
}
_currentTextureId = 0;
return;
}
// Check valid
bool valid = !((info.Address == 0x0) || (info.LineWidth == 0x0) || (info.Width == 0) || (info.Height == 0));
// TODO: from framebuffer? - make sure this check is still valid!
valid = valid && !((info.Address == 0x0400000) && (info.LineWidth == 0x4) && (info.Width == 0x2) && (info.Height == 0x2));
// Check cache
uint checksum;
MGLTexture texture = _ctx.TextureCache.Find(info, out checksum);
// If found in cache, set and return
if (texture != null)
{
if (_currentTextureId != texture.TextureID)
{
Gl.glBindTexture(Gl.GL_TEXTURE_2D, texture.TextureID);
_currentTextureId = texture.TextureID;
// HACK: required to get textures to work right - does something after the binding so that things show up
Gl.glTexParameteri(Gl.GL_TEXTURE_2D, Gl.GL_TEXTURE_MIN_FILTER, _ctx.TextureMinFilter);
//Gl.glTexParameteri( Gl.GL_TEXTURE_2D, Gl.GL_TEXTURE_MAG_FILTER, Gl.GL_NEAREST );
// TODO: set all
_defaultProgram.IsDirty = true;
}
return;
}
// Not found - create
texture = MGLTexture.LoadTexture(this, _ctx, info, checksum);
_currentTextureId = texture.TextureID;
_ctx.TextureCache.Add(texture);
// TODO: set all
_defaultProgram.IsDirty = true;
}
public MGLTexture Find(MGLTextureInfo info, out uint checksum)
{
checksum = 0;
LinkedListEntry <MGLTexture> e = _values.HeadEntry;
while (e != null)
{
if (e.Value.Address == info.Address)
{
// Check to make sure it's right
bool match =
(e.Value.Width == info.Width) &&
(e.Value.Height == info.Height) &&
(e.Value.LineWidth == info.LineWidth) &&
(e.Value.PixelStorage == info.PixelStorage) &&
(((( int )e.Value.PixelStorage & 0x4) == 0x4) ? (e.Value.ClutChecksum == _ctx.Clut.Checksum) : true);
if (match == true)
{
// Cookie check
//uint cookie = *((uint*)
if (match == true)
{
byte *textureAddress = _driver.MemorySystem.Translate(info.Address);
checksum = MGLTexture.CalculateChecksum(textureAddress, info.Width, info.Height, info.PixelStorage);
match = (checksum == e.Value.Checksum);
}
}
if (match == true)
{
// Match - move to head
_values.MoveToHead(e);
return(e.Value);
}
else
{
// Mismatch - free
Gl.glDeleteTextures(1, ref e.Value.TextureID);
_driver.InvalidateCurrentTexture();
_values.Remove(e);
return(null);
}
}
e = e.Next;
}
return(null);
}
public static MGLTexture LoadTexture(MGLDriver driver, MGLContext ctx, MGLTextureInfo info, uint checksum)
{
uint width = info.Width;
uint lineWidth = info.LineWidth;
uint height = info.Height;
MGLTexture texture = new MGLTexture();
texture.PixelStorage = info.PixelStorage;
texture.Address = info.Address;
texture.LineWidth = lineWidth;
texture.Width = width;
texture.Height = height;
texture.Checksum = checksum;
texture.ClutPointer = ctx.Clut.Pointer;
texture.ClutChecksum = ctx.Clut.Checksum;
int textureId;
Gl.glGenTextures(1, out textureId);
Gl.glBindTexture(Gl.GL_TEXTURE_2D, textureId);
texture.TextureID = textureId;
byte * address = driver.MemorySystem.Translate(info.Address);
TextureFormat format = TextureFormats[( int )info.PixelStorage];
uint size = lineWidth * height * format.Size;
fixed(byte *unswizzleBuffer = &_unswizzleBuffer[0])
fixed(byte *decodeBuffer = &_decodeBuffer[0])
{
bool needRowLength = false;
byte *buffer = address;
if (ctx.TexturesSwizzled == true)
{
buffer = Unswizzle(format, buffer, unswizzleBuffer, lineWidth, height);
}
switch (texture.PixelStorage)
{
case TexturePixelStorage.BGR5650:
texture.Checksum = ColorOperations.DecodeBGR5650(buffer, decodeBuffer, lineWidth * height);
buffer = decodeBuffer;
break;
case TexturePixelStorage.ABGR5551:
texture.Checksum = ColorOperations.DecodeABGR5551(buffer, decodeBuffer, lineWidth * height);
buffer = decodeBuffer;
break;
case TexturePixelStorage.ABGR4444:
texture.Checksum = ColorOperations.DecodeABGR4444(buffer, decodeBuffer, lineWidth * height);
buffer = decodeBuffer;
break;
case TexturePixelStorage.ABGR8888:
// Pass through
needRowLength = true;
break;
case TexturePixelStorage.Indexed4:
ctx.Clut.Decode4(buffer, decodeBuffer, width, height, lineWidth);
buffer = decodeBuffer;
break;
case TexturePixelStorage.Indexed8:
ctx.Clut.Decode8(buffer, decodeBuffer, width, height, lineWidth);
buffer = decodeBuffer;
break;
case TexturePixelStorage.Indexed16:
ctx.Clut.Decode16(buffer, decodeBuffer, width, height, lineWidth);
buffer = decodeBuffer;
break;
case TexturePixelStorage.Indexed32:
ctx.Clut.Decode32(buffer, decodeBuffer, width, height, lineWidth);
buffer = decodeBuffer;
break;
case TexturePixelStorage.DXT1:
case TexturePixelStorage.DXT3:
case TexturePixelStorage.DXT5:
// Not yet implemented
Debug.Assert(false);
break;
}
// TODO: eliminate these
//Gl.glPixelStorei( Gl.GL_UNPACK_ALIGNMENT, 4 );
//if( needRowLength == true )
// Gl.glPixelStorei( Gl.GL_UNPACK_ROW_LENGTH, ( int )lineWidth );
//else
// Gl.glPixelStorei( Gl.GL_UNPACK_ROW_LENGTH, ( int )width );
Gl.glTexImage2D(Gl.GL_TEXTURE_2D, 0, Gl.GL_RGBA8,
( int )width, ( int )height,
0, Gl.GL_RGBA, Gl.GL_UNSIGNED_BYTE,
( IntPtr )buffer);
// Set cookie
//texture.CookieOriginal = *( ( uint* )address );
//texture.Cookie = ( uint )textureId;
//*( ( uint* )address ) = ( uint )textureId;
// Calculate checksum if needed
if (texture.Checksum == 0)
{
texture.Checksum = MGLTexture.CalculateChecksum(address, width, height, texture.PixelStorage);
}
}
return(texture);
}