public void Load(uint address, uint mode, uint paletteCount)
{
// Format:
// 00 16-bit BGR 5650
// 01 16-bit ABGR 5551
// 10 16-bit ABGR 4444
// 11 32-bit ABGR 8888
_format = mode & 0x3;
_shift = ( int )((mode >> 2) & 0x1F);
_mask = (mode >> 8) & 0xFF;
_start = ((mode >> 16) & 0x1F) * 16; // ??
this.Pointer = address;
if (address == 0x0)
{
return;
}
byte *tablePointer = _driver.MemorySystem.Translate(address);
fixed(byte *p = &_table[0])
{
switch (_format)
{
case 0:
this.Checksum = ColorOperations.DecodeBGR5650(tablePointer, p, paletteCount * 16);
break;
case 1:
this.Checksum = ColorOperations.DecodeABGR5551(tablePointer, p, paletteCount * 16);
break;
case 2:
this.Checksum = ColorOperations.DecodeABGR4444(tablePointer, p, paletteCount * 16);
break;
case 3:
this.Checksum = ColorOperations.DecodeABGR8888(tablePointer, p, paletteCount * 8);
break;
}
// Checksum so that we can tell if it changed
//uint* cp = ( uint* )tablePointer;
//uint checksum = 0;
//for( int n = 0; n < ( entryCount * entryWidth ); n++ )
// checksum += *( cp++ );
//if( this.Checksum != checksum )
//{
// Checksums don't match! Invalidate all CLUT textures!
/*LLEntry<TextureEntry*>* e = context->TextureCache->GetEnumerator();
* while( e != NULL )
* {
* LLEntry<TextureEntry*>* next = e->Next;
* if( ( e->Value->PixelStorage & 0x4 ) == 0x4 )
* {
* // Check to see if it was from this clut
* if( e->Value->ClutPointer == context->ClutPointer )
* {
* // Kill it!
* GLuint freeIds[] = { e->Value->TextureID };
* glDeleteTextures( 1, freeIds );
* context->TextureCache->Remove( ( uint )e->Value->Address );
* }
* }
* e = next;
* }*/
//context->TextureCache->Clear();
//}
//this.Checksum = checksum;
}
}
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);
}