| 617 | } |
| 618 | |
| 619 | bool DDSFile::writeHeader( Stream &s ) |
| 620 | { |
| 621 | // Read the FOURCC |
| 622 | s.write( 4, "DDS " ); |
| 623 | |
| 624 | U32 tmp = 0; |
| 625 | |
| 626 | // Read the size of the header. |
| 627 | s.write( 124 ); |
| 628 | |
| 629 | // Read some flags... |
| 630 | U32 ddsdFlags = DDSDCaps | DDSDPixelFormat | DDSDWidth | DDSDHeight; |
| 631 | |
| 632 | if ( mFlags.test( CompressedData ) ) |
| 633 | ddsdFlags |= DDSDLinearSize; |
| 634 | else |
| 635 | ddsdFlags |= DDSDPitch; |
| 636 | |
| 637 | if ( mMipMapCount > 0 ) |
| 638 | ddsdFlags |= DDSDMipMapCount; |
| 639 | |
| 640 | s.write( ddsdFlags ); |
| 641 | |
| 642 | // Read height and width (always present) |
| 643 | s.write( mHeight ); |
| 644 | s.write( mWidth ); |
| 645 | |
| 646 | // Ok, some flags are set, so let's do some reading. |
| 647 | s.write( mPitchOrLinearSize ); |
| 648 | |
| 649 | // Do we need to read depth? If so, we are a volume texture! |
| 650 | s.write( mDepth ); |
| 651 | |
| 652 | // Deal with mips! |
| 653 | s.write( mMipMapCount ); |
| 654 | |
| 655 | // Deal with 11 DWORDS of reserved space (this reserved space brought to |
| 656 | // you by DirectDraw and the letters F and U). |
| 657 | for(U32 i=0; i<11; i++) |
| 658 | s.write( tmp ); // is this right? |
| 659 | |
| 660 | // Now we're onto the pixel format! |
| 661 | |
| 662 | // This is the size, in bits, |
| 663 | // of the pixel format data. |
| 664 | tmp = 32; |
| 665 | s.write( tmp ); |
| 666 | |
| 667 | U32 ddpfFlags; |
| 668 | |
| 669 | U32 fourCC = 0; |
| 670 | |
| 671 | if ( mFlags.test( CompressedData ) ) |
| 672 | { |
| 673 | ddpfFlags = DDPFFourCC; |
| 674 | if (mFormat == GFXFormatDXT1) |
| 675 | fourCC = FOURCC_DXT1; |
| 676 | if (mFormat == GFXFormatDXT3) |