Determines the active channels used for a given format See CMP_AnalysisData for more details on the bits set
| 84 | // Determines the active channels used for a given format |
| 85 | // See CMP_AnalysisData for more details on the bits set |
| 86 | CMP_UINT CMP_API CMP_getFormat_nChannels(CMP_FORMAT format) |
| 87 | { |
| 88 | CMP_UINT RGBAChannels; |
| 89 | |
| 90 | switch (format) |
| 91 | { |
| 92 | case CMP_FORMAT_ATI1N: |
| 93 | case CMP_FORMAT_BC4: |
| 94 | case CMP_FORMAT_BC4_S: // All channels are used and equal, Red is used as active channel |
| 95 | RGBAChannels = 0b0001; // R |
| 96 | break; |
| 97 | case CMP_FORMAT_ATI2N_XY: |
| 98 | case CMP_FORMAT_BC5_S: |
| 99 | case CMP_FORMAT_BC5: // Only Red & Green channels active |
| 100 | RGBAChannels = 0b0011; // GR |
| 101 | break; |
| 102 | default: |
| 103 | RGBAChannels = 0b0111; // BGR , alpha skipped user can set this after |
| 104 | break; |
| 105 | } |
| 106 | |
| 107 | return RGBAChannels; |
| 108 | } |
| 109 | |
| 110 | CMP_INT CMP_API CMP_CalcMinMipSize(CMP_INT nHeight, CMP_INT nWidth, CMP_INT MipsLevel) |
| 111 | { |
no outgoing calls