Pica: Implement stencil testing.

This commit is contained in:
Tony Wasserka 2015-05-21 16:51:31 +02:00
parent 302e9a20f3
commit 5e79706db2
3 changed files with 199 additions and 13 deletions

View file

@ -208,7 +208,32 @@ inline void EncodeD24(u32 value, u8* bytes) {
* @param bytes Pointer where to store the encoded value
*/
inline void EncodeD24S8(u32 depth, u8 stencil, u8* bytes) {
*reinterpret_cast<u32_le*>(bytes) = (stencil << 24) | depth;
bytes[0] = depth & 0xFF;
bytes[1] = (depth >> 8) & 0xFF;
bytes[2] = (depth >> 16) & 0xFF;
bytes[3] = stencil;
}
/**
* Encode a 24 bit depth value as D24X8 format (32 bits per pixel with 8 bits unused)
* @param depth 24 bit source depth value to encode
* @param bytes Pointer where to store the encoded value
* @note unused bits will not be modified
*/
inline void EncodeD24X8(u32 depth, u8* bytes) {
bytes[0] = depth & 0xFF;
bytes[1] = (depth >> 8) & 0xFF;
bytes[2] = (depth >> 16) & 0xFF;
}
/**
* Encode an 8 bit stencil value as X24S8 format (32 bits per pixel with 24 bits unused)
* @param stencil 8 bit source stencil value to encode
* @param bytes Pointer where to store the encoded value
* @note unused bits will not be modified
*/
inline void EncodeX24S8(u8 stencil, u8* bytes) {
bytes[3] = stencil;
}
} // namespace