diff options
| -rw-r--r-- | engines/sci/engine/kgraphics.cpp | 52 |
1 files changed, 50 insertions, 2 deletions
diff --git a/engines/sci/engine/kgraphics.cpp b/engines/sci/engine/kgraphics.cpp index 4727694729..cb1a4794b8 100644 --- a/engines/sci/engine/kgraphics.cpp +++ b/engines/sci/engine/kgraphics.cpp @@ -1288,8 +1288,56 @@ reg_t kPlayVMD(EngineState *s, int argc, reg_t *argv) { g_sci->_gfxCursor->kernelShow(); break; case 1: - // Unknown. Called with 5 extra integer parameterrs - // (e.g. 174, 95, 20, 0, 55, 236) + { + // Set VMD parameters. Called with a maximum of 5 parameters: + // + // x, y, flags, gammaBoost, gammaFirst, gammaLast + // + // Flags are as follows: + // bit 0 doubled + // bit 1 "drop frames"? + // bit 2 insert black lines + // bit 3 unknown + // bit 4 gamma correction + // bit 5 hold black frame + // bit 6 hold last frame + // bit 7 unknown + // bit 8 stretch + + // gammaBoost boosts palette colors in the range gammaFirst to gammaLast, but + // only if bit 4 in flags is set. Percent value such that 100% = no amplification + // These three parameters are optional if bit 4 is clear. + // Also note that the x, y parameters play subtle games if used with subfx 21. + + int flags = argv[3].offset; + Common::String flagspec; + + if (flags & 1) + flagspec += "doubled "; + if (flags & 2) + flagspec += "dropframes "; + if (flags & 4) + flagspec += "blacklines "; + if (flags & 8) + flagspec += "bit3 "; + if (flags & 16) + flagspec += "gammaboost "; + if (flags & 32) + flagspec += "holdblack "; + if (flags & 64) + flagspec += "holdlast "; + if (flags & 128) + flagspec += "bit7 "; + if (flags & 256) + flagspec += "stretch"; + + warning("VMDFlags: %s", flagspec.c_str()); + warning("x, y: %d, %d", argv[1].offset, argv[2].offset); + + if (argc > 4) + warning("gammaBoost: %d%% between palette entries %d and %d", argv[4].offset, argv[5].offset, argv[6].offset); + break; + } case 6: // Play, perhaps? Or stop? This is the last call made, and takes no extra parameters case 14: |