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/*==LICENSE==*
CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
You can contact Cyan Worlds, Inc. by email legal@cyan.com
or by snail mail at:
Cyan Worlds, Inc.
14617 N Newport Hwy
Mead, WA 99021
*==LICENSE==*/
#ifndef plRenderLevel_inc
#define plRenderLevel_inc
class plRenderLevel
{
public:
// A renderlevel is [Major bits 32..8]|[Minor bits 7..0]
// The major render level is further broken into 3 ranges.
// Range [0x00..0xff] - Blend onto the frame buffer (before even opaque objects)
// Range [0x0100..0xffff] - Opaque and nearly opaque objects
// Range [0x010000..0xffffff] - For blending objects (typically sorted amongst each other)
// The minor bits denote a slight difference in draw order. For example, a decal wants
// to be drawn after the opaque object it is applied to, but hopefully not very long after.
// The avatar gets a render priority of kDefRendMajorLevel,kAvatarRendMinorLevel. This puts
// it in the group of normal opaque objects with no render dependencies, but with the maximum
// permitted minor level. So it will be drawn after the opaque background, and the opaque background's
// decals, but before the first thing with a render dependency on the background (e.g. plants).
// Removed kAvatarBlendRendMinorLevel, not being used anywhere. mf
enum {
kOpaqueMajorLevel = 0x0,
kFBMajorLevel = 0x1,
kDefRendMajorLevel = 0x2,
kBlendRendMajorLevel = 0x4,
kLateRendMajorLevel = 0x8
};
enum {
kMajorShift = 28
};
enum {
kDefRendMinorLevel = 0x00,
kOpaqueMinorLevel = 0x0,
kMinorLevelMask = ((1 << kMajorShift) - 1),
kAvatarRendMinorLevel = kMinorLevelMask-1
};
public:
plRenderLevel() { Set(kDefRendMajorLevel, kDefRendMinorLevel); }
plRenderLevel(UInt32 l) : fLevel(l) {}
plRenderLevel(UInt32 major, UInt32 minor) { Set(major, minor); }
int operator==(const plRenderLevel& l) const { return fLevel == l.fLevel; }
int operator!=(const plRenderLevel& l) const { return fLevel != l.fLevel; }
int operator>(const plRenderLevel& l) const { return fLevel > l.fLevel; }
int operator<(const plRenderLevel& l) const { return fLevel < l.fLevel; }
int operator>=(const plRenderLevel& l) const { return fLevel >= l.fLevel; }
int operator<=(const plRenderLevel& l) const { return fLevel <= l.fLevel; }
UInt32 Level() const { return fLevel; }
UInt32 Minor() const { return UInt32(fLevel & kMinorLevelMask); }
UInt32 Major() const { return UInt32(fLevel >> kMajorShift); }
plRenderLevel& Set(UInt32 l) { fLevel = l; return *this; }
plRenderLevel& Set(UInt32 major, UInt32 minor) { fLevel = (UInt32(major) << kMajorShift) | UInt32(minor); return *this; }
UInt32 fLevel;
static plRenderLevel OpaqueRenderLevel() { return plRenderLevel(kOpaqueMajorLevel, kOpaqueMinorLevel); }
};
#endif // plRenderLevel_inc