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