mirror of
https://github.com/TorqueGameEngines/Torque3D.git
synced 2026-01-20 04:34:48 +00:00
144 lines
4.3 KiB
C++
144 lines
4.3 KiB
C++
//-----------------------------------------------------------------------------
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// Copyright (c) 2012 GarageGames, LLC
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//-----------------------------------------------------------------------------
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#ifndef _GFXFORMATUTILS_H_
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#define _GFXFORMATUTILS_H_
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#ifndef _PLATFORM_H_
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#include "platform/platform.h"
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#endif
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#ifndef _GFXENUMS_H_
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#include "gfx/gfxEnums.h"
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#endif
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#ifndef _COLOR_H_
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#include "core/color.h"
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#endif
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//WIP: still in early stages
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/// Some information about a GFXFormat.
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struct GFXFormatInfo
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{
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protected:
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struct Data
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{
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/// Bytes per single pixel.
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U32 mBytesPerPixel;
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/// If true, format has alpha channel.
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bool mHasAlpha;
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/// If true, format uses compression.
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bool mIsCompressed;
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/// If true, channels are in floating-point.
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bool mIsFloatingPoint;
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Data() :mBytesPerPixel(0), mHasAlpha(false), mIsCompressed(false), mIsFloatingPoint(false) {}
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Data( U32 bpp, bool hasAlpha = false, bool isCompressed = false, bool isFP = false )
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: mBytesPerPixel( bpp ),
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mHasAlpha( hasAlpha ),
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mIsCompressed( isCompressed ),
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mIsFloatingPoint( isFP ) {}
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};
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GFXFormat mFormat;
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static Data smFormatInfos[ GFXFormat_COUNT ];
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public:
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GFXFormatInfo( GFXFormat format )
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: mFormat( format ) {}
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/// @return the number of bytes per pixel in this format.
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/// @note For compressed formats that can't give a fixed value per pixel,
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/// this will be zero.
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U32 getBytesPerPixel() const { return smFormatInfos[ mFormat ].mBytesPerPixel; }
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/// @return true if the format has an alpha channel.
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bool hasAlpha() const { return smFormatInfos[ mFormat ].mHasAlpha; }
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/// @return true if format uses compression.
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bool isCompressed() const { return smFormatInfos[ mFormat ].mIsCompressed; }
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/// @return true if channels are stored in floating-point format.
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bool isFloatingPoint() const { return smFormatInfos[ mFormat ].mIsFloatingPoint; }
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};
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#if 0
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///
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extern void GFXCopyPixels( GFXFormat fromFormat, U32 fromWidth, U32 fromHeight, U8* fromData,
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GFXFormat toFormat, U32 toWidth, U32 toHeight, U8* toData );
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#endif
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inline void GFXPackPixel( GFXFormat format, U8*& ptr, U8 red, U8 green, U8 blue, U8 alpha, bool leastSignficantFirst = true )
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{
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switch( format )
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{
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case GFXFormatR8G8B8A8:
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if( leastSignficantFirst )
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{
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ptr[ 0 ] = blue;
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ptr[ 1 ] = green;
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ptr[ 2 ] = red;
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ptr[ 3 ] = alpha;
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}
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else
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{
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ptr[ 0 ] = red;
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ptr[ 1 ] = green;
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ptr[ 2 ] = blue;
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ptr[ 3 ] = alpha;
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}
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ptr += 4;
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break;
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case GFXFormatR8G8B8:
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if( leastSignficantFirst )
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{
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ptr[ 0 ] = blue;
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ptr[ 1 ] = green;
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ptr[ 2 ] = red;
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}
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else
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{
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ptr[ 0 ] = red;
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ptr[ 1 ] = green;
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ptr[ 2 ] = blue;
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}
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ptr += 3;
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break;
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default:
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AssertISV( false, "GFXPackPixel() - pixel format not implemented." );
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}
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}
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#endif // _GFXFORMATUTILS_H_
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