51 lines
1.6 KiB
C++
Executable File
51 lines
1.6 KiB
C++
Executable File
//-----------------------------------------------------------------------------
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// Torque Game Engine
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// Copyright (C) GarageGames.com, Inc.
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//-----------------------------------------------------------------------------
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#include "terrain/terrData.h"
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#include "math/mMath.h"
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#include "dgl/dgl.h"
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#include "dgl/gBitmap.h"
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#include "terrain/terrRender.h"
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//--------------------------------------------------------------------------
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void bitmapExtrude5551_asm(const void *srcMip, void *mip, U32 height, U32 width)
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{
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const U16 *src = (const U16 *) srcMip;
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U16 *dst = (U16 *) mip;
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U32 stride = width << 1;
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for(U32 y = 0; y < height; y++)
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{
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for(U32 x = 0; x < width; x++)
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{
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U32 a = src[0];
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U32 b = src[1];
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U32 c = src[stride];
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U32 d = src[stride+1];
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dst[x] = ((((a >> 11) + (b >> 11) + (c >> 11) + (d >> 11)) >> 2) << 11) |
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((( ((a >> 6) & 0x1f) + ((b >> 6) & 0x1f) + ((c >> 6) & 0x1f) + ((d >> 6) & 0x1F) ) >> 2) << 6) |
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((( ((a >> 1) & 0x1F) + ((b >> 1) & 0x1F) + ((c >> 1) & 0x1f) + ((d >> 1) & 0x1f)) >> 2) << 1);
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src += 2;
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}
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src += stride;
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dst += width;
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}
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}
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//--------------------------------------------------------------------------
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void PlatformBlitInit()
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{
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bitmapExtrude5551 = bitmapExtrude5551_asm;
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bitmapExtrudeRGB = bitmapExtrudeRGB_c;
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if (Platform::SystemInfo.processor.properties & CPU_PROP_MMX)
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{
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// JMQ: haven't bothered porting mmx bitmap funcs because they don't
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// seem to offer a big performance boost right now.
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}
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}
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