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https://github.com/mupen64plus/mupen64plus-oldsvn.git
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277 lines
8.3 KiB
C++
277 lines
8.3 KiB
C++
/*
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Copyright (C) 2003 Rice1964
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (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, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "stdafx.h"
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//////////////////////////////////////////
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// Constructors / Deconstructors
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// Probably shouldn't need more than 4096 * 4096
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CTexture::CTexture(uint32 dwWidth, uint32 dwHeight, TextureUsage usage) :
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m_dwWidth(dwWidth),
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m_dwHeight(dwHeight),
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m_dwCreatedTextureWidth(dwWidth),
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m_dwCreatedTextureHeight(dwHeight),
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m_fXScale(1.0f),
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m_fYScale(1.0f),
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m_bScaledS(false),
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m_bScaledT(false),
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m_bClampedS(false),
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m_bClampedT(false),
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m_bIsEnhancedTexture(false),
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m_Usage(usage),
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m_pTexture(NULL),
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m_dwTextureFmt(TEXTURE_FMT_A8R8G8B8)
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{
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// fix me, do something here
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}
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CTexture::~CTexture(void)
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{
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}
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TextureFmt CTexture::GetSurfaceFormat(void)
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{
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if (m_pTexture == NULL)
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return TEXTURE_FMT_UNKNOWN;
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else
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return m_dwTextureFmt;
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}
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uint32 CTexture::GetPixelSize()
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{
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if( m_dwTextureFmt == TEXTURE_FMT_A8R8G8B8 )
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return 4;
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else
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return 2;
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}
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// There are reasons to create this function. D3D and OGL will only create surface of width and height
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// as 2's pow, for example, N64's 20x14 image, D3D and OGL will create a 32x16 surface.
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// When we using such a surface as D3D texture, and the U and V address is for the D3D and OGL surface
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// width and height. It is still OK if the U and V addr value is less than the real image within
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// the D3D surface. But we will have problems if the U and V addr value is larger than it, or even
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// large then 1.0.
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// In such a case, we need to scale the image to the D3D surface dimension, to ease the U/V addr
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// limition
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void CTexture::ScaleImageToSurface(bool scaleS, bool scaleT)
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{
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uint8 g_ucTempBuffer[1024*1024*4];
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if( scaleS==false && scaleT==false) return;
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// If the image is not scaled, call this function to scale the real image to
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// the D3D given dimension
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uint32 width = scaleS ? m_dwWidth : m_dwCreatedTextureWidth;
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uint32 height = scaleT ? m_dwHeight : m_dwCreatedTextureHeight;
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uint32 xDst, yDst;
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uint32 xSrc, ySrc;
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DrawInfo di;
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if (!StartUpdate(&di))
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{
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return;
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}
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int pixSize = GetPixelSize();
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// Copy across from the temp buffer to the surface
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switch (pixSize)
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{
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case 4:
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{
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memcpy((uint8*)g_ucTempBuffer, (uint8*)(di.lpSurface), m_dwHeight*m_dwCreatedTextureWidth*4);
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uint32 * pDst;
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uint32 * pSrc;
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for (yDst = 0; yDst < m_dwCreatedTextureHeight; yDst++)
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{
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// ySrc ranges from 0..m_dwHeight
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// I'd rather do this but sometimes very narrow (i.e. 1 pixel)
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// surfaces are created which results in /0...
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//ySrc = (yDst * (m_dwHeight-1)) / (d3dTextureHeight-1);
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ySrc = (uint32)((yDst * height) / m_dwCreatedTextureHeight+0.49f);
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pSrc = (uint32*)((uint8*)g_ucTempBuffer + (ySrc * m_dwCreatedTextureWidth * 4));
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pDst = (uint32*)((uint8*)di.lpSurface + (yDst * di.lPitch));
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for (xDst = 0; xDst < m_dwCreatedTextureWidth; xDst++)
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{
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xSrc = (uint32)((xDst * width) / m_dwCreatedTextureWidth+0.49f);
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pDst[xDst] = pSrc[xSrc];
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}
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}
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}
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break;
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case 2:
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{
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memcpy((uint8*)g_ucTempBuffer, (uint8*)(di.lpSurface), m_dwHeight*m_dwCreatedTextureWidth*2);
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uint16 * pDst;
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uint16 * pSrc;
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for (yDst = 0; yDst < m_dwCreatedTextureHeight; yDst++)
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{
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// ySrc ranges from 0..m_dwHeight
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ySrc = (yDst * height) / m_dwCreatedTextureHeight;
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pSrc = (uint16*)((uint8*)g_ucTempBuffer + (ySrc * m_dwCreatedTextureWidth * 2));
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pDst = (uint16*)((uint8*)di.lpSurface + (yDst * di.lPitch));
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for (xDst = 0; xDst < m_dwCreatedTextureWidth; xDst++)
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{
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xSrc = (xDst * width) / m_dwCreatedTextureWidth;
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pDst[xDst] = pSrc[xSrc];
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}
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}
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}
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break;
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}
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EndUpdate(&di);
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if( scaleS ) m_bScaledS = true;
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if( scaleT ) m_bScaledT = true;
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}
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void CTexture::ClampImageToSurfaceS()
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{
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if( !m_bClampedS && m_dwWidth < m_dwCreatedTextureWidth )
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{
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DrawInfo di;
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if( StartUpdate(&di) )
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{
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if( m_dwTextureFmt == TEXTURE_FMT_A8R8G8B8 )
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{
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for( uint32 y = 0; y<m_dwHeight; y++ )
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{
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uint32* line = (uint32*)((uint8*)di.lpSurface+di.lPitch*y);
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uint32 val = line[m_dwWidth-1];
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for( uint32 x=m_dwWidth; x<m_dwCreatedTextureWidth; x++ )
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{
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line[x] = val;
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}
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}
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}
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else
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{
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for( uint32 y = 0; y<m_dwHeight; y++ )
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{
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uint16* line = (uint16*)((uint8*)di.lpSurface+di.lPitch*y);
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uint16 val = line[m_dwWidth-1];
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for( uint32 x=m_dwWidth; x<m_dwCreatedTextureWidth; x++ )
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{
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line[x] = val;
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}
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}
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}
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EndUpdate(&di);
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}
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}
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m_bClampedS = true;
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}
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void CTexture::ClampImageToSurfaceT()
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{
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if( !m_bClampedT && m_dwHeight < m_dwCreatedTextureHeight )
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{
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DrawInfo di;
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if( StartUpdate(&di) )
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{
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if( m_dwTextureFmt == TEXTURE_FMT_A8R8G8B8 )
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{
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uint32* linesrc = (uint32*)((uint8*)di.lpSurface+di.lPitch*(m_dwHeight-1));
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for( uint32 y = m_dwHeight; y<m_dwCreatedTextureHeight; y++ )
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{
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uint32* linedst = (uint32*)((uint8*)di.lpSurface+di.lPitch*y);
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for( uint32 x=0; x<m_dwCreatedTextureWidth; x++ )
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{
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linedst[x] = linesrc[x];
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}
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}
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}
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else
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{
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uint16* linesrc = (uint16*)((uint8*)di.lpSurface+di.lPitch*(m_dwHeight-1));
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for( uint32 y = m_dwHeight; y<m_dwCreatedTextureHeight; y++ )
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{
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uint16* linedst = (uint16*)((uint8*)di.lpSurface+di.lPitch*y);
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for( uint32 x=0; x<m_dwCreatedTextureWidth; x++ )
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{
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linedst[x] = linesrc[x];
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}
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}
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}
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EndUpdate(&di);
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}
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}
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m_bClampedT = true;
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}
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void CTexture::RestoreAlphaChannel(void)
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{
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DrawInfo di;
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if ( StartUpdate(&di) )
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{
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uint32 *pSrc = (uint32 *)di.lpSurface;
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LONG lPitch = di.lPitch;
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for (uint32 y = 0; y < m_dwHeight; y++)
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{
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uint32 * dwSrc = (uint32 *)((uint8 *)pSrc + y*lPitch);
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for (uint32 x = 0; x < m_dwWidth; x++)
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{
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uint32 dw = dwSrc[x];
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uint32 dwRed = (uint8)((dw & 0x00FF0000)>>16);
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uint32 dwGreen = (uint8)((dw & 0x0000FF00)>>8 );
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uint32 dwBlue = (uint8)((dw & 0x000000FF) );
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uint32 dwAlpha = (dwRed+dwGreen+dwBlue)/3;
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dw &= 0x00FFFFFF;
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dw |= (dwAlpha<<24);
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/*
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uint32 dw = dwSrc[x];
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if( (dw&0x00FFFFFF) > 0 )
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dw |= 0xFF000000;
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else
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dw &= 0x00FFFFFF;
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*/
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}
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}
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EndUpdate(&di);
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}
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else
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{
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//TRACE0("Cannot lock texture");
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}
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}
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