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/*
* Copyright (C) 2005-2008 Team XBMC
* http://www.xbmc.org
*
* 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 2, 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 XBMC; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
* http://www.gnu.org/copyleft/gpl.html
*
*/
#include "Texture.h"
#include "Picture.h"
#include "WindowingFactory.h"
#include "utils/log.h"
#define MAX_PICTURE_WIDTH 2048
#define MAX_PICTURE_HEIGHT 2048
/************************************************************************/
/* */
/************************************************************************/
CBaseTexture::CBaseTexture(unsigned int width, unsigned int height, unsigned int BPP)
{
m_imageWidth = width;
m_imageHeight = height;
m_pTexture = NULL;
m_pPixels = NULL;
m_nBPP = BPP;
m_loadedToGPU = false;
m_nTextureHeight = 0;
m_nTextureWidth = 0;
}
CBaseTexture::~CBaseTexture()
{
delete[] m_pPixels;
}
void CBaseTexture::Allocate(unsigned int width, unsigned int height, unsigned int BPP)
{
if (BPP != 0)
m_nBPP = BPP;
m_imageWidth = width;
m_imageHeight = height;
if (g_Windowing.NeedPower2Texture())
{
m_nTextureWidth = PadPow2(m_imageWidth);
m_nTextureHeight = PadPow2(m_imageHeight);
}
else
{
m_nTextureWidth = m_imageWidth;
m_nTextureHeight = m_imageHeight;
}
delete[] m_pPixels;
m_pPixels = new unsigned char[m_nTextureWidth * m_nTextureHeight * m_nBPP / 8];
}
void CBaseTexture::Update(int w, int h, int pitch, const unsigned char *pixels, bool loadToGPU)
{
if (pixels == NULL)
return;
Allocate(w, h, 0);
// Resize texture to POT if needed
const unsigned char *src = pixels;
unsigned char* resized = m_pPixels;
for (int y = 0; y < h; y++)
{
memcpy(resized, src, pitch); // make sure pitch is not bigger than our width
src += pitch;
// repeat last column to simulate clamp_to_edge
for(unsigned int i = pitch; i < m_nTextureWidth*4; i+=4)
memcpy(resized+i, src-4, 4);
resized += (m_nTextureWidth * 4);
}
// clamp to edge - repeat last row
unsigned char *dest = m_pPixels + h*GetPitch();
for (unsigned int y = h; y < m_nTextureHeight; y++)
{
memcpy(dest, dest-GetPitch(), GetPitch());
dest += GetPitch();
}
if (loadToGPU)
LoadToGPU();
}
bool CBaseTexture::LoadFromFile(const CStdString& texturePath)
{
CPicture pic;
if(!pic.Load(texturePath, this, MAX_PICTURE_WIDTH, MAX_PICTURE_HEIGHT))
{
CLog::Log(LOGERROR, "Texture manager unable to load file: %s", texturePath.c_str());
return false;
}
return true;
}
bool CBaseTexture::LoadFromMemory(unsigned int width, unsigned int height, unsigned int pitch, unsigned int BPP, unsigned char* pPixels)
{
m_imageWidth = width;
m_imageHeight = height;
m_nBPP = BPP;
Update(width, height, pitch, pPixels, false);
return true;
}
bool CBaseTexture::LoadPaletted(unsigned int width, unsigned int height, unsigned int pitch, const unsigned char *pixels, const COLOR *palette)
{
if (pixels == NULL || palette == NULL)
return false;
Allocate(width, height, 32);
for (unsigned int y = 0; y < height; y++)
{
unsigned char *dest = m_pPixels + y * GetPitch();
const unsigned char *src = pixels + y * pitch;
for (unsigned int x = 0; x < width; x++)
{
COLOR col = palette[*src++];
*dest++ = col.b;
*dest++ = col.g;
*dest++ = col.r;
*dest++ = col.x;
}
// clamp to edge - repeat last column
for (unsigned int x = width; x < m_nTextureWidth; x++)
{
COLOR col = palette[*(src-1)];
*dest++ = col.b;
*dest++ = col.g;
*dest++ = col.r;
*dest++ = col.x;
}
}
// clamp to edge - repeat last row
unsigned char *dest = m_pPixels + height*GetPitch();
for (unsigned int y = height; y < m_nTextureHeight; y++)
{
memcpy(dest, dest-GetPitch(), GetPitch());
dest += GetPitch();
}
return true;
}
DWORD CBaseTexture::PadPow2(DWORD x)
{
--x;
x |= x >> 1;
x |= x >> 2;
x |= x >> 4;
x |= x >> 8;
x |= x >> 16;
return ++x;
}
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