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| #include "stdafx.h"
#include "Texture.h"
#include "CxImage/ximage.h"
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
int CTexture::LoadFromFile(const char* pcszFileName)
{
if (pcszFileName != NULL)
{
strcpy(m_szTexName, pcszFileName);
}
int nStrLen = strlen(pcszFileName);
int nLen = MultiByteToWideChar(CP_ACP, 0, pcszFileName, nStrLen, NULL, 0);
MultiByteToWideChar(CP_ACP, 0, pcszFileName, nStrLen, m_char16ImgName, nLen);
m_char16ImgName[nLen] = '\0';
Gdiplus::Bitmap image(m_char16ImgName);
m_nWidth = image.GetWidth();
m_nHeight = image.GetHeight();
Gdiplus::Rect rect(0, 0, m_nWidth, m_nHeight);
Gdiplus::BitmapData bitmapData;
image.LockBits(rect, Gdiplus::ImageLockModeRead | Gdiplus::ImageLockModeWrite,
PixelFormat24bppRGB, bitmapData);
if (m_byData)
{
delete m_byData;
m_byData = NULL;
}
m_byData = new BYTE[m_nWidth * m_nHeight * 3];
BYTE* pByte = (BYTE*)bitmapData.Scan0;
int nOffset = bitmapData.Stride - m_nWidth * 3;
for (int i = 0; i < m_nHeight; ++i)
{
for (int j = 0; j < m_nWidth; ++j)
{
m_byData[(i * m_nWidth + j) * 3] = pByte[0];
m_byData[(i * m_nWidth + j) * 3 + 1] = pByte[1];
m_byData[(i * m_nWidth + j) * 3 + 2] = pByte[2];
pByte += 3;
}
pByte += nOffset;
}
image.UnlockBits(bitmapData);
return 1;
}
void CTexture::Init2DTex()
{
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glGenTextures(1, m_uTexName);
glBindTexture(GL_TEXTURE_2D, m_uTexName);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
int nRet = gluBuild2DMipmaps(GL_TEXTURE_2D, 3, m_nWidth, m_nHeight, GL_RGB, GL_UNSIGNED_BYTE,
m_byData);
if (nRet != 0)
{
AfxMessageBox("加载纹理失败");
}
}
void CTexture::Init1DVertTex()
{
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glGenTextures(1, m_uTexName);
glBindTexture(GL_TEXTURE_1D, m_uTexName);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
BYTE* pbyData = new BYTE[m_nHeight * 3];
int nAdd = m_nWidth / 2;
for (int i = 0; i < m_nHeight; ++i)
{
pbyData[i * 3] = m_byData[(i * m_nWidth + nAdd) * 3];
pbyData[i * 3 + 1] = m_byData[(i * m_nWidth + nAdd) * 3 + 1];
pbyData[i * 3 + 2] = m_byData[(i * m_nWidth + nAdd) * 3 + 2];
}
int nRet = gluBuild1DMipmaps(GL_TEXTURE_1D, 3, m_nHeight, GL_RGB, GL_UNSIGNED_BYTE,
pbyData);
if (nRet != 0)
{
AfxMessageBox("加载纹理失败");
}
delete pbyData;
}
CTexture::~CTexture()
{
if (m_byData)
delete m_byData;
}
|
