bool GLTexture::VInitFromBMP(FREEIMAGE_BMP* bitmap)
{
//store width and height
m_width = bitmap->header.width;
m_height = bitmap->header.height;
//now that we have our image data, create opengl texture handle
glGenTextures(1, &m_id);
m_uniqueID = m_id; //store gl texture id as unique id
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
//bind opengl texture handle
glBindTexture(m_target, m_id);
//retrieve internal format
GLenum internalFormat = vixFIBmpToInternalFormat(bitmap->bitmap);
//retrieve format
GLenum format = vixFIBmpToFormat(bitmap->bitmap);
glTexImage2D(m_target, 0, internalFormat, bitmap->header.width, bitmap->header.height, 0, format, GL_UNSIGNED_BYTE, bitmap->data);
glGenerateMipmap(m_target);
glTexParameterf(m_target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterf(m_target, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
return true;
}
ErrCode GLTexture::InitFromFile(const UString& filePath)
{
//pointer to image data
FREEIMAGE_BMP* image = NULL;
/*set texture name*/
m_name = getFileName(filePath);
//try and load the buffer with data
image = FREEIMAGE_LoadImage(filePath);
if (!image)
return ErrCode::ERR_IMAGE_LOAD_FAIL;
//store width and height
m_width = image->header.width;
m_height = image->header.height;
//now that we have our image data, create opengl texture handle
glGenTextures(1, &m_id);
m_uniqueID = m_id; //store gl texture id as unique id
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
//bind opengl texture handle
glBindTexture(m_target, m_id);
//retrieve internal format
GLenum internalFormat = vixFIBmpToInternalFormat(image->bitmap);
//retrieve format
GLenum format = vixFIBmpToFormat(image->bitmap);
glTexImage2D(m_target, 0, internalFormat, image->header.width, image->header.height, 0, format, GL_UNSIGNED_BYTE, image->data);
glGenerateMipmap(m_target);
glTexParameterf(m_target, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterf(m_target, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
//cleanup image allocation
if (image)
delete image;
return ErrCode::ERR_SUCCESS;
}
