void LoadCheckerTexture()
{
try
{
std::string filename(LOCAL_FILE_DIR);
filename += "checker.dds";
std::auto_ptr<glimg::ImageSet> pImageSet(glimg::loaders::dds::LoadFromFile(filename.c_str()));
glGenTextures(1, &g_checkerTexture);
glBindTexture(GL_TEXTURE_2D, g_checkerTexture);
for(int mipmapLevel = 0; mipmapLevel < pImageSet->GetMipmapCount(); mipmapLevel++)
{
glimg::SingleImage image = pImageSet->GetImage(mipmapLevel, 0, 0);
glimg::Dimensions dims = image.GetDimensions();
glTexImage2D(GL_TEXTURE_2D, mipmapLevel, GL_RGB8, dims.width, dims.height, 0,
GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, image.GetImageData());
}
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, pImageSet->GetMipmapCount() - 1);
glBindTexture(GL_TEXTURE_2D, 0);
}
catch(std::exception &e)
{
printf("%s\n", e.what());
throw;
}
}
void LoadTextures()
{
glGenTextures(2, g_textures);
std::string filename(LOCAL_FILE_DIR);
filename += "gamma_ramp.png";
try
{
std::auto_ptr<glimg::ImageSet> pImageSet(glimg::loaders::stb::LoadFromFile(filename.c_str()));
glimg::SingleImage image = pImageSet->GetImage(0, 0, 0);
glimg::Dimensions dims = image.GetDimensions();
glimg::OpenGLPixelTransferParams pxTrans = glimg::GetUploadFormatType(pImageSet->GetFormat(), 0);
glBindTexture(GL_TEXTURE_2D, g_textures[0]);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB8, dims.width, dims.height, 0,
pxTrans.format, pxTrans.type, image.GetImageData());
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, pImageSet->GetMipmapCount() - 1);
glBindTexture(GL_TEXTURE_2D, g_textures[1]);
glTexImage2D(GL_TEXTURE_2D, 0, GL_SRGB8, dims.width, dims.height, 0,
pxTrans.format, pxTrans.type, image.GetImageData());
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, pImageSet->GetMipmapCount() - 1);
glBindTexture(GL_TEXTURE_2D, 0);
}
catch(std::exception &e)
{
printf("%s\n", e.what());
throw;
}
glGenSamplers(1, &g_samplerObj);
glSamplerParameteri(g_samplerObj, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glSamplerParameteri(g_samplerObj, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glSamplerParameteri(g_samplerObj, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glSamplerParameteri(g_samplerObj, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
}
