Function stb_load

cmp_framework/compute_base.cpp:656–698

//==============================

CMP_ERROR stb_load(const char* SourceFile, MipSet* MipSetIn)
{
    int            Width, Height, ComponentCount;
    unsigned char* pTempData = stbi_load(SourceFile, &Width, &Height, &ComponentCount, STBI_rgb_alpha);

    if (pTempData == NULL)
    {
        return CMP_ERR_UNSUPPORTED_SOURCE_FORMAT;
    }

    CMP_CMIPS CMips;

    memset(MipSetIn, 0, sizeof(MipSet));
    if (!CMips.AllocateMipSet(MipSetIn, CF_8bit, TDT_ARGB, TT_2D, Width, Height, 1))
    {
        return CMP_ERR_MEM_ALLOC_FOR_MIPSET;
    }

    if (!CMips.AllocateMipLevelData(CMips.GetMipLevel(MipSetIn, 0), Width, Height, CF_8bit, TDT_ARGB))
    {
        return CMP_ERR_MEM_ALLOC_FOR_MIPSET;
    }

    MipSetIn->m_nMipLevels = 1;
    MipSetIn->m_format     = CMP_FORMAT_RGBA_8888;

    CMP_BYTE* pData = CMips.GetMipLevel(MipSetIn, 0)->m_pbData;

    // RGBA : 8888 = 4 bytes
    CMP_DWORD dwPitch = (4 * MipSetIn->m_nWidth);
    CMP_DWORD dwSize  = dwPitch * MipSetIn->m_nHeight;

    memcpy(pData, pTempData, dwSize);

    // Assign miplevel 0 to MipSetin pData ref
    // both miplevel pData and mipset pData will point to the same location
    // Typically mipset pData is assign a pointer to the current miplevel data been processed at run time
    MipSetIn->pData      = pData;
    MipSetIn->dwDataSize = dwSize;

    stbi_image_free(pTempData);
    return CMP_OK;
}

void CMP_API CMP_FreeMipSet(CMP_MipSet* MipSetIn)
{