CODEWITHSUNDEEP
directxwindows-store-apps
hoody
hoody

Reputation: 363

How can I create texture in DirectX 9 without d3dx9?

Windows 8 Store don't want to see d3dx9 in my app, that was written in DirectX 9. But I need D3DXCreateTexture function. I was found DirectXTex, but it wants DirectX 11. Is there any way to avoid rewriting all in DirectX 11?

Upvotes: 1

Views: 3939

Answers (2)

Drop
Drop

Reputation: 13003

First you must load raw bitmap data. There are many ways:

  • write your own loader ( not in 21st century oO )
  • use library for a formats you need. Such as libpng, libjpeg, more on Google =)
  • use multiformat library (C/C++ Image Loading). FreeImage is my favorite.

Then you must create IDirect3DTexture9 via D3DXCreateTextureFromFileInMemory or D3DXCreateTextureFromFileInMemoryEx and you are ready to go =)

Update:

Okay. We can't use it D3DXCreateTextureFromFileInMemory. So... we can implement it. As earlier, we must load bitmap to memory somehow (I prefer use FreeImage). Then we create empty IDirect3DTexture9* via CreateTexture() method. Then we copy contents of bitmap to that texture using LockRect()/UnlockRect(). That time we ready to go surely, because I've tested it! =) Test VS2012 solution including FreeType : link (messy and dirty, rewrite it please and wrap in a class ) The core function:

void CreateTexture(const wchar_t* filename)
{
unsigned int width(0), height(0);
std::vector<unsigned char> bitmap;
LoadBitmapFile(filename, bitmap, width, height); // Wrapped FreeImage

// Create empty IDirect3DTexture9*
pDevice->CreateTexture(width, height, 1, 0, 
                           D3DFMT_A8R8G8B8, D3DPOOL_MANAGED, &pTexture, 0);
if (!pTexture)
{
    throw std::runtime_error( "CreateTexture failed");
}

D3DLOCKED_RECT rect;
pTexture->LockRect( 0, &rect, 0, D3DLOCK_DISCARD );
unsigned char* dest = static_cast<unsigned char*>(rect.pBits);
memcpy(dest, &bitmap[0], sizeof(unsigned char) * width * height * 4);
pTexture->UnlockRect(0);

}

Hope it helps.

P.S. Actually there was another problem: projection matrix. You will need to create it manually or use some math lib, because D3DXMatrix..() functions you can't use.

Upvotes: 3

hoody
hoody

Reputation: 363

It seems the DirectX 9 code must be rewriten with DirectX 11, cause DirectXTK, DirectXTex, DirectXMath libs works only with DX11. More information I have found at http://social.msdn.microsoft.com/Forums/en-US/wingameswithdirectx/thread/c082b208-0d95-4c41-852f-9450340093f4/

Upvotes: -1

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