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DirectX and Awesomium

oneprotect

22 Nov, 2010 08:30 AM via web

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How would I get an Awesomium::RenderBuffer* drawn using DirectX most efficiently?

I don't think DirectX has something like glDrawPixels, so I'm kinda stuck on how.

Thanks for your help.

1. Support Staff 2 Posted by Adam Simmons on 30 Nov, 2010 07:46 AM

   

   Hi oneprotect,

   The best way would be to use a dynamic texture wrapped to some screen-projected rectangle in Direct3D.

   For example, to update the contents of a texture (IDirect3DTexture) from a RenderBuffer instance:

   const RenderBuffer* rBuffer = webView->render();
   
   D3DLOCKED_RECT lockedRect;
   myTexture->LockRect(0, &locked, NULL, D3DLOCK_DISCARD);
   memcpy(locked.pBits, rBuffer->buffer, rBuffer->rowSpan * rBuffer->height);
   myTexture->UnlockRect(0);
   

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2. 3 Posted by Jonathan on 10 Jan, 2012 02:14 AM

   

   Thanks for replying. I got the texture to come up, but it comes out black.

   Here's the rendering code.

   const awe_renderbuffer *renderBuffer = awe_webview_render(webView);
   
   if (renderBuffer)
   {
       unsigned char *myBuffer;
       myBuffer = new unsigned char[512 * 512 * 4];
       awe_renderbuffer_copy_to(renderBuffer, myBuffer, 512 * 4, 4, true, false);
   
       D3DLOCKED_RECT lockedRect;
       texture->LockRect(0, &lockedRect, NULL, D3DLOCK_DISCARD);
       memcpy(lockedRect.pBits, myBuffer, sizeof(myBuffer));
       texture->UnlockRect(0); 
       delete myBuffer;
   }
   

   Just in case, here's my code that loads up the google url:

   // Create our URL string
   awe_string* url_str = awe_string_create_from_ascii(URL, strlen(URL));
   
   // Load a certain URL into our WebView instance
   awe_webview_load_url(webView, url_str, awe_string_empty(), awe_string_empty(), awe_string_empty());
   
   // Destroy our URL string
   awe_string_destroy(url_str);
   

   Thanks, Jonathan.

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3. 4 Posted by Jonathan on 10 Jan, 2012 02:56 AM

   

   LOL! Oops. I replied on the wrong discussion. But I guess this is a relevant question and if someone wants to answer that would be great. :)

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4. 5 Posted by Jonathan on 10 Jan, 2012 03:33 AM

   

   Got it!

   Pretty much I was loading the buffer size wrong

   //This is how I was doing it
   memcpy(lockedRect.pBits, myBuffer, sizeof(myBuffer));
   //But it's supposed to be width * height * rowspan
   memcpy(lockedRect.pBits, myBuffer, 512*512*4);
   

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