IDirect3DSurface9* surface_;
DXUTGetD3DDevice()->CreateOffscreenPlainSurface( 200, 150, D3DFMT_X8R8G8B8,
D3DPOOL_DEFAULT, &surface_, NULL );
RECT DstRect;
DstRect.left = 0;
DstRect.top = 0;
DstRect.right = 200;
DstRect.bottom = 150;
DXUTGetD3DDevice()->ColorFill( surface_, &DstRect, D3DCOLOR_XRGB(0, 0, 30) );
DXUTGetD3DDevice()->SetRenderTarget( 0, surface_ );
// rendering of the mesh
DstRect.left = 400;
DstRect.top = 400;
DstRect.right = 600;
DstRect.bottom = 550;
IDirect3DSurface9* backBuffer = NULL;
if( !FAILED( DXUTGetD3DDevice()->GetBackBuffer( 0, 0, D3DBACKBUFFER_TYPE_MONO, &backBuffer ) ) )
{
DXUTGetD3DDevice()->StretchRect( surface_, NULL, backBuffer, &DstRect, D3DTEXF_NONE );
}
Problem Rendering Mesh to Surface
Author
Hello,
I want to render a mesh to surface (for something like a Status display of the actual viewd Spaceship)
What I'am doing is the following:
It works aso far as I see the surface and also my mesh, but my mesh is not placed on the surface, so what do I wrong?
Thanks a lot!
The surface you render to needs to have come from a texture you created with the D3DUSAGE_RENDERTARGET flag. Check out this article, it goes through all the stages of render to texture.
Alan
Alan
Author
No, I don't want to render to a texture...
all I want is a second surface, exactly like the backbuffer, to which I can render
and then, when done copy the content of this surface to the backbuffer for displaying, just like my code shows you.
A texture seems much to complicated for this, as I than need a vertexbuffer to draw this texture...
all I want is a second surface, exactly like the backbuffer, to which I can render
and then, when done copy the content of this surface to the backbuffer for displaying, just like my code shows you.
A texture seems much to complicated for this, as I than need a vertexbuffer to draw this texture...
There is a good reason for using textures - performance. Whilst it may not be a problem, and isn't always the case, rendering a texture to the screen is a lot quicker than copying a surface to the backbuffer.
Also, it's not clear from the documentation - but you might want to use IDirect3DDevice9::CreateRenderTarget() as it implicitely specifies D3DUSAGE_RENDERTARGET. Your later call to SetRenderTarget() will fail without it:
You can also eliminate the ColorFill() operation - Set the render target first, then use a regular Clear() operation.
Finally, have you run the application against the debug runtimes? it's possible you aren't getting any output due to an error...
hth
Jack
Also, it's not clear from the documentation - but you might want to use IDirect3DDevice9::CreateRenderTarget() as it implicitely specifies D3DUSAGE_RENDERTARGET. Your later call to SetRenderTarget() will fail without it:
Quote:The new render-target surface must have at least D3DUSAGE_RENDERTARGET specified.
You can also eliminate the ColorFill() operation - Set the render target first, then use a regular Clear() operation.
Finally, have you run the application against the debug runtimes? it's possible you aren't getting any output due to an error...
hth
Jack
This topic is closed to new replies.
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