[Question] Drawing in game?

[Bananenbrot]

Yeah right... you have to adjust the viewport.

        private void PrepareRenderState()
        {
            var viewport = _device.Viewport;
            viewport.MinZ = 0.0f;
            viewport.MaxZ = 0.94f;
            _device.Viewport = viewport;
            _device.VertexShader = null;
            _device.PixelShader = null;
            _device.SetRenderState(RenderState.ZEnable, true);
            _device.SetRenderState(RenderState.ZWriteEnable, true);
            _device.SetRenderState(RenderState.ZFunc, Compare.LessEqual);
            _device.SetRenderState(RenderState.AlphaBlendEnable, true);
            _device.SetRenderState(RenderState.DestinationBlend, Blend.InverseSourceAlpha);
            _device.SetRenderState(RenderState.Lighting, false);
            _device.SetTexture(0, null);
            _device.SetRenderState(RenderState.CullMode, Cull.None);
        }

Note that some settings are redundant or optional for rendering to work... but you definitely should not need more than those.

[-Ryuk-]

I still have issues.

When I render with NearZ/FarZ as normal I don't see anything.

Tired to swap NearZ/FarZ as Master suggested and the result is below -.-

[Bananenbrot]

Did you check your projection matrix for correctness?

[-Ryuk-]

Did you check your projection matrix for correctness?

Thanks +Rep x 4

[Master674]

<something used to be here... its gone now>

[Bananenbrot]

actually you should read out at least the farclip value... it's different depending on where you are. It was the same thing Ryuk got wrong. Look into base + 0x3222D0 (float __cdecl World::GetFarClip()). If you don't want to use the function, read the value which is first moved into xmm0.
If you don't use those values, you get z-buffer issues like Ryuk, who had Camera.NearZ and Camera.FarZ for clipping (0 and 1), which are actually for the viewport.

[miceiken]

Great information Bananenbrot!

[kingdeking]

Orcs have lasas now ??? Uhhaaaaaaa

[Kalle200000]

It is awesome that you guys keep this forumsection alive. Impressive work!

[DarkLinux]

Thanks to boredevil !!



Thanks Bananenbrot! Boredevil used a SetViewport hook, but object flashed. This will help me fix that problem +4 Rep

[Bananenbrot]

When I tried that, it would not render under certain circumstances. IIRC it won't render (or at least incorrectly) when in a building because there are less/more render calls.
Also setting near and far clip to a fixed value like 1600 will result in zbuffer errors. For example, if the actual farclip value used by wow is 800, things that are at about 1500 yards "away" from the camera could be rendered before wow's stuff that's at 700 yards.
Don't nail me on this, because zbuffer values are normally logarithmically or reziprocal distributed in regards to the distance as opposed to linear... But you already can see it if you render triangles in every object. The triangle will seem to be slightly in front of them from every point of view.

[Bananenbrot]

For anyone wondering what to hook in recent versions: 0x00B40DB0 (relative to 0x400000, 5.1 16357) is a simple thiscall which is usable for rendering behind the UI including alpha checks. Just remember that you need to additionaly throw in ColorWriteEnable with all 4 flags set.