HLSL optimizer is beyond earthly logic

    if b2

      if b1

        mul r0.xy, r0, c0.x

        texld r4, r0, s6

        if !b2

          mad r0.xyw, r4.xyzz, c121.x, c121.y

          mad r4.xyz, r3, r3.w, r0.xyww

        endif

      endif

    else

      // ...

    endif

(Thanks Benoit)

Why name variables when you can use padding?

if (data.lights[id]._padding[1] == NOSPECULAR)
{
...
}

(Thanks Tomasz)

Visit Lake Fail this weekend

Dermatologist / Shader Programmer needed

In search of tangent space basis

Error building vertex shader "ShaderCache/SrpXenon/VertexShaders/1104/6D497FE9-57EB-3786-AF3A-9A22702B96EA" using surface shader "Objects/Undergrowth/Shaders/MP_Harbor_Destruction" because of: Couldn't find vertex element "tangent" (available: pos, normal, texCoord0, index, worldTrans1, worldTrans2, worldTrans3) when building for surface shader "Objects/Undergrowth/Shaders/MP_Harbor_Destruction", vertex shader fragment "Systems/Undergrowth/Wind" and geometry declaration "Objects/Undergrowth/MudClump_01_Mesh_lod0/Stones_small_01:polySurface15_DUP_Stones_small_01:TnTShader1/StreamInstancingHalf". Caused by a mismatch of vertex elements between the state and the surface shader or vertex shader fragment (names are case sensitive).