Direct3D HLSL Programming using RenderMonkey IDE

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Tips To Improve Your HLSL Output • Pay attention to your loops – Flow control doesn’t come for free in DirectX® 9.0, basic flow control is added in the next DX release – Loops are unrolled ⇒ slower shader execution time • Use HLSL intrinsic functions – Helps hardware to optimize your shaders • Use float, float3, and float4 as appropriate – Stuff your values into a vector when needed – However, proper use of scalar operations helps both the compiler and the hardware – Neat example: float3 vNormal; float fOpacity; float4( vNormal, fOpacity ) = tex2D( normalAndOpacityMap, Tex ); Game Developer Conference, San Jose, CA, March 7 th 2003
Generate Better PS_1_x Code Through Good HLSL Use • Signed Scale (_bx2) value * 2 - 1 generates _bx2 modifier on the source register • Times 2, 4, 8, Divide by 2, 4, 8 1. Source register modifiers: for n = 2, 4, 8, 0.5, 0.25, 0.125, multiplying the source value by n will generate the modifier. Example: return Value*2 generates _x2 modifier on the source reg. 2. Destination modifiers: – for X = 2, 4, 8, 0.5, 0.25, 0.125, declare – Use that variable to generate a destination modifier: static const float N = 2; float4 f=(Value1+Value2)*N; static const float N = X; Example: generates Game Developer Conference, San Jose, CA, March 7 th 2003 add_x2 r0,v0, v1
Page 1 and 2: Direct3D® High Level Shader Langua
Page 3 and 4: RenderMonkey Addresses the Needs of
Page 5 and 6: Program Your Shaders Using Our Intu
Page 7 and 8: High Level Shading Language • Int
Page 9 and 10: Creating an HLSL-based Effect Using
Page 11 and 12: HLSL Shader Editor Plug-in • Allo
Page 13 and 14: Diffuse Lighting Effect: Pixel Shad
Page 15 and 16: Specular Lighting: Vertex Shader st
Page 17 and 18: Advanced Shader Examples • Marble
Page 19 and 20: Veined Marble Shader • Based on t
Page 21 and 22: Veined Marble Shader Algorithm: Bas
Page 23 and 24: Vein Turbulence • Compute vein tu
Page 25 and 26: Diffusely Reflective Marble Blendin
Page 27 and 28: Anisotropic Metal Shader Game Devel
Page 29 and 30: RenderMonkey Anisotropic Metal Exam
Page 31 and 32: Determining Direction of Anisotropy
Page 33 and 34: Computing Anisotropic Lighting: Ver
Page 35 and 36: Assembling The Final Look • Ring
Page 37 and 38: Translucent Iridescent Shader: Butt
Page 39 and 40: RenderMonkey Butterfly Wings Shader
Page 41 and 42: Translucent Iridescent Shader: Vert
Page 43 and 44: Diffuse Illumination For Translucen
Page 45 and 46: Making Butterly Wings Iridescent Ir
Page 47: Example of Translucent Iridescent S
Page 51 and 52: Summary • Use HLSL for your shade

Direct3D HLSL Programming using RenderMonkey IDE

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