ShaderX Shader Programming Tips & Tricks With DirectX 9

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Introduction the effects are visible. The article “Shaders under Control (Codecreatures Engine)” by Oliver Hoeller describes the base architecture used in the Codecreatures engine. Scott Sherman, Dan Amerson, Shaun Kime, and Tim Preston describe how they integrated shaders into the Gamebryo Engine. A complete high-level programming language vertex shader compiler with source is given in David Pangerl’s article “Vertex Shader Compiler.” The final article in this book, “Shader Disassembler,” by Jean-Sebastian Luce covers the creation of a shader disassembler that can disassemble all available shader versions in DirectX 9. xxiii
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Page 4 and 5: Contents Preface vii About the Auth
Page 6 and 7: Contents Simulation of Iridescence
Page 8 and 9: Preface After the tremendous succes
Page 10 and 11: About the Authors Dan Amerson Dan g
Page 12 and 13: About the Authors currently works o
Page 14 and 15: About the Authors where he develops
Page 16 and 17: About the Authors River Media, 2002
Page 18 and 19: About the Authors ATI Research, whe
Page 20 and 21: Introduction This book is a collect
Page 22 and 23: Introduction Nicolas Thibieroz show
Page 26: Section I Geometry Manipulation Tri
Page 29 and 30: Section I — Geometry Manipulation
Page 43 and 44: Terrain Geomorphing in the Vertex S
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Section I — Geometry Manipulation
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Collision Shaders Takashi Imagire I
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Normal Map Compression by Jakub Kla
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Section II — Rendering Techniques
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Simulating Blending Operations on F
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Drops of Water and Texture Sprites
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210 Advanced Water Effects Modifica
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214 Advanced Water Effects done by
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Efficient Evaluation of Irradiance
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Practical Precomputed Radiance Tran
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Advanced Sky Dome Rendering Marco S
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Meshuggah’s Effects Explained Car
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278 Meshuggah’s Effects Explained
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Stereoscopic Rendering in Hardware
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Hatching, Stroke Styles, and Pointi
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Layered Fog Overview 348 Guillaume
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Dense Matrix Algebra on the GPU Ád
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Introduction Software Vertex Shader
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Processor Features and Performance
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processed. The exact number of vert
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Write Directly to Output Registers
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Section III — Software Shaders an
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the features available in later sha
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There is a handy macro to make it a
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Luckily there’s a shortcut called
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} Section III — Software Shaders
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�z A �� x C For the gradie
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u w w u C x y x y v w w v C x y x y
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SoftD3D: A Software-only Implementa
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Then it was time to implement the
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� Fixed-function pipeline using D
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ViewerPosition.y = -Transform[D3DTS
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forceinline void FastFloat2Int SetF
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Let’s summarize this stage again.
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Alpha Testing Z-Testing If D3DRS_AL
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Output to the Render Target Finally
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References Section III — Software
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named constants into your code that
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Section IV Image Space Advanced Ima
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Section IV — Image Space 440 Adva
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Section IV — Image Space 466 Nigh
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Section IV — Image Space 468 Nigh
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Section IV — Image Space 470 Non-
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Section IV — Image Space 482 Imag
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Section IV — Image Space 520 Usin
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Mandelbrot Set Rendering Emil Perss
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Section IV — Image Space 528 Mand
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Section IV — Image Space 530 Real
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Presentation Soft Shadows Flavien B
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that is located at the center of th
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Figure 2: Inner and outer volumes f
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As a result, we end up with a verte
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Outer Volume by Jittering the Point
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Section V — Shadows Soft Shadows
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; step 3: G=D*M' mul r8, r8, c1.x ;
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No vertex shader is needed, since t
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the conditional moves plus six for
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dcl position0 v0 dcl texcoord0 v2 ;
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References Section V — Shadows So
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In the diagram at right, the dotted
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Following the second shadow test, t
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The largest mipmap level contains a
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Introduction Reverse Extruded Shado
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� Add bias to polygons of visible
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What does this technique do? It’s
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Summary � It’s more robust than
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The Problems Shader Abstraction Tom
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The Material The core concept in th
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existing Materials and trying to ma
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Section VI — 3D Engine and Tools
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handle a lot of the cases by render
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e fed in, and in most cases the Mat
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TextureSourceNormalMap class, Gener
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Once the main scene and the effects
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Alpha-blended Objects Traditionally
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Because of this, it is worth lookin
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Distortion Section VI — 3D Engine
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endered to at the same time. In man
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Introduction Shaders under Control
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The distribution in databases that
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dynamic per-pixel illumination, dur
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Introduction The Past Shader Integr
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The NetImmerse Solution Section VI
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Support Industry Standard Formats T
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shader interface classes from a num
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features are an incredible help to
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Constant Register Mapping Section V
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At the lowest level, the Gamebryo S
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As you can see from this diagram, d
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Simple Access to Shader Collections
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Concept DirectX Vertex Shader Assem
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Functions The constant definition t
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Plug-ins Here is an example of the
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Arrays The VSC supports arrays as p
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adical plugin FinalMatrix(vector x,
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Function Description float ceil(flo
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} SelectedLight.Range, out.Tex0, ou
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Gallery #include void vsmain(float
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Shader Disassembler NOTE In this ar
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Version Token Bits 31-16 Bits 15-8
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� The swizzle field contains (for
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Color Plate 1. A PVS optimized scen
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Color Plate 4. (left) Diffuse (dot3
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Color Plate 8. Rendering drop of wa
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Color Plate 13. Diffuse data (See p
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A B C D E F G H A translucent and i
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Color Plate 20. A real-time impleme
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Figure 7 (See page 478.) Figure 8 (
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Example of real-time depth of field
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2D noise function, 34 2D shapes, us
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using to light illustrations, 345-3
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passing object ID to lighting view
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translucency, 309 calculating, 313-
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for more? leading Game Developer’
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CD/Source Code Usage License Agreem
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