Shader Model 3.0

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A scene containing several different 2D HLSL shaders. Distortion of the statue is achieved purely physically, while the texture of the rectangular frame beside it is based on color intensity. The square in the background has been transformed and rotated. The partial transparency and reflection of the water in the foreground are added by a shader applied finally to the entire scene.

The High-Level Shader Language[1] or High-Level Shading Language[2] (HLSL) is a proprietary shading language developed by Microsoft for the Direct3D 9 API to augment the shader assembly language, and went on to become the required shading language for the unified shader model of Direct3D 10 and higher.

HLSL is analogous to the GLSL shading language used with the OpenGL standard. It is very similar to the NvidiaCg shading language, as it was developed alongside it. Early versions of the two languages were considered identical, only marketed differently.[3] HLSL shaders can enable profound speed and detail increases as well as many special effects in both 2D and 3D computer graphics.[citation needed]Maxxforce 13 egr cooler delete kit.

HLSL programs come in six forms: pixel shaders (fragment in GLSL), vertex shaders, geometry shaders, compute shaders, tessellation shaders (Hull and Domain shaders), and raytracing shaders (Ray Generation Shaders, Intersection Shaders, Any Hit/Closest Hit/Miss Shaders). A vertex shader is executed for each vertex that is submitted by the application, and is primarily responsible for transforming the vertex from object space to view space, generating texture coordinates, and calculating lighting coefficients such as the vertex's tangent, binormal and normal vectors. When a group of vertices (normally 3, to form a triangle) come through the vertex shader, their output position is interpolated to form pixels within its area; this process is known as rasterization. Each of these pixels comes through the pixel shader, whereby the resultant screen colour is calculated.[clarification needed]

Optionally, an application using a Direct3D 10/11/12 interface and Direct3D 10/11/12 hardware may also specify a geometry shader. This shader takes as its input some vertices of a primitive (triangle/line/point) and uses this data to generate/degenerate (or tessellate) additional primitives or to change the type of primitives, which are each then sent to the rasterizer.

D3D11.3 and D3D12 introduced Shader Model 5.1[4] and later 6.0.[5]

Shader model comparison[edit]

GPUs listed are the hardware that first supported the given specifications. Manufacturers generally support all lower shader models through drivers. Note that games may claim to require a certain DirectX version, but don't necessarily require a GPU conforming to the full specification of that version, as developers can use a higher DirectX API version to target lower-Direct3D-spec hardware; for instance DirectX 9 exposes features of DirectX7-level hardware that DirectX7 did not, targeting their fixed-function T&L pipeline.

Pixel shader comparison[edit]

Pixel shader version1.0 to 1.3[6]1.4[6]2.0[6][7]2.0a[6][7][8]2.0b[6][7][9]3.0[6][10]4.0[11]
4.1[12]
5.0[13]
Dependent texture limit468Unlimited8UnlimitedUnlimited
Texture instruction limit46*232UnlimitedUnlimitedUnlimitedUnlimited
Position registerNoNoNoNoNoYesYes
Instruction slots8+48+432 + 64512512≥ 512≥ 65536
Executed instructions8+46*2+8*232 + 6451251265536Unlimited
Texture indirections444Unlimited4UnlimitedUnlimited
Interpolated registers2 + 42 + 62 + 82 + 82 + 81032
Instruction predicationNoNoNoYesNoYesNo
Index input registersNoNoNoNoNoYesYes
Temp registers2612 to 322232324096
Constant registers8832323222416×4096
Arbitrary swizzlingNoNoNoYesNoYesYes
Gradient instructionsNoNoNoYesNoYesYes
Loop count registerNoNoNoNoNoYesYes
Face register (2-sided lighting)NoNoNoNoYesYesYes
Dynamic flow controlNoNoNoNoNoYes (24)Yes (64)
Bitwise OperatorsNoNoNoNoNoNoYes
Native IntegersNoNoNoNoNoNoYes
  • PS 1.0 — Unreleased 3dfx Rampage, DirectX 8.
  • PS 1.1 — GeForce 3, DirectX 8.
  • PS 1.2 — 3Dlabs Wildcat VP, DirectX 8.0a.
  • PS 1.3 — GeForce 4 Ti, DirectX 8.0a.
  • PS 1.4 — Radeon 8500-9250, DirectX 8.1.
  • Shader Model 2.0 — Radeon 9500-9800/X300-X600, DirectX 9.
  • Shader Model 2.0a — GeForce FX/PCX-optimized model, DirectX 9.0a.
  • Shader Model 2.0b — Radeon X700-X850 shader model, DirectX 9.0b.
  • Shader Model 3.0 — Radeon X1000 and GeForce 6, DirectX 9.0c.
  • Shader Model 4.0 — Radeon HD 2000 and GeForce 8, DirectX 10.
  • Shader Model 4.1 — Radeon HD 3000 and GeForce 200, DirectX 10.1.
  • Shader Model 5.0 — Radeon HD 5000 and GeForce 400, DirectX 11.
  • Shader Model 5.1 — GCN 1.0, Fermi+, DirectX 12 (11_0+) with WDDM 2.0.
  • Shader Model 6.0 — GCN 2.0+, Kepler+, DirectX 12 (11_0+) with WDDM 2.1.
  • Shader Model 6.1 — GCN 2.0+, Kepler+, DirectX 12 (11_0+) with WDDM 2.3.
  • Shader Model 6.2 — GCN 2.0+, Kepler+, DirectX 12 (11_0+) with WDDM 2.4.
  • Shader Model 6.3 — GCN 2.0+, Kepler+, DirectX 12 (11_0+) with WDDM 2.5.
  • Shader Model 6.4 — GCN 2.0+, Kepler+, Skylake+, DirectX 12 (11_0+) with WDDM 2.6.
  • Shader Model 6.5 — GCN 2.0+, Kepler+, Skylake+, DirectX 12 (11_0+) with WDDM 2.7.

'32 + 64' for Executed Instructions means '32 texture instructions and 64 arithmetic instructions.'

Vertex shader comparison[edit]

Vertex shader versionVS 1.1[14]VS 2.0[7][14][15]VS 2.0a[7][14][15]VS 3.0[10][14]VS 4.0[11]
VS 4.1[16]
VS 5.0[13]
# of instruction slots128256256≥ 512≥ 65536
Max # of instructions executed12810246553665536Unlimited
Instruction predicationNoNoYesYesYes
Temp registers121216324096
# constant registers≥ 96≥ 256256≥ 25616×4096
Static flow controlNoYesYesYesYes
Dynamic flow controlNoNoYesYesYes
Dynamic flow control depthN/AN/A242464
Vertex texture fetchNoNoNoYesYes
# of texture samplersN/AN/AN/A4128
Geometry instancing supportNoNoNoYesYes
Bitwise operatorsNoNoNoNoYes
Native integersNoNoNoNoYes

See also[edit]

Footnotes[edit]

  1. ^'Writing HLSL Shaders in Direct3D 9 (Windows)'. msdn.microsoft.com.
  2. ^'HLSL'. MSDN. Microsoft. Retrieved 5 January 2015.
  3. ^'Fusion Industries :: Cg and HLSL FAQ ::'. 24 August 2012. Archived from the original on 24 August 2012.
  4. ^'Shader Model 5.1 Objects (Windows)'. msdn.microsoft.com.
  5. ^'HLSL Shader Model 6.0 (Windows)'. msdn.microsoft.com.
  6. ^ abcdef'Pixel Shader Differences'. msdn.microsoft.com. 2011-02-08.
  7. ^ abcdePeeper, Craig (2004-03-15). 'Microsoft DirectX High Level Shader Language (HLSL)'(PPT). microsoft.com. pp. 5–8, 24–25.
  8. ^Shimpi, Anand Lal. 'NVIDIA Introduces GeForce FX (NV30)'.
  9. ^Wilson, Derek. 'ATI Radeon X800 Pro and XT Platinum Edition: R420 Arrives'.
  10. ^ abShader Model 3.0, Ashu Rege, NVIDIA Developer Technology Group, 2004.
  11. ^ abThe Direct3D 10 System, David Blythe, Microsoft Corporation, 2006.
  12. ^'Registers - ps_4_1 (Windows)'. msdn.microsoft.com.
  13. ^ ab'Registers - ps_5_0 (Windows)'. msdn.microsoft.com.
  14. ^ abcd'Vertex Shader Differences'. msdn.microsoft.com. 2011-02-08.
  15. ^ abShimpi, Anand Lal. 'NVIDIA Introduces GeForce FX (NV30)'.
  16. ^'Registers - vs_4_1 (Windows)'. msdn.microsoft.com.

External links[edit]

  • Programming Guide for HLSL, from Microsoft
  • Introduction to the DirectX 9 High Level Shading Language, (ATI) AMD developer central
  • DirectX Intermediate Language (DXIL) specification
Retrieved from 'https://en.wikipedia.org/w/index.php?title=High-Level_Shading_Language&oldid=956317402'

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