Английская Википедия:High-Level Shader Language

Материал из Онлайн справочника
Перейти к навигацииПерейти к поиску

Шаблон:Short description Шаблон:Use American English Шаблон:Use mdy dates

Файл:HLSL-Examples-1.PNG
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 Nvidia Cg 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.Шаблон:Citation needed

HLSL programs come in six forms: pixel shaders (fragment in GLSL), vertex shaders, geometry shaders, compute shaders, tessellation shaders (Hull and Domain shaders), and ray tracing 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 normal, tangent, and bitangent 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.

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

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

Pixel shader version 1.0 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 limit 4 6 8 Unlimited 8 Unlimited Unlimited
Texture instruction limit 4 6*2 32 Unlimited Unlimited Unlimited Unlimited
Position register Шаблон:No Шаблон:No Шаблон:No Шаблон:No Шаблон:No Шаблон:Yes Шаблон:Yes
Instruction slots 8+4 8+4 32 + 64 512 512 ≥ 512 ≥ 65536
Executed instructions 8+4 6*2+8*2 32 + 64 512 512 65536 Unlimited
Texture indirections 4 4 4 Unlimited 4 Unlimited Unlimited
Interpolated registers 2 + 4 2 + 6 2 + 8 2 + 8 2 + 8 10 32
Instruction predication Шаблон:No Шаблон:No Шаблон:No Шаблон:Yes Шаблон:No Шаблон:Yes Шаблон:No
Index input registers Шаблон:No Шаблон:No Шаблон:No Шаблон:No Шаблон:No Шаблон:Yes Шаблон:Yes
Temp registers 2 6 12 to 32 22 32 32 4096
Constant registers 8 8 32 32 32 224 16×4096
Arbitrary swizzling Шаблон:No Шаблон:No Шаблон:No Шаблон:Yes Шаблон:No Шаблон:Yes Шаблон:Yes
Gradient instructions Шаблон:No Шаблон:No Шаблон:No Шаблон:Yes Шаблон:No Шаблон:Yes Шаблон:Yes
Loop count register Шаблон:No Шаблон:No Шаблон:No Шаблон:No Шаблон:No Шаблон:Yes Шаблон:Yes
Face register (2-sided lighting) Шаблон:No Шаблон:No Шаблон:No Шаблон:No Шаблон:Yes Шаблон:Yes Шаблон:Yes
Dynamic flow control Шаблон:No Шаблон:No Шаблон:No Шаблон:No Шаблон:No Шаблон:Yes (24) Шаблон:Yes (64)
Bitwise Operators Шаблон:No Шаблон:No Шаблон:No Шаблон:No Шаблон:No Шаблон:No Шаблон:Yes
Native Integers Шаблон:No Шаблон:No Шаблон:No Шаблон:No Шаблон:No Шаблон:No Шаблон:Yes
  • PS 1.0 — Unreleased 3dfx Rampage, DirectX 8
  • PS 1.1 — GeForce 3, DirectX 8
  • PS 1.2 — 3Dlabs Wildcat VP, DirectX 8.1
  • PS 1.3 — GeForce 4 Ti, DirectX 8.1
  • PS 1.4 — Radeon 8500-9250, Matrox Parhelia, 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+, Fermi+, DirectX 12 (11_0+) with WDDM 2.0
  • Shader Model 6.0 — GCN 1+, Kepler+, DirectX 12 (11_0+) with WDDM 2.1
  • Shader Model 6.1 — GCN 1+, Kepler+, DirectX 12 (11_0+) with WDDM 2.3
  • Shader Model 6.2 — GCN 1+, Kepler+, DirectX 12 (11_0+) with WDDM 2.4
  • Shader Model 6.3 — GCN 1+, Kepler+, DirectX 12 (11_0+) with WDDM 2.5
  • Shader Model 6.4 — GCN 1+, Kepler+, Skylake+, DirectX 12 (11_0+) with WDDM 2.6
  • Shader Model 6.5 — GCN 1+, Kepler+, Skylake+, DirectX 12 (11_0+) with WDDM 2.7
  • Shader Model 6.6 — GCN 4+, Maxwell+, DirectX 12 (11_0+) with WDDM 3.0
  • Shader Model 6.7 — GCN 4+, Maxwell+, DirectX 12 (12_0+) with WDDM 3.1


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

Vertex shader comparison

Vertex shader version VS 1.1[14] VS 2.0[7][14][8] VS 2.0a[7][14][8] VS 3.0[10][14] VS 4.0[11]
VS 4.1[12]
VS 5.0[13]
# of instruction slots 128 256 256 ≥ 512 ≥ 65536
Max # of instructions executed 128 1024 65536 65536 Unlimited
Instruction predication Шаблон:No Шаблон:No Шаблон:Yes Шаблон:Yes Шаблон:Yes
Temp registers 12 12 16 32 4096
# constant registers ≥ 96 ≥ 256 256 ≥ 256 16×4096
Static flow control Шаблон:No Шаблон:Yes Шаблон:Yes Шаблон:Yes Шаблон:Yes
Dynamic flow control Шаблон:No Шаблон:No Шаблон:Yes Шаблон:Yes Шаблон:Yes
Dynamic flow control depth Шаблон:N/A Шаблон:N/A 24 24 64
Vertex texture fetch Шаблон:No Шаблон:No Шаблон:No Шаблон:Yes Шаблон:Yes
# of texture samplers Шаблон:N/A Шаблон:N/A Шаблон:N/A 4 128
Geometry instancing support Шаблон:No Шаблон:No Шаблон:No Шаблон:Yes Шаблон:Yes
Bitwise operators Шаблон:No Шаблон:No Шаблон:No Шаблон:No Шаблон:Yes
Native integers Шаблон:No Шаблон:No Шаблон:No Шаблон:No Шаблон:Yes

See also

Footnotes

Шаблон:Reflist

External links

Партнерские ресурсы
Криптовалюты
Магазины
Хостинг
Разное

  1. ↑ Шаблон:Cite web
  2. ↑ Шаблон:Cite web
  3. ↑ Шаблон:Cite web
  4. ↑ Шаблон:Cite web
  5. ↑ Шаблон:Cite web
  6. ↑ 6,0 6,1 6,2 6,3 6,4 6,5 Шаблон:Cite web
  7. ↑ 7,0 7,1 7,2 7,3 7,4 Шаблон:Cite web
  8. ↑ 8,0 8,1 8,2 Шаблон:Cite web
  9. ↑ Шаблон:Cite web
  10. ↑ 10,0 10,1 Shader Model 3.0, Ashu Rege, NVIDIA Developer Technology Group, 2004.
  11. ↑ 11,0 11,1 The Direct3D 10 System, David Blythe, Microsoft Corporation, 2006.
  12. ↑ 12,0 12,1 Шаблон:Cite web
  13. ↑ 13,0 13,1 Шаблон:Cite web
  14. ↑ 14,0 14,1 14,2 14,3 Шаблон:Cite web
Источник — http://wikihandbk.com/ruwiki/index.php?title=Английская_Википедия:High-Level_Shader_Language&oldid=15237675