Directx 9 0 Shader Model 3 0

Posted : admin | On 16-09-2021

Vs30 - Direct3D Shader Model 3.0 vertex profile for DirectX 9. Synopsis vs30 Description. This Direct3D profile corresponds to the per-vertex functionality introduced by GeForce FX (NV3x) for DirectX 9. The compiler output for this profile conforms to the textual assembly defined by DirectX 9's Vertex Shader 3.0 shader format. Caps in addition to Shader Models. In DirectX 9, devices can express their abilities via a base shader version plus some optional caps. At this point, the only “base” shader versions beyond 1.xare the 2.0 and 3.0 shader versions. Other differences are expressed via caps: –D3DCAPS9.PS20Caps –D3DCAPS9.VS20Caps.

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To handle the diversity of video cards in new and existing machines, Microsoft Direct3D 11 introduces the concept of feature levels. This topic discusses Direct3D feature levels.

Each video card implements a certain level of Microsoft DirectX (DX) functionality depending on the graphics processing units (GPUs) installed. In prior versions of Microsoft Direct3D, you could find out the version of Direct3D the video card implemented, and then program your application accordingly.

With Direct3D 11, a new paradigm is introduced called feature levels. A feature level is a well-defined set of GPU functionality. For instance, the 9_1 feature level implements the functionality that was implemented in Microsoft Direct3D 9, which exposes the capabilities of shader models ps_2_x and vs_2_x, while the 11_0 feature level implements the functionality that was implemented in Direct3D 11.

Now when you create a device, you can attempt to create a device for the feature level that you want to request. If the device creation works, that feature level exists, if not, the hardware does not support that feature level. You can either try to recreate a device at a lower feature level or you can choose to exit the application. For more info about creating a device, see the D3D11CreateDevice function.

Using feature levels, you can develop an application for Direct3D 9, Microsoft Direct3D 10, or Direct3D 11, and then run it on 9, 10 or 11 hardware (with some exceptions; for example, new 11 features will not run on an existing 9 card). Here is a couple of other basic properties of feature levels:

A GPU that allows a device to be created meets or exceeds the functionality of that feature level.
A feature level always includes the functionality of previous or lower feature levels.
A feature level does not imply performance, only functionality. Performance is dependent on hardware implementation.
Choose a feature level when you create a Direct3D 11 device.

For information about limitations creating nonhardware-type devices on certain feature levels, see Limitations Creating WARP and Reference Devices.

To assist you in deciding what feature level to design with, compare the features for each feature level.

The 10Level9 Reference section lists the differences between how various ID3D11Device and ID3D11DeviceContext methods behave at various 10Level9 feature levels.

Formats of version numbers

There are three formats for Direct3D versions, shader models, and feature levels.

Direct3D versions use a period; for example, Direct3D 12.0.
Shader models use a period; for example, shader model 5.1.
Feature levels use an underscore; for example, feature level 12_0.

Feature support for feature levels 12_1 through 9_3

3d Shader 3.0 Video Driver

The following features are available for the feature levels listed. The headings across the top row are Direct3D feature levels. The headings in the left-hand column are features. Also see Footnotes for the tables.

Feature Feature Level	12_1⁰	12_0⁰	11_1¹	11_0	10_1	10_0	9_3⁷
Shader Model (D3D11)	5.0²	5.0²	5.0²	5.0²	4.x	4.0	2.0 (4_0_level_9_3) [vs_2_a/ps_2_x]⁵
Shader Model (D3D12)	5.1²	5.1²	5.1²	5.1²	N/A	N/A	N/A
Tiled resources	Tier2⁶	Tier2⁶	Optional	Optional	No	No	No
Conservative Rasterization	Tier1⁶	Optional	Optional	No	No	No	No
Rasterizer Order Views	Yes	Optional	Optional	No	No	No	No
Min/Max Filters	Yes	Yes	Optional	No	No	No	No
Map Default Buffer	Optional	Optional	Optional	Optional	No	No	No
Shader Specified Stencil Reference Value	Optional	Optional	Optional	No	No	No	No
Typed Unordered Access View Loads	18 formats, more optional	18 formats, more optional	3 formats, more optional	3 formats, more optional	No	No	No
Geometry Shader	Yes	Yes	Yes	Yes	Yes	Yes	No
Stream Out	Yes	Yes	Yes	Yes	Yes	Yes	No
DirectCompute / Compute Shader	Yes	Yes	Yes	Yes	Optional	Optional	N/A
Feature Feature Level	12_1⁰	12_0⁰	11_1¹	11_0	10_1	10_0	9_3⁷
Hull and Domain Shaders	Yes	Yes	Yes	Yes	No	No	No
Texture Resource Arrays	Yes	Yes	Yes	Yes	Yes	Yes	No
Cubemap Resource Arrays	Yes	Yes	Yes	Yes	Yes	No	No
BC4/BC5 Compression	Yes	Yes	Yes	Yes	Yes	Yes	No
BC6H/BC7 Compression	Yes	Yes	Yes	Yes	No	No	No
Alpha-to-coverage	Yes	Yes	Yes	Yes	Yes	Yes	No
Extended Formats (BGRA, and so on)	Yes	Yes	Yes	Yes	Optional	Optional	Yes
10-bit XR High Color Format	Yes	Yes	Yes	Yes	Optional	Optional	N/A
Logic Operations (Output Merger)	Yes	Yes	Yes	Optional¹	Optional¹	Optional¹	No
Target-independent rasterization	Yes	Yes	Yes	No	No	No	No
Multiple render target(MRT) with ForcedSampleCount 1	Yes	Yes	Yes	Optional¹	Optional¹	Optional¹	No
UAV slots	64	64	64	8	1	1	N/A
Feature Feature Level	12_1⁰	12_0⁰	11_1¹	11_0	10_1	10_0	9_3⁷
UAVs at every stage	Yes	Yes	Yes	No	No	No	N/A
Max forced sample count for UAV-only rendering	16	16	16	8	N/A	N/A	N/A
Constant buffer offsetting and partial updates	Yes	Yes	Yes	Optional¹	Optional¹	Optional¹	Yes¹
16 bits per pixel (bpp) formats	Yes	Yes	Yes	Optional¹	Optional¹	Optional¹	Optional¹
Max Texture Dimension	16384	16384	16384	16384	8192	8192	4096
Max Cubemap Dimension	16384	16384	16384	16384	8192	8192	4096
Max Volume Extent	2048	2048	2048	2048	2048	2048	256
Max Texture Repeat	16384	16384	16384	16384	8192	8192	8192
Max Anisotropy	16	16	16	16	16	16	16
Max Primitive Count	2^32 – 1	2^32 – 1	2^32 – 1	2^32 – 1	2^32 – 1	2^32 – 1	1048575
Max Vertex Index	2^32 – 1	2^32 – 1	2^32 – 1	2^32 – 1	2^32 – 1	2^32 – 1	1048575
Max Input Slots	32	32	32	32	32	16	16
Simultaneous Render Targets	8	8	8	8	8	8	4
Occlusion Queries	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Feature Feature Level	12_1⁰	12_0⁰	11_1¹	11_0	10_1	10_0	9_3⁷
Separate Alpha Blend	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Mirror Once	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Overlapping Vertex Elements	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Independent Write Masks	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Instancing	Yes	Yes	Yes	Yes	Yes	Yes	Yes⁷
Nonpowers-of-2 conditionally³	No	No	No	No	No	No	Yes
Nonpowers-of-2 unconditionally⁴	Yes	Yes	Yes	Yes	Yes	Yes	No

Feature support for feature levels 9_2 and 9_1

Feature Feature Level	9_2	9_1
Shader Model (D3D11)	2.0 (4_0_level_9_1)	2.0 (4_0_level_9_1)
Shader Model (D3D12)	N/A	N/A
Tiled resources	No	No
Conservative Rasterization	No	No
Rasterizer Order Views	No	No
Min/Max Filters	No	No
Map Default Buffer	No	No
Shader Specified Stencil Reference Value	No	No
Typed Unordered Access View Loads	No	No
Geometry Shader	No	No
Stream Out	No	No
DirectCompute / Compute Shader	N/A	N/A
Hull and Domain Shaders	No	No
Texture Resource Arrays	No	No
Cubemap Resource Arrays	No	No
BC4/BC5 Compression	No	No
Feature Feature Level	9_2	9_1
BC6H/BC7 Compression	No	No
Alpha-to-coverage	No	No
Extended Formats (BGRA, and so on)	Yes	Yes
10-bit XR High Color Format	N/A	N/A
Logic Operations (Output Merger)	No	No
Target-independent rasterization	No	No
Multiple render target(MRT) with ForcedSampleCount 1	No	No
UAV slots	N/A	N/A
UAVs at every stage	N/A	N/A
Max forced sample count for UAV-only rendering	N/A	N/A
Constant buffer offsetting and partial updates	Yes¹	Yes¹
16 bits per pixel (bpp) formats	Optional¹	Optional¹
Max Texture Dimension	2048	2048
Max Cubemap Dimension	512	512
Max Volume Extent	256	256
Max Texture Repeat	2048	128
Feature Feature Level	9_2	9_1
Max Anisotropy	16	2
Max Primitive Count	1048575	65535
Max Vertex Index	1048575	65534
Max Input Slots	16	16
Simultaneous Render Targets	1	1
Occlusion Queries	Yes	No
Separate Alpha Blend	Yes	No
Mirror Once	Yes	No
Overlapping Vertex Elements	Yes	No
Independent Write Masks	No	No
Instancing	No	No
Nonpowers-of-2 conditionally³	Yes	Yes
Nonpowers-of-2 unconditionally⁴	No	No

Footnotes for the tables

⁰ Requires the Direct3D 11.3 or Direct3D 12 runtime.

¹ Requires the Direct3D 11.1 runtime.

² Shader model 5.0 and above can optionally support double-precision shaders, extended double-precision shaders, the SAD4 shader instruction, and partial-precision shaders. To determine the shader model 5.0 options that are available for DirectX 11, call ID3D11Device::CheckFeatureSupport. Some compatibility depends on what hardware you are running on. Shader model 5.1 and above are only supported through the DirectX 12 API, regardless of the feature level that's being used. DirectX 11 only supports up to shader model 5.0. The DirectX 12 API only goes down to feature level 11_0.

³ At feature levels 9_1, 9_2 and 9_3, the display device supports the use of 2-D textures with dimensions that are not powers of two under two conditions. First, only one MIP-map level for each texture can be created, and second, no wrap sampler modes for textures are allowed (that is, the AddressU, AddressV, and AddressW members of D3D11_SAMPLER_DESC cannot be set to D3D11_TEXTURE_ADDRESS_WRAP).

⁴ At feature levels 10_0, 10_1 and 11_0, the display device unconditionally supports the use of 2-D textures with dimensions that are not powers of two.

⁵ Vertex Shader 2a with 256 instructions, 32 temporary registers, static flow control of depth 4, dynamic flow control of depth 24, and D3DVS20CAPS_PREDICATION. Pixel Shader 2x with 512 instructions, 32 temporary registers, static flow control of depth 4, dynamic flow control of depth 24, D3DPS20CAPS_ARBITRARYSWIZZLE, D3DPS20CAPS_GRADIENTINSTRUCTIONS, D3DPS20CAPS_PREDICATION, D3DPS20CAPS_NODEPENDENTREADLIMIT, and D3DPS20CAPS_NOTEXINSTRUCTIONLIMIT.

⁶ Higher tiers optional.

Shader Model 30

⁷ For Feature Level 9_3, the only rendering methods supported are Draw, DrawIndexed, and DrawIndexInstanced. Also for Feature Level 9_3, point list rendering is supported only for rendering via Draw.

For details of format support at different hardware feature levels, refer to:

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