[Unity] Shader (shader) texture map

In shader, we can also add texture maps in addition to the various light treatments we can set.

Use the settexture command to assign a texture to a shader.

Example code:

Shader"sbin/ff2" {    //Map SamplingProperties {//variable Name ("description name", type) = value_color ("Main body", color) = (1,1,1,1) _ambient ("Ambient Light", color) = (0.3,0.3,0.3,0.3) _specular ("High-Gloss", color) = (1,1,1,1)        //variable Name ("description name", Range (region minimum, region maximum) = default value_shininess ("High light intensity", Range (0,8))=4_emission ("Spontaneous Light", color) = (1,1,1,1) _constant ("Transparent channel", color) = (1,1,1,0.3) _maintex ("Textures", 2d) =""_secondtex ("Second Texture", 2d) =""} subshader {Tags {"Queue" = "Transparent"}Pass {Blend srcalpha oneminussrcalpha material {Diffuse[_color] ambien            T[_ambient] specular[_specular] shininess[_shininess] emission[_emission] } Lighting on//Enable lightingSeparatespecular on//Specular Highlights//Texture PropertiesSettexture[_maintex] {//merges the current texture * All the materials and the color of care in front//primary represents the color after vertex illumination//Double Color * *//Quad ColorCombine texture * PrimaryDouble            }            //Second TextureSettexture[_secondtex] {//blends with the currently applied texture to all previously sampled results//Combine texture * Previous double//, the parameter after the number, it just takes the texture alpha channel, the front all the color alpha value is invalidatedconstantcolor[_constant] Combine texture* PreviousDouble, Texture *constant}        }    }    //FallBack "Diffuse"}

：

Default Render Order Graph:

instruction Description :

settexture applying textures

Combine How to use when blending textures

Shader"examples/2 Alpha Blended Textures"{Properties {_maintex ("Base (RGB)", 2D) =" White"{} _blendtex ("Alpha Blended (RGBA)", 2D) =" White"{}} subshader {Pass {//Apply Base TextureSetTexture [_maintex] {combine texture}//Blend in the alpha texture using the LERP operatorSetTexture [_blendtex] {Combine texture lerp (texture) Previous}}} }

constantcolor Transparent Channel

Blend to make the final mix of alpha, making transparent game objects

Tags Control Rendering order

"Some notes in the official documentation"

Blend operations (mixed operation)

You can use the blending method:

Add	ADD source and destination together. Source and Target are superimposed together
Sub	Subtract destination from source. Subtract from source
Revsub	Subtract source from destination.
Min	Use the smaller of source and destination.
Max	Use the larger of source and destination.
Logicalclear	Logical operation:clear (0) DX11.1only.
Logicalset	Logical Operation:set (1) DX11.1only.
Logicalcopy	Logical operation:copy (s) DX11.1only.
logicalcopyinverted	Logical operation:copy Inverted (!s) DX11.1only.
Logicalnoop	Logical Operation:noop (d) DX11.1only.
Logicalinvert	Logical Operation:invert (!d) DX11.1only.
LogicalAnd	Logical Operation:and (S & D) DX11.1only.
Logicalnand	Logical Operation:nand! (S & D) DX11.1only.
Logicalor	Logical Operation:or (S | d) DX11.1only.
Logicalnor	Logical Operation:nor! (S | d) DX11.1only.
Logicalxor	Logical Operation:xor (s ^ d) DX11.1only.
Logicalequiv	Logical operation:equivalence! (s ^ d) DX11.1only.
Logicalandreverse	Logical Operation:reverse and (S &!d) DX11.1only.
logicalandinverted	Logical operation:inverted and (!s & D) DX11.1only.
Logicalorreverse	Logical operation:reverse Or (S |!d) DX11.1only.
logicalorinverted	Logical operation:inverted Or (!s | d) DX11.1only.

Blend factors (blend factor)

All following properties is valid for both Srcfactor & Dstfactor in the Blend command. Source refers to the calculated color, Destination are the color already on the screen . The blend factors is ignored if Blendop is using logical operations.

All instructions are mixed using the Srcfactor & Dstfactor method. The source refers to the color to be computed, and the destination is the color that is currently being displayed on the screen. If the logical operator is omitted, the Blendop method is used.

One	The value of One-use this to let either the source or the destination color come through fully.
Zero	The value zero-use this to remove either the source or the destination values.
Srccolor	The value of this stage was multiplied by the source color value.
Srcalpha	The value of this stage was multiplied by the source alpha value.
Dstcolor	The value of this stage was multiplied by frame buffer source color value.
Dstalpha	The value of this stage was multiplied by frame buffer source alpha value.
Oneminussrccolor	The value of this stage was multiplied by (1-source color).
Oneminussrcalpha	The value of this stage was multiplied by (1-source Alpha).
Oneminusdstcolor	The value of this stage was multiplied by (1-destination color).
Oneminusdstalpha	The value of this stage was multiplied by (1-destination Alpha).

Details (detail)

The following are the most common types of blends:

Blend SrcAlpha OneMinusSrcAlpha // 透明通道混合Blend One One // Additive 叠加Blend OneMinusDstColor One // Soft Additive 柔性叠加Blend DstColor Zero // Multiplicative 相乘Blend DstColor SrcColor // 2x MultiplicativeTwice times multiplication

Example (example)Here's a small example where you can add a textured texture to the screen:

" Simple Additive " {    Properties {        _maintex ("Texture to blend""black " {}    }    subshader {        "Queue""Transparent  "  }        Pass {            Blend one one            settexture [_maintex] {combine texture}        }    }}< /c22>

Tags syntax

    Tags { "TagName1" = "Value1" "TagName2" = "Value2" }

Subshader syntax

Subshader { [Tags] [CommonState] Passdef [Passdef ...] }

[Unity] Shader (shader) texture map