DxSetShaderValue: Difference between revisions

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m (moved SetShaderValue to DxSetShaderValue: Function renamed)
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==Syntax==  
==Syntax==  
<syntaxhighlight lang="lua">
<syntaxhighlight lang="lua">
bool setShaderValue ( element shader, string parameterName, mixed value )
bool dxSetShaderValue ( element shader, string parameterName, mixed value )
</syntaxhighlight>  
</syntaxhighlight>  


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==Example==  
==Example==  
<syntaxhighlight lang="lua">
<syntaxhighlight lang="lua">
myShader = createShader( "hello.fx" )
myShader = dxCreateShader( "hello.fx" )
myTexture = createTexture( "man.png" )
myTexture = dxCreateTexture( "man.png" )
setShaderValue( myShader, "texure0", myTexture )                -- Set a texture
dxSetShaderValue( myShader, "texure0", myTexture )                -- Set a texture
setShaderValue( myShader, "bShowThing", true )                  -- Set a bool                   
dxSetShaderValue( myShader, "bShowThing", true )                  -- Set a bool                   
setShaderValue( myShader, "speed", 2.4 )                        -- Set a number
dxSetShaderValue( myShader, "speed", 2.4 )                        -- Set a number
setShaderValue( myShader, "positionOfCheese", 100, 200, 300 )  -- Set a list of numbers
dxSetShaderValue( myShader, "positionOfCheese", 100, 200, 300 )  -- Set a list of numbers
</syntaxhighlight>
</syntaxhighlight>


==See Also==
==See Also==
{{Drawing_functions}}
{{Drawing_functions}}

Revision as of 11:54, 13 June 2011

Only available in 1.1 This sets a named parameter for a shader element

Syntax

bool dxSetShaderValue ( element shader, string parameterName, mixed value )

Required Arguments

  • shader: The shader element whose parameter is to be changed
  • parameterName: The name of parameter
  • value: The value to set, which can be a texture, a bool, a number, a table of numbers or a list of numbers

Returns

Returns true if the shader element's parameter was successfully changed, false otherwise.

Example

myShader = dxCreateShader( "hello.fx" )
myTexture = dxCreateTexture( "man.png" )
dxSetShaderValue( myShader, "texure0", myTexture )                -- Set a texture
dxSetShaderValue( myShader, "bShowThing", true )                  -- Set a bool                  
dxSetShaderValue( myShader, "speed", 2.4 )                        -- Set a number
dxSetShaderValue( myShader, "positionOfCheese", 100, 200, 300 )   -- Set a list of numbers

See Also


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