DxDrawBluredRectangle

2021-07-04T09:20:48Z

WaRuS: Created page with "{{Useful Function}} <lowercasetitle/> __NOTOC__ This function draws a 2D blured rectangle on the screen - rendered for one frame. This should be used in conjunction with onCli..."

{{Useful Function}}
<lowercasetitle/>
__NOTOC__
This function draws a 2D blured rectangle on the screen - rendered for one frame. This should be used in conjunction with onClientRender for continuous display.

== Syntax ==
<syntaxhighlight lang="lua">
bool dxDrawBluredRectangle ( float x, float y, float width, float height )
</syntaxhighlight>

=== Required Arguments ===
* '''x:''' An float representing the '''absolute''' origin X position of the rectangle, represented by pixels on the screen.
* '''y:''' An float representing the '''absolute''' origin Y position of the rectangle, represented by pixels on the screen.
* '''width:''' An float representing the width of the rectangle, drawn in a ''right'' direction from the origin.
* '''height:''' An float representing the height of the rectangle, drawn in a ''downwards'' direction from the origin.

=== Required Files ===
[https://cdn.discordapp.com/attachments/851000636484747274/861170045651910686/mta-helper.fx mta-helper.fx],
[https://cdn.discordapp.com/attachments/851000636484747274/861170042737393664/fxBlurV.fx fxBlurV.fx],
[https://cdn.discordapp.com/attachments/851000636484747274/861170040039669760/fxBlurH.fx fxBlurH.fx],
[https://cdn.discordapp.com/attachments/851000636484747274/861170037255307294/blurV.fx blurV.fx],
[https://cdn.discordapp.com/attachments/851000636484747274/861170034495455232/blurH.fx blurH.fx]

=== Returns ===
Returns true if the operation was successful, false otherwise.

== Code ==
<section name="Client" class="client" show="true">
<syntaxhighlight lang="lua">
local scx, scy = guiGetScreenSize()

Settings = {}
Settings.var = {}
Settings.var.blur = 1
Settings.var.optim = 4
Settings.screenRectangle = {}

local current

function createShader()
myScreenSource = dxCreateScreenSource( scx/Settings.var.optim, scy/Settings.var.optim )
blurHShader,tecName = dxCreateShader( "shaders/blurH.fx" )
blurVShader,tecName = dxCreateShader( "shaders/blurV.fx" )
bAllValid = myScreenSource and blurHShader and blurVShader
end
createShader()

function blur_createBlurRenctagle(bool)
if bool then
Settings.screenRectangle = {pos_x, pos_y, size_x, size_y}
createShader()
addEventHandler( "onClientHUDRender", root, blur_render2)
else
if isElement (blurHShader) and isElement (blurVShader) then
Settings.screenRectangle = {}
destroyElement (blurVShader)
destroyElement (blurHShader)
end
removeEventHandler( "onClientHUDRender", root, blur_render2)
end
end

function preRender ()
if not Settings.var then
return
end
RTPool.frameStart()
dxUpdateScreenSource( myScreenSource )
current = myScreenSource
current = applyGBlurH( current, Settings.var.blur )
current = applyGBlurV( current, Settings.var.blur )
dxSetRenderTarget()
end
addEventHandler ("onClientRender", root, preRender)

function dxDrawBluredRectangle (pos_x, pos_y, size_x, size_y, color)
if bAllValid then
dxDrawImageSection ( pos_x, pos_y, size_x, size_y, pos_x/Settings.var.optim, pos_y/Settings.var.optim, size_x/Settings.var.optim, size_y/Settings.var.optim, current, 0,0,0, color)
end
end

function applyGBlurH( Src, blur )
if not Src then return nil end
local mx,my = dxGetMaterialSize( Src )
local newRT = RTPool.GetUnused(mx,my)
if not newRT then return nil end
dxSetRenderTarget( newRT, true )
dxSetShaderValue( blurHShader, "TEX0", Src )
dxSetShaderValue( blurHShader, "TEX0SIZE", mx,my )
dxSetShaderValue( blurHShader, "BLUR", blur )
dxDrawImage( 0, 0, mx, my, blurHShader )
return newRT
end

function applyGBlurV( Src, blur )
if not Src then return nil end
local mx,my = dxGetMaterialSize( Src )
local newRT = RTPool.GetUnused(mx,my)
if not newRT then return nil end
dxSetRenderTarget( newRT, true )
dxSetShaderValue( blurVShader, "TEX0", Src )
dxSetShaderValue( blurVShader, "TEX0SIZE", mx,my )
dxSetShaderValue( blurVShader, "BLUR", blur )
dxDrawImage( 0, 0, mx,my, blurVShader )
return newRT
end

RTPool = {}
RTPool.list = {}

function RTPool.frameStart()
for rt,info in pairs(RTPool.list) do
info.bInUse = false
end
end

function RTPool.GetUnused( mx, my )
for rt,info in pairs(RTPool.list) do
if not info.bInUse and info.mx == mx and info.my == my then
info.bInUse = true
return rt
end
end

local rt = dxCreateRenderTarget( mx, my )
if rt then
RTPool.list[rt] = { bInUse = true, mx = mx, my = my }
end
return rt
end</syntaxhighlight>
</section>

== Example ==
<section name="Client" class="client" show="true">
<syntaxhighlight lang="lua">
local scx, scy = guiGetScreenSize()

function drawBluredRectangle()
dxDrawBluredRectangle( scx/3.8, scy/3.8, scx/2.02, scy/2 )
end

addEventHandler("onClientRender", root, drawBluredRectangle)</syntaxhighlight>
</section>

===== Author: fiXlly, WaRuS =====

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DxDrawBluredRectangle