ProjectArcade

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/**
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 * Border version 1.4.1
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 *
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 * -- Version 1.0 by Oomek --
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 * Fixes light, one pixel thick border in some games when forcing MSAA like i.e. Dishonored
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 * -- Version 1.1 by CeeJay.dk --
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 * Optimized the shader. It still does the same but now it runs faster.
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 * -- Version 1.2 by CeeJay.dk --
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 * Added border_width and border_color features
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 * -- Version 1.3 by CeeJay.dk --
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 * Optimized the performance further
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 * -- Version 1.4 by CeeJay.dk --
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 * Added the border_ratio feature
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 * -- Version 1.4.1 by CeeJay.dk --
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 * Cleaned up setting for Reshade 3.x
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 */
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#include "ReShade.fxh"
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#include "ReShadeUI.fxh"
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/*
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uniform float2 border_width <
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	ui_type = "input";
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	ui_label = "Size";
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	ui_tooltip = "Measured in pixels. If this is set to zero then the ratio will be used instead.";
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> = float2(15.0, 15.0);
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*/
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uniform float2 border_width <
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	ui_type = "drag";
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	ui_label = "Size";
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	ui_tooltip = "Measured in pixels. If this is set to zero then the ratio will be used instead.";
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	ui_min = 0.0; ui_max = (BUFFER_WIDTH * 0.5);
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	ui_step = 1.0;
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	> = float2(15.0, 15.0);
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uniform float border_ratio <
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	ui_type = "input";
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	ui_label = "Size Ratio";
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	ui_tooltip = "Set the desired ratio for the visible area.";
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> = 2.35;
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uniform float3 border_color <
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	ui_type = "color";
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	ui_label = "Border Color";
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> = float3(255.0, 255.0, 255.0);
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float3 BorderPass(float4 vpos : SV_Position, float2 texcoord : TexCoord) : SV_Target
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{
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	float3 color = tex2D(ReShade::BackBuffer, texcoord).rgb;
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	// -- calculate the right border_width for a given border_ratio --
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	float2 border_width_variable = border_width;
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	if (border_width.x == -border_width.y) // If width is not used
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		if (BUFFER_ASPECT_RATIO < border_ratio)
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			border_width_variable = float2(0.0, (BUFFER_HEIGHT - (BUFFER_WIDTH / border_ratio)) * 0.5);
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		else
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			border_width_variable = float2((BUFFER_WIDTH - (BUFFER_HEIGHT * border_ratio)) * 0.5, 0.0);
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	float2 border = (BUFFER_PIXEL_SIZE * border_width_variable); // Translate integer pixel width to floating point
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	float2 within_border = saturate((-texcoord * texcoord + texcoord) - (-border * border + border)); // Becomes positive when inside the border and zero when outside
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	return all(within_border) ? color : border_color;
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}
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technique Border
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{
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	pass
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	{
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		VertexShader = PostProcessVS;
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		PixelShader = BorderPass;
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	}
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}
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