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Magnifier.fx

Preset for Hunt Showdown
Created by TsarofKislev
Added May 23, 2023
Shader used: ReShade
Preset description:
mg
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uniform float2 DrawPosition < ui_type = "drag"; ui_min = 0.0; ui_max = 1.0; ui_step = 0.001; ui_tooltip = "The position on your on screen where the magnifier will draw (does not work in when the magnifier is set to fullscreen)."; > = float2(0.5, 0.5); uniform float2 MagnifyPosition < ui_type = "drag"; ui_min = 0.0; ui_max = 1.0; ui_step = 0.001; ui_tooltip = "The position on your on screen that the magnifier will magnify (you'll probably want to leave this at (0.5, 0.5))."; > = float2(0.5, 0.5); uniform int Shape < ui_type = "combo"; ui_type = "combo"; ui_items = "Circle\0Rectangle\0Fullscreen\0"; ui_tooltip = "Choose the shape of the magnifier."; > = 0; uniform int Filtering < ui_type = "combo"; ui_items = "Linear\0Point\0"; ui_tooltip = "Choose either linear or no filtering for the output image."; > = 0; uniform float CircleRadius < ui_type = "drag"; ui_min = 0.0; ui_max = 1000.0; ui_step = 1.0; ui_tooltip = "The radius in pixels of the magnifier when it is drawn as a circle."; > = 250.0; uniform float2 RectangleHalfExtent < ui_type = "drag"; ui_min = 0.0; ui_max = 1000.0; ui_step = 1.0; ui_tooltip = "The half size of the magnifier in pixels when it is drawn as a rectangle."; > = float2(300.0, 200.0); uniform float ZoomLevel < ui_type = "drag"; ui_min = 1.0; ui_max = 10.0; ui_step = 0.01; ui_tooltip = "How much the magnifier will scale things."; > = 2.5; uniform float CircleFeathering < ui_type = "drag"; ui_min = 0.0; ui_max = 1000.0; ui_step = 1.0; ui_tooltip = "Size of feathered edges in pixels, only works for the circle setting right now."; > = 0.0; uniform float MagnifierOpacity < ui_type = "drag"; ui_min = 0.0; ui_max = 1.0; ui_step = 0.001; ui_tooltip = "How much opacity the magnifier has."; > = 1.0; #include "ReShade.fxh" #define MODE_CIRCLE 0 #define MODE_RECTANGLE 1 #define MODE_FULLSCREEN 2 #define FILTER_LINEAR 0 #define FILTER_POINT 1 sampler2D pointBuffer { Texture = ReShade::BackBufferTex; MinFilter = POINT; MagFilter = POINT; MipFilter = POINT; AddressU = BORDER; AddressV = BORDER; }; float2 uv_to_screen(float2 uv) { return float2(uv.x * ReShade::ScreenSize.x, uv.y * ReShade::ScreenSize.y); } bool outside_bounds(float2 p) { return p.x < 0.0 || p.x > 1.0 || p.y < 0.0 || p.y > 1.0; } float circle_feathering_amt(float feather_size, float2 offset, float circle_radius) { float magnitude = sqrt(offset.x * offset.x + offset.y * offset.y); float startRadius = circle_radius - feather_size; if (magnitude >= circle_radius) return 1.0; if (magnitude <= startRadius) return 0.0; float falloff = (magnitude - startRadius) / feather_size; return falloff * falloff; // Squared falloff instead of linear } bool is_in_circle(float2 p, float2 centre, float radius) { return (p.x - centre.x) * (p.x - centre.x) + (p.y - centre.y) * (p.y - centre.y) <= radius * radius; } bool is_in_rect(float2 p, float2 centre, float2 half_extent) { return abs(p.x - centre.x) <= half_extent.x && abs(p.y - centre.y) <= half_extent.y; } float4 PS_Magnifier(float4 pos : SV_POSITION, float2 uv : TEXCOORD) : SV_TARGET { float scale = 1.0 / ZoomLevel; // Don't respect the user defined magnifier position if fullscreen has been selected. float2 draw_pos = Shape == MODE_FULLSCREEN ? float2(0.5, 0.5) : DrawPosition; // Decide whether this pixel is within the drawing area of the magnifier. bool magnifiy = (Shape == MODE_CIRCLE && is_in_circle(uv_to_screen(uv), uv_to_screen(draw_pos), CircleRadius)) || (Shape == MODE_RECTANGLE && is_in_rect(uv_to_screen(uv), uv_to_screen(draw_pos), RectangleHalfExtent)) || (Shape == MODE_FULLSCREEN); if (magnifiy) { // Essentially offset from the magnifier and take a pixel to magnify (and there's also some scaling stuff, too). float2 offset = uv - draw_pos; float2 take_pos = MagnifyPosition + offset * scale; if (outside_bounds(take_pos)) { return float4(0.0, 0.0, 0.0, 1.0); } else { // Refactor once rectangular feathering works float4 behind_pixel = tex2D(ReShade::BackBuffer, uv); float opacity = (Shape == MODE_CIRCLE ? circle_feathering_amt(CircleFeathering, uv_to_screen(offset), CircleRadius) : 0.0); return lerp(behind_pixel, lerp(Filtering == FILTER_LINEAR ? tex2D(ReShade::BackBuffer, take_pos) : tex2D(pointBuffer, take_pos), behind_pixel, opacity), MagnifierOpacity); } } else { return tex2D(ReShade::BackBuffer, uv); } } technique Magnifier { pass { VertexShader = PostProcessVS; PixelShader = PS_Magnifier; } }

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