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Histogram Pixel Shader for ReShade 3/4
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| /** | |
| * Copyright (C) 2015-2016 Ganossa (mediehawk@gmail.com) | |
| * | |
| * Permission is hereby granted, free of charge, to any person obtaining a copy of | |
| * this software and associated documentation files (the "Software"), to deal in | |
| * the Software with restriction, including without limitation the rights to | |
| * use and/or sell copies of the Software, and to permit persons to whom the Software | |
| * is furnished to do so, subject to the following conditions: | |
| * | |
| * The above copyright notice and the permission notices (this and below) shall | |
| * be included in all copies or substantial portions of the Software. | |
| * | |
| * Permission needs to be specifically granted by the author of the software to any | |
| * person obtaining a copy of this software and associated documentation files | |
| * (the "Software"), to deal in the Software without restriction, including without | |
| * limitation the rights to copy, modify, merge, publish, distribute, and/or | |
| * sublicense the Software, and subject to the following conditions: | |
| * | |
| * The above copyright notice and the permission notices (this and above) shall | |
| * be included in all copies or substantial portions of the Software. | |
| * | |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
| * SOFTWARE. | |
| */ | |
| // ????-??-?? / Ported to Reshade 3 / v00d00m4n | |
| // 2021-01-19 / code rewrite and feature updates / hibiyasleep | |
| // 2021-05-12 / press Ctrl/Alt key to temporally switch mode, split Sample/Palette resolution / hibiyasleep | |
| #include "ReShade.fxh" | |
| uniform bool Histogram_Mix < | |
| ui_tooltip = "Mixes the colors in the histogram."; | |
| > = true; | |
| uniform bool Histogram_View < | |
| ui_tooltip = "Temporal non-mix viewmode switch."; | |
| > = true; | |
| // not using configuration UI because it's required from texture declaration. | |
| #ifndef Histogram_Sample_Resolution | |
| #define Histogram_Sample_Resolution 256f | |
| #endif | |
| #ifndef Histogram_Palette_Resolution | |
| #define Histogram_Palette_Resolution 128f | |
| #endif | |
| //uniform int Histogram_Resolution < | |
| // ui_type = "drag"; | |
| // ui_min = 32; ui_max = 1024; | |
| // ui_tooltip = "Adjust sample resolution (affects performance)"; | |
| //> = 256; | |
| uniform bool Histogram_Ctrl_Down < | |
| source = "key"; | |
| keycode = 0x11; | |
| mode = ""; | |
| >; | |
| uniform bool Histogram_Alt_Down < | |
| source = "key"; | |
| keycode = 0x12; | |
| mode = ""; | |
| >; | |
| uniform int Histogram_ScaleY < | |
| ui_type = "drag"; | |
| ui_min = 1; ui_max = 100; | |
| ui_tooltip = "Y axis scaling of histogram."; | |
| > = 25; | |
| uniform float2 Histogram_Size < | |
| ui_type = "drag"; | |
| ui_min = 0f; ui_step = 0.0001f; ui_max = 1f; | |
| ui_tooltip = "Size of histogram shown."; | |
| > = float2(0.25f, 0.25f); | |
| uniform float2 Histogram_Position < | |
| ui_type = "drag"; | |
| ui_min = 0f; ui_step = 0.0001f; ui_max = 1f; | |
| ui_tooltip = "Left-top position of histogram shown."; | |
| > = float2(0f, 0f); | |
| uniform float Histogram_BackgroundBlend < | |
| ui_type = "drag"; | |
| ui_min = 0; ui_max = 1; | |
| ui_tooltip = "Transparency of histogram background."; | |
| > = 0.5f; | |
| uniform float Histogram_Antialias < | |
| ui_type = "drag"; | |
| ui_min = 1f; ui_step = 0.5f; ui_max = 8f; | |
| ui_tooltip = "Count of pixels to anti-alias the edge of histogram."; | |
| > = 2f; | |
| texture2D Histogram_detectIntTex < | |
| pooled = true; | |
| > { | |
| Width = Histogram_Sample_Resolution; | |
| Height = Histogram_Sample_Resolution; | |
| Format = RGBA32F; | |
| MagFilter = LINEAR; | |
| MinFilter = LINEAR; | |
| MipFilter = LINEAR; | |
| }; | |
| sampler2D Histogram_detectIntColor { Texture = Histogram_detectIntTex; }; | |
| texture2D Histogram_detectLowTex < | |
| pooled = true; | |
| > { | |
| Width = Histogram_Palette_Resolution; | |
| Height = 1; | |
| Format = RGBA32F; | |
| }; | |
| sampler2D Histogram_detectLowColor { Texture = Histogram_detectLowTex; }; | |
| #define GAMMA_BRIGHTNESS(data) (0.299f * data.r + 0.587f * data.g + 0.114f * data.b) | |
| float4 PS_Histogram_DetectInt(float4 vpos: SV_Position, float2 texcoord: TEXCOORD): SV_Target { | |
| return tex2D(ReShade::BackBuffer, texcoord); | |
| } | |
| void PS_Histogram_DetectLow(float4 vpos: SV_Position, float2 texcoord: TEXCOORD, out float4 detectLow: SV_Target) { | |
| int bucket = trunc(texcoord.x * Histogram_Palette_Resolution); | |
| detectLow = float4(0, 0, 0, 1); | |
| float3 level; | |
| int3 detect; | |
| [fastopt][loop] | |
| for(int i = 0; i <= Histogram_Sample_Resolution; i++) { | |
| [fastopt][loop] | |
| for(int j = 0; j <= Histogram_Sample_Resolution; j++) { | |
| level = trunc(tex2D(Histogram_detectIntColor, float2(j, i) / Histogram_Sample_Resolution).rgb * Histogram_Palette_Resolution); | |
| detect.rgb += (bucket == level); | |
| } | |
| } | |
| detectLow.rgb = detect / Histogram_Sample_Resolution / Histogram_Sample_Resolution; | |
| } | |
| float4 PS_Histogram_Display(float4 vpos: SV_Position, float2 texcoord: TEXCOORD): SV_Target { | |
| float2 pwd = (texcoord - Histogram_Position) / Histogram_Size; | |
| if(pwd.x < 0 || pwd.y < 0 || 1 < pwd.x || 1 < pwd.y) | |
| discard; | |
| float4 backbuf = tex2D(ReShade::BackBuffer, texcoord) * Histogram_BackgroundBlend; | |
| float4 r = float4(0, 0, 0, 1); | |
| float4 data; | |
| if(Histogram_Ctrl_Down) { | |
| data = 1 - tex2D(Histogram_detectLowColor, pwd.x) * Histogram_ScaleY; | |
| r = pwd.y - GAMMA_BRIGHTNESS(data); | |
| } else if(Histogram_Mix ^ Histogram_Alt_Down) { | |
| data = 1 - tex2D(Histogram_detectLowColor, pwd.x) * Histogram_ScaleY; | |
| r = pwd.y - data.rgb; | |
| } else { | |
| float localpwd; | |
| int partindex; | |
| if(Histogram_View) { | |
| data = 1 - tex2D(Histogram_detectLowColor, pwd.x) * Histogram_ScaleY; | |
| localpwd = (pwd.y * 4) % 1; | |
| partindex = (pwd.y * 4) / 1; | |
| } else { | |
| data = 1 - tex2D(Histogram_detectLowColor, (pwd.x * 2) % 1) * Histogram_ScaleY; | |
| localpwd = (pwd.y * 2) % 1; | |
| partindex = (pwd.x > 0.5) + 2 * (pwd.y > 0.5); | |
| }; | |
| if(partindex == 0) { | |
| r = GAMMA_BRIGHTNESS(data); | |
| } else { | |
| r = float3( | |
| partindex == 1? data.r : 1, | |
| partindex == 2? data.g : 1, | |
| partindex == 3? data.b : 1 | |
| ); | |
| } | |
| r = localpwd - r; | |
| } | |
| // BUFFER_HEIGHT | |
| // * Histogram_Size.y <- actual size in pixels | |
| // / Histogram_Antialias <- ? | |
| return backbuf + clamp(r * BUFFER_HEIGHT * Histogram_Size.y / Histogram_Antialias, 0, 1); | |
| } | |
| technique Histogram_Source { | |
| pass Histogram_DetectInt { | |
| VertexShader = PostProcessVS; | |
| PixelShader = PS_Histogram_DetectInt; | |
| RenderTarget = Histogram_detectIntTex; | |
| } | |
| pass Histogram_DetectLow { | |
| VertexShader = PostProcessVS; | |
| PixelShader = PS_Histogram_DetectLow; | |
| RenderTarget = Histogram_detectLowTex; | |
| //ClearRenderTargets = true; | |
| } | |
| } | |
| technique Histogram_Display { | |
| pass Histogram_Display { | |
| VertexShader = PostProcessVS; | |
| PixelShader = PS_Histogram_Display; | |
| } | |
| } |
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