Adds retro-v2-softlight shader

Author: rbreaves

.gitignore

@@ -0,0 +1 @@
+.DS_Store

reshade/retro-v2-softlight.glslp

@@ -0,0 +1,21 @@
+shaders = 2
+shader0 = ../handheld/shaders/retro-v2.glsl
+shader1 = shaders/blendsoftlight/blendsoftlight.glsl
+
+
+
+textures = "overlay"
+# change this path to point to your overlay image
+overlay = shaders/blendsoftlight/shine.png
+OverlayMix = 1.0
+
+scale_type0 = source
+scale0 = 4
+
+filter_linear0 = false
+filter_linear1 = true
+
+parameters = "RETRO_PIXEL_SIZE"
+# set these to the width/height of your overlay image
+SCALE = "1.0"
+RETRO_PIXEL_SIZE = "0.70"

reshade/shaders/blendsoftlight/blendsoftlight.glsl

@@ -0,0 +1,134 @@
+// version directive if necessary
+
+// blendSoftlight
+// based on:
+// https://github.com/jamieowen/glsl-blend for blendSoftlight
+
+#pragma parameter OverlayMix "Overlay Mix" 1.0 0.0 1.0 0.05
+#pragma parameter SCALE "Box Scale" 0.6667 0.6667 1.5 0.33333
+#pragma parameter OUT_X "Out X" 1600.0 1600.0 4800.0 8000.0
+#pragma parameter OUT_Y "Out Y" 800.0 800.0 2400.0 400.0
+
+#if defined(VERTEX)
+
+#if __VERSION__ >= 130
+#define COMPAT_VARYING out
+#define COMPAT_ATTRIBUTE in
+#define COMPAT_TEXTURE texture
+#else
+#define COMPAT_VARYING varying 
+#define COMPAT_ATTRIBUTE attribute 
+#define COMPAT_TEXTURE texture2D
+#endif
+
+#ifdef GL_ES
+#define COMPAT_PRECISION mediump
+#else
+#define COMPAT_PRECISION
+#endif
+
+COMPAT_ATTRIBUTE vec4 VertexCoord;
+COMPAT_ATTRIBUTE vec4 COLOR;
+COMPAT_ATTRIBUTE vec4 TexCoord;
+COMPAT_VARYING vec4 COL0;
+COMPAT_VARYING vec4 TEX0;
+
+vec4 _oPosition1; 
+uniform mat4 MVPMatrix;
+uniform COMPAT_PRECISION int FrameDirection;
+uniform COMPAT_PRECISION int FrameCount;
+uniform COMPAT_PRECISION vec2 OutputSize;
+uniform COMPAT_PRECISION vec2 TextureSize;
+uniform COMPAT_PRECISION vec2 InputSize;
+
+// compatibility #defines
+#define vTexCoord TEX0.xy
+#define SourceSize vec4(TextureSize, 1.0 / TextureSize) //either TextureSize or InputSize
+#define OutSize vec4(OutputSize, 1.0 / OutputSize)
+
+#ifdef PARAMETER_UNIFORM
+// All parameter floats need to have COMPAT_PRECISION in front of them
+uniform COMPAT_PRECISION float SCALE;
+uniform COMPAT_PRECISION float OUT_X;
+uniform COMPAT_PRECISION float OUT_Y;
+#else
+#define SCALE 0.66667
+#define OUT_X 1600.0
+#define OUT_Y 800.0
+#endif
+
+void main()
+{
+    gl_Position =   MVPMatrix * VertexCoord;
+    vec2 scale  =   (OutputSize.xy / InputSize.xy) / SCALE;
+    vec2 middle =   vec2(0.5, 0.5) * InputSize.xy / TextureSize.xy;
+    vec2 diff   =   TexCoord.xy - middle;
+    TEX0.xy     =   middle + diff * scale;
+}
+
+#elif defined(FRAGMENT)
+
+#ifdef GL_ES
+#ifdef GL_FRAGMENT_PRECISION_HIGH
+precision highp float;
+#else
+precision mediump float;
+#endif
+#define COMPAT_PRECISION mediump
+#else
+#define COMPAT_PRECISION
+#endif
+
+#if __VERSION__ >= 130
+#define COMPAT_VARYING in
+#define COMPAT_TEXTURE texture
+out COMPAT_PRECISION vec4 FragColor;
+#else
+#define COMPAT_VARYING varying
+#define FragColor gl_FragColor
+#define COMPAT_TEXTURE texture2D
+#endif
+
+uniform COMPAT_PRECISION int FrameDirection;
+uniform COMPAT_PRECISION int FrameCount;
+uniform COMPAT_PRECISION vec2 OutputSize;
+uniform COMPAT_PRECISION vec2 TextureSize;
+uniform COMPAT_PRECISION vec2 InputSize;
+uniform sampler2D Texture;
+uniform sampler2D overlay;
+COMPAT_VARYING vec4 TEX0;
+
+// compatibility #defines
+#define Source Texture
+#define vTexCoord TEX0.xy
+
+#define SourceSize vec4(TextureSize, 1.0 / TextureSize) //either TextureSize or InputSize
+#define OutSize vec4(OutputSize, 1.0 / OutputSize)
+
+#ifdef PARAMETER_UNIFORM
+uniform COMPAT_PRECISION float OverlayMix;
+#else
+#define OverlayMix 1.0
+#endif
+
+float blendSoftlight(float base, float blend) {
+    return (blend<0.5)?(2.0*base*blend+base*base*(1.0-2.0*blend)):(sqrt(base)*(2.0*blend-1.0)+2.0*base*(1.0-blend));
+}
+
+void main()
+{
+
+    vec4 frame  =   COMPAT_TEXTURE(Source, vTexCoord).rgba;
+    vec4 softlight =   COMPAT_TEXTURE(overlay, vTexCoord).rgba;
+
+    vec4 ImageFinal  = frame;
+
+    ImageFinal.r = blendSoftlight(frame.r,softlight.r);
+    ImageFinal.g = blendSoftlight(frame.g,softlight.g);
+    ImageFinal.b = blendSoftlight(frame.b,softlight.b);
+    ImageFinal.a = blendSoftlight(frame.a,softlight.a);
+    ImageFinal   = mix(frame,clamp(ImageFinal,0.0,OverlayMix),softlight.a);
+    
+    FragColor = vec4(ImageFinal);
+} 
+#endif