add ambient-glow border and apply dotmask in linear gamma

border/ambient-glow.slangp

@@ -0,0 +1,11 @@
+shaders = 2
+
+shader0 = ../motionblur/shaders/feedback.slang
+filter_linear0 = true
+
+shader1 = shaders/ambient-glow.slang
+filter_linear1 = true
+mipmap_input1 = true
+
+parameters = "mixfactor;aspect_x;integer_scale;OS_MASK_TOP;OS_MASK_BOTTOM"
+mixfactor = 0.95

border/shaders/ambient-glow.slang

@@ -0,0 +1,117 @@
+#version 450
+
+layout(push_constant) uniform Push
+{
+	vec4 OutputSize;
+	vec4 OriginalSize;
+	vec4 SourceSize;
+	uint FrameCount;
+	float integer_scale;
+	float overscale;
+	float effect;
+	float scanline_toggle;
+	float SCANLINE_BASE_BRIGHTNESS;
+	float SCANLINE_SINE_COMP_A;
+	float SCANLINE_SINE_COMP_B;
+	float interp_toggle;
+	float OS_MASK_TOP;
+	float OS_MASK_BOTTOM;
+	float OS_MASK_LEFT;
+	float OS_MASK_RIGHT;
+	float aspect_x;
+	float aspect_y;
+} params;
+
+layout(std140, set = 0, binding = 0) uniform UBO
+{
+   mat4 MVP;
+} global;
+
+#pragma parameter effect "Glow Brightness" 1.0 0.1 3.0 0.1
+#pragma parameter aspect_x "Aspect Ratio Numerator" 64.0 1.0 256. 1.0
+#pragma parameter aspect_y "Aspect Ratio Denominator" 49.0 1.0 256. 1.0
+#pragma parameter integer_scale "Force Integer Scaling" 1.0 0.0 1.0 1.0
+#pragma parameter overscale "Integer Overscale" 0.0 0.0 1.0 1.0
+#pragma parameter interp_toggle "Sharpen Linear Scaling" 0.0 0.0 1.0 1.0
+#pragma parameter scanline_toggle "Scanline Toggle" 0.0 0.0 1.0 1.0
+#pragma parameter SCANLINE_BASE_BRIGHTNESS "Scanline Base Brightness" 0.95 0.0 1.0 0.01
+#pragma parameter SCANLINE_SINE_COMP_A "Scanline Sine Comp A" 0.00 0.0 0.10 0.01
+#pragma parameter SCANLINE_SINE_COMP_B "Scanline Intensity" 0.15 0.0 1.0 0.05
+#pragma parameter OS_MASK_TOP "Overscan Mask Top" 0.0 0.0 1.0 0.005
+#pragma parameter OS_MASK_BOTTOM "Overscan Mask Bottom" 0.0 0.0 1.0 0.005
+#pragma parameter OS_MASK_LEFT "Overscan Mask Left" 0.0 0.0 1.0 0.005
+#pragma parameter OS_MASK_RIGHT "Overscan Mask Right" 0.0 0.0 1.0 0.005
+
+#pragma stage vertex
+layout(location = 0) in vec4 Position;
+layout(location = 1) in vec2 TexCoord;
+layout(location = 0) out vec2 border_coord;
+layout(location = 1) out vec2 screen_coord;
+
+void main()
+{
+	gl_Position = global.MVP * Position;
+	vec2 out_res = params.OutputSize.xy;
+	vec2 corrected_size = params.SourceSize.xy * vec2(params.aspect_x / params.aspect_y, 1.0)
+		 * vec2(params.SourceSize.y / params.SourceSize.x, 1.0);
+	float full_scale = (params.integer_scale > 0.5) ? floor(params.OutputSize.y /
+		params.SourceSize.y) + params.overscale : params.OutputSize.y / params.SourceSize.y;
+	vec2 scale = (params.OutputSize.xy / corrected_size) / full_scale;
+	vec2 middle = vec2(0.49999, 0.49999);
+	vec2 diff = TexCoord.xy - middle;
+	screen_coord = middle + diff * scale;
+	border_coord = TexCoord.xy;
+}
+
+#pragma stage fragment
+layout(location = 0) in vec2 border_coord;
+layout(location = 1) in vec2 screen_coord;
+layout(location = 0) out vec4 FragColor;
+layout(set = 0, binding = 2) uniform sampler2D Source;
+layout(set = 0, binding = 3) uniform sampler2D Original;
+
+vec4 scanline(vec2 coord, vec4 frame)
+{
+	vec2 omega = vec2(3.1415 * params.OutputSize.x, 2.0 * 3.1415 * params.SourceSize.y);
+	vec2 sine_comp = vec2(params.SCANLINE_SINE_COMP_A, params.SCANLINE_SINE_COMP_B);
+	vec3 res = frame.xyz;
+	vec3 scanline = res * (params.SCANLINE_BASE_BRIGHTNESS + dot(sine_comp * sin(coord * omega), vec2(1.0, 1.0)));
+	return vec4(scanline.x, scanline.y, scanline.z, 1.0);
+}
+
+vec2 interp_coord(vec2 coord, vec2 texture_size)
+{
+	vec2 p = coord.xy;
+	p = p * texture_size.xy + vec2(0.5, 0.5);
+	vec2 i = floor(p);
+	vec2 f = p - i;
+	// Smoothstep - amazingly, smoothstep() is slower than calculating directly the expression!
+	f = f * f * f * f * (f * (f * (-20.0 * f + vec2(70.0, 70.0)) - vec2(84.0, 84.0)) + vec2(35.0, 35.0));
+	p = i + f;
+	p = (p - vec2(0.5, 0.5)) * 1.0 / texture_size;
+	return p;
+}
+
+vec4 border(vec2 screen_coord, vec2 border_coord, vec2 texture_size, vec2 video_size,
+	vec2 output_size, float frame_count, sampler2D decal)
+{
+	vec4 background;
+	vec4 color = texture(Source, border_coord, 10.0) * 1.25 + 0.125; // use mipmapping to get an average of the entire screen
+	background = color * color * params.effect;
+	
+	vec2 coord = (params.interp_toggle < 0.5) ? screen_coord : interp_coord(screen_coord, texture_size);
+	vec4 frame = texture(decal, coord);
+	frame = (params.scanline_toggle > 0.5) ? scanline(coord, frame) : frame;
+	vec2 fragcoord = (coord.xy);
+	if (fragcoord.x < 1.0 - params.OS_MASK_RIGHT && fragcoord.x > 0.0 + params.OS_MASK_LEFT &&
+		fragcoord.y < 1.0 - params.OS_MASK_BOTTOM && fragcoord.y > 0.0 + params.OS_MASK_TOP)
+			return frame;
+	
+	else return background;
+}
+
+void main()
+{
+	FragColor = border(screen_coord, border_coord, params.SourceSize.xy, params.SourceSize.xy, 
+		params.OutputSize.xy, float(params.FrameCount), Original);
+}

crt/shaders/dotmask.slang

@@ -95,7 +95,7 @@ vec3 Mask(vec2 pos){
 
 void main()
 {
-vec3 res = texture(Source, vTexCoord).rgb;
+vec3 res = pow(texture(Source, vTexCoord).rgb, vec3(2.2));
 
 float mask = 1.0 - global.DOTMASK_STRENGTH;
 
@@ -110,5 +110,5 @@ if (global.shadowMask == 0) {
 else {
 	res *= Mask(floor(1.000001 * vTexCoord.xy * global.OutputSize.xy + vec2(0.5)));
 	}
-   FragColor = vec4(res, 1.0);
+   FragColor = vec4(pow(res, vec3(1.0/2.2)), 1.0);
 }