add actual gb-pass-5 port

handheld/console-border/shader-files/gb-pass-5.slang

@@ -0,0 +1,52 @@
+#version 450
+
+layout(push_constant) uniform Push
+{
+	vec4 OutputSize;
+	vec4 SourceSize;
+	float SCALE;
+	float OUT_X;
+	float OUT_Y;
+} params;
+
+#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
+
+layout(std140, set = 0, binding = 0) uniform UBO
+{
+   mat4 MVP;
+} global;
+
+#pragma stage vertex
+layout(location = 0) in vec4 Position;
+layout(location = 1) in vec2 TexCoord;
+layout(location = 0) out vec2 vTexCoord;
+layout(location = 1) out vec2 tex_border;
+
+void main()
+{
+	gl_Position	=	global.MVP * Position;
+	vec2 scale	=	(params.OutputSize.xy * params.SourceSize.zw) / params.SCALE;
+	vec2 middle	=	0.5;
+	vec2 diff	=	TexCoord.xy - middle;
+	vTexCoord	=	middle + diff * scale;
+
+	middle		=	vec2(0.5, 0.5);
+	vec2 dist	=	TexCoord - middle;
+	tex_border	=	middle + dist * params.OutputSize.xy / vec2(params.OUT_X, params.OUT_Y);
+}
+
+#pragma stage fragment
+layout(location = 0) in vec2 vTexCoord;
+layout(location = 1) in vec2 tex_border;
+layout(location = 0) out vec4 FragColor;
+layout(set = 0, binding = 2) uniform sampler2D Source;
+layout(set = 0, binding = 3) uniform sampler2D BORDER;
+
+void main()
+{
+	vec4 frame	=	texture(Source, vTexCoord).rgba;
+	vec4 border	=	texture(BORDER, tex_border).rgba;
+	FragColor	=	vec4(mix(frame, border, border.a));
+}