add advanced-aa shader

test/nonfunctional/anti-aliasing/advanced-aa.slangp

@@ -0,0 +1,6 @@
+shaders = 1
+
+shader0 = shaders/advanced-aa.slang
+filter_linear0 = false
+scale_type0 = viewport
+scale0 = 1.0

test/nonfunctional/anti-aliasing/shaders/advanced-aa.slang

@@ -0,0 +1,113 @@
+#version 450
+
+layout(push_constant) uniform Push
+{
+	vec4 SourceSize;
+	vec4 OriginalSize;
+	vec4 OutputSize;
+	uint FrameCount;
+	float AA_RESOLUTION_X;
+	float AA_RESOLUTION_Y;
+} params;
+
+#pragma parameter AA_RESOLUTION_X "AA Input Res X" 0.0 0.0 1920.0 1.0
+#pragma parameter AA_RESOLUTION_Y "AA Input Res Y" 0.0 0.0 1920.0 1.0
+
+layout(std140, set = 0, binding = 0) uniform UBO
+{
+	mat4 MVP;
+} global;
+
+/*
+   Copyright (C) 2006 guest(r) - guest.r@gmail.com
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License
+   as published by the Free Software Foundation; either version 2
+   of the License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+*/
+
+/*
+   The AdvancedAA shader is well used to:
+   - AA 2xscaled gfx. to its 4x absolute size,   
+   - AA hi-res "screens" (640x480) to their 2x size or,
+   - AA gfx. back to it's original size (looks nice above 640x480, set scaling to 1.0) 
+*/
+
+#define AA_RESOLUTION_X_DEF params.SourceSize.x
+#define AA_RESOLUTION_Y_DEF params.SourceSize.y
+vec3  dt = vec3(1,1,1);
+
+#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 vec4 t1;
+layout(location = 2) out vec4 t2;
+layout(location = 3) out vec4 t3;
+layout(location = 4) out vec4 t4;
+
+void main()
+{
+	gl_Position = global.MVP * Position;
+	vTexCoord = TexCoord;
+   	vec2 ps = vec2(1.0/((params.AA_RESOLUTION_X == 0) ? AA_RESOLUTION_X_DEF : params.AA_RESOLUTION_X), 1.0/((params.AA_RESOLUTION_Y == 0) ? AA_RESOLUTION_Y_DEF : params.AA_RESOLUTION_Y));
+	float dx = ps.x*0.5;
+	float dy = ps.y*0.5;
+	
+	t1.xy = vTexCoord + vec2(-dx, 0);
+	t2.xy = vTexCoord + vec2( dx, 0);
+	t3.xy = vTexCoord + vec2( 0,-dy);
+	t4.xy = vTexCoord + vec2( 0, dy);
+	t1.zw = vTexCoord + vec2(-dx,-dy);
+	t2.zw = vTexCoord + vec2(-dx, dy);
+	t3.zw = vTexCoord + vec2( dx,-dy);
+	t4.zw = vTexCoord + vec2( dx, dy);
+}
+
+#pragma stage fragment
+layout(location = 0) in vec2 vTexCoord;
+layout(location = 1) in vec4 t1;
+layout(location = 2) in vec4 t2;
+layout(location = 3) in vec4 t3;
+layout(location = 4) in vec4 t4;
+layout(location = 0) out vec4 FragColor;
+layout(set = 0, binding = 2) uniform sampler2D Source;
+
+void main()
+{
+   vec3 c00 = texture(Source, t1.zw).xyz; 
+   vec3 c10 = texture(Source, t3.xy).xyz;
+   vec3 c20 = texture(Source, t3.zw).xyz;
+   vec3 c01 = texture(Source, t1.xy).xyz;
+   vec3 c11 = texture(Source, vTexCoord).xyz;
+   vec3 c21 = texture(Source, t2.xy).xyz;
+   vec3 c02 = texture(Source, t2.zw).xyz;
+   vec3 c12 = texture(Source, t4.xy).xyz;
+   vec3 c22 = texture(Source, t4.zw).xyz;
+
+   float d1=dot(abs(c00-c22),dt)+0.0001;
+   float d2=dot(abs(c20-c02),dt)+0.0001;
+   float hl=dot(abs(c01-c21),dt)+0.0001;
+   float vl=dot(abs(c10-c12),dt)+0.0001;
+   
+   float k1=0.5*(hl+vl);
+   float k2=0.5*(d1+d2);
+
+   vec3 t1=(hl*(c10+c12)+vl*(c01+c21)+k1*c11)/(2.5*(hl+vl));
+   vec3 t2=(d1*(c20+c02)+d2*(c00+c22)+k2*c11)/(2.5*(d1+d2));
+
+   k1=dot(abs(t1-c11),dt)+0.0001;
+   k2=dot(abs(t2-c11),dt)+0.0001;
+   
+   FragColor = vec4((k1*t2+k2*t1)/(k1+k2),1);
+}