From ea369330e3be1a8a3a3b8afdadeeeb733fd846cc Mon Sep 17 00:00:00 2001
From: Rinnegatamante <rinnegatamante@gmail.com>
Date: Thu, 17 Aug 2023 10:27:50 +0200
Subject: [PATCH] Added CRT filter post-processing effect.

---
 Data/DaedalusX64/Shaders/CRT/desc.txt         |  1 +
 Data/DaedalusX64/Shaders/CRT/frag.cg          | 66 +++++++++++++++++++
 Data/DaedalusX64/Shaders/CRT/vert.cg          | 14 ++++
 .../SysVita/Graphics/GraphicsContextVita.cpp  |  4 ++
 Source/SysVita/UI/MenuBarScreen.cpp           |  2 +
 5 files changed, 87 insertions(+)
 create mode 100644 Data/DaedalusX64/Shaders/CRT/desc.txt
 create mode 100644 Data/DaedalusX64/Shaders/CRT/frag.cg
 create mode 100644 Data/DaedalusX64/Shaders/CRT/vert.cg

diff --git a/Data/DaedalusX64/Shaders/CRT/desc.txt b/Data/DaedalusX64/Shaders/CRT/desc.txt
new file mode 100644
index 00000000..d4cac810
--- /dev/null
+++ b/Data/DaedalusX64/Shaders/CRT/desc.txt
@@ -0,0 +1 @@
+Advanced CRT filter.
\ No newline at end of file
diff --git a/Data/DaedalusX64/Shaders/CRT/frag.cg b/Data/DaedalusX64/Shaders/CRT/frag.cg
new file mode 100644
index 00000000..59ee5a08
--- /dev/null
+++ b/Data/DaedalusX64/Shaders/CRT/frag.cg
@@ -0,0 +1,66 @@
+/*
+	Source: https://www.shadertoy.com/view/Ms23DR
+*/
+
+float2 curve(float2 uv)
+{
+	uv = (uv - 0.5) * 2.0;
+	uv *= 1.1;	
+	uv.x *= 1.0 + pow((abs(uv.y) / 5.0), 2.0);
+	uv.y *= 1.0 + pow((abs(uv.x) / 4.0), 2.0);
+	uv  = (uv / 2.0) + 0.5;
+	uv =  uv *0.92 + 0.04;
+	return uv;
+}
+
+varying out float4 fragColor : COLOR;
+varying in float2 fragCoord : WPOS;
+varying in float2 v_uv : TEXCOORD0;
+static float2 iResolution = float2(960.0f, 544.0f);
+uniform float iTime;
+uniform sampler2D s0;
+	
+void main( )
+{
+    float2 q = fragCoord.xy / iResolution.xy;
+    float2 uv = q;
+    uv = curve( uv );
+    // float3 oricol = tex2D( s0, float2(q.x,q.y) ).xyz;
+    float3 col;
+	float x =  sin(0.3*iTime+uv.y*21.0)*sin(0.7*iTime+uv.y*29.0)*sin(0.3+0.33*iTime+uv.y*31.0)*0.0017;
+
+    col.r = tex2D(s0,float2(x+uv.x+0.001,uv.y+0.001)).x+0.05;
+    col.g = tex2D(s0,float2(x+uv.x+0.000,uv.y-0.002)).y+0.05;
+    col.b = tex2D(s0,float2(x+uv.x-0.002,uv.y+0.000)).z+0.05;
+    col.r += 0.08*tex2D(s0,0.75*float2(x+0.025, -0.027)+float2(uv.x+0.001,uv.y+0.001)).x;
+    col.g += 0.05*tex2D(s0,0.75*float2(x+-0.022, -0.02)+float2(uv.x+0.000,uv.y-0.002)).y;
+    col.b += 0.08*tex2D(s0,0.75*float2(x+-0.02, -0.018)+float2(uv.x-0.002,uv.y+0.000)).z;
+
+    col = clamp(col*0.6+0.4*col*col*1.0,0.0,1.0);
+
+    float vig = (0.0 + 1.0*16.0*uv.x*uv.y*(1.0-uv.x)*(1.0-uv.y));
+	col *= float3(pow(vig,0.3));
+
+    col *= float3(0.95,1.05,0.95);
+	col *= 2.8;
+
+	float scans = clamp( 0.35+0.35*sin(3.5*iTime+uv.y*iResolution.y*1.5), 0.0, 1.0);
+	
+	float s = pow(scans,1.7);
+	col = col*float3( 0.4+0.7*s) ;
+
+    col *= 1.0+0.01*sin(110.0*iTime);
+	if (uv.x < 0.0 || uv.x > 1.0)
+		col *= 0.0;
+	if (uv.y < 0.0 || uv.y > 1.0)
+		col *= 0.0;
+	
+	col*=1.0-0.65*float3(clamp((fmod(fragCoord.x, 2.0)-1.0)*2.0,0.0,1.0));
+	
+    // float comp = smoothstep( 0.1, 0.9, sin(iTime) );
+ 
+	// Remove the next line to stop cross-fade between original and postprocess
+//	col = mix( col, oricol, comp );
+
+    fragColor = float4(col,1.0);
+}
diff --git a/Data/DaedalusX64/Shaders/CRT/vert.cg b/Data/DaedalusX64/Shaders/CRT/vert.cg
new file mode 100644
index 00000000..767c0e4b
--- /dev/null
+++ b/Data/DaedalusX64/Shaders/CRT/vert.cg
@@ -0,0 +1,14 @@
+/*
+	Source: https://www.shadertoy.com/view/Ms23DR
+*/
+
+void main(
+	float3 position,
+	float2 texcoord,
+	uniform float4x4 gl_ModelViewProjectionMatrix,
+	out float4 vPosition : POSITION,
+	out float2 vTexcoord : TEXCOORD0
+) {
+	vPosition = mul(gl_ModelViewProjectionMatrix,float4(position, 1.f));
+	vTexcoord = texcoord;
+}
diff --git a/Source/SysVita/Graphics/GraphicsContextVita.cpp b/Source/SysVita/Graphics/GraphicsContextVita.cpp
index 17b80f67..d40d26e7 100644
--- a/Source/SysVita/Graphics/GraphicsContextVita.cpp
+++ b/Source/SysVita/Graphics/GraphicsContextVita.cpp
@@ -36,6 +36,7 @@ uint32_t *gColorBufferPtr;
 float *gTexCoordBufferPtr;
 bool new_frame = true;
 
+extern int time_unif;
 extern float gamma_val;
 
 static GLuint emu_fb = 0xDEADBEEF, emu_fb_tex, emu_depth_buf_tex;
@@ -237,6 +238,9 @@ void IGraphicsContext::UpdateFrame(bool wait_for_vbl)
 			}
 			i++;
 		}
+		if (time_unif != -1) {
+			glUniform1f(time_unif, (float)sceKernelGetProcessTimeLow() / 1000000.0f);
+		}
 			
 		vglVertexAttribPointerMapped(0, vflux_vertices);
 		vglVertexAttribPointerMapped(1, vflux_texcoords);
diff --git a/Source/SysVita/UI/MenuBarScreen.cpp b/Source/SysVita/UI/MenuBarScreen.cpp
index 51c6a5bd..cbff0a9e 100644
--- a/Source/SysVita/UI/MenuBarScreen.cpp
+++ b/Source/SysVita/UI/MenuBarScreen.cpp
@@ -113,6 +113,7 @@ PostProcessingEffect *effects_list = nullptr;
 Overlay *overlays_list = nullptr;
 
 Uniform prog_uniforms[8];
+int time_unif = -1;
 
 GLuint ff_icon = 0xDEADBEEF;
 /*GLuint achievement_icon = 0xDEADBEEF;
@@ -267,6 +268,7 @@ bool setPostProcessingEffect(int idx, PostProcessingEffect *p) {
 		glLinkProgram(program[shader_idx]);
 		cur_prog = program[shader_idx];
 		glUniform1i(glGetUniformLocation(program[shader_idx], "colorMap"), 0);
+		time_unif = glGetUniformLocation(cur_prog, "iTime");
 		
 		if (p->customizable) {
 			sprintf(fpath, "%s%s/unif.txt", DAEDALUS_VITA_PATH_EXT("ux0:", "Shaders/"), p->name);