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Vidvox · Oct 23, 2018 · 55fa058 · 55fa058
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diff --git a/ISF/3d Rotate.fs b/ISF/3d Rotate.fs
@@ -0,0 +1,52 @@
+/*{
+	"DESCRIPTION": "performs a 3d rotation",
+	"CREDIT": "by zoidberg",
+	"ISFVSN": "2",
+	"CATEGORIES": [
+		"Geometry Adjustment"
+	],
+	"INPUTS": [
+		{
+			"NAME": "inputImage",
+			"TYPE": "image"
+		},
+		{
+			"NAME": "xrot",
+			"LABEL": "X rotate",
+			"TYPE": "float",
+			"MIN": 0.0,
+			"MAX": 2.0,
+			"DEFAULT": 1.0
+		},
+		{
+			"NAME": "yrot",
+			"LABEL": "Y rotate",
+			"TYPE": "float",
+			"MIN": 0.0,
+			"MAX": 2.0,
+			"DEFAULT": 1.0
+		},
+		{
+			"NAME": "zrot",
+			"LABEL": "Z rotate",
+			"TYPE": "float",
+			"MIN": 0.0,
+			"MAX": 2.0,
+			"DEFAULT": 1.0
+		},
+		{
+			"NAME": "zoom",
+			"LABEL": "Zoom Level",
+			"TYPE": "float",
+			"MIN": 0.0,
+			"MAX": 1.0,
+			"DEFAULT": 1.0
+		}
+	]
+}*/
+
+
+void main()
+{
+	gl_FragColor = IMG_THIS_PIXEL(inputImage);
+}
diff --git a/ISF/3d Rotate.vs b/ISF/3d Rotate.vs
@@ -0,0 +1,86 @@
+float		PI_CONST = 3.14159265359;
+
+
+//	with help from http://duriansoftware.com/joe/An-intro-to-modern-OpenGL.-Chapter-3:-3D-transformation-and-projection.html
+//	and http://en.wikipedia.org/wiki/Rotation_matrix
+
+
+mat4 view_frustum(
+    float angle_of_view,
+    float aspect_ratio,
+    float z_near,
+    float z_far
+) {
+    return mat4(
+        vec4(1.0/tan(angle_of_view),           0.0, 0.0, 0.0),
+        vec4(0.0, aspect_ratio/tan(angle_of_view),  0.0, 0.0),
+        vec4(0.0, 0.0,    (z_far+z_near)/(z_far-z_near), 1.0),
+        vec4(0.0, 0.0, -2.0*z_far*z_near/(z_far-z_near), 0.0)
+    );
+}
+
+mat4 scale(float x, float y, float z)
+{
+    return mat4(
+        vec4(x,   0.0, 0.0, 0.0),
+        vec4(0.0, y,   0.0, 0.0),
+        vec4(0.0, 0.0, z,   0.0),
+        vec4(0.0, 0.0, 0.0, 1.0)
+    );
+}
+
+mat4 translate(float x, float y, float z)
+{
+    return mat4(
+        vec4(1.0, 0.0, 0.0, 0.0),
+        vec4(0.0, 1.0, 0.0, 0.0),
+        vec4(0.0, 0.0, 1.0, 0.0),
+        vec4(x,   y,   z,   1.0)
+    );
+}
+
+mat4 rotate_x(float theta)
+{
+    return mat4(
+        vec4(1.0, 0.0, 0.0, 0.0),
+        vec4(0.0, cos(theta*PI_CONST), sin(theta*PI_CONST), 0.0),
+        vec4(0.0, -sin(theta*PI_CONST), cos(theta*PI_CONST), 0.0),
+        vec4(0.0, 0.0, 0.0, 1.0)
+    );
+}
+
+mat4 rotate_y(float theta)
+{
+    return mat4(
+        vec4(cos(theta*PI_CONST), 0.0, sin(theta*PI_CONST), 0.0),
+        vec4(0.0, 1.0, 0.0, 0.0),
+        vec4(-sin(theta*PI_CONST), 0, cos(theta*PI_CONST), 0.0),
+        vec4(0.0, 0.0, 0.0, 1.0)
+    );
+}
+
+mat4 rotate_z(float theta)
+{
+    return mat4(
+        vec4(cos(theta*PI_CONST), -sin(theta*PI_CONST), 0.0, 0.0),
+        vec4(sin(theta*PI_CONST), cos(theta*PI_CONST), 0.0, 0.0),
+        vec4(0.0, 0.0, 1.0, 0.0),
+        vec4(0.0, 0.0, 0.0, 1.0)
+    );
+}
+
+void main()
+{
+	isf_vertShaderInit();
+
+	vec4 position = gl_Position;
+
+    gl_Position = view_frustum(radians(45.0), RENDERSIZE.x/RENDERSIZE.y, 0.0, 2.0)
+        * translate(0.0, 0.0, RENDERSIZE.x/RENDERSIZE.y)
+        * rotate_x(-xrot)
+        * rotate_y(yrot)
+        * rotate_z(-zrot)
+        * scale(zoom*RENDERSIZE.x/RENDERSIZE.y, zoom, zoom)
+        * position;
+
+}
diff --git a/ISF/ASCII Art.fs b/ISF/ASCII Art.fs
@@ -0,0 +1,95 @@
+/*{
+	"DESCRIPTION": "ASCII Art",
+	"CREDIT": "by VIDVOX (Ported from https://www.shadertoy.com/view/lssGDj)",
+	"ISFVSN": "2",
+	"CATEGORIES": [
+		"Stylize", "Retro"
+	],
+	"INPUTS": [
+		{
+			"NAME": "inputImage",
+			"TYPE": "image"
+		},
+		{
+			"NAME": "size",
+			"TYPE": "float",
+			"MIN": 0.0,
+			"MAX": 1.0,
+			"DEFAULT": 0.1
+		},
+		{
+			"NAME": "gamma",
+			"TYPE": "float",
+			"DEFAULT": 1.0,
+			"MIN": 0.5,
+			"MAX": 2.0
+		},
+		{
+			"NAME": "tint",
+			"TYPE": "float",
+			"MIN": 0.0,
+			"MAX": 1.0,
+			"DEFAULT": 1.0
+		},
+		{
+			"NAME": "tintColor",
+			"TYPE": "color",
+			"DEFAULT": [
+				0.0,
+				1.0,
+				0.0,
+				1.0
+			]
+		},
+		{
+			"NAME": "alphaMode",
+			"TYPE": "bool",
+			"DEFAULT": 0.0
+		}
+	]
+	
+}*/
+
+
+
+float character(float n, vec2 p) // some compilers have the word "char" reserved
+{
+	p = floor(p*vec2(4.0, -4.0) + 2.5);
+	if (clamp(p.x, 0.0, 4.0) == p.x && clamp(p.y, 0.0, 4.0) == p.y)
+	{
+		if (int(mod(n/exp2(p.x + 5.0*p.y), 2.0)) == 1) return 1.0;
+	}	
+	return 0.0;
+}
+
+
+
+void main()	{
+	float _size = size*36.0+8.0;
+	vec2 uv = gl_FragCoord.xy;
+	vec4 inputColor = IMG_NORM_PIXEL(inputImage, (floor(uv/_size)*_size/RENDERSIZE.xy));
+	vec3 col = inputColor.rgb;
+	float gray = (col.r + col.g + col.b)/3.0;
+	gray = pow(gray, gamma);
+	col = mix(tintColor.rgb, col.rgb, 1.0-tint);
+
+	float n =  65536.0;             // .
+	if (gray > 0.2) n = 65600.0;    // :
+	if (gray > 0.3) n = 332772.0;   // *
+	if (gray > 0.4) n = 15255086.0; // o 
+	if (gray > 0.5) n = 23385164.0; // &
+	if (gray > 0.6) n = 15252014.0; // 8
+	if (gray > 0.7) n = 13199452.0; // @
+	if (gray > 0.8) n = 11512810.0; // #
+
+	vec2 p = mod(uv/(_size/2.0), 2.0) - vec2(1.0);
+	col = col*character(n, p);
+	float alpha = mix(tintColor.a * inputColor.a, inputColor.a, 1.0-tint);
+	if (alphaMode)	{
+		alpha = (col.r + col.g + col.b)/3.0;
+		alpha = (alpha > 0.01) ? tintColor.a : alpha;
+	}
+
+	gl_FragColor = vec4(col,alpha);
+
+}
diff --git a/ISF/Apply Alpha.fs b/ISF/Apply Alpha.fs
@@ -0,0 +1,20 @@
+/*{
+	"CREDIT": "by VIDVOX",
+	"ISFVSN": "2",
+	"CATEGORIES": [
+		"Color Adjustment"
+	],
+	"INPUTS": [
+		{
+			"NAME": "inputImage",
+			"TYPE": "image"
+		}
+	]
+}*/
+
+void main() {
+	vec4		srcPixel = IMG_THIS_PIXEL(inputImage);
+	srcPixel.rgb = srcPixel.rgb * srcPixel.a;
+	srcPixel.a = 1.0;
+	gl_FragColor = srcPixel;
+}