Add ColorTint, LumaThreshold, HorizontalWave, VerticalWave, FrameBlur filters to orx-fx

orx-fx/src/main/kotlin/blur/FrameBlur.kt

@@ -0,0 +1,41 @@
+package org.openrndr.extra.fx.blur
+
+import org.openrndr.draw.*
+import org.openrndr.extra.fx.filterFragmentCode
+import org.openrndr.extra.parameters.Description
+import org.openrndr.extra.parameters.DoubleParameter
+import org.openrndr.extra.parameters.IntParameter
+
+@Description("Frame blur")
+class FrameBlur : Filter(Shader.createFromCode(Filter.filterVertexCode,
+        filterFragmentCode("blur/frame-blur.frag"))) {
+
+    @DoubleParameter("blend", 0.0, 1.0)
+    var blend: Double by parameters
+
+    private var intermediate: ColorBuffer? = null
+
+    init {
+        blend = 0.5
+    }
+
+    override fun apply(source: Array<ColorBuffer>, target: Array<ColorBuffer>) {
+        if (target.isNotEmpty()) {
+            intermediate?.let {
+                if (it.width != target[0].width || it.height != target[0].height) {
+                    it.destroy()
+                    intermediate = null
+                }
+
+            }
+
+            if (intermediate == null) {
+                intermediate = colorBuffer(target[0].width, target[0].height, type = ColorType.FLOAT16)
+            }
+
+            super.apply(arrayOf(source[0], intermediate!!), arrayOf(intermediate!!))
+            intermediate!!.copyTo(target[0])
+        }
+    }
+
+}

orx-fx/src/main/kotlin/color/ColorMix.kt

@@ -1,7 +1,21 @@
 package org.openrndr.extra.fx.color
 
+import org.openrndr.color.ColorRGBa
 import org.openrndr.draw.Filter
 import org.openrndr.draw.Shader
 import org.openrndr.extra.fx.filterFragmentCode
+import org.openrndr.extra.parameters.ColorParameter
+import org.openrndr.extra.parameters.Description
 
 class ColorMix : Filter(Shader.createFromCode(Filter.filterVertexCode, filterFragmentCode("color/color-mix.frag")))
+
+@Description("Tint")
+class ColorTint : Filter(Shader.createFromCode(Filter.filterVertexCode, filterFragmentCode("color/color-tint.frag"))) {
+    @ColorParameter("tint")
+    var tint: ColorRGBa by parameters
+
+    init {
+        tint = ColorRGBa.PINK
+    }
+
+}

orx-fx/src/main/kotlin/color/LumaThreshold.kt

@@ -0,0 +1,38 @@
+package org.openrndr.extra.fx.color
+
+import org.openrndr.color.ColorRGBa
+import org.openrndr.draw.Filter
+import org.openrndr.draw.Shader
+import org.openrndr.extra.fx.filterFragmentCode
+import org.openrndr.extra.parameters.BooleanParameter
+import org.openrndr.extra.parameters.ColorParameter
+import org.openrndr.extra.parameters.Description
+import org.openrndr.extra.parameters.DoubleParameter
+
+@Description("Luma threshold ")
+class Threshold : Filter(Shader.createFromCode(Filter.filterVertexCode, filterFragmentCode("color/luma-threshold.frag"))) {
+
+    @DoubleParameter("threshold value", 0.0, 1.0)
+    var threshold: Double by parameters
+
+    @ColorParameter("foreground color")
+    var foreground: ColorRGBa by parameters
+
+    @ColorParameter("background color")
+    var background: ColorRGBa by parameters
+
+    @DoubleParameter("background opacity", 0.0, 1.0)
+    var backgroundOpacity: Double by parameters
+
+    @DoubleParameter("foreground opacity", 0.0, 1.0)
+    var foregroundOpacity: Double by parameters
+
+    init {
+        threshold = 0.5
+        foreground = ColorRGBa.WHITE
+        background = ColorRGBa.BLACK
+        foregroundOpacity = 1.0
+        backgroundOpacity = 1.0
+    }
+
+}

orx-fx/src/main/kotlin/distort/Wave.kt

@@ -0,0 +1,44 @@
+package org.openrndr.extra.fx.distort
+
+import org.openrndr.draw.Filter
+import org.openrndr.draw.Shader
+import org.openrndr.extra.fx.filterFragmentCode
+import org.openrndr.extra.parameters.Description
+import org.openrndr.extra.parameters.DoubleParameter
+
+@Description("Horizontal wave")
+class HorizontalWave : Filter(Shader.createFromCode(filterVertexCode, filterFragmentCode("distort/horizontal-wave.frag"))) {
+    @DoubleParameter("frequency", 0.0, 64.0)
+    var frequency: Double by parameters
+
+    @DoubleParameter("amplitude", 0.0, 1.0)
+    var amplitude: Double by parameters
+
+    @DoubleParameter("phase", -0.5, 0.5)
+    var phase: Double by parameters
+
+    init {
+        frequency = 1.0
+        amplitude = 0.1
+        phase = 0.0
+    }
+}
+
+@Description("Vertical wave")
+class VerticalWave : Filter(Shader.createFromCode(filterVertexCode, filterFragmentCode("distort/vertical-wave.frag"))) {
+    @DoubleParameter("frequency", 0.0, 64.0)
+    var frequency: Double by parameters
+
+    @DoubleParameter("amplitude", 0.0, 1.0)
+    var amplitude: Double by parameters
+
+    @DoubleParameter("phase", -0.5, 0.5)
+    var phase: Double by parameters
+
+    init {
+        frequency = 1.0
+        amplitude = 0.1
+        phase = 0.0
+    }
+
+}

orx-fx/src/main/resources/org/openrndr/extra/fx/gl3/blur/frame-blur.frag

@@ -0,0 +1,15 @@
+// openrndr - gl3 - frame-blur
+
+#version 330 core
+
+in vec2 v_texCoord0;
+uniform sampler2D tex0; // input image
+uniform sampler2D tex1; // accumulator image
+uniform float blend;
+out vec4 o_color;
+void main() {
+
+    vec4 inputColor = texture(tex0, v_texCoord0);
+    vec4 accumulator = texture(tex1, v_texCoord0);
+    o_color = accumulator * (1.0 - blend) + inputColor * blend;
+}

orx-fx/src/main/resources/org/openrndr/extra/fx/gl3/color/color-tint.frag

@@ -0,0 +1,11 @@
+#version 330
+
+uniform vec4 tint;
+in vec2 v_texCoord0;
+uniform sampler2D tex0;
+
+out vec4 o_color;
+void main() {
+    vec4 c = texture(tex0, v_texCoord0);
+    o_color = vec4(c.rgb * tint.rgb, c.a) * tint.a;
+}

orx-fx/src/main/resources/org/openrndr/extra/fx/gl3/color/luma-threshold.frag

@@ -0,0 +1,18 @@
+#version 330 core
+
+in vec2 v_texCoord0;
+uniform sampler2D tex0; // input
+uniform vec4 foreground;
+uniform vec4 background;
+uniform float foregroundOpacity;
+uniform float backgroundOpacity;
+uniform float threshold;
+
+out vec4 o_color;
+void main() {
+    vec4 c = texture(tex0, v_texCoord0);
+    vec4 fgc = foreground * foregroundOpacity;
+    vec4 bgc = background * backgroundOpacity;
+    float luma = dot(c.rgb, vec3(1.0/3.0));
+    o_color = mix(bgc, fgc, step(threshold, luma ));
+}

orx-fx/src/main/resources/org/openrndr/extra/fx/gl3/distort/horizontal-wave.frag

@@ -0,0 +1,18 @@
+#version 330 core
+
+in vec2 v_texCoord0;
+uniform sampler2D tex0; // input
+uniform float phase;
+uniform float amplitude;
+uniform float frequency;
+
+out vec4 o_color;
+void main() {
+    vec2 uv = v_texCoord0;
+    uv.x += amplitude * cos(uv.y * 3.1415926535 * frequency + phase * 3.1415926535);
+    if (uv.x >= 0.0 && uv.x < 1.0) {
+        o_color = texture(tex0, uv);
+    } else {
+        o_color = vec4(0.0);
+    }
+}

orx-fx/src/main/resources/org/openrndr/extra/fx/gl3/distort/vertical-wave.frag

@@ -0,0 +1,18 @@
+#version 330 core
+
+in vec2 v_texCoord0;
+uniform sampler2D tex0; // input
+uniform float phase;
+uniform float amplitude;
+uniform float frequency;
+
+out vec4 o_color;
+void main() {
+    vec2 uv = v_texCoord0;
+    uv.y += amplitude * sin(uv.x * 3.1415926535 * frequency + phase * 3.1415926535);
+    if (uv.y >= 0.0 && uv.y < 1.0) {
+        o_color = texture(tex0, uv);
+    } else {
+        o_color = vec4(0.0);
+    }
+}