vulkan: update example shaders

spa/plugins/vulkan/shaders/filter-color.comp

@@ -0,0 +1,39 @@
+void mainImage( out vec4 fragColor, in vec2 fragCoord )
+{
+    vec2 p = fragCoord.xy/iResolution.xy;
+
+	vec4 col = texture(iChannel0, p);
+
+
+	//Desaturate
+    if(p.x<.25)
+	{
+		col = vec4( (col.r+col.g+col.b)/3. );
+	}
+	//Invert
+	else if (p.x<.5)
+	{
+		col = vec4(1.) - texture(iChannel0, p);
+	}
+	//Chromatic aberration
+	else if (p.x<.75)
+	{
+		vec2 offset = vec2(.01,.0);
+		col.r = texture(iChannel0, p+offset.xy).r;
+		col.g = texture(iChannel0, p          ).g;
+		col.b = texture(iChannel0, p+offset.yx).b;
+	}
+	//Color switching
+	else
+	{
+		col.rgb = texture(iChannel0, p).brg;
+	}
+
+
+	//Line
+	if( mod(abs(p.x+.5/iResolution.y),.25)<0.5/iResolution.y )
+		col = vec4(1.);
+
+
+    fragColor = col;
+}

spa/plugins/vulkan/shaders/filter.comp

@@ -0,0 +1,44 @@
+#version 450
+#extension GL_ARB_separate_shader_objects : enable
+
+#define WORKGROUP_SIZE 32
+layout (local_size_x = WORKGROUP_SIZE, local_size_y = WORKGROUP_SIZE, local_size_z = 1 ) in;
+
+layout(rgba32f, set = 0, binding = 0) uniform image2D resultImage;
+layout(set = 0, binding = 1) uniform sampler2D iChannel0;
+
+layout( push_constant ) uniform Constants {
+  float time;
+  int frame;
+  int width;
+  int height;
+} PushConstant;
+
+float iTime;
+int iFrame;
+vec3 iResolution;
+vec4 iMouse;
+
+void mainImage( out vec4 fragColor, in vec2 fragCoord );
+
+void main()
+{
+	iTime = PushConstant.time;
+	iFrame = PushConstant.frame;
+	iResolution = vec3(float(PushConstant.width), float(PushConstant.height), 0.0);
+	iMouse = vec4(0.0, 0.0, 0.0, 0.0);
+	vec2 coord = vec2(float(gl_GlobalInvocationID.x),
+			iResolution.y - float(gl_GlobalInvocationID.y));
+	vec4 outColor;
+
+	if(coord.x >= iResolution.x || coord.y >= iResolution.y)
+		return;
+
+	mainImage(outColor, coord);
+
+	imageStore(resultImage, ivec2(gl_GlobalInvocationID.xy), outColor);
+}
+
+//#include "smearcam.comp"
+#include "filter-color.comp"
+//#include "filter-ripple.comp"