diff --git a/src/system/src/path.cpp b/src/system/src/path.cpp
index 2e186c1..2d50105 100644
--- a/src/system/src/path.cpp
+++ b/src/system/src/path.cpp
@@ -56,18 +56,15 @@ std::string path::separator()
 std::string path::executable_path()
 {
 	std::string result;
-
+	const size_t MAXPATHLEN = 2048;
+	std::vector<char> buf(MAXPATHLEN);
 
 #if defined(__APPLE__)
-	CFURLRef bundleURL;
-	CFStringRef pathStr;
+
 	CFBundleRef mainBundle = CFBundleGetMainBundle();
-
-	bundleURL = CFBundleCopyExecutableURL(mainBundle);
-	pathStr = CFURLCopyFileSystemPath(bundleURL, kCFURLPOSIXPathStyle);
-	CFStringGetCString(pathStr, path, MAXPATHLEN, kCFStringEncodingASCII);
-
-	result.assign(&path[0]);
+	CFURLRef bundleURL = CFBundleCopyExecutableURL(mainBundle);
+	CFStringRef pathStr = CFURLCopyFileSystemPath(bundleURL, kCFURLPOSIXPathStyle);
+	CFStringGetCString(pathStr, buf.data(), buf.size(), kCFStringEncodingASCII);
 
 	CFRelease(pathStr);
 	CFRelease(bundleURL);
@@ -77,11 +74,10 @@ std::string path::executable_path()
 	DWORD ret = GetModuleFileName( NULL, &lpFname[0], MAXPATHLEN );
 	result.assign(&lpFname[0]);
 #elif defined(__USE_POSIX)
-    const size_t MAXPATHLEN = 2048;
-    std::vector<char> buf(MAXPATHLEN);
     readlink("/proc/self/exe", buf.data(), buf.size());
-    result.assign(buf.data());
 #endif
+	result.assign(buf.data());
+
 	return result;
 }
 
diff --git a/src/visual/include/pw/visual/shader.hpp b/src/visual/include/pw/visual/shader.hpp
index b1876ea..e522bc1 100644
--- a/src/visual/include/pw/visual/shader.hpp
+++ b/src/visual/include/pw/visual/shader.hpp
@@ -17,7 +17,7 @@ public:
     ~shader();
 
 	enum code_type {
-		vertex,				//<
+		vertex,
 		fragment,
 		geometry,
 		compute
@@ -36,7 +36,8 @@ public:
 
 	int uniform_location(std::string const & name) const;
 
-	template<typename T> shader & bind(std::string const & name, T&& value)
+	template<typename T>
+	shader & bind(std::string const & name, T&& value)
 	{
 		int location = uniform_location(name);
 		if (location >= 0)
diff --git a/src/visual/include/pw/visual/texture.hpp b/src/visual/include/pw/visual/texture.hpp
index 2391b72..bad1efc 100644
--- a/src/visual/include/pw/visual/texture.hpp
+++ b/src/visual/include/pw/visual/texture.hpp
@@ -49,6 +49,8 @@ class texture {
 	void set_wrap(wrap_mode w);
 	wrap_mode wrap() const { return _wrap; }
 
+	void generate_mipmaps();
+
 protected:
 
 	shared_ptr<image> _image;
diff --git a/src/visual/src/pipeline.cpp b/src/visual/src/pipeline.cpp
index c7ec474..eb25bc4 100644
--- a/src/visual/src/pipeline.cpp
+++ b/src/visual/src/pipeline.cpp
@@ -14,6 +14,10 @@ namespace pw {
 
 class command {
 
+};
+
+class mesh_command : command {
+
 //	shader
 // vertexarray
 
@@ -26,9 +30,9 @@ class queue {
 
 struct triangle_renderer
 {
-    GLuint vbo = 0;
-    GLuint vao = 0;
-    GLuint shader_programme = 0;
+//    GLuint vbo = 0;
+//    GLuint vao = 0;
+//    GLuint shader_programme = 0;
 
     shader shader_p;
     mesh amesh;
@@ -42,11 +46,12 @@ struct triangle_renderer
     void setup()
     {
         mesh::vertex3array_t vertices = {
-             { 0.0f,  0.5f,  0.0f}
-            ,{ 0.5f, -0.5f,  0.0f}
-            ,{-0.5f, -0.5f,  0.0f}
+			 { 0.0f,  0.5f,  0.0f} // 0
+			,{ 0.5f, -0.5f,  0.0f} // 1
+			,{-0.5f, -0.5f,  0.0f} // 2
         };
 
+		// actual indices
         mesh::indexarray_t indices = { 0, 1, 2};
 
         amesh.set_indices(indices);
@@ -109,6 +114,27 @@ struct triangle_renderer
 				  frag_colour = input_color;
 				})";
 
+
+
+		const char* vertex_shader_2 = R"(
+				#version 400
+				in vec3 vertex_p;
+				in vec3 normal_p;
+
+				void main() {
+					gl_Position = vec4(vp, 1.0);
+				}
+				)";
+
+		const char *fragment_shader_2 = R"(
+				#version 400
+				uniform vec4 input_color = vec4(1.0, 0.0, 0.0, 1.0);
+				out vec4 frag_colour;
+				void main() {
+				  frag_colour = input_color;
+				})";
+
+
         shader_p.set_source(fragment_shader,shader::fragment);
         shader_p.set_source(vertex_shader,shader::vertex);
 
diff --git a/src/visual/src/shader.cpp b/src/visual/src/shader.cpp
index d412293..5419046 100644
--- a/src/visual/src/shader.cpp
+++ b/src/visual/src/shader.cpp
@@ -116,7 +116,6 @@ struct shader::impl
 
 			debug::e() << info_log.get();
 
-
 			/* Handle the error in an appropriate way such as displaying a message or writing to a log file. */
 			/* In this simple program, we'll just leave */
 
diff --git a/src/visual/src/texture.cpp b/src/visual/src/texture.cpp
index c562559..2bad5f4 100644
--- a/src/visual/src/texture.cpp
+++ b/src/visual/src/texture.cpp
@@ -44,6 +44,9 @@ struct texture::impl {
 
 		glSamplerParameteri(_texture_sampler, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 
+//		glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
+//		glTexParameteri(GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, GL_LINEAR_MIPMAP_LINEAR);
+
 		glBindTexture(gl_shape(),0);
 	}
 
@@ -51,6 +54,11 @@ struct texture::impl {
 	{
 
 	}
+
+	void generate_mipmaps()
+	{
+		glGenerateMipmap(gl_shape());
+	}
 };
 
 
@@ -92,5 +100,10 @@ void texture::set_wrap(wrap_mode w)
 	_wrap = w;
 }
 
+void texture::generate_mipmaps()
+{
+	_impl->generate_mipmaps();
+}
+
 
 }
diff --git a/src/visual/src/vertex_array.cpp b/src/visual/src/vertex_array.cpp
index 13cd436..f4befe0 100644
--- a/src/visual/src/vertex_array.cpp
+++ b/src/visual/src/vertex_array.cpp
@@ -30,6 +30,11 @@ struct vertex_array::impl {
 
 	void create(const mesh& m)
 	{
+		// not sure ...
+		if (ready()) {
+			destroy();
+		}
+
 		glGenVertexArrays(1,&_vao);
 		glBindVertexArray(_vao);