gltk: comment more

libs/gltk/gltk/array.d

@@ -2,10 +2,17 @@ module gltk.array;
 
 import gl;
 
+/**
+ * OpenGL array object.
+ */
 class Array
 {
+    /** Array ID. */
     private GLuint m_id;
 
+    /**
+     * Construct array.
+     */
     this()
     {
         m_id = 0u;
@@ -16,17 +23,26 @@ class Array
         }
     }
 
+    /**
+     * Destruct array.
+     */
     ~this()
     {
         glDeleteVertexArrays(1, &m_id);
     }
 
-    void bind()
+    /**
+     * Bind array.
+     */
+    void bind() const
     {
         glBindVertexArray(m_id);
     }
 
-    @property GLuint id()
+    /**
+     * Get array ID.
+     */
+    @property GLuint id() const
     {
         return m_id;
     }

libs/gltk/gltk/buffer.d

@@ -2,12 +2,23 @@ module gltk.buffer;
 
 import gl;
 
+/**
+ * OpenGL buffer object.
+ */
 class Buffer
 {
+    /** Buffer ID. */
     private GLuint m_id;
 
+    /** Buffer target. */
     private GLenum m_target;
 
+    /**
+     * Construct buffer.
+     *
+     * @param target
+     *   OpenGL buffer target (e.g. GL_ARRAY_BUFFER, GL_ELEMENT_BUFFER)
+     */
     this(GLenum target)
     {
         m_id = 0u;
@@ -19,30 +30,55 @@ class Buffer
         m_target = target;
     }
 
+    /**
+     * Destruct buffer.
+     */
     ~this()
     {
         glDeleteBuffers(1, &m_id);
     }
 
-    void bind()
+    /**
+     * Bind buffer.
+     */
+    void bind() const
     {
         glBindBuffer(m_target, m_id);
     }
 
-    @property GLuint id()
+    /**
+     * Get buffer ID.
+     */
+    @property GLuint id() const
     {
         return m_id;
     }
 
+    /**
+     * Set buffer data.
+     *
+     * @param usage
+     *   OpenGL buffer usage (e.g. GL_STATIC_DRAW, ...)
+     * @param ptr
+     *   Pointer to buffer data.
+     * @param size
+     *   Buffer data size.
+     */
     void set_buffer_data(GLenum usage, const void * ptr, size_t size)
     {
-        bind();
-        glBufferData(m_target, size, ptr, usage);
+        glNamedBufferData(m_id, size, ptr, usage);
     }
 
+    /**
+     * Set buffer data.
+     *
+     * @param usage
+     *   OpenGL buffer usage (e.g. GL_STATIC_DRAW, ...)
+     * @param array
+     *   Buffer data.
+     */
     void set_buffer_data(T)(GLenum usage, T[] arr)
     {
-        bind();
-        glBufferData(m_target, arr.length * arr[0].sizeof, arr.ptr, usage);
+        glNamedBufferData(m_id, arr.length * arr[0].sizeof, arr.ptr, usage);
     }
 }

libs/gltk/gltk/shader.d

@@ -1,35 +1,36 @@
 module gltk.shader;
 
 import gl;
-static import std.file;
 
+/**
+ * OpenGL shader object.
+ */
 class Shader
 {
+    /** Shader ID. */
     private GLuint m_id;
 
-    private GLenum m_shader_type;
-
-    this(GLenum shader_type)
+    /**
+     * Construct shader.
+     *
+     * @param shader_type
+     *   OpenGL shader type (e.g. GL_VERTEX_SHADER, GL_FRAGMENT_SHADER, ...).
+     * @param source
+     *   Shader source.
+     */
+    this(GLenum shader_type, string source)
     {
-        m_shader_type = shader_type;
         m_id = glCreateShader(shader_type);
         if (m_id == 0u)
         {
-            throw new Exception("Failed to allocate an OpenGL shader");
+            throw new Exception("Failed to allocate an OpenGL shader object");
         }
-    }
 
-    ~this()
-    {
-        glDeleteShader(m_id);
-    }
-
-    void set_source(const char * source, int length = -1)
-    {
         GLint status;
 
-        GLint gllength = length;
-        glShaderSource(m_id, 1, &source, &gllength);
+        const(GLchar) * source_string = source.ptr;
+        GLint source_length = cast(GLint)source.length;
+        glShaderSource(m_id, 1, &source_string, &source_length);
 
         glCompileShader(m_id);
 
@@ -40,7 +41,7 @@ class Shader
         }
 
         string message = "Error compiling ";
-        switch (m_shader_type)
+        switch (shader_type)
         {
             case GL_VERTEX_SHADER:
                 message ~= "vertex";
@@ -68,13 +69,18 @@ class Shader
         throw new Exception(message);
     }
 
-    void set_source_from_file(string filename)
+    /**
+     * Destruct shader object.
+     */
+    ~this()
     {
-        const(char)[] file_data = cast(const(char)[])std.file.read(filename);
-        set_source(file_data.ptr, cast(int)file_data.length);
+        glDeleteShader(m_id);
     }
 
-    @property GLuint id()
+    /**
+     * Get shader ID.
+     */
+    @property GLuint id() const
     {
         return m_id;
     }

libs/gltk/gltk/texture.d

@@ -2,10 +2,17 @@ module gltk.texture;
 
 import gl;
 
+/**
+ * OpenGL texture object.
+ */
 class Texture
 {
+    /** Texture ID. */
     private GLuint m_id;
 
+    /**
+     * Construct texture.
+     */
     this()
     {
         m_id = 0u;
@@ -16,21 +23,36 @@ class Texture
         }
     }
 
+    /**
+     * Destruct texture.
+     */
     ~this()
     {
         glDeleteTextures(1, &m_id);
     }
 
+    /**
+     * Bind the texture to a texture target.
+     *
+     * @param target
+     *   Shader target (e.g. GL_TEXTURE_2D, ...)
+     */
     void bind(GLenum target) const
     {
         glBindTexture(target, m_id);
     }
 
-    @property GLuint id()
+    /**
+     * Get texture ID.
+     */
+    @property GLuint id() const
     {
         return m_id;
     }
 
+    /**
+     * Get the smallest power of 2 that is greater than or equal to n.
+     */
     static uint next_power_of_2(uint n)
     {
         n--;