convert GLShader to a Ruby class

src/GLProgram.cc

@@ -1,3 +1,4 @@
+#if 0
 #include "GLProgram.h"
 #include <stdint.h>
 #include <iostream>
@@ -80,3 +81,4 @@ GLint GLProgram::get_uniform(const std::string & uniform_name)
     }
     return -1;
 }
+#endif

src/GLProgram.h

@@ -1,3 +1,4 @@
+#if 0
 #ifndef GLPROGRAM_H
 #define GLPROGRAM_H
 
@@ -25,3 +26,4 @@ protected:
 typedef Ref<GLProgram> GLProgramRef;
 
 #endif
+#endif

src/GLShader.cc

@@ -1,69 +1,99 @@
 #include "GLShader.h"
-#include <iostream>
+#include "ruby.h"
+#include "gl3w.h"
 
-using namespace std;
-
-GLShader::~GLShader()
+typedef struct
 {
-    if (m_id > 0)
+    GLuint id;
+} GLShader;
+
+static VALUE ruby_class;
+
+static const char * get_shader_type_name(GLenum shader_type)
+{
+    switch (shader_type)
     {
-        glDeleteShader(m_id);
+    case GL_VERTEX_SHADER:
+        return "vertex";
+    case GL_FRAGMENT_SHADER:
+        return "fragment";
+    default:
+        return "unknown";
     }
 }
 
-bool GLShader::create(GLenum shader_type, const char *source, size_t size)
+static GLuint create_shader(GLenum shader_type, const char *source, size_t size)
 {
+    GLuint id = glCreateShader(shader_type);
+    if (id > 0)
+    {
         GLint status;
 
-    m_id = glCreateShader(shader_type);
-    if (m_id > 0)
-    {
         GLint length = size;
-        glShaderSource(m_id, 1, &source, &length);
+        glShaderSource(id, 1, &source, &length);
 
-        glCompileShader(m_id);
+        glCompileShader(id);
 
-        glGetShaderiv(m_id, GL_COMPILE_STATUS, &status);
+        glGetShaderiv(id, GL_COMPILE_STATUS, &status);
         if (status == GL_TRUE)
         {
             return true;
         }
 
         GLint log_length;
-        cerr << "Error compiling ";
-        switch (shader_type)
-        {
-            case GL_VERTEX_SHADER:
-                cerr << "vertex";
-                break;
-            case GL_FRAGMENT_SHADER:
-                cerr << "fragment";
-                break;
-        }
-        cerr << " shader" << endl;
-        glGetShaderiv(m_id, GL_INFO_LOG_LENGTH, &log_length);
+        glGetShaderiv(id, GL_INFO_LOG_LENGTH, &log_length);
         if (log_length > 0)
         {
-            char * log = new char[log_length];
-            glGetShaderInfoLog(m_id, log_length, &log_length, log);
-            cerr << "Shader Log:" << endl << log << endl;
-            delete[] log;
+            char log[log_length + 1];
+            glGetShaderInfoLog(id, log_length, &log_length, log);
+            log[log_length] = '\0';
+            glDeleteShader(id);
+            rb_raise(rb_eRuntimeError,
+                     "Error compiling %s shader:\n%s\n%s\n%s\n",
+                     get_shader_type_name(shader_type),
+                     "--------------------",
+                     log,
+                     "--------------------");
         }
-        glDeleteShader(m_id);
+        else
+        {
+            glDeleteShader(id);
+            rb_raise(rb_eRuntimeError,
+                     "Error compiling %s shader",
+                     get_shader_type_name(shader_type));
         }
-    return false;
+    }
+
+    return id;
 }
 
-bool GLShader::create(GLenum shader_type, PathRef path)
+static void GLShader_free(void * ptr)
 {
-    uint8_t * file;
-    size_t size;
-    if (!path->read(&file, &size))
-        return false;
-    if (size == 0u)
-        return false;
+    GLShader * glshader = (GLShader *)ptr;
 
-    bool result = create(shader_type, (const char *)file, size);
-    delete[] file;
-    return result;
+    if (glshader->id > 0)
+    {
+        glDeleteShader(glshader->id);
+    }
+
+    delete glshader;
+}
+
+static VALUE GLShader_new(VALUE klass, VALUE type, VALUE source)
+{
+    GLShader * glshader = new GLShader();
+
+#if 0
+    /* TODO */
+    glshader->id = create_shader();
+#endif
+
+    return Data_Wrap_Struct(klass, NULL, GLShader_free, glshader);
+}
+
+void GLShader_Init()
+{
+    ruby_class = rb_define_class("GLShader", rb_cObject);
+    rb_define_singleton_method(ruby_class, "new", (VALUE(*)(...))GLShader_new, 2);
+    rb_define_attr(ruby_class, "id", 0, 1);
 }

src/GLShader.h

@@ -1,22 +1,6 @@
 #ifndef GLSHADER_H
 #define GLSHADER_H
 
-#include "Ref.h"
-#include "Path.h"
-#include "gl3w.h"
-
-class GLShader
-{
-public:
-    GLShader() { m_id = 0u; }
-    ~GLShader();
-    bool create(GLenum shader_type, const char *source, size_t size);
-    bool create(GLenum shader_type, PathRef path);
-    GLuint get_id() { return m_id; }
-    bool valid() { return m_id > 0; }
-protected:
-    GLuint m_id;
-};
-typedef Ref<GLShader> GLShaderRef;
+void GLShader_Init();
 
 #endif

src/GUI.cc

@@ -1,10 +1,8 @@
+#if 0
 #include "GUI.h"
 #include "gl3w.h"
 #include <iostream>
 
-#define WIDTH   500
-#define HEIGHT  500
-
 bool GUI::load()
 {
     glClearColor (0.0, 0.0, 0.0, 0.0);
@@ -146,3 +144,4 @@ void GUI::draw_rect(int x, int y, int width, int height, float r, float g, float
     glVertexAttribIPointer(0, 2, GL_INT, 0, 0);
     glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
 }
+#endif

src/GUI.h

@@ -1,3 +1,4 @@
+#if 0
 #ifndef JES_GUI_H
 #define JES_GUI_H
 
@@ -35,3 +36,4 @@ protected:
 typedef Ref<GUI> GUIRef;
 
 #endif
+#endif

src/Window.cc

@@ -59,7 +59,7 @@ static void Window_free(void * ptr)
     if (window->sdl_window)
         SDL_DestroyWindow(window->sdl_window);
 
-    free(window);
+    delete window;
 }
 
 static VALUE Window_new(VALUE klass)
@@ -72,7 +72,7 @@ static VALUE Window_new(VALUE klass)
     }
 
     Init_SDL();
-    Window * window = (Window *)malloc(sizeof(Window));
+    Window * window = new Window();
     window->sdl_window = SDL_CreateWindow("jes",
                                           SDL_WINDOWPOS_UNDEFINED,
                                           SDL_WINDOWPOS_UNDEFINED,