Renamed gles_book_examples to gles2_book to make it shorter and more correct....

third_party/gles_book_examples/Chapter_15/Hello_Triangle_KD/Hello_Triangle_KD.c

Index: third_party/gles_book_examples/Chapter_15/Hello_Triangle_KD/Hello_Triangle_KD.c
===================================================================
--- third_party/gles_book_examples/Chapter_15/Hello_Triangle_KD/Hello_Triangle_KD.c	(revision 35873)
+++ third_party/gles_book_examples/Chapter_15/Hello_Triangle_KD/Hello_Triangle_KD.c	(working copy)
@@ -1,306 +0,0 @@
-//
-// Book:      OpenGL(R) ES 2.0 Programming Guide
-// Authors:   Aaftab Munshi, Dan Ginsburg, Dave Shreiner
-// ISBN-10:   0321502795
-// ISBN-13:   9780321502797
-// Publisher: Addison-Wesley Professional
-// URLs:      http://safari.informit.com/9780321563835
-//            http://www.opengles-book.com
-//
-
-// Hello_Triangle_KD.c
-//
-//    This is a simple example that draws a single triangle with
-//    a minimal vertex/fragment shader using OpenKODE.
-//
-#include <KD/kd.h>
-#include <EGL/egl.h>
-#include <GLES2/gl2.h>
-
-typedef struct
-{
-   // Handle to a program object
-   GLuint programObject;
-
-   // EGL handles
-   EGLDisplay eglDisplay;
-   EGLContext eglContext;
-   EGLSurface eglSurface;
-
-} UserData;
-
-///
-// Create a shader object, load the shader source, and
-// compile the shader.
-//
-GLuint LoadShader ( GLenum type, const char *shaderSrc )
-{
-   GLuint shader;
-   GLint compiled;
-   
-   // Create the shader object
-   shader = glCreateShader ( type );
-
-   if ( shader == 0 )
-   	return 0;
-
-   // Load the shader source
-   glShaderSource ( shader, 1, &shaderSrc, NULL );
-   
-   // Compile the shader
-   glCompileShader ( shader );
-
-   // Check the compile status
-   glGetShaderiv ( shader, GL_COMPILE_STATUS, &compiled );
-
-   if ( !compiled ) 
-   {
-      GLint infoLen = 0;
-
-      glGetShaderiv ( shader, GL_INFO_LOG_LENGTH, &infoLen );
-      
-      if ( infoLen > 1 )
-      {
-         char* infoLog = kdMalloc (sizeof(char) * infoLen );
-
-         glGetShaderInfoLog ( shader, infoLen, NULL, infoLog );
-         kdLogMessage ( infoLog );            
-         
-         kdFree ( infoLog );
-      }
-
-      glDeleteShader ( shader );
-      return 0;
-   }
-
-   return shader;
-
-}
-
-///
-// Initialize the shader and program object
-//
-int Init ( UserData *userData )
-{
-   GLbyte vShaderStr[] =  
-      "attribute vec4 vPosition;    \n"
-      "void main()                  \n"
-      "{                            \n"
-      "   gl_Position = vPosition;  \n"
-      "}                            \n";
-   
-   GLbyte fShaderStr[] =  
-      "precision mediump float;\n"\
-      "void main()                                  \n"
-      "{                                            \n"
-      "  gl_FragColor = vec4 ( 1.0, 0.0, 0.0, 1.0 );\n"
-      "}                                            \n";
-
-   GLuint vertexShader;
-   GLuint fragmentShader;
-   GLuint programObject;
-   GLint linked;
-
-   // Load the vertex/fragment shaders
-   vertexShader = LoadShader ( GL_VERTEX_SHADER, vShaderStr );
-   fragmentShader = LoadShader ( GL_FRAGMENT_SHADER, fShaderStr );
-
-   // Create the program object
-   programObject = glCreateProgram ( );
-   
-   if ( programObject == 0 )
-      return 0;
-
-   glAttachShader ( programObject, vertexShader );
-   glAttachShader ( programObject, fragmentShader );
-
-   // Bind vPosition to attribute 0   
-   glBindAttribLocation ( programObject, 0, "vPosition" );
-
-   // Link the program
-   glLinkProgram ( programObject );
-
-   // Check the link status
-   glGetProgramiv ( programObject, GL_LINK_STATUS, &linked );
-
-   if ( !linked ) 
-   {
-      GLint infoLen = 0;
-
-      glGetProgramiv ( programObject, GL_INFO_LOG_LENGTH, &infoLen );
-      
-      if ( infoLen > 1 )
-      {
-         char* infoLog = kdMalloc (sizeof(char) * infoLen );
-
-         glGetProgramInfoLog ( programObject, infoLen, NULL, infoLog );
-         kdLogMessage ( infoLog );
-         
-         kdFree ( infoLog );
-      }
-
-      glDeleteProgram ( programObject );
-      return FALSE;
-   }
-
-   // Store the program object
-   userData->programObject = programObject;
-
-   glClearColor ( 0.0f, 0.0f, 0.0f, 0.0f );
-   return TRUE;
-}
-
-///
-// Draw a triangle using the shader pair created in Init()
-//
-void Draw ( UserData *userData )
-{
-   GLfloat vVertices[] = {  0.0f,  0.5f, 0.0f, 
-                           -0.5f, -0.5f, 0.0f,
-                            0.5f, -0.5f, 0.0f };
-      
-   // Set the viewport
-   glViewport ( 0, 0, 320, 240 );
-   
-   // Clear the color buffer
-   glClear ( GL_COLOR_BUFFER_BIT );
-
-   // Use the program object
-   glUseProgram ( userData->programObject );
-
-   // Load the vertex data
-   glVertexAttribPointer ( 0, 3, GL_FLOAT, GL_FALSE, 0, vVertices );
-   glEnableVertexAttribArray ( 0 );
-
-   glDrawArrays ( GL_TRIANGLES, 0, 3 );
-
-   eglSwapBuffers ( userData->eglDisplay, userData->eglSurface );
-}
-
-
-///
-// InitEGLContext()
-//
-//    Initialize an EGL rendering context and all associated elements
-//
-EGLBoolean InitEGLContext ( UserData *userData,
-                            KDWindow *window,                             
-                            EGLConfig config )
-{
-   EGLContext context;
-   EGLSurface surface;   
-   EGLint contextAttribs[] = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE, EGL_NONE };
-
-   // Get native window handle
-   EGLNativeWindowType hWnd;
-   if(kdRealizeWindow(window, &hWnd) != 0)
-   {
-      return EGL_FALSE;
-   }
-   surface = eglCreateWindowSurface(userData->eglDisplay, config, hWnd, NULL);
-   if ( surface == EGL_NO_SURFACE )
-   {
-      return EGL_FALSE;
-   }
-
-   // Create a GL context
-   context = eglCreateContext(userData->eglDisplay, config, EGL_NO_CONTEXT, contextAttribs );
-   if ( context == EGL_NO_CONTEXT )
-   {
-      return EGL_FALSE;
-   }   
-
-   // Make the context current
-   if ( !eglMakeCurrent(userData->eglDisplay, surface, surface, context) )
-   {
-      return EGL_FALSE;
-   }
-
-   userData->eglContext = context;
-   userData->eglSurface = surface;
-
-   return EGL_TRUE;
-} 
-
-/// 
-// kdMain() 
-//
-//    Main function for OpenKODE application
-//
-KDint kdMain ( KDint argc, const KDchar *const *argv )
-{
-   EGLint attribList[] =
-   {
-       EGL_RED_SIZE,       8,
-       EGL_GREEN_SIZE,     8,
-       EGL_BLUE_SIZE,      8,
-       EGL_ALPHA_SIZE,     EGL_DONT_CARE,
-       EGL_DEPTH_SIZE,     EGL_DONT_CARE,
-       EGL_STENCIL_SIZE,   EGL_DONT_CARE,
-       EGL_NONE
-   };
-   EGLint majorVersion, 
-         minorVersion;
-   UserData userData;
-   EGLint numConfigs;
-   EGLConfig config;
-   KDWindow *window = KD_NULL;
-
-   userData.eglDisplay = eglGetDisplay( EGL_DEFAULT_DISPLAY );
-
-   // Initialize EGL
-   if ( !eglInitialize(userData.eglDisplay, &majorVersion, &minorVersion) )
-   {
-      return EGL_FALSE;
-   }
-
-   // Get configs
-   if ( !eglGetConfigs(userData.eglDisplay, NULL, 0, &numConfigs) )
-   {
-      return EGL_FALSE;
-   }
-
-   // Choose config
-   if ( !eglChooseConfig(userData.eglDisplay, attribList, &config, 1, &numConfigs) )
-   {
-      return EGL_FALSE;
-   }
-
-
-   // Use OpenKODE to create a Window
-   window = kdCreateWindow ( userData.eglDisplay, config, KD_NULL );
-   if( !window )
-      kdExit ( 0 );
-
-   if ( !InitEGLContext ( &userData, window, config ) )
-      kdExit ( 0 );
-
-   if ( !Init ( &userData ) )
-      kdExit ( 0 );
-
-   // Main Loop
-   while ( 1 )
-   {
-      // Wait for an event
-      const KDEvent *evt = kdWaitEvent ( 0 );
-      if ( evt )
-      {
-         // Exit app
-         if ( evt->type == KD_EVENT_WINDOW_CLOSE)
-            break;
-      }
-
-      // Draw frame
-      Draw ( &userData );
-   }
-
-   // EGL clean up 
-   eglMakeCurrent ( 0, 0, 0, 0 );
-   eglDestroySurface ( userData.eglDisplay, userData.eglSurface );
-   eglDestroyContext ( userData.eglDisplay, userData.eglContext );
-
-   // Destroy the window
-   kdDestroyWindow(window);
-
-   return 0;
-}