Resubmit 35500: Added an application framework for demos. Ported hellotriangl...

third_party/gles_book_examples/Common/Include/esUtil.h

Index: third_party/gles_book_examples/Common/Include/esUtil.h
===================================================================
--- third_party/gles_book_examples/Common/Include/esUtil.h	(revision 35627)
+++ third_party/gles_book_examples/Common/Include/esUtil.h	(working copy)
@@ -21,37 +21,18 @@
 //  Includes
 //
 #include <GLES2/gl2.h>
-#include <EGL/egl.h>
 
 #ifdef __cplusplus
-
 extern "C" {
-#endif
+#endif  // __cplusplus
 
-   
-///
-//  Macros
-//
-#define ESUTIL_API  __cdecl
-#define ESCALLBACK  __cdecl
+#ifndef FALSE
+#define FALSE 0
+#endif  // FALSE
+#ifndef TRUE
+#define TRUE 1
+#endif  // TRUE
 
-
-/// esCreateWindow flag - RGB color buffer
-#define ES_WINDOW_RGB           0
-/// esCreateWindow flag - ALPHA color buffer
-#define ES_WINDOW_ALPHA         1 
-/// esCreateWindow flag - depth buffer
-#define ES_WINDOW_DEPTH         2 
-/// esCreateWindow flag - stencil buffer
-#define ES_WINDOW_STENCIL       4
-/// esCreateWindow flat - multi-sample buffer
-#define ES_WINDOW_MULTISAMPLE   8
-
-
-///
-// Types
-//
-
 typedef struct
 {
     GLfloat   m[4][4];
@@ -67,84 +48,20 @@
 
    /// Window height
    GLint       height;
-
-   /// Window handle
-   EGLNativeWindowType  hWnd;
-
-   /// EGL display
-   EGLDisplay  eglDisplay;
-      
-   /// EGL context
-   EGLContext  eglContext;
-
-   /// EGL surface
-   EGLSurface  eglSurface;
-
-   /// Callbacks
-   void (ESCALLBACK *drawFunc) ( void* );
-   void (ESCALLBACK *keyFunc) ( void*, unsigned char, int, int );
-   void (ESCALLBACK *updateFunc) ( void*, float deltaTime );
 } ESContext;
 
-
-///
-//  Public Functions
 //
-
-//
 ///
 /// \brief Initialize ES framework context.  This must be called before calling any other functions.
 /// \param esContext Application context
 //
-void ESUTIL_API esInitContext ( ESContext *esContext );
+extern void esInitContext ( ESContext *esContext );
 
 //
-/// \brief Create a window with the specified parameters
-/// \param esContext Application context
-/// \param title Name for title bar of window
-/// \param width Width in pixels of window to create
-/// \param height Height in pixels of window to create
-/// \param flags Bitfield for the window creation flags 
-///         ES_WINDOW_RGB     - specifies that the color buffer should have R,G,B channels
-///         ES_WINDOW_ALPHA   - specifies that the color buffer should have alpha
-///         ES_WINDOW_DEPTH   - specifies that a depth buffer should be created
-///         ES_WINDOW_STENCIL - specifies that a stencil buffer should be created
-///         ES_WINDOW_MULTISAMPLE - specifies that a multi-sample buffer should be created
-/// \return GL_TRUE if window creation is succesful, GL_FALSE otherwise
-GLboolean ESUTIL_API esCreateWindow ( ESContext *esContext, const char *title, GLint width, GLint height, GLuint flags );
-
-//
-/// \brief Start the main loop for the OpenGL ES application
-/// \param esContext Application context
-//
-void ESUTIL_API esMainLoop ( ESContext *esContext );
-
-//
-/// \brief Register a draw callback function to be used to render each frame
-/// \param esContext Application context
-/// \param drawFunc Draw callback function that will be used to render the scene
-//
-void ESUTIL_API esRegisterDrawFunc ( ESContext *esContext, void (ESCALLBACK *drawFunc) ( ESContext* ) );
-
-//
-/// \brief Register an update callback function to be used to update on each time step
-/// \param esContext Application context
-/// \param updateFunc Update callback function that will be used to render the scene
-//
-void ESUTIL_API esRegisterUpdateFunc ( ESContext *esContext, void (ESCALLBACK *updateFunc) ( ESContext*, float ) );
-
-//
-/// \brief Register an keyboard input processing callback function
-/// \param esContext Application context
-/// \param keyFunc Key callback function for application processing of keyboard input
-//
-void ESUTIL_API esRegisterKeyFunc ( ESContext *esContext, 
-                                    void (ESCALLBACK *drawFunc) ( ESContext*, unsigned char, int, int ) );
-//
 /// \brief Log a message to the debug output for the platform
 /// \param formatStr Format string for error log.  
 //
-void ESUTIL_API esLogMessage ( const char *formatStr, ... );
+extern void esLogMessage ( const char *formatStr, ... );
 
 //
 ///
@@ -153,7 +70,7 @@
 /// \param shaderSrc Shader source string
 /// \return A new shader object on success, 0 on failure
 //
-GLuint ESUTIL_API esLoadShader ( GLenum type, const char *shaderSrc );
+extern GLuint esLoadShader ( GLenum type, const char *shaderSrc );
 
 //
 ///
@@ -163,7 +80,7 @@
 /// \param fragShaderSrc Fragment shader source code
 /// \return A new program object linked with the vertex/fragment shader pair, 0 on failure
 //
-GLuint ESUTIL_API esLoadProgram ( const char *vertShaderSrc, const char *fragShaderSrc );
+extern GLuint esLoadProgram ( const char *vertShaderSrc, const char *fragShaderSrc );
 
 
 //
@@ -177,8 +94,8 @@
 /// \return The number of indices required for rendering the buffers (the number of indices stored in the indices array
 ///         if it is not NULL ) as a GL_TRIANGLE_STRIP
 //
-int ESUTIL_API esGenSphere ( int numSlices, float radius, GLfloat **vertices, GLfloat **normals, 
-                             GLfloat **texCoords, GLuint **indices );
+extern int esGenSphere ( int numSlices, float radius, GLfloat **vertices, GLfloat **normals, 
+                         GLfloat **texCoords, GLuint **indices );
 
 //
 /// \brief Generates geometry for a cube.  Allocates memory for the vertex data and stores 
@@ -191,8 +108,8 @@
 /// \return The number of indices required for rendering the buffers (the number of indices stored in the indices array
 ///         if it is not NULL ) as a GL_TRIANGLES
 //
-int ESUTIL_API esGenCube ( float scale, GLfloat **vertices, GLfloat **normals, 
-                           GLfloat **texCoords, GLuint **indices );
+extern int esGenCube ( float scale, GLfloat **vertices, GLfloat **normals, 
+                       GLfloat **texCoords, GLuint **indices );
 
 //
 /// \brief Loads a 24-bit TGA image from a file
@@ -201,7 +118,7 @@
 /// \param height Height of loaded image in pixels
 ///  \return Pointer to loaded image.  NULL on failure. 
 //
-char* ESUTIL_API esLoadTGA ( char *fileName, int *width, int *height );
+extern char* esLoadTGA ( char *fileName, int *width, int *height );
 
 
 //
@@ -209,14 +126,14 @@
 /// \param result Specifies the input matrix.  Scaled matrix is returned in result.
 /// \param sx, sy, sz Scale factors along the x, y and z axes respectively
 //
-void ESUTIL_API esScale(ESMatrix *result, GLfloat sx, GLfloat sy, GLfloat sz);
+extern void esScale(ESMatrix *result, GLfloat sx, GLfloat sy, GLfloat sz);
 
 //
 /// \brief multiply matrix specified by result with a translation matrix and return new matrix in result
 /// \param result Specifies the input matrix.  Translated matrix is returned in result.
 /// \param tx, ty, tz Scale factors along the x, y and z axes respectively
 //
-void ESUTIL_API esTranslate(ESMatrix *result, GLfloat tx, GLfloat ty, GLfloat tz);
+extern void esTranslate(ESMatrix *result, GLfloat tx, GLfloat ty, GLfloat tz);
 
 //
 /// \brief multiply matrix specified by result with a rotation matrix and return new matrix in result
@@ -224,7 +141,7 @@
 /// \param angle Specifies the angle of rotation, in degrees.
 /// \param x, y, z Specify the x, y and z coordinates of a vector, respectively
 //
-void ESUTIL_API esRotate(ESMatrix *result, GLfloat angle, GLfloat x, GLfloat y, GLfloat z);
+extern void esRotate(ESMatrix *result, GLfloat angle, GLfloat x, GLfloat y, GLfloat z);
 
 //
 // \brief multiply matrix specified by result with a perspective matrix and return new matrix in result
@@ -233,7 +150,7 @@
 /// \param bottom, top Coordinates for the bottom and top horizontal clipping planes
 /// \param nearZ, farZ Distances to the near and far depth clipping planes.  Both distances must be positive.
 //
-void ESUTIL_API esFrustum(ESMatrix *result, float left, float right, float bottom, float top, float nearZ, float farZ);
+extern void esFrustum(ESMatrix *result, float left, float right, float bottom, float top, float nearZ, float farZ);
 
 //
 /// \brief multiply matrix specified by result with a perspective matrix and return new matrix in result
@@ -243,7 +160,7 @@
 /// \param nearZ Near plane distance
 /// \param farZ Far plane distance
 //
-void ESUTIL_API esPerspective(ESMatrix *result, float fovy, float aspect, float nearZ, float farZ);
+extern void esPerspective(ESMatrix *result, float fovy, float aspect, float nearZ, float farZ);
 
 //
 /// \brief multiply matrix specified by result with a perspective matrix and return new matrix in result
@@ -252,23 +169,23 @@
 /// \param bottom, top Coordinates for the bottom and top horizontal clipping planes
 /// \param nearZ, farZ Distances to the near and far depth clipping planes.  These values are negative if plane is behind the viewer
 //
-void ESUTIL_API esOrtho(ESMatrix *result, float left, float right, float bottom, float top, float nearZ, float farZ);
+extern void esOrtho(ESMatrix *result, float left, float right, float bottom, float top, float nearZ, float farZ);
 
 //
 /// \brief perform the following operation - result matrix = srcA matrix * srcB matrix
 /// \param result Returns multiplied matrix
 /// \param srcA, srcB Input matrices to be multiplied
 //
-void ESUTIL_API esMatrixMultiply(ESMatrix *result, ESMatrix *srcA, ESMatrix *srcB);
+extern void esMatrixMultiply(ESMatrix *result, ESMatrix *srcA, ESMatrix *srcB);
 
 //
 //// \brief return an indentity matrix 
 //// \param result returns identity matrix
 //
-void ESUTIL_API esMatrixLoadIdentity(ESMatrix *result);
+extern void esMatrixLoadIdentity(ESMatrix *result);
 
 #ifdef __cplusplus
 }
-#endif
+#endif  // __cplusplus
 
 #endif // ESUTIL_H