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//
// 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
//
// ESUtil.c
//
// A utility library for OpenGL ES. This library provides a
// basic common framework for the example applications in the
// OpenGL ES 2.0 Programming Guide.
//
///
// Includes
//
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <GLES2/gl2.h>
#include "esUtil.h"
#include "esUtil_win.h"
///
// esInitContext()
//
// Initialize ES utility context. This must be called before calling any other
// functions.
//
void esInitContext ( ESContext *esContext )
{
if ( esContext != NULL )
{
memset( esContext, 0, sizeof( ESContext) );
}
}
///
// esLogMessage()
//
// Log an error message to the debug output for the platform
//
void esLogMessage ( const char *formatStr, ... )
{
va_list params;
char buf[BUFSIZ];
va_start ( params, formatStr );
vsprintf_s ( buf, sizeof(buf), formatStr, params );
printf ( "%s", buf );
va_end ( params );
}
///
// esLoadTGA()
//
// Loads a 24-bit TGA image from a file
//
char* esLoadTGA ( char *fileName, int *width, int *height )
{
char *buffer;
if ( WinTGALoad ( fileName, &buffer, width, height ) )
{
return buffer;
}
return NULL;
}
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