Changes necessary to compile gpu demos on linux. It is not functional yet jus...

third_party/gles2_book/Common/Include/esUtil.h

 //
 // 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
 //
 
@@ skipping 94 matching lines @@
 /// \param normals If not NULL, will contain array of float3 normals
 /// \param texCoords If not NULL, will contain array of float2 texCoords
 /// \param indices If not NULL, will contain the array of indices for the triangle strip
 /// \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
 //
 extern int esGenCube ( float scale, GLfloat **vertices, GLfloat **normals, 
                        GLfloat **texCoords, GLushort **indices );
 
 //
-/// \brief Loads a 24-bit TGA image from a file
-/// \param fileName Name of the file on disk
-/// \param width Width of loaded image in pixels
-/// \param height Height of loaded image in pixels
-///  \return Pointer to loaded image.  NULL on failure. 
-//
-extern char* esLoadTGA ( char *fileName, int *width, int *height );
-
-
-//
 /// \brief multiply matrix specified by result with a scaling matrix and return new matrix in result
 /// \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
 //
 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
@@ skipping 47 matching lines @@
 //// \brief return an indentity matrix 
 //// \param result returns identity matrix
 //
 extern void esMatrixLoadIdentity(ESMatrix *result);
 
 #ifdef __cplusplus
 }
 #endif  // __cplusplus
 
 #endif // ESUTIL_H