ref_gl: fix gles1 and gles2 build

ref_gl/gl_export.h

@@ -1182,7 +1182,6 @@ APIENTRY_LINKAGE void GL_FUNCTION( glTexGeni )(GLenum coord, GLenum pname, GLint
 APIENTRY_LINKAGE void GL_FUNCTION( glTexGeniv )(GLenum coord, GLenum pname, const GLint *params);
 APIENTRY_LINKAGE void GL_FUNCTION( glTexImage1D )(GLenum target, GLint level, GLint internalformat, GLsizei width, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
 APIENTRY_LINKAGE void GL_FUNCTION( glTexImage2D )(GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
-APIENTRY_LINKAGE void GL_FUNCTION( glTexImage2DMultisample )(GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height, GLboolean fixedsamplelocations);
 APIENTRY_LINKAGE void GL_FUNCTION( glTexParameterf )(GLenum target, GLenum pname, GLfloat param);
 APIENTRY_LINKAGE void GL_FUNCTION( glTexParameterfv )(GLenum target, GLenum pname, const GLfloat *params);
 APIENTRY_LINKAGE void GL_FUNCTION( glTexParameteri )(GLenum target, GLenum pname, GLint param);
@@ -1355,6 +1354,10 @@ APIENTRY_LINKAGE void GL_FUNCTION( glGenVertexArrays )( GLsizei n, const GLuint
 APIENTRY_LINKAGE GLboolean GL_FUNCTION( glIsVertexArray )( GLuint array );
 APIENTRY_LINKAGE void GL_FUNCTION( glSwapInterval ) ( int interval );
 
+#if defined( XASH_GLES )
+APIENTRY_LINKAGE void GL_FUNCTION( glTexImage2DMultisample )(GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height, GLboolean fixedsamplelocations);
+#endif /* XASH_GLES */
+
 #if defined( XASH_GL_STATIC ) && !defined( REF_GL_KEEP_MANGLED_FUNCTIONS )
 #define pglGetError glGetError
 #define pglGetString glGetString

ref_gl/gl_image.c

@@ -1047,6 +1047,7 @@ static void GL_TextureImageRAW( gl_texture_t *tex, GLint side, GLint level, GLin
 	}
 	else if( tex->target == GL_TEXTURE_2D_MULTISAMPLE )
 	{
+#if !defined( XASH_GLES )
 		samplesCount = (GLsizei)gEngfuncs.pfnGetCvarFloat("gl_msaa_samples");
 		switch (samplesCount)
 		{
@@ -1059,6 +1060,9 @@ static void GL_TextureImageRAW( gl_texture_t *tex, GLint side, GLint level, GLin
 				samplesCount = 1;
 		}
 		pglTexImage2DMultisample( tex->target, samplesCount, tex->format, width, height, GL_TRUE );
+#else /* XASH_GLES */
+		Con_Printf( S_ERROR "GLES renderer don't support GL_TEXTURE_2D_MULTISAMPLE!\n" );
+#endif /* XASH_GLES */
 	}
 	else // 2D or RECT
 	{