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      1 /*
      2  * Copyright (C) 2013 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef _GL_UTIL_H_
     18 #define _GL_UTIL_H_
     19 
     20 /* convenience */
     21 
     22 GLuint load_program(const char *vert_src, const char *frag_src);
     23 void matrix_init_ortho(GLfloat *m, float w, float h);
     24 
     25 /* context setup / teardown */
     26 
     27 int egl_create(EGLDisplay *_display, EGLSurface *_surface, int *_w, int *_h);
     28 void egl_destroy(EGLDisplay display, EGLSurface surface);
     29 
     30 /* internals needed by util.c */
     31 
     32 struct CNativeWindow;
     33 struct CNativeWindow *cnw_create(void);
     34 void cnw_destroy(struct CNativeWindow *win);
     35 void cnw_info(struct CNativeWindow *win,
     36 	unsigned *w, unsigned *h, unsigned *fmt);
     37 
     38 #endif
     39