| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| #ifndef GL_UTILS_H |
| #define GL_UTILS_H |
| |
| #include <assert.h> |
| #include <inttypes.h> |
| #include <stdio.h> |
| |
| typedef enum { |
| GLES_1_1 = 1, |
| GLES_2_0 = 2, |
| MAX_GLES_VERSION //Must be last |
| } GLESVersion; |
| |
| bool isPowerOf2(int num); |
| |
| // <EGL/egl.h> defines many types as 'void*' while they're really |
| // implemented as unsigned integers. These convenience template functions |
| // help casting between them safely without generating compiler warnings. |
| inline void* SafePointerFromUInt(unsigned int handle) { |
| return (void*)(uintptr_t)(handle); |
| } |
| |
| inline unsigned int SafeUIntFromPointerFileLine(const void* ptr, |
| const char* file, int line) { |
| #if 1 |
| // Ignore the assert below to avoid crashing when running older |
| // system images, which might have buggy encoder libraries. Print |
| // an error message though. |
| if ((uintptr_t)(ptr) != (unsigned int)(uintptr_t)(ptr)) { |
| fprintf(stderr, "(%s:%d) EmuGL:WARNING: bad generic pointer %p\n", |
| file, line, ptr); |
| } |
| #else |
| // Assertion error if the pointer contains a value that does not fit |
| // in an unsigned integer! |
| assert((uintptr_t)(ptr) == (unsigned int)(uintptr_t)(ptr)); |
| #endif |
| return (unsigned int)(uintptr_t)(ptr); |
| } |
| |
| #define SafeUIntFromPointer(ptr) \ |
| SafeUIntFromPointerFileLine((ptr), __FILE__, __LINE__) |
| |
| #endif |