/* * 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 #include #ifdef GL_API #undef GL_API #endif #define GL_API #ifdef GL_APIENTRY #undef GL_APIENTRY #endif #ifdef GL_APIENTRYP #undef GL_APIENTRYP #endif #define GL_APIENTRYP #ifndef ANDROID #define GL_APIENTRY #endif #include #include #include #include #ifdef __cplusplus extern "C" { #endif size_t glSizeof(GLenum type); size_t glUtilsParamSize(GLenum param); void glUtilsPackPointerData(unsigned char *dst, unsigned char *str, int size, GLenum type, unsigned int stride, unsigned int datalen); void glUtilsWritePackPointerData(void* stream, unsigned char *src, int size, GLenum type, unsigned int stride, unsigned int datalen); int glUtilsPixelBitSize(GLenum format, GLenum type); void glUtilsPackStrings(char *ptr, char **strings, GLint *length, GLsizei count); int glUtilsCalcShaderSourceLen(char **strings, GLint *length, GLsizei count); #ifdef __cplusplus }; #endif namespace GLUtils { template void minmax(T *indices, int count, int *min, int *max) { *min = -1; *max = -1; T *ptr = indices; for (int i = 0; i < count; i++) { if (*min == -1 || *ptr < *min) *min = *ptr; if (*max == -1 || *ptr > *max) *max = *ptr; ptr++; } } template void shiftIndices(T *indices, int count, int offset) { T *ptr = indices; for (int i = 0; i < count; i++) { *ptr += offset; ptr++; } } template void shiftIndices(T *src, T *dst, int count, int offset) { for (int i = 0; i < count; i++) { *dst = *src + offset; dst++; src++; } } }; // namespace GLUtils #endif