/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __GL_UTILS_H__
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#define __GL_UTILS_H__
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#if PLATFORM_SDK_VERSION < 26
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#include <cutils/log.h>
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#else
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#include <log/log.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#ifdef GL_API
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#undef GL_API
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#endif
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#define GL_API
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#ifdef GL_APIENTRY
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#undef GL_APIENTRY
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#endif
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#ifdef GL_APIENTRYP
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#undef GL_APIENTRYP
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#endif
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#define GL_APIENTRYP
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#ifndef ANDROID
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#define GL_APIENTRY
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#endif
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#include <GLES/gl.h>
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#include <GLES/glext.h>
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#include <GLES2/gl2.h>
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#include <GLES2/gl2ext.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef enum {
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INDIRECT_COMMAND_DRAWARRAYS = 0,
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INDIRECT_COMMAND_DRAWELEMENTS = 1,
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} IndirectCommandType;
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size_t glSizeof(GLenum type);
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size_t glUtilsParamSize(GLenum param);
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void glUtilsPackPointerData(unsigned char *dst, unsigned char *str,
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int size, GLenum type, unsigned int stride,
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unsigned int datalen);
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void glUtilsWritePackPointerData(void* stream, unsigned char *src,
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int size, GLenum type, unsigned int stride,
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unsigned int datalen);
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int glUtilsPixelBitSize(GLenum format, GLenum type);
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void glUtilsPackStrings(char *ptr, char **strings, GLint *length, GLsizei count);
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int glUtilsCalcShaderSourceLen(char **strings, GLint *length, GLsizei count);
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GLenum glUtilsColorAttachmentName(int i);
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int glUtilsColorAttachmentIndex(GLenum attachment);
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GLuint glUtilsIndirectStructSize(IndirectCommandType cmdType);
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#ifdef __cplusplus
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};
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#endif
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namespace GLUtils {
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template <class T> void minmax(const T *indices, int count, int *min, int *max) {
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*min = -1;
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*max = -1;
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const T *ptr = indices;
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for (int i = 0; i < count; i++) {
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if (*min == -1 || *ptr < *min) *min = *ptr;
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if (*max == -1 || *ptr > *max) *max = *ptr;
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ptr++;
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}
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}
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template <class T> void minmaxExcept
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(const T *indices, int count, int *min, int *max,
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bool shouldExclude, T whatExclude) {
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if (!shouldExclude) return minmax(indices, count, min, max);
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*min = -1;
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*max = -1;
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const T *ptr = indices;
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for (int i = 0; i < count; i++) {
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if (*ptr != whatExclude) {
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if (*min == -1 || *ptr < *min) *min = *ptr;
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if (*max == -1 || *ptr > *max) *max = *ptr;
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}
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ptr++;
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}
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}
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template <class T> void shiftIndices(T *indices, int count, int offset) {
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T *ptr = indices;
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for (int i = 0; i < count; i++) {
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*ptr += offset;
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ptr++;
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}
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}
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template <class T> void shiftIndices(const T *src, T *dst, int count, int offset)
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{
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for (int i = 0; i < count; i++) {
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*dst = *src + offset;
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dst++;
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src++;
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}
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}
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template <class T> void shiftIndicesExcept
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(T *indices, int count, int offset,
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bool shouldExclude, T whatExclude) {
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if (!shouldExclude) return shiftIndices(indices, count, offset);
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T *ptr = indices;
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for (int i = 0; i < count; i++) {
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if (*ptr != whatExclude) {
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*ptr += offset;
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}
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ptr++;
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}
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}
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template <class T> void shiftIndicesExcept
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(const T *src, T *dst, int count, int offset,
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bool shouldExclude, T whatExclude) {
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if (!shouldExclude) return shiftIndices(src, dst, count, offset);
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for (int i = 0; i < count; i++) {
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if (*src == whatExclude) {
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*dst = *src;
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} else {
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*dst = *src + offset;
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}
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dst++;
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src++;
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}
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}
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template<class T> T primitiveRestartIndex() {
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return -1;
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}
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}; // namespace GLUtils
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#endif
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