1 // 2 // Copyright (c) 2002-2013 The ANGLE Project Authors. All rights reserved. 3 // Use of this source code is governed by a BSD-style license that can be 4 // found in the LICENSE file. 5 // 6 7 // utilities.h: Conversion functions and other utility routines. 8 9 #ifndef LIBGLESV2_UTILITIES_H 10 #define LIBGLESV2_UTILITIES_H 11 12 #include <GLES3/gl3.h> 13 #include <GLES3/gl3ext.h> 14 #include <GLES2/gl2.h> 15 #include <GLES2/gl2ext.h> 16 17 #include <string> 18 #include <math.h> 19 20 namespace gl 21 { 22 23 int UniformComponentCount(GLenum type); 24 GLenum UniformComponentType(GLenum type); 25 size_t UniformComponentSize(GLenum type); 26 size_t UniformInternalSize(GLenum type); 27 size_t UniformExternalSize(GLenum type); 28 GLenum UniformBoolVectorType(GLenum type); 29 int VariableRowCount(GLenum type); 30 int VariableColumnCount(GLenum type); 31 bool IsSampler(GLenum type); 32 bool IsMatrixType(GLenum type); 33 GLenum TransposeMatrixType(GLenum type); 34 int AttributeRegisterCount(GLenum type); 35 int MatrixRegisterCount(GLenum type, bool isRowMajorMatrix); 36 int MatrixComponentCount(GLenum type, bool isRowMajorMatrix); 37 38 int AllocateFirstFreeBits(unsigned int *bits, unsigned int allocationSize, unsigned int bitsSize); 39 40 bool IsCubemapTextureTarget(GLenum target); 41 bool IsInternalTextureTarget(GLenum target, GLuint clientVersion); 42 43 bool IsTriangleMode(GLenum drawMode); 44 45 // [OpenGL ES 3.0.2] Section 2.3.1 page 14 46 // Data Conversion For State-Setting Commands 47 // Floating-point values are rounded to the nearest integer, instead of truncated, as done by static_cast. iround(GLfloat value)48template <typename outT> outT iround(GLfloat value) { return static_cast<outT>(value > 0.0f ? floor(value + 0.5f) : ceil(value - 0.5f)); } uiround(GLfloat value)49template <typename outT> outT uiround(GLfloat value) { return static_cast<outT>(value + 0.5f); } 50 51 } 52 53 std::string getTempPath(); 54 void writeFile(const char* path, const void* data, size_t size); 55 56 #endif // LIBGLESV2_UTILITIES_H 57