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 "angle_gl.h" 13 #include <string> 14 #include <math.h> 15 16 namespace gl 17 { 18 19 int VariableComponentCount(GLenum type); 20 GLenum VariableComponentType(GLenum type); 21 size_t VariableComponentSize(GLenum type); 22 size_t VariableInternalSize(GLenum type); 23 size_t VariableExternalSize(GLenum type); 24 GLenum VariableBoolVectorType(GLenum type); 25 int VariableRowCount(GLenum type); 26 int VariableColumnCount(GLenum type); 27 bool IsSampler(GLenum type); 28 bool IsMatrixType(GLenum type); 29 GLenum TransposeMatrixType(GLenum type); 30 int VariableRegisterCount(GLenum type); 31 int MatrixRegisterCount(GLenum type, bool isRowMajorMatrix); 32 int MatrixComponentCount(GLenum type, bool isRowMajorMatrix); 33 int VariableSortOrder(GLenum type); 34 35 int AllocateFirstFreeBits(unsigned int *bits, unsigned int allocationSize, unsigned int bitsSize); 36 37 bool IsCubemapTextureTarget(GLenum target); 38 39 bool IsTriangleMode(GLenum drawMode); 40 41 // [OpenGL ES 3.0.2] Section 2.3.1 page 14 42 // Data Conversion For State-Setting Commands 43 // Floating-point values are rounded to the nearest integer, instead of truncated, as done by static_cast. 44 template <typename outT> outT iround(GLfloat value) { return static_cast<outT>(value > 0.0f ? floor(value + 0.5f) : ceil(value - 0.5f)); } 45 template <typename outT> outT uiround(GLfloat value) { return static_cast<outT>(value + 0.5f); } 46 47 } 48 49 std::string getTempPath(); 50 void writeFile(const char* path, const void* data, size_t size); 51 52 #endif // LIBGLESV2_UTILITIES_H 53
