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102 lines
3.7 KiB
C++
102 lines
3.7 KiB
C++
//
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// Copyright (c) 2002-2013 The ANGLE Project Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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//
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// utilities.h: Conversion functions and other utility routines.
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#ifndef COMMON_UTILITIES_H_
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#define COMMON_UTILITIES_H_
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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#include "angle_gl.h"
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#include <string>
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#include <math.h>
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#include "common/mathutil.h"
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namespace gl
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{
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int VariableComponentCount(GLenum type);
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GLenum VariableComponentType(GLenum type);
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size_t VariableComponentSize(GLenum type);
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size_t VariableInternalSize(GLenum type);
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size_t VariableExternalSize(GLenum type);
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GLenum VariableBoolVectorType(GLenum type);
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int VariableRowCount(GLenum type);
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int VariableColumnCount(GLenum type);
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bool IsSamplerType(GLenum type);
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GLenum SamplerTypeToTextureType(GLenum samplerType);
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bool IsMatrixType(GLenum type);
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GLenum TransposeMatrixType(GLenum type);
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int VariableRegisterCount(GLenum type);
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int MatrixRegisterCount(GLenum type, bool isRowMajorMatrix);
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int MatrixComponentCount(GLenum type, bool isRowMajorMatrix);
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int VariableSortOrder(GLenum type);
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int AllocateFirstFreeBits(unsigned int *bits, unsigned int allocationSize, unsigned int bitsSize);
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static const GLenum FirstCubeMapTextureTarget = GL_TEXTURE_CUBE_MAP_POSITIVE_X;
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static const GLenum LastCubeMapTextureTarget = GL_TEXTURE_CUBE_MAP_NEGATIVE_Z;
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bool IsCubeMapTextureTarget(GLenum target);
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size_t CubeMapTextureTargetToLayerIndex(GLenum target);
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GLenum LayerIndexToCubeMapTextureTarget(size_t index);
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// Parse the base uniform name and array index. Returns the base name of the uniform. outSubscript is
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// set to GL_INVALID_INDEX if the provided name is not an array or the array index is invalid.
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std::string ParseUniformName(const std::string &name, size_t *outSubscript);
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// Find the range of index values in the provided indices pointer. Primitive restart indices are
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// only counted in the range if primitive restart is disabled.
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IndexRange ComputeIndexRange(GLenum indexType,
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const GLvoid *indices,
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size_t count,
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bool primitiveRestartEnabled);
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// Get the primitive restart index value for the given index type.
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GLuint GetPrimitiveRestartIndex(GLenum indexType);
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bool IsTriangleMode(GLenum drawMode);
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// [OpenGL ES 3.0.2] Section 2.3.1 page 14
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// Data Conversion For State-Setting Commands
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// Floating-point values are rounded to the nearest integer, instead of truncated, as done by static_cast.
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template <typename outT> outT iround(GLfloat value) { return static_cast<outT>(value > 0.0f ? floor(value + 0.5f) : ceil(value - 0.5f)); }
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template <typename outT> outT uiround(GLfloat value) { return static_cast<outT>(value + 0.5f); }
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unsigned int ParseAndStripArrayIndex(std::string *name);
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} // namespace gl
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namespace egl
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{
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static const EGLenum FirstCubeMapTextureTarget = EGL_GL_TEXTURE_CUBE_MAP_POSITIVE_X_KHR;
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static const EGLenum LastCubeMapTextureTarget = EGL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_KHR;
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bool IsCubeMapTextureTarget(EGLenum target);
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size_t CubeMapTextureTargetToLayerIndex(EGLenum target);
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EGLenum LayerIndexToCubeMapTextureTarget(size_t index);
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bool IsTextureTarget(EGLenum target);
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bool IsRenderbufferTarget(EGLenum target);
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}
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namespace egl_gl
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{
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GLenum EGLCubeMapTargetToGLCubeMapTarget(EGLenum eglTarget);
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GLenum EGLImageTargetToGLTextureTarget(EGLenum eglTarget);
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GLuint EGLClientBufferToGLObjectHandle(EGLClientBuffer buffer);
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}
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#if !defined(ANGLE_ENABLE_WINDOWS_STORE)
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std::string getTempPath();
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void writeFile(const char* path, const void* data, size_t size);
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#endif
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#if defined (ANGLE_PLATFORM_WINDOWS)
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void ScheduleYield();
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#endif
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#endif // COMMON_UTILITIES_H_
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