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Diffstat (limited to 'src/3rdparty/angle/src/libANGLE/ImageIndex.h')
-rw-r--r-- | src/3rdparty/angle/src/libANGLE/ImageIndex.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/3rdparty/angle/src/libANGLE/ImageIndex.h b/src/3rdparty/angle/src/libANGLE/ImageIndex.h new file mode 100644 index 0000000000..820c650f20 --- /dev/null +++ b/src/3rdparty/angle/src/libANGLE/ImageIndex.h @@ -0,0 +1,79 @@ +// +// Copyright 2014 The ANGLE Project Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. +// + +// ImageIndex.h: A helper struct for indexing into an Image array + +#ifndef LIBANGLE_IMAGE_INDEX_H_ +#define LIBANGLE_IMAGE_INDEX_H_ + +#include "common/mathutil.h" + +#include "angle_gl.h" + +namespace gl +{ + +class ImageIndexIterator; + +struct ImageIndex +{ + GLenum type; + GLint mipIndex; + GLint layerIndex; + + ImageIndex(const ImageIndex &other); + ImageIndex &operator=(const ImageIndex &other); + + bool hasLayer() const { return layerIndex != ENTIRE_LEVEL; } + + static ImageIndex Make2D(GLint mipIndex); + static ImageIndex MakeCube(GLenum target, GLint mipIndex); + static ImageIndex Make2DArray(GLint mipIndex, GLint layerIndex); + static ImageIndex Make3D(GLint mipIndex, GLint layerIndex = ENTIRE_LEVEL); + static ImageIndex MakeGeneric(GLenum target, GLint mipIndex); + + static ImageIndex MakeInvalid(); + + static const GLint ENTIRE_LEVEL = static_cast<GLint>(-1); + + bool operator<(const ImageIndex &other) const; + + private: + friend class ImageIndexIterator; + + ImageIndex(GLenum typeIn, GLint mipIndexIn, GLint layerIndexIn); +}; + +class ImageIndexIterator +{ + public: + static ImageIndexIterator Make2D(GLint minMip, GLint maxMip); + static ImageIndexIterator MakeCube(GLint minMip, GLint maxMip); + static ImageIndexIterator Make3D(GLint minMip, GLint maxMip, GLint minLayer, GLint maxLayer); + static ImageIndexIterator Make2DArray(GLint minMip, GLint maxMip, const GLsizei *layerCounts); + + ImageIndex next(); + ImageIndex current() const; + bool hasNext() const; + + private: + + ImageIndexIterator(GLenum type, const rx::Range<GLint> &mipRange, + const rx::Range<GLint> &layerRange, const GLsizei *layerCounts); + + GLint maxLayer() const; + + GLenum mType; + rx::Range<GLint> mMipRange; + rx::Range<GLint> mLayerRange; + const GLsizei *mLayerCounts; + GLint mCurrentMip; + GLint mCurrentLayer; +}; + +} + +#endif // LIBANGLE_IMAGE_INDEX_H_ |