#ifndef _TCUTEXTUREUTIL_HPP
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#define _TCUTEXTUREUTIL_HPP
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/*-------------------------------------------------------------------------
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* drawElements Quality Program Tester Core
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* ----------------------------------------
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*
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* Copyright 2014 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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*//*!
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* \file
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* \brief Texture utilities.
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*//*--------------------------------------------------------------------*/
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#include "tcuDefs.hpp"
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#include "tcuTexture.hpp"
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namespace tcu
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{
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// PixelBufferAccess utilities.
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PixelBufferAccess getSubregion (const PixelBufferAccess& access, int x, int y, int z, int width, int height, int depth);
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ConstPixelBufferAccess getSubregion (const ConstPixelBufferAccess& access, int x, int y, int z, int width, int height, int depth);
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PixelBufferAccess getSubregion (const PixelBufferAccess& access, int x, int y, int width, int height);
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ConstPixelBufferAccess getSubregion (const ConstPixelBufferAccess& access, int x, int y, int width, int height);
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PixelBufferAccess flipYAccess (const PixelBufferAccess& access);
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ConstPixelBufferAccess flipYAccess (const ConstPixelBufferAccess& access);
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bool isCombinedDepthStencilType (TextureFormat::ChannelType type);
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bool hasStencilComponent (TextureFormat::ChannelOrder order);
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bool hasDepthComponent (TextureFormat::ChannelOrder order);
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// sRGB - linear conversion.
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Vec4 sRGBToLinear (const Vec4& cs);
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Vec4 sRGB8ToLinear (const UVec4& cs);
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Vec4 sRGBA8ToLinear (const UVec4& cs);
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Vec4 linearToSRGB (const Vec4& cl);
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bool isSRGB (TextureFormat format);
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/*--------------------------------------------------------------------*//*!
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* \brief Color channel storage type
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*//*--------------------------------------------------------------------*/
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enum TextureChannelClass
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{
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TEXTURECHANNELCLASS_SIGNED_FIXED_POINT = 0,
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TEXTURECHANNELCLASS_UNSIGNED_FIXED_POINT,
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TEXTURECHANNELCLASS_SIGNED_INTEGER,
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TEXTURECHANNELCLASS_UNSIGNED_INTEGER,
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TEXTURECHANNELCLASS_FLOATING_POINT,
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TEXTURECHANNELCLASS_LAST
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};
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TextureChannelClass getTextureChannelClass (TextureFormat::ChannelType channelType);
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/*--------------------------------------------------------------------*//*!
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* \brief Texture access type
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*//*--------------------------------------------------------------------*/
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enum TextureAccessType
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{
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TEXTUREACCESSTYPE_FLOAT = 0, //!< Read (getPixel) or write as floating-point data
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TEXTUREACCESSTYPE_SIGNED_INT, //!< Read (getPixelInt) or write as signed integer data
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TEXTUREACCESSTYPE_UNSIGNED_INT, //!< Read (getPixelUint) or write as unsigned integer data
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TEXTUREACCESSTYPE_LAST
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};
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bool isAccessValid (TextureFormat format, TextureAccessType type);
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/*--------------------------------------------------------------------*//*!
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* \brief Standard parameters for texture format testing
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*//*--------------------------------------------------------------------*/
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struct TextureFormatInfo
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{
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Vec4 valueMin;
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Vec4 valueMax;
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Vec4 lookupScale;
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Vec4 lookupBias;
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TextureFormatInfo (const Vec4& valueMin_, const Vec4& valueMax_, const Vec4& lookupScale_, const Vec4& lookupBias_)
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: valueMin (valueMin_)
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, valueMax (valueMax_)
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, lookupScale (lookupScale_)
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, lookupBias (lookupBias_)
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{
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}
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} DE_WARN_UNUSED_TYPE;
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TextureFormatInfo getTextureFormatInfo (const TextureFormat& format);
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IVec4 getTextureFormatBitDepth (const TextureFormat& format);
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IVec4 getTextureFormatMantissaBitDepth (const TextureFormat& format);
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BVec4 getTextureFormatChannelMask (const TextureFormat& format);
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IVec4 getFormatMinIntValue (const TextureFormat& format);
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IVec4 getFormatMaxIntValue (const TextureFormat& format);
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UVec4 getFormatMaxUintValue (const TextureFormat& format);
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// Texture fill.
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void clear (const PixelBufferAccess& access, const Vec4& color);
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void clear (const PixelBufferAccess& access, const IVec4& color);
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void clear (const PixelBufferAccess& access, const UVec4& color);
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void clearDepth (const PixelBufferAccess& access, float depth);
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void clearStencil (const PixelBufferAccess& access, int stencil);
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void fillWithComponentGradients (const PixelBufferAccess& access, const Vec4& minVal, const Vec4& maxVal);
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void fillWithGrid (const PixelBufferAccess& access, int cellSize, const Vec4& colorA, const Vec4& colorB);
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void fillWithRepeatableGradient (const PixelBufferAccess& access, const Vec4& colorA, const Vec4& colorB);
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void fillWithMetaballs (const PixelBufferAccess& access, int numMetaballs, deUint32 seed);
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void fillWithRGBAQuads (const PixelBufferAccess& access);
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//! Copies contents of src to dst. If formats of dst and src are equal, a bit-exact copy is made.
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void copy (const PixelBufferAccess& dst, const ConstPixelBufferAccess& src);
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void scale (const PixelBufferAccess& dst, const ConstPixelBufferAccess& src, Sampler::FilterMode filter);
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void estimatePixelValueRange (const ConstPixelBufferAccess& access, Vec4& minVal, Vec4& maxVal);
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void computePixelScaleBias (const ConstPixelBufferAccess& access, Vec4& scale, Vec4& bias);
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int getCubeArrayFaceIndex (CubeFace face);
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//! FP32->U8 with RTE rounding (extremely fast, always accurate).
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inline deUint8 floatToU8 (float fv)
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{
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union { float fv; deUint32 uv; deInt32 iv; } v;
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v.fv = fv;
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const deUint32 e = (deUint32)(126-(v.iv>>23));
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deUint32 m = v.uv;
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m &= 0x00ffffffu;
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m |= 0x00800000u;
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m = (m << 8) - m;
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m = 0x00800000u + (m >> e);
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if (e > 8)
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m = e;
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return (deUint8)(m>>24);
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}
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deUint32 packRGB999E5 (const tcu::Vec4& color);
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/*--------------------------------------------------------------------*//*!
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* \brief Depth-stencil utilities
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*//*--------------------------------------------------------------------*/
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TextureFormat getEffectiveDepthStencilTextureFormat (const TextureFormat& baseFormat, Sampler::DepthStencilMode mode);
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//! returns the currently effective access to an access with a given sampler mode, e.g.
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//! for combined depth stencil accesses and for sampler set to sample stencil returns
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//! stencil access. Identity for non-combined formats.
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PixelBufferAccess getEffectiveDepthStencilAccess (const PixelBufferAccess& baseAccess, Sampler::DepthStencilMode mode);
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ConstPixelBufferAccess getEffectiveDepthStencilAccess (const ConstPixelBufferAccess& baseAccess, Sampler::DepthStencilMode mode);
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//! returns the currently effective view to an texture with a given sampler mode. Uses
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//! storage for access storage storage
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tcu::Texture1DView getEffectiveTextureView (const tcu::Texture1DView& src, std::vector<tcu::ConstPixelBufferAccess>& storage, const tcu::Sampler& sampler);
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tcu::Texture2DView getEffectiveTextureView (const tcu::Texture2DView& src, std::vector<tcu::ConstPixelBufferAccess>& storage, const tcu::Sampler& sampler);
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tcu::Texture3DView getEffectiveTextureView (const tcu::Texture3DView& src, std::vector<tcu::ConstPixelBufferAccess>& storage, const tcu::Sampler& sampler);
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tcu::Texture1DArrayView getEffectiveTextureView (const tcu::Texture1DArrayView& src, std::vector<tcu::ConstPixelBufferAccess>& storage, const tcu::Sampler& sampler);
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tcu::Texture2DArrayView getEffectiveTextureView (const tcu::Texture2DArrayView& src, std::vector<tcu::ConstPixelBufferAccess>& storage, const tcu::Sampler& sampler);
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tcu::TextureCubeView getEffectiveTextureView (const tcu::TextureCubeView& src, std::vector<tcu::ConstPixelBufferAccess>& storage, const tcu::Sampler& sampler);
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tcu::TextureCubeArrayView getEffectiveTextureView (const tcu::TextureCubeArrayView& src, std::vector<tcu::ConstPixelBufferAccess>& storage, const tcu::Sampler& sampler);
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template <typename ScalarType>
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tcu::Vector<ScalarType, 4> sampleTextureBorder (const TextureFormat& format, const Sampler& sampler);
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} // tcu
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#endif // _TCUTEXTUREUTIL_HPP
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