1 #ifndef _TCUTEXTUREUTIL_HPP
2 #define _TCUTEXTUREUTIL_HPP
3 /*-------------------------------------------------------------------------
4 * drawElements Quality Program Tester Core
5 * ----------------------------------------
6 *
7 * Copyright 2014 The Android Open Source Project
8 *
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
12 *
13 * http://www.apache.org/licenses/LICENSE-2.0
14 *
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 *
21 *//*!
22 * \file
23 * \brief Texture utilities.
24 *//*--------------------------------------------------------------------*/
25
26 #include "tcuDefs.hpp"
27 #include "tcuTexture.hpp"
28
29 namespace tcu
30 {
31
32 // PixelBufferAccess utilities.
33 PixelBufferAccess getSubregion (const PixelBufferAccess& access, int x, int y, int z, int width, int height, int depth);
34 ConstPixelBufferAccess getSubregion (const ConstPixelBufferAccess& access, int x, int y, int z, int width, int height, int depth);
35
36 PixelBufferAccess getSubregion (const PixelBufferAccess& access, int x, int y, int width, int height);
37 ConstPixelBufferAccess getSubregion (const ConstPixelBufferAccess& access, int x, int y, int width, int height);
38
39 PixelBufferAccess flipYAccess (const PixelBufferAccess& access);
40 ConstPixelBufferAccess flipYAccess (const ConstPixelBufferAccess& access);
41
42 bool isCombinedDepthStencilType (TextureFormat::ChannelType type);
43 bool hasStencilComponent (TextureFormat::ChannelOrder order);
44 bool hasDepthComponent (TextureFormat::ChannelOrder order);
45
46 // sRGB - linear conversion.
47 Vec4 sRGBToLinear (const Vec4& cs);
48 Vec4 sRGB8ToLinear (const UVec4& cs);
49 Vec4 sRGBA8ToLinear (const UVec4& cs);
50 Vec4 linearToSRGB (const Vec4& cl);
51 bool isSRGB (TextureFormat format);
52
53 /*--------------------------------------------------------------------*//*!
54 * \brief Color channel storage type
55 *//*--------------------------------------------------------------------*/
56 enum TextureChannelClass
57 {
58 TEXTURECHANNELCLASS_SIGNED_FIXED_POINT = 0,
59 TEXTURECHANNELCLASS_UNSIGNED_FIXED_POINT,
60 TEXTURECHANNELCLASS_SIGNED_INTEGER,
61 TEXTURECHANNELCLASS_UNSIGNED_INTEGER,
62 TEXTURECHANNELCLASS_FLOATING_POINT,
63
64 TEXTURECHANNELCLASS_LAST
65 };
66
67 TextureChannelClass getTextureChannelClass (TextureFormat::ChannelType channelType);
68
69 /*--------------------------------------------------------------------*//*!
70 * \brief Texture access type
71 *//*--------------------------------------------------------------------*/
72 enum TextureAccessType
73 {
74 TEXTUREACCESSTYPE_FLOAT = 0, //!< Read (getPixel) or write as floating-point data
75 TEXTUREACCESSTYPE_SIGNED_INT, //!< Read (getPixelInt) or write as signed integer data
76 TEXTUREACCESSTYPE_UNSIGNED_INT, //!< Read (getPixelUint) or write as unsigned integer data
77
78 TEXTUREACCESSTYPE_LAST
79 };
80
81 bool isAccessValid (TextureFormat format, TextureAccessType type);
82
83 /*--------------------------------------------------------------------*//*!
84 * \brief Standard parameters for texture format testing
85 *//*--------------------------------------------------------------------*/
86 struct TextureFormatInfo
87 {
88 Vec4 valueMin;
89 Vec4 valueMax;
90 Vec4 lookupScale;
91 Vec4 lookupBias;
92
TextureFormatInfotcu::TextureFormatInfo93 TextureFormatInfo (const Vec4& valueMin_, const Vec4& valueMax_, const Vec4& lookupScale_, const Vec4& lookupBias_)
94 : valueMin (valueMin_)
95 , valueMax (valueMax_)
96 , lookupScale (lookupScale_)
97 , lookupBias (lookupBias_)
98 {
99 }
100 } DE_WARN_UNUSED_TYPE;
101
102 TextureFormatInfo getTextureFormatInfo (const TextureFormat& format);
103 IVec4 getTextureFormatBitDepth (const TextureFormat& format);
104 IVec4 getTextureFormatMantissaBitDepth (const TextureFormat& format);
105 BVec4 getTextureFormatChannelMask (const TextureFormat& format);
106
107 IVec4 getFormatMinIntValue (const TextureFormat& format);
108 IVec4 getFormatMaxIntValue (const TextureFormat& format);
109
110 UVec4 getFormatMaxUintValue (const TextureFormat& format);
111
112 // Texture fill.
113 void clear (const PixelBufferAccess& access, const Vec4& color);
114 void clear (const PixelBufferAccess& access, const IVec4& color);
115 void clear (const PixelBufferAccess& access, const UVec4& color);
116 void clearDepth (const PixelBufferAccess& access, float depth);
117 void clearStencil (const PixelBufferAccess& access, int stencil);
118 void fillWithComponentGradients (const PixelBufferAccess& access, const Vec4& minVal, const Vec4& maxVal);
119 void fillWithGrid (const PixelBufferAccess& access, int cellSize, const Vec4& colorA, const Vec4& colorB);
120 void fillWithRepeatableGradient (const PixelBufferAccess& access, const Vec4& colorA, const Vec4& colorB);
121 void fillWithMetaballs (const PixelBufferAccess& access, int numMetaballs, deUint32 seed);
122 void fillWithRGBAQuads (const PixelBufferAccess& access);
123
124 //! Copies contents of src to dst. If formats of dst and src are equal, a bit-exact copy is made.
125 void copy (const PixelBufferAccess& dst, const ConstPixelBufferAccess& src);
126
127 void scale (const PixelBufferAccess& dst, const ConstPixelBufferAccess& src, Sampler::FilterMode filter);
128
129 void estimatePixelValueRange (const ConstPixelBufferAccess& access, Vec4& minVal, Vec4& maxVal);
130 void computePixelScaleBias (const ConstPixelBufferAccess& access, Vec4& scale, Vec4& bias);
131
132 int getCubeArrayFaceIndex (CubeFace face);
133
134 //! FP32->U8 with RTE rounding (extremely fast, always accurate).
floatToU8(float fv)135 inline deUint8 floatToU8 (float fv)
136 {
137 union { float fv; deUint32 uv; deInt32 iv; } v;
138 v.fv = fv;
139
140 const deUint32 e = (deUint32)(126-(v.iv>>23));
141 deUint32 m = v.uv;
142
143 m &= 0x00ffffffu;
144 m |= 0x00800000u;
145 m = (m << 8) - m;
146 m = 0x00800000u + (m >> e);
147
148 if (e > 8)
149 m = e;
150
151 return (deUint8)(m>>24);
152 }
153
154 deUint32 packRGB999E5 (const tcu::Vec4& color);
155
156 /*--------------------------------------------------------------------*//*!
157 * \brief Depth-stencil utilities
158 *//*--------------------------------------------------------------------*/
159
160 TextureFormat getEffectiveDepthStencilTextureFormat (const TextureFormat& baseFormat, Sampler::DepthStencilMode mode);
161
162 //! returns the currently effective access to an access with a given sampler mode, e.g.
163 //! for combined depth stencil accesses and for sampler set to sample stencil returns
164 //! stencil access. Identity for non-combined formats.
165 PixelBufferAccess getEffectiveDepthStencilAccess (const PixelBufferAccess& baseAccess, Sampler::DepthStencilMode mode);
166 ConstPixelBufferAccess getEffectiveDepthStencilAccess (const ConstPixelBufferAccess& baseAccess, Sampler::DepthStencilMode mode);
167
168 //! returns the currently effective view to an texture with a given sampler mode. Uses
169 //! storage for access storage storage
170
171 tcu::Texture1DView getEffectiveTextureView (const tcu::Texture1DView& src, std::vector<tcu::ConstPixelBufferAccess>& storage, const tcu::Sampler& sampler);
172 tcu::Texture2DView getEffectiveTextureView (const tcu::Texture2DView& src, std::vector<tcu::ConstPixelBufferAccess>& storage, const tcu::Sampler& sampler);
173 tcu::Texture3DView getEffectiveTextureView (const tcu::Texture3DView& src, std::vector<tcu::ConstPixelBufferAccess>& storage, const tcu::Sampler& sampler);
174 tcu::Texture1DArrayView getEffectiveTextureView (const tcu::Texture1DArrayView& src, std::vector<tcu::ConstPixelBufferAccess>& storage, const tcu::Sampler& sampler);
175 tcu::Texture2DArrayView getEffectiveTextureView (const tcu::Texture2DArrayView& src, std::vector<tcu::ConstPixelBufferAccess>& storage, const tcu::Sampler& sampler);
176 tcu::TextureCubeView getEffectiveTextureView (const tcu::TextureCubeView& src, std::vector<tcu::ConstPixelBufferAccess>& storage, const tcu::Sampler& sampler);
177 tcu::TextureCubeArrayView getEffectiveTextureView (const tcu::TextureCubeArrayView& src, std::vector<tcu::ConstPixelBufferAccess>& storage, const tcu::Sampler& sampler);
178
179 template <typename ScalarType>
180 tcu::Vector<ScalarType, 4> sampleTextureBorder (const TextureFormat& format, const Sampler& sampler);
181
182 } // tcu
183
184 #endif // _TCUTEXTUREUTIL_HPP
185