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
44 // sRGB - linear conversion.
45 Vec4 sRGBToLinear (const Vec4& cs);
46 Vec4 linearToSRGB (const Vec4& cl);
47 bool isSRGB (TextureFormat format);
48
49 /*--------------------------------------------------------------------*//*!
50 * \brief Color channel storage type
51 *//*--------------------------------------------------------------------*/
52 enum TextureChannelClass
53 {
54 TEXTURECHANNELCLASS_SIGNED_FIXED_POINT = 0,
55 TEXTURECHANNELCLASS_UNSIGNED_FIXED_POINT,
56 TEXTURECHANNELCLASS_SIGNED_INTEGER,
57 TEXTURECHANNELCLASS_UNSIGNED_INTEGER,
58 TEXTURECHANNELCLASS_FLOATING_POINT,
59
60 TEXTURECHANNELCLASS_LAST
61 };
62
63 TextureChannelClass getTextureChannelClass (TextureFormat::ChannelType channelType);
64
65 /*--------------------------------------------------------------------*//*!
66 * \brief Standard parameters for texture format testing
67 *//*--------------------------------------------------------------------*/
68 struct TextureFormatInfo
69 {
70 Vec4 valueMin;
71 Vec4 valueMax;
72 Vec4 lookupScale;
73 Vec4 lookupBias;
74
TextureFormatInfotcu::TextureFormatInfo75 TextureFormatInfo (const Vec4& valueMin_, const Vec4& valueMax_, const Vec4& lookupScale_, const Vec4& lookupBias_)
76 : valueMin (valueMin_)
77 , valueMax (valueMax_)
78 , lookupScale (lookupScale_)
79 , lookupBias (lookupBias_)
80 {
81 }
82 } DE_WARN_UNUSED_TYPE;
83
84 TextureFormatInfo getTextureFormatInfo (const TextureFormat& format);
85 IVec4 getTextureFormatBitDepth (const TextureFormat& format);
86 IVec4 getTextureFormatMantissaBitDepth (const TextureFormat& format);
87 BVec4 getTextureFormatChannelMask (const TextureFormat& format);
88
89 // Texture fill.
90 void clear (const PixelBufferAccess& access, const Vec4& color);
91 void clear (const PixelBufferAccess& access, const IVec4& color);
92 void clear (const PixelBufferAccess& access, const UVec4& color);
93 void clearDepth (const PixelBufferAccess& access, float depth);
94 void clearStencil (const PixelBufferAccess& access, int stencil);
95 void fillWithComponentGradients (const PixelBufferAccess& access, const Vec4& minVal, const Vec4& maxVal);
96 void fillWithGrid (const PixelBufferAccess& access, int cellSize, const Vec4& colorA, const Vec4& colorB);
97 void fillWithRepeatableGradient (const PixelBufferAccess& access, const Vec4& colorA, const Vec4& colorB);
98 void fillWithMetaballs (const PixelBufferAccess& access, int numMetaballs, deUint32 seed);
99 void fillWithRGBAQuads (const PixelBufferAccess& access);
100
101 //! Copies contents of src to dst. If formats of dst and src are equal, a bit-exact copy is made.
102 void copy (const PixelBufferAccess& dst, const ConstPixelBufferAccess& src);
103
104 void scale (const PixelBufferAccess& dst, const ConstPixelBufferAccess& src, Sampler::FilterMode filter);
105
106 void estimatePixelValueRange (const ConstPixelBufferAccess& access, Vec4& minVal, Vec4& maxVal);
107 void computePixelScaleBias (const ConstPixelBufferAccess& access, Vec4& scale, Vec4& bias);
108
109 int getCubeArrayFaceIndex (CubeFace face);
110
111 //! FP32->U8 with RTE rounding (extremely fast, always accurate).
floatToU8(float fv)112 inline deUint8 floatToU8 (float fv)
113 {
114 union { float fv; deUint32 uv; deInt32 iv; } v;
115 v.fv = fv;
116
117 const deUint32 e = (deUint32)(126-(v.iv>>23));
118 deUint32 m = v.uv;
119
120 m &= 0x00ffffffu;
121 m |= 0x00800000u;
122 m = (m << 8) - m;
123 m = 0x00800000u + (m >> e);
124
125 if (e > 8)
126 m = e;
127
128 return (deUint8)(m>>24);
129 }
130
131 deUint32 packRGB999E5 (const tcu::Vec4& color);
132
133 /*--------------------------------------------------------------------*//*!
134 * \brief Depth-stencil utilities
135 *//*--------------------------------------------------------------------*/
136
137 TextureFormat getEffectiveDepthStencilTextureFormat (const TextureFormat& baseFormat, Sampler::DepthStencilMode mode);
138
139 //! returns the currently effective access to an access with a given sampler mode, e.g.
140 //! for combined depth stencil accesses and for sampler set to sample stencil returns
141 //! stencil access. Identity for non-combined formats.
142 PixelBufferAccess getEffectiveDepthStencilAccess (const PixelBufferAccess& baseAccess, Sampler::DepthStencilMode mode);
143 ConstPixelBufferAccess getEffectiveDepthStencilAccess (const ConstPixelBufferAccess& baseAccess, Sampler::DepthStencilMode mode);
144
145 //! returns the currently effective view to an texture with a given sampler mode. Uses
146 //! storage for access storage storage
147
148 tcu::Texture1DView getEffectiveTextureView (const tcu::Texture1DView& src, std::vector<tcu::ConstPixelBufferAccess>& storage, const tcu::Sampler& sampler);
149 tcu::Texture2DView getEffectiveTextureView (const tcu::Texture2DView& src, std::vector<tcu::ConstPixelBufferAccess>& storage, const tcu::Sampler& sampler);
150 tcu::Texture3DView getEffectiveTextureView (const tcu::Texture3DView& src, std::vector<tcu::ConstPixelBufferAccess>& storage, const tcu::Sampler& sampler);
151 tcu::Texture1DArrayView getEffectiveTextureView (const tcu::Texture1DArrayView& src, std::vector<tcu::ConstPixelBufferAccess>& storage, const tcu::Sampler& sampler);
152 tcu::Texture2DArrayView getEffectiveTextureView (const tcu::Texture2DArrayView& src, std::vector<tcu::ConstPixelBufferAccess>& storage, const tcu::Sampler& sampler);
153 tcu::TextureCubeView getEffectiveTextureView (const tcu::TextureCubeView& src, std::vector<tcu::ConstPixelBufferAccess>& storage, const tcu::Sampler& sampler);
154 tcu::TextureCubeArrayView getEffectiveTextureView (const tcu::TextureCubeArrayView& src, std::vector<tcu::ConstPixelBufferAccess>& storage, const tcu::Sampler& sampler);
155
156 template <typename ScalarType>
157 tcu::Vector<ScalarType, 4> sampleTextureBorder (const TextureFormat& format, const Sampler& sampler);
158
159 } // tcu
160
161 #endif // _TCUTEXTUREUTIL_HPP
162