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1 #ifndef _TCUTEXCOMPAREVERIFIER_HPP
2 #define _TCUTEXCOMPAREVERIFIER_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 compare (shadow) result verifier.
24  *//*--------------------------------------------------------------------*/
25 
26 #include "tcuDefs.hpp"
27 #include "tcuTexture.hpp"
28 #include "tcuTexLookupVerifier.hpp"
29 
30 namespace tcu
31 {
32 
33 /*--------------------------------------------------------------------*//*!
34  * \brief Texture compare (shadow) lookup precision parameters.
35  * \see LookupPrecision
36  *//*--------------------------------------------------------------------*/
37 struct TexComparePrecision
38 {
39 	IVec3		coordBits;		//!< Bits per coordinate component before any transformations. Assumed to be floating-point.
40 	IVec3		uvwBits;		//!< Bits per component in final per-level UV(W) coordinates. Assumed to be fixed-point.
41 	int			pcfBits;		//!< Number of accurate bits in PCF. This is additional error taken into account when doing filtering. Assumed to be fixed-point.
42 	int			referenceBits;	//!< Number of accurate bits in compare reference value. Assumed to be fixed-point.
43 	int			resultBits;		//!< Number of accurate bits in result value. Assumed to be fixed-point.
44 
TexComparePrecisiontcu::TexComparePrecision45 	TexComparePrecision (void)
46 		: coordBits		(22)
47 		, uvwBits		(16)
48 		, pcfBits		(16)
49 		, referenceBits	(16)
50 		, resultBits	(16)
51 	{
52 	}
53 } DE_WARN_UNUSED_TYPE;
54 
55 bool		isTexCompareResultValid				(const Texture2DView&			texture, const Sampler& sampler, const TexComparePrecision& prec, const Vec2& coord, const Vec2& lodBounds, const float cmpReference, const float result);
56 bool		isTexCompareResultValid				(const TextureCubeView&			texture, const Sampler& sampler, const TexComparePrecision& prec, const Vec3& coord, const Vec2& lodBounds, const float cmpReference, const float result);
57 bool		isTexCompareResultValid				(const Texture2DArrayView&		texture, const Sampler& sampler, const TexComparePrecision& prec, const Vec3& coord, const Vec2& lodBounds, const float cmpReference, const float result);
58 bool		isTexCompareResultValid				(const Texture1DView&			texture, const Sampler& sampler, const TexComparePrecision& prec, const Vec1& coord, const Vec2& lodBounds, const float cmpReference, const float result);
59 bool		isTexCompareResultValid				(const Texture1DArrayView&		texture, const Sampler& sampler, const TexComparePrecision& prec, const Vec2& coord, const Vec2& lodBounds, const float cmpReference, const float result);
60 bool		isTexCompareResultValid				(const TextureCubeArrayView&	texture, const Sampler& sampler, const TexComparePrecision& prec, const Vec4& coord, const Vec2& lodBounds, const float cmpReference, const float result);
61 
62 bool		isGatherOffsetsCompareResultValid	(const Texture2DView&		texture, const Sampler& sampler, const TexComparePrecision& prec, const Vec2& coord, const IVec2 (&offsets)[4], float cmpReference, const Vec4& result);
63 bool		isGatherOffsetsCompareResultValid	(const Texture2DArrayView&	texture, const Sampler& sampler, const TexComparePrecision& prec, const Vec3& coord, const IVec2 (&offsets)[4], float cmpReference, const Vec4& result);
64 // \note For cube textures, gather is only defined without offset.
65 bool		isGatherCompareResultValid			(const TextureCubeView&		texture, const Sampler& sampler, const TexComparePrecision& prec, const Vec3& coord, float cmpReference, const Vec4& result);
66 
67 } // tcu
68 
69 #endif // _TCUTEXCOMPAREVERIFIER_HPP
70