1#ifndef _RRMULTISAMPLEPIXELBUFFERACCESS_HPP
2#define _RRMULTISAMPLEPIXELBUFFERACCESS_HPP
3/*-------------------------------------------------------------------------
4 * drawElements Quality Program Reference Renderer
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 Multisampled pixel buffer access
24 *//*--------------------------------------------------------------------*/
25
26#include "rrDefs.hpp"
27#include "tcuTexture.hpp"
28
29namespace rr
30{
31
32/*--------------------------------------------------------------------*//*!
33 * \brief Read-write pixel data access to multisampled buffers.
34 *
35 * Multisampled data access follows the multisampled indexing convention.
36 *
37 * Prevents accidental usage of non-multisampled buffer as multisampled
38 * with PixelBufferAccess.
39 *//*--------------------------------------------------------------------*/
40class MultisamplePixelBufferAccess
41{
42												MultisamplePixelBufferAccess	(const tcu::PixelBufferAccess& rawAccess);
43
44public:
45												MultisamplePixelBufferAccess	(void);
46
47	inline const tcu::PixelBufferAccess&		raw								(void) const { return m_access; }
48	inline int									getNumSamples					(void) const { return raw().getWidth(); }
49
50	const tcu::PixelBufferAccess				toSinglesampleAccess			(void) const;
51
52	static MultisamplePixelBufferAccess			fromSinglesampleAccess			(const tcu::PixelBufferAccess& singlesampledAccess);
53	static MultisamplePixelBufferAccess			fromMultisampleAccess			(const tcu::PixelBufferAccess& multisampledAccess);
54
55private:
56	tcu::PixelBufferAccess						m_access;
57};
58
59/*--------------------------------------------------------------------*//*!
60 * \brief Read-only pixel data access to multisampled buffers.
61 *
62 * Multisampled data access follows the multisampled indexing convention.
63 *
64 * Prevents accidental usage of non-multisampled buffer as multisampled
65 * with PixelBufferAccess.
66 *//*--------------------------------------------------------------------*/
67class MultisampleConstPixelBufferAccess
68{
69												MultisampleConstPixelBufferAccess		(const tcu::ConstPixelBufferAccess& rawAccess);
70
71public:
72												MultisampleConstPixelBufferAccess		(const rr::MultisamplePixelBufferAccess& msAccess);
73												MultisampleConstPixelBufferAccess		(void);
74
75	inline const tcu::ConstPixelBufferAccess&	raw										(void) const { return m_access; }
76	inline int									getNumSamples							(void) const { return raw().getWidth(); }
77
78	const tcu::ConstPixelBufferAccess			toSinglesampleAccess					(void) const;
79
80	static MultisampleConstPixelBufferAccess	fromSinglesampleAccess					(const tcu::ConstPixelBufferAccess& singlesampledAccess);
81	static MultisampleConstPixelBufferAccess	fromMultisampleAccess					(const tcu::ConstPixelBufferAccess& multisampledAccess);
82
83private:
84	tcu::ConstPixelBufferAccess					m_access;
85};
86
87// Multisampled versions of tcu-utils
88
89MultisamplePixelBufferAccess		getSubregion					(const MultisamplePixelBufferAccess& access, int x, int y, int width, int height);
90MultisampleConstPixelBufferAccess	getSubregion					(const MultisampleConstPixelBufferAccess& access, int x, int y, int width, int height);
91
92void								resolveMultisampleColorBuffer	(const tcu::PixelBufferAccess& dst, const MultisampleConstPixelBufferAccess& src);
93tcu::Vec4							resolveMultisamplePixel			(const MultisampleConstPixelBufferAccess& access, int x, int y);
94
95void								clear							(const MultisamplePixelBufferAccess& access, const tcu::Vec4& color);
96void								clear							(const MultisamplePixelBufferAccess& access, const tcu::IVec4& color);
97void								clearDepth						(const MultisamplePixelBufferAccess& access, float depth);
98void								clearStencil					(const MultisamplePixelBufferAccess& access, int stencil);
99
100} // rr
101
102#endif // _RRMULTISAMPLEPIXELBUFFERACCESS_HPP
103