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      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 
     29 namespace 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  *//*--------------------------------------------------------------------*/
     40 class MultisamplePixelBufferAccess
     41 {
     42 												MultisamplePixelBufferAccess	(const tcu::PixelBufferAccess& rawAccess);
     43 
     44 public:
     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 
     55 private:
     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  *//*--------------------------------------------------------------------*/
     67 class MultisampleConstPixelBufferAccess
     68 {
     69 												MultisampleConstPixelBufferAccess		(const tcu::ConstPixelBufferAccess& rawAccess);
     70 
     71 public:
     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 
     83 private:
     84 	tcu::ConstPixelBufferAccess					m_access;
     85 };
     86 
     87 // Multisampled versions of tcu-utils
     88 
     89 MultisamplePixelBufferAccess		getSubregion					(const MultisamplePixelBufferAccess& access, int x, int y, int width, int height);
     90 MultisampleConstPixelBufferAccess	getSubregion					(const MultisampleConstPixelBufferAccess& access, int x, int y, int width, int height);
     91 
     92 void								resolveMultisampleColorBuffer	(const tcu::PixelBufferAccess& dst, const MultisampleConstPixelBufferAccess& src);
     93 tcu::Vec4							resolveMultisamplePixel			(const MultisampleConstPixelBufferAccess& access, int x, int y);
     94 
     95 void								clear							(const MultisamplePixelBufferAccess& access, const tcu::Vec4& color);
     96 void								clear							(const MultisamplePixelBufferAccess& access, const tcu::IVec4& color);
     97 void								clearDepth						(const MultisamplePixelBufferAccess& access, float depth);
     98 void								clearStencil					(const MultisamplePixelBufferAccess& access, int stencil);
     99 
    100 } // rr
    101 
    102 #endif // _RRMULTISAMPLEPIXELBUFFERACCESS_HPP
    103