tcuSurfaceAccess.hpp revision c4eb6f3271a0bcd54835e666e836e3e72beebbd2 
1#ifndef _TCUSURFACEACCESS_HPP
2#define _TCUSURFACEACCESS_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 Surface access class.
24 *//*--------------------------------------------------------------------*/
25
26#include "tcuDefs.hpp"
27#include "tcuTextureUtil.hpp"
28#include "tcuPixelFormat.hpp"
29#include "tcuSurface.hpp"
30
31namespace tcu
32{
33
34inline deUint8 getColorMask (const tcu::PixelFormat& format)
35{
36	return (deUint8)((format.redBits	? tcu::RGBA::RED_MASK	: 0) |
37					 (format.greenBits	? tcu::RGBA::GREEN_MASK	: 0) |
38					 (format.blueBits	? tcu::RGBA::BLUE_MASK	: 0) |
39					 (format.alphaBits	? tcu::RGBA::ALPHA_MASK	: 0));
40}
41
42inline tcu::RGBA toRGBAMasked (const tcu::Vec4& v, deUint8 mask)
43{
44	return tcu::RGBA((mask&tcu::RGBA::RED_MASK)		? tcu::floatToU8(v.x()) : 0,
45					 (mask&tcu::RGBA::GREEN_MASK)	? tcu::floatToU8(v.y()) : 0,
46					 (mask&tcu::RGBA::BLUE_MASK)	? tcu::floatToU8(v.z()) : 0,
47					 (mask&tcu::RGBA::ALPHA_MASK)	? tcu::floatToU8(v.w()) : 0xFF); //!< \note Alpha defaults to full saturation when reading masked format
48}
49
50class SurfaceAccess
51{
52public:
53							SurfaceAccess		(tcu::Surface& surface, const tcu::PixelFormat& colorFmt);
54							SurfaceAccess		(tcu::Surface& surface, const tcu::PixelFormat& colorFmt, int x, int y, int width, int height);
55							SurfaceAccess		(const SurfaceAccess& parent, int x, int y, int width, int height);
56
57	int						getWidth			(void) const	{ return m_width;	}
58	int						getHeight			(void) const	{ return m_height;	}
59
60	void					setPixel			(const tcu::Vec4& color, int x, int y) const;
61
62private:
63	mutable tcu::Surface*	m_surface;
64	deUint8					m_colorMask;
65	int						m_x;
66	int						m_y;
67	int						m_width;
68	int						m_height;
69};
70
71inline void SurfaceAccess::setPixel (const tcu::Vec4& color, int x, int y) const
72{
73	DE_ASSERT(de::inBounds(x, 0, m_width) && de::inBounds(y, 0, m_height));
74	m_surface->setPixel(m_x+x, m_y+y, toRGBAMasked(color, m_colorMask));
75}
76
77} // tcu
78
79#endif // _TCUSURFACEACCESS_HPP
80