1 #ifndef _TCUSURFACE_HPP
2 #define _TCUSURFACE_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 RGBA8888 surface class.
24 *//*--------------------------------------------------------------------*/
25
26 #include "tcuDefs.hpp"
27 #include "tcuRGBA.hpp"
28 #include "tcuTexture.hpp"
29
30 #include "deArrayBuffer.hpp"
31
32 namespace tcu
33 {
34
35 /*--------------------------------------------------------------------*//*!
36 * \brief RGBA8888 surface
37 *
38 * Surface provides basic pixel storage functionality. Only single format
39 * (RGBA8888) is supported.
40 *
41 * PixelBufferAccess (see tcuTexture.h) provides much more flexible API
42 * for handling various pixel formats. This is mainly a convinience class.
43 *//*--------------------------------------------------------------------*/
44 class Surface
45 {
46 public:
47 Surface(void);
48 Surface(int width, int height);
49 ~Surface(void);
50
51 void setSize(int width, int height);
52
getWidth(void) const53 int getWidth(void) const
54 {
55 return m_width;
56 }
getHeight(void) const57 int getHeight(void) const
58 {
59 return m_height;
60 }
61
62 void setPixel(int x, int y, RGBA col);
63 RGBA getPixel(int x, int y) const;
64
65 ConstPixelBufferAccess getAccess(void) const;
66 PixelBufferAccess getAccess(void);
67
68 private:
69 // \note Copy constructor and assignment operators are public and auto-generated
70
71 int m_width;
72 int m_height;
73 de::ArrayBuffer<uint32_t> m_pixels;
74 } DE_WARN_UNUSED_TYPE;
75
setPixel(int x,int y,RGBA col)76 inline void Surface::setPixel(int x, int y, RGBA col)
77 {
78 DE_ASSERT(de::inBounds(x, 0, m_width) && de::inBounds(y, 0, m_height));
79
80 const int pixOffset = y * m_width + x;
81 uint32_t *pixAddr = m_pixels.getElementPtr(pixOffset);
82
83 #if (DE_ENDIANNESS == DE_LITTLE_ENDIAN)
84 *pixAddr = col.getPacked();
85 #else
86 *((uint8_t *)pixAddr + 0) = (uint8_t)col.getRed();
87 *((uint8_t *)pixAddr + 1) = (uint8_t)col.getGreen();
88 *((uint8_t *)pixAddr + 2) = (uint8_t)col.getBlue();
89 *((uint8_t *)pixAddr + 3) = (uint8_t)col.getAlpha();
90 #endif
91 }
92
getPixel(int x,int y) const93 inline RGBA Surface::getPixel(int x, int y) const
94 {
95 DE_ASSERT(de::inBounds(x, 0, m_width) && de::inBounds(y, 0, m_height));
96
97 const int pixOffset = y * m_width + x;
98 const uint32_t *pixAddr = m_pixels.getElementPtr(pixOffset);
99
100 DE_STATIC_ASSERT(RGBA::RED_SHIFT == 0 && RGBA::GREEN_SHIFT == 8 && RGBA::BLUE_SHIFT == 16 &&
101 RGBA::ALPHA_SHIFT == 24);
102
103 #if (DE_ENDIANNESS == DE_LITTLE_ENDIAN)
104 return RGBA(*pixAddr);
105 #else
106 const uint8_t *byteAddr = (const uint8_t *)pixAddr;
107 return RGBA(byteAddr[0], byteAddr[1], byteAddr[2], byteAddr[3]);
108 #endif
109 }
110
111 /** Get pixel buffer access from surface. */
getAccess(void) const112 inline ConstPixelBufferAccess Surface::getAccess(void) const
113 {
114 return ConstPixelBufferAccess(TextureFormat(TextureFormat::RGBA, TextureFormat::UNORM_INT8), m_width, m_height, 1,
115 m_pixels.empty() ? DE_NULL : m_pixels.getPtr());
116 }
117
118 /** Get pixel buffer access from surface. */
getAccess(void)119 inline PixelBufferAccess Surface::getAccess(void)
120 {
121 return PixelBufferAccess(TextureFormat(TextureFormat::RGBA, TextureFormat::UNORM_INT8), m_width, m_height, 1,
122 m_pixels.empty() ? DE_NULL : m_pixels.getPtr());
123 }
124
125 } // namespace tcu
126
127 #endif // _TCUSURFACE_HPP
128