source: OGRE/trunk/ogrenew/Tests/OgreMain/src/PixelFormatTests.cpp @ 657

Revision 657, 7.5 KB checked in by mattausch, 19 years ago (diff)

added ogre dependencies and patched ogre sources
Line 
1/*
2-----------------------------------------------------------------------------
3This source file is part of OGRE
4    (Object-oriented Graphics Rendering Engine)
5For the latest info, see http://www.ogre3d.org/
6
7Copyright (c) 2000-2005 The OGRE Team
8Also see acknowledgements in Readme.html
9
10This program is free software; you can redistribute it and/or modify it under
11the terms of the GNU Lesser General Public License as published by the Free Software
12Foundation; either version 2 of the License, or (at your option) any later
13version.
14
15This program is distributed in the hope that it will be useful, but WITHOUT
16ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
18
19You should have received a copy of the GNU Lesser General Public License along with
20this program; if not, write to the Free Software Foundation, Inc., 59 Temple
21Place - Suite 330, Boston, MA 02111-1307, USA, or go to
22http://www.gnu.org/copyleft/lesser.txt.
23-----------------------------------------------------------------------------
24*/
25#include "PixelFormatTests.h"
26#include "OgrePixelFormat.h"
27#include <cstdlib>
28// Register the suite
29CPPUNIT_TEST_SUITE_REGISTRATION( PixelFormatTests );
30
31void PixelFormatTests::setUp()
32{
33    size = 4096;
34    randomData = new uint8[size];
35    temp = new uint8[size];
36    temp2 = new uint8[size];
37    // Generate reproducable random data
38    srand(0);
39    for(unsigned int x=0; x<size; x++)
40        randomData[x] = (uint8)rand();
41}
42
43void PixelFormatTests::tearDown()
44{
45    delete [] randomData;
46    delete [] temp;
47    delete [] temp2;
48}
49
50
51void PixelFormatTests::testIntegerPackUnpack()
52{
53   
54}
55
56void PixelFormatTests::testFloatPackUnpack()
57{
58    // Float32
59    float data[4] = {1.0f, 2.0f, 3.0f, 4.0f};
60    float r,g,b,a;
61    PixelUtil::unpackColour(&r, &g, &b, &a, PF_FLOAT32_RGBA, data);
62    CPPUNIT_ASSERT_EQUAL(r, 1.0f);
63    CPPUNIT_ASSERT_EQUAL(g, 2.0f);
64    CPPUNIT_ASSERT_EQUAL(b, 3.0f);
65    CPPUNIT_ASSERT_EQUAL(a, 4.0f);
66   
67    // Float16
68    setupBoxes(PF_A8B8G8R8, PF_FLOAT16_RGBA);
69    dst2.format = PF_A8B8G8R8;
70    unsigned int eob = src.getWidth()*4;
71   
72    PixelUtil::bulkPixelConversion(src, dst1);
73    PixelUtil::bulkPixelConversion(dst1, dst2);
74   
75    // Locate errors
76    std::stringstream s;
77    int x;
78    for(x=0; x<eob; x++) {
79        if(temp2[x] != randomData[x])
80            s << std::hex << std::setw(2) << std::setfill('0') << (unsigned int) randomData[x]
81              << "!= " << std::hex << std::setw(2) << std::setfill('0') << (unsigned int) temp2[x] << " ";
82    }
83
84    // src and dst2 should match   
85    CPPUNIT_ASSERT_MESSAGE("PF_FLOAT16_RGBA<->PF_A8B8G8R8 conversion was not lossless "+s.str(),
86        memcmp(src.data, dst2.data, eob) == 0);
87}
88
89// Pure 32 bit float precision brute force pixel conversion; for comparision
90void naiveBulkPixelConversion(const PixelBox &src, const PixelBox &dst)
91{
92    uint8 *srcptr = static_cast<uint8*>(src.data);
93    uint8 *dstptr = static_cast<uint8*>(dst.data);
94    unsigned int srcPixelSize = PixelUtil::getNumElemBytes(src.format);
95    unsigned int dstPixelSize = PixelUtil::getNumElemBytes(dst.format);
96
97    // Calculate pitches+skips in bytes
98    int srcRowSkipBytes = src.getRowSkip()*srcPixelSize;
99    int srcSliceSkipBytes = src.getSliceSkip()*srcPixelSize;
100
101    int dstRowSkipBytes = dst.getRowSkip()*dstPixelSize;
102    int dstSliceSkipBytes = dst.getSliceSkip()*dstPixelSize;
103       
104        // The brute force fallback
105        float r,g,b,a;
106        for(size_t z=src.front; z<src.back; z++)
107        {
108                for(size_t y=src.top; y<src.bottom; y++)
109                {
110                        for(size_t x=src.left; x<src.right; x++)
111                        {
112                                PixelUtil::unpackColour(&r, &g, &b, &a, src.format, srcptr);
113                                PixelUtil::packColour(r, g, b, a, dst.format, dstptr);
114                                srcptr += srcPixelSize;
115                                dstptr += dstPixelSize;
116                        }
117                        srcptr += srcRowSkipBytes;
118                        dstptr += dstRowSkipBytes;
119                }
120                srcptr += srcSliceSkipBytes;
121                dstptr += dstSliceSkipBytes;
122        }
123       
124}
125
126void PixelFormatTests::setupBoxes(PixelFormat srcFormat, PixelFormat dstFormat)
127{
128    unsigned int width = (size-4) / PixelUtil::getNumElemBytes(srcFormat);
129    unsigned int width2 = (size-4) / PixelUtil::getNumElemBytes(dstFormat);
130    if(width > width2)
131        width = width2;
132
133    src = PixelBox(width, 1, 1, srcFormat, randomData);
134        dst1 = PixelBox(width, 1, 1, dstFormat, temp);
135        dst2 = PixelBox(width, 1, 1, dstFormat, temp2);
136
137}
138
139void PixelFormatTests::testCase(PixelFormat srcFormat, PixelFormat dstFormat)
140{
141    setupBoxes(srcFormat, dstFormat);
142    // Check end of buffer
143    unsigned int eob = dst1.getWidth()*PixelUtil::getNumElemBytes(dstFormat);
144    temp[eob] = (unsigned char)0x56;
145    temp[eob+1] = (unsigned char)0x23;
146
147    //std::cerr << "["+PixelUtil::getFormatName(srcFormat)+"->"+PixelUtil::getFormatName(dstFormat)+"]" << " " << eob << std::endl;
148
149    // Do pack/unpacking with both naive and optimized version
150    PixelUtil::bulkPixelConversion(src, dst1);
151    naiveBulkPixelConversion(src, dst2);
152   
153    CPPUNIT_ASSERT_EQUAL(temp[eob], (unsigned char)0x56);
154    CPPUNIT_ASSERT_EQUAL(temp[eob+1], (unsigned char)0x23);
155
156    std::stringstream s;
157    int x;
158    s << "src=";
159    for(x=0; x<16; x++)
160        s << std::hex << std::setw(2) << std::setfill('0') << (unsigned int) randomData[x];
161    s << " dst=";
162    for(x=0; x<16; x++)
163        s << std::hex << std::setw(2) << std::setfill('0') << (unsigned int) temp[x];
164    s << " dstRef=";
165    for(x=0; x<16; x++)
166        s << std::hex << std::setw(2) << std::setfill('0') << (unsigned int) temp2[x];
167    s << " ";
168   
169    // Compare result
170    CPPUNIT_ASSERT_MESSAGE("Conversion mismatch ["+PixelUtil::getFormatName(srcFormat)+"->"+PixelUtil::getFormatName(dstFormat)+"] "+s.str(),
171        memcmp(dst1.data, dst2.data, eob) == 0);
172}
173 
174void PixelFormatTests::testBulkConversion()
175{
176    // Self match
177    testCase(PF_A8R8G8B8, PF_A8R8G8B8);
178    // Optimized
179        testCase(PF_A8R8G8B8,PF_A8B8G8R8);
180        testCase(PF_A8R8G8B8,PF_B8G8R8A8);
181        testCase(PF_A8R8G8B8,PF_R8G8B8A8);
182        testCase(PF_A8B8G8R8,PF_A8R8G8B8);
183        testCase(PF_A8B8G8R8,PF_B8G8R8A8);
184        testCase(PF_A8B8G8R8,PF_R8G8B8A8);
185        testCase(PF_B8G8R8A8,PF_A8R8G8B8);
186        testCase(PF_B8G8R8A8,PF_A8B8G8R8);
187        testCase(PF_B8G8R8A8,PF_R8G8B8A8);
188        testCase(PF_R8G8B8A8,PF_A8R8G8B8);
189        testCase(PF_R8G8B8A8,PF_A8B8G8R8);
190        testCase(PF_R8G8B8A8,PF_B8G8R8A8);
191       
192    testCase(PF_A8B8G8R8, PF_L8);
193    testCase(PF_L8, PF_A8B8G8R8);
194    testCase(PF_A8R8G8B8, PF_L8);
195    testCase(PF_L8, PF_A8R8G8B8);
196    testCase(PF_B8G8R8A8, PF_L8);
197    testCase(PF_L8, PF_B8G8R8A8);
198    testCase(PF_L8, PF_L16);
199    testCase(PF_L16, PF_L8);
200    testCase(PF_R8G8B8, PF_B8G8R8);
201    testCase(PF_B8G8R8, PF_R8G8B8);
202    testCase(PF_B8G8R8, PF_R8G8B8);
203    testCase(PF_R8G8B8, PF_B8G8R8);
204    testCase(PF_R8G8B8, PF_A8R8G8B8);
205    testCase(PF_B8G8R8, PF_A8R8G8B8);
206    testCase(PF_R8G8B8, PF_A8B8G8R8);
207    testCase(PF_B8G8R8, PF_A8B8G8R8);
208    testCase(PF_R8G8B8, PF_B8G8R8A8);
209    testCase(PF_B8G8R8, PF_B8G8R8A8);
210        testCase(PF_A8R8G8B8, PF_R8G8B8);
211        testCase(PF_A8R8G8B8, PF_B8G8R8);
212        testCase(PF_X8R8G8B8, PF_A8R8G8B8);
213        testCase(PF_X8R8G8B8, PF_A8B8G8R8);
214        testCase(PF_X8R8G8B8, PF_B8G8R8A8);
215        testCase(PF_X8R8G8B8, PF_R8G8B8A8);
216        testCase(PF_X8B8G8R8, PF_A8R8G8B8);
217        testCase(PF_X8B8G8R8, PF_A8B8G8R8);
218        testCase(PF_X8B8G8R8, PF_B8G8R8A8);
219        testCase(PF_X8B8G8R8, PF_R8G8B8A8);
220
221    //CPPUNIT_ASSERT_MESSAGE("Conversion mismatch", false);
222}
223
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