FasTC/PVRTCEncoder/test/BlockTest.cpp

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/* FasTC
* Copyright (c) 2013 University of North Carolina at Chapel Hill.
* All rights reserved.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for educational, research, and non-profit purposes, without
* fee, and without a written agreement is hereby granted, provided that the
* above copyright notice, this paragraph, and the following four paragraphs
* appear in all copies.
*
* Permission to incorporate this software into commercial products may be
* obtained by contacting the authors or the Office of Technology Development
* at the University of North Carolina at Chapel Hill <otd@unc.edu>.
*
* This software program and documentation are copyrighted by the University of
* North Carolina at Chapel Hill. The software program and documentation are
* supplied "as is," without any accompanying services from the University of
* North Carolina at Chapel Hill or the authors. The University of North
* Carolina at Chapel Hill and the authors do not warrant that the operation of
* the program will be uninterrupted or error-free. The end-user understands
* that the program was developed for research purposes and is advised not to
* rely exclusively on the program for any reason.
*
* IN NO EVENT SHALL THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL OR THE
* AUTHORS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL,
* OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF
* THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF NORTH CAROLINA
* AT CHAPEL HILL OR THE AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND THE AUTHORS SPECIFICALLY
* DISCLAIM ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY
* STATUTORY WARRANTY OF NON-INFRINGEMENT. THE SOFTWARE PROVIDED HEREUNDER IS ON
* AN "AS IS" BASIS, AND THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND
* THE AUTHORS HAVE NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
* ENHANCEMENTS, OR MODIFICATIONS.
*
* Please send all BUG REPORTS to <pavel@cs.unc.edu>.
*
* The authors may be contacted via:
*
* Pavel Krajcevski
* Dept of Computer Science
* 201 S Columbia St
* Frederick P. Brooks, Jr. Computer Science Bldg
* Chapel Hill, NC 27599-3175
* USA
*
* <http://gamma.cs.unc.edu/FasTC/>
*/
#include "gtest/gtest.h"
#include "Block.h"
TEST(Block, ConstructorFromBytes) {
const uint8 data[8] = { 0 };
PVRTCC::Block b (data);
EXPECT_FALSE(b.GetModeBit());
}
TEST(Block, CopyConstructor) {
const uint8 data[8] = { 0xAA, 0xAA, 0xAA, 0xAA, 0, 0, 0, 0 };
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PVRTCC::Block b (data);
PVRTCC::Block b2 (b);
for(int i = 0; i < 16; i++) {
EXPECT_EQ(b2.GetLerpValue(i), 0x2);
}
}
TEST(Block, GetColorA) {
// Test a 555 opaque block
uint8 data[8] = { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8A, 0x96 };
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PVRTCC::Block b(data);
PVRTCC::Pixel p = b.GetColorA();
EXPECT_EQ(p.A(), 255);
EXPECT_EQ(p.R(), 5);
EXPECT_EQ(p.G(), 20);
EXPECT_EQ(p.B(), 10);
uint8 depth[4];
p.GetBitDepth(depth);
for(int i = 0; i < 4; i++) {
if(i == 0) {
EXPECT_EQ(depth[i], 0);
} else {
EXPECT_EQ(depth[i], 5);
}
}
// Test a 3444 transparent block
data[7] = 0x16;
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b = PVRTCC::Block(data);
p = b.GetColorA();
EXPECT_EQ(p.A(), 1);
EXPECT_EQ(p.R(), 6);
EXPECT_EQ(p.G(), 8);
EXPECT_EQ(p.B(), 10);
p.GetBitDepth(depth);
for(int i = 0; i < 4; i++) {
if(i == 0) {
EXPECT_EQ(depth[i], 3);
} else {
EXPECT_EQ(depth[i], 4);
}
}
}
TEST(Block, GetColorB) {
// Test a 554 opaque block
uint8 data[8] = { 0x0, 0x0, 0x0, 0x0, 0x8A, 0x96, 0x0, 0x0 };
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PVRTCC::Block b(data);
PVRTCC::Pixel p = b.GetColorB();
EXPECT_EQ(p.A(), 255);
EXPECT_EQ(p.R(), 5);
EXPECT_EQ(p.G(), 20);
EXPECT_EQ(p.B(), 5);
uint8 depth[4];
p.GetBitDepth(depth);
for(int i = 0; i < 4; i++) {
if(i == 0) {
EXPECT_EQ(depth[i], 0);
} else if(i == 3) {
EXPECT_EQ(depth[i], 4);
} else {
EXPECT_EQ(depth[i], 5);
}
}
// Test a 3443 transparent block
data[5] = 0x16;
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b = PVRTCC::Block(data);
p = b.GetColorB();
EXPECT_EQ(p.A(), 1);
EXPECT_EQ(p.R(), 6);
EXPECT_EQ(p.G(), 8);
EXPECT_EQ(p.B(), 5);
p.GetBitDepth(depth);
for(int i = 0; i < 4; i++) {
if(i == 0 || i == 3) {
EXPECT_EQ(depth[i], 3);
} else {
EXPECT_EQ(depth[i], 4);
}
}
}
TEST(Block, GetModeBit) {
const uint8 modeData[8] = { 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0 };
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const uint8 noModeData[8] = { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 };
PVRTCC::Block b (modeData);
EXPECT_TRUE(b.GetModeBit());
b = PVRTCC::Block(noModeData);
EXPECT_FALSE(b.GetModeBit());
}
TEST(Block, GetLerpValue) {
const uint8 data[8] = { 0xD8, 0x27, 0xE4, 0x1B, 0x0, 0x0, 0x0, 0x0 };
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PVRTCC::Block b(data);
EXPECT_EQ(b.GetLerpValue(0), 0);
EXPECT_EQ(b.GetLerpValue(1), 2);
EXPECT_EQ(b.GetLerpValue(2), 1);
EXPECT_EQ(b.GetLerpValue(3), 3);
EXPECT_EQ(b.GetLerpValue(4), 3);
EXPECT_EQ(b.GetLerpValue(5), 1);
EXPECT_EQ(b.GetLerpValue(6), 2);
EXPECT_EQ(b.GetLerpValue(7), 0);
EXPECT_EQ(b.GetLerpValue(8), 0);
EXPECT_EQ(b.GetLerpValue(9), 1);
EXPECT_EQ(b.GetLerpValue(10), 2);
EXPECT_EQ(b.GetLerpValue(11), 3);
EXPECT_EQ(b.GetLerpValue(12), 3);
EXPECT_EQ(b.GetLerpValue(13), 2);
EXPECT_EQ(b.GetLerpValue(14), 1);
EXPECT_EQ(b.GetLerpValue(15), 0);
}
TEST(Block, Get2BPPLerpValue) {
uint8 noModData[8] = { 0xDA, 0x27, 0xE4, 0x1B, 0x0, 0x0, 0x0, 0x0 };
PVRTCC::Block b(noModData);
uint32 dataInt = *(reinterpret_cast<const uint32 *>(noModData));
for(uint32 i = 0; i < 32; i++) {
EXPECT_EQ(b.Get2BPPLerpValue(i), (dataInt >> i) & 0x1);
}
uint8 modData[8];
memcpy(modData, noModData, sizeof(modData));
modData[4] = 0x1;
b = PVRTCC::Block(modData);
EXPECT_EQ(b.Get2BPPLerpValue(0), 3);
EXPECT_EQ(b.Get2BPPLerpValue(1), 2);
EXPECT_EQ(b.Get2BPPLerpValue(2), 1);
EXPECT_EQ(b.Get2BPPLerpValue(3), 3);
EXPECT_EQ(b.Get2BPPLerpValue(4), 3);
EXPECT_EQ(b.Get2BPPLerpValue(5), 1);
EXPECT_EQ(b.Get2BPPLerpValue(6), 2);
EXPECT_EQ(b.Get2BPPLerpValue(7), 0);
EXPECT_EQ(b.Get2BPPLerpValue(8), 0);
EXPECT_EQ(b.Get2BPPLerpValue(9), 1);
EXPECT_EQ(b.Get2BPPLerpValue(10), 2);
EXPECT_EQ(b.Get2BPPLerpValue(11), 3);
EXPECT_EQ(b.Get2BPPLerpValue(12), 3);
EXPECT_EQ(b.Get2BPPLerpValue(13), 2);
EXPECT_EQ(b.Get2BPPLerpValue(14), 1);
EXPECT_EQ(b.Get2BPPLerpValue(15), 0);
}
TEST(Block, Get2BPPSubMode) {
uint8 data[8] = { 0xDA, 0x27, 0xE4, 0x1B, 0x1, 0x0, 0x0, 0x0 };
PVRTCC::Block b(data);
EXPECT_EQ(b.Get2BPPSubMode(), PVRTCC::Block::e2BPPSubMode_All);
data[0] = 0xDB;
b = PVRTCC::Block(data);
EXPECT_EQ(b.Get2BPPSubMode(), PVRTCC::Block::e2BPPSubMode_Horizontal);
data[2] = 0xF4;
b = PVRTCC::Block(data);
EXPECT_EQ(b.Get2BPPSubMode(), PVRTCC::Block::e2BPPSubMode_Vertical);
}