mirror of
https://github.com/yuzu-emu/FasTC
synced 2024-11-25 21:37:42 +00:00
347 lines
8.6 KiB
C++
347 lines
8.6 KiB
C++
/* FasTC
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* Copyright (c) 2013 University of North Carolina at Chapel Hill.
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* All rights reserved.
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*
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* Permission to use, copy, modify, and distribute this software and its
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* documentation for educational, research, and non-profit purposes, without
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* fee, and without a written agreement is hereby granted, provided that the
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* above copyright notice, this paragraph, and the following four paragraphs
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* appear in all copies.
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*
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* Permission to incorporate this software into commercial products may be
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* obtained by contacting the authors or the Office of Technology Development
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* at the University of North Carolina at Chapel Hill <otd@unc.edu>.
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*
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* This software program and documentation are copyrighted by the University of
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* North Carolina at Chapel Hill. The software program and documentation are
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* supplied "as is," without any accompanying services from the University of
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* North Carolina at Chapel Hill or the authors. The University of North
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* Carolina at Chapel Hill and the authors do not warrant that the operation of
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* the program will be uninterrupted or error-free. The end-user understands
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* that the program was developed for research purposes and is advised not to
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* rely exclusively on the program for any reason.
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*
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* IN NO EVENT SHALL THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL OR THE
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* AUTHORS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL,
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* OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF
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* THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF NORTH CAROLINA
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* AT CHAPEL HILL OR THE AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND THE AUTHORS SPECIFICALLY
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* DISCLAIM ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY
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* STATUTORY WARRANTY OF NON-INFRINGEMENT. THE SOFTWARE PROVIDED HEREUNDER IS ON
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* AN "AS IS" BASIS, AND THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND
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* THE AUTHORS HAVE NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
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* ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Please send all BUG REPORTS to <pavel@cs.unc.edu>.
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*
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* The authors may be contacted via:
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*
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* Pavel Krajcevski
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* Dept of Computer Science
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* 201 S Columbia St
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* Frederick P. Brooks, Jr. Computer Science Bldg
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* Chapel Hill, NC 27599-3175
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* USA
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*
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* <http://gamma.cs.unc.edu/FasTC/>
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*/
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#include "gtest/gtest.h"
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#include "Pixel.h"
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TEST(Pixel, DefaultConstructor) {
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FasTC::Pixel p;
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EXPECT_EQ(p.R(), 0);
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EXPECT_EQ(p.G(), 0);
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EXPECT_EQ(p.B(), 0);
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EXPECT_EQ(p.A(), 0);
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uint8 depth[4];
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p.GetBitDepth(depth);
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for(int i = 0; i < 4; i++) {
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EXPECT_EQ(depth[i], 8);
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}
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}
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TEST(Pixel, FourWideConstructor) {
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FasTC::Pixel p(1, 2, 3, 4);
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EXPECT_EQ(p.R(), 2);
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EXPECT_EQ(p.G(), 3);
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EXPECT_EQ(p.B(), 4);
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EXPECT_EQ(p.A(), 1);
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uint8 depth[4];
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p.GetBitDepth(depth);
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for(int i = 0; i < 4; i++) {
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EXPECT_EQ(depth[i], 8);
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}
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FasTC::Pixel q(0, 6, -2, 5, 4);
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EXPECT_EQ(q.R(), 6);
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EXPECT_EQ(q.G(), -2);
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EXPECT_EQ(q.B(), 5);
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EXPECT_EQ(q.A(), 0);
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q.GetBitDepth(depth);
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for(int i = 0; i < 4; i++) {
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EXPECT_EQ(depth[i], 4);
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}
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}
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TEST(Pixel, FromBitsAndAssociatedConstructor) {
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const uint8 bits[8] = { 0xA8, 0xB3, 0x7C, 0x21, 0xBD, 0xD4, 0x09, 0x92 };
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FasTC::Pixel ps[2];
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ps[0] = FasTC::Pixel(bits);
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ps[1].FromBits(bits);
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for(int i = 0; i < 2; i++) {
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FasTC::Pixel &p = ps[i];
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EXPECT_EQ(p.A(), 0xA8);
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EXPECT_EQ(p.R(), 0xB3);
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EXPECT_EQ(p.G(), 0x7C);
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EXPECT_EQ(p.B(), 0x21);
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uint8 depth[4];
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p.GetBitDepth(depth);
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for(int j = 0; j < 4; j++) {
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EXPECT_EQ(depth[j], 8);
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}
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}
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const uint8 depth1[4] = { 3, 2, 0, 8 };
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ps[0] = FasTC::Pixel(bits + 3, depth1);
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ps[1].FromBits(bits + 3, depth1);
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for(int i = 0; i < 2; i++) {
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FasTC::Pixel &p = ps[i];
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EXPECT_EQ(p.A(), 0x01);
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EXPECT_EQ(p.R(), 0x00);
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EXPECT_EQ(p.G(), 0xFF);
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EXPECT_EQ(p.B(), 0x37);
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uint8 depth[4];
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p.GetBitDepth(depth);
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EXPECT_EQ(depth[0], 3);
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EXPECT_EQ(depth[1], 2);
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EXPECT_EQ(depth[2], 0);
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EXPECT_EQ(depth[3], 8);
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}
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const uint8 depth2[4] = { 5, 6, 2, 4 };
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ps[0] = FasTC::Pixel(bits + 4, depth2, 2);
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ps[1].FromBits(bits + 4, depth2, 2);
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for(int i = 0; i < 2; i++) {
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FasTC::Pixel &p = ps[i];
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EXPECT_EQ(p.A(), 0x1E);
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EXPECT_EQ(p.R(), 0x3A);
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EXPECT_EQ(p.G(), 0x02);
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EXPECT_EQ(p.B(), 0x00);
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uint8 depth[4];
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p.GetBitDepth(depth);
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EXPECT_EQ(depth[0], 5);
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EXPECT_EQ(depth[1], 6);
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EXPECT_EQ(depth[2], 2);
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EXPECT_EQ(depth[3], 4);
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}
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}
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TEST(Pixel, ToBits) {
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FasTC::Pixel p;
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uint8 bitDepth[4] = { 2, 8, 1, 7 };
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p.ChangeBitDepth(bitDepth);
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p.A() = 0x2;
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p.R() = 0x56;
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p.G() = 0;
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p.B() = 0x4F;
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uint8 bits[3];
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memset(bits, 0, sizeof(bits));
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p.ToBits(bits, sizeof(bits));
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EXPECT_EQ(bits[0], 0x4F);
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EXPECT_EQ(bits[1], 0x56);
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EXPECT_EQ(bits[2], 0x2);
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memset(bits, 0, sizeof(bits));
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p.ToBits(bits, 3, 2);
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EXPECT_EQ(bits[0], 0x3C);
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EXPECT_EQ(bits[1], 0x59);
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EXPECT_EQ(bits[2], 0x09);
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}
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TEST(Pixel, ChangeChannelBitDepth) {
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uint8 val = 0x43;
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uint8 depth = 7;
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EXPECT_EQ(FasTC::Pixel::ChangeBitDepth(val, depth, 8), 0x87);
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EXPECT_EQ(FasTC::Pixel::ChangeBitDepth(val, depth, 7), 0x43);
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EXPECT_EQ(FasTC::Pixel::ChangeBitDepth(val, depth, 6), 0x22);
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EXPECT_EQ(FasTC::Pixel::ChangeBitDepth(val, depth, 2), 0x2);
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EXPECT_EQ(FasTC::Pixel::ChangeBitDepth(val, depth, 0), 0xFF);
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val = 0x3;
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depth = 3;
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EXPECT_EQ(FasTC::Pixel::ChangeBitDepth(val, depth, 8), 0x6D);
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EXPECT_EQ(FasTC::Pixel::ChangeBitDepth(val, depth, 6), 0x1B);
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EXPECT_EQ(FasTC::Pixel::ChangeBitDepth(val, depth, 3), 0x03);
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EXPECT_EQ(FasTC::Pixel::ChangeBitDepth(val, depth, 2), 0x02);
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EXPECT_EQ(FasTC::Pixel::ChangeBitDepth(val, depth, 0), 0xFF);
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}
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TEST(Pixel, ChangeChannelBitDepthFromZero) {
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uint8 val = 0x43;
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uint8 depth = 0;
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EXPECT_EQ(FasTC::Pixel::ChangeBitDepth(val, depth, 8), 0xFF);
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EXPECT_EQ(FasTC::Pixel::ChangeBitDepth(val, depth, 7), 0x7F);
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EXPECT_EQ(FasTC::Pixel::ChangeBitDepth(val, depth, 6), 0x3F);
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EXPECT_EQ(FasTC::Pixel::ChangeBitDepth(val, depth, 2), 0x03);
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// Shouldn't change it...
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EXPECT_EQ(FasTC::Pixel::ChangeBitDepth(val, depth, 0), 0x43);
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}
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TEST(Pixel, ChangePixelBitDepth) {
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const uint8 bits[4] = { 0x86, 0xC0, 0x0, 0x0 };
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const uint8 depth[4] = {7, 3, 0, 0};
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FasTC::Pixel p(bits, depth);
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const uint8 newDepth[4] = { 8, 8, 8, 8 };
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p.ChangeBitDepth(newDepth);
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EXPECT_EQ(p.A(), 0x87);
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EXPECT_EQ(p.R(), 0x6D);
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EXPECT_EQ(p.G(), 0xFF);
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EXPECT_EQ(p.B(), 0xFF);
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uint8 outDepth[4];
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p.GetBitDepth(outDepth);
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for(uint32 i = 0; i < 4; i++) {
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EXPECT_EQ(outDepth[i], 8);
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}
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}
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TEST(Pixel, PackRGBA) {
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const uint8 bits[4] = { 0x86, 0xC0, 0x0, 0x0 };
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const uint8 depth[4] = {7, 3, 0, 0};
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FasTC::Pixel p(bits, depth);
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uint32 val = p.Pack();
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EXPECT_EQ(val, 0x87FFFF6D);
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}
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TEST(Pixel, UnpackRGBA) {
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uint32 rgba = 0x4619B3FE;
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FasTC::Pixel p;
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p.Unpack(rgba);
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EXPECT_EQ(p.A(), 0x46);
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EXPECT_EQ(p.B(), 0x19);
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EXPECT_EQ(p.G(), 0xB3);
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EXPECT_EQ(p.R(), 0xFE);
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p = FasTC::Pixel(rgba);
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EXPECT_EQ(p.A(), 0x46);
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EXPECT_EQ(p.B(), 0x19);
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EXPECT_EQ(p.G(), 0xB3);
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EXPECT_EQ(p.R(), 0xFE);
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p = FasTC::Pixel();
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uint8 newBitDepth[4] = { 3, 5, 2, 1 }; // A R G B
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p.ChangeBitDepth(newBitDepth);
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p.Unpack(rgba);
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EXPECT_EQ(p.A(), 0x2);
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EXPECT_EQ(p.B(), 0x0);
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EXPECT_EQ(p.G(), 0x3);
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EXPECT_EQ(p.R(), 0x1f);
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}
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TEST(Pixel, ScaleColor) {
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FasTC::Pixel p;
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uint8 newBitDepth[4] = { 3, 5, 2, 1 }; // A R G B
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p.ChangeBitDepth(newBitDepth);
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p.R() = 1;
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p.G() = 2;
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p.B() = 3;
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p.A() = 4;
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FasTC::Pixel sp = p * 3;
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FasTC::Pixel ps = 3 * p;
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EXPECT_EQ(sp.R(), 3); EXPECT_EQ(ps.R(), 3);
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EXPECT_EQ(sp.G(), 6); EXPECT_EQ(ps.G(), 6);
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EXPECT_EQ(sp.B(), 9); EXPECT_EQ(ps.B(), 9);
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EXPECT_EQ(sp.A(), 12); EXPECT_EQ(ps.A(), 12);
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uint8 bd[4];
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sp.GetBitDepth(bd);
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for(uint32 i = 0; i < 4; i++) {
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EXPECT_EQ(bd[i], newBitDepth[i]);
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}
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ps.GetBitDepth(bd);
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for(uint32 i = 0; i < 4; i++) {
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EXPECT_EQ(bd[i], newBitDepth[i]);
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}
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}
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TEST(Pixel, ByteClamp) {
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FasTC::Pixel p(256, 3, -2, 10);
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p.ClampByte();
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EXPECT_EQ(p.A(), 255);
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EXPECT_EQ(p.R(), 3);
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EXPECT_EQ(p.G(), 0);
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EXPECT_EQ(p.B(), 10);
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}
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TEST(YCoCgPixel, Conversion) {
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FasTC::Pixel p;
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p.R() = 127;
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p.G() = 127;
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p.B() = 127;
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p.A() = 255;
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FasTC::YCoCgPixel yp (p);
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EXPECT_EQ(yp.Y(), 127);
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EXPECT_EQ(yp.Co(), 128);
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EXPECT_EQ(yp.Cg(), 128);
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}
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TEST(YCoCgPixel, ConvertBack) {
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FasTC::Pixel p;
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p.R() = 241;
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p.G() = 22;
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p.B() = 102;
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p.A() = 124;
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FasTC::YCoCgPixel yp (p);
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FasTC::Pixel bp = yp.ToRGBA();
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for(int i = 0; i < 4; i++) {
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EXPECT_NEAR(p[i], bp[i], 1);
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}
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}
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