mirror of
https://github.com/yuzu-emu/FasTC
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1115c2f9e4
Namely, there are two things that we need to do: 1. Figure out the sub-mode based on the mode bit and the structure of the modulation data. The comments in Block.h describe how we do this. 2. For a given texel index, return 2BPP texel modulation bits.
238 lines
6.8 KiB
C++
238 lines
6.8 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 "Block.h"
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TEST(Block, ConstructorFromBytes) {
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const uint8 data[8] = { 0 };
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PVRTCC::Block b (data);
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EXPECT_FALSE(b.GetModeBit());
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}
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TEST(Block, CopyConstructor) {
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const uint8 data[8] = { 0xAA, 0xAA, 0xAA, 0xAA, 0, 0, 0, 0 };
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PVRTCC::Block b (data);
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PVRTCC::Block b2 (b);
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for(int i = 0; i < 16; i++) {
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EXPECT_EQ(b2.GetLerpValue(i), 0x2);
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}
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}
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TEST(Block, GetColorA) {
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// Test a 555 opaque block
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uint8 data[8] = { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8A, 0x96 };
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PVRTCC::Block b(data);
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PVRTCC::Pixel p = b.GetColorA();
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EXPECT_EQ(p.A(), 255);
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EXPECT_EQ(p.R(), 5);
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EXPECT_EQ(p.G(), 20);
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EXPECT_EQ(p.B(), 10);
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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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if(i == 0) {
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EXPECT_EQ(depth[i], 0);
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} else {
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EXPECT_EQ(depth[i], 5);
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}
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}
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// Test a 3444 transparent block
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data[7] = 0x16;
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b = PVRTCC::Block(data);
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p = b.GetColorA();
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EXPECT_EQ(p.A(), 1);
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EXPECT_EQ(p.R(), 6);
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EXPECT_EQ(p.G(), 8);
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EXPECT_EQ(p.B(), 10);
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p.GetBitDepth(depth);
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for(int i = 0; i < 4; i++) {
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if(i == 0) {
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EXPECT_EQ(depth[i], 3);
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} else {
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EXPECT_EQ(depth[i], 4);
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}
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}
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}
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TEST(Block, GetColorB) {
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// Test a 554 opaque block
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uint8 data[8] = { 0x0, 0x0, 0x0, 0x0, 0x8A, 0x96, 0x0, 0x0 };
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PVRTCC::Block b(data);
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PVRTCC::Pixel p = b.GetColorB();
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EXPECT_EQ(p.A(), 255);
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EXPECT_EQ(p.R(), 5);
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EXPECT_EQ(p.G(), 20);
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EXPECT_EQ(p.B(), 5);
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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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if(i == 0) {
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EXPECT_EQ(depth[i], 0);
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} else if(i == 3) {
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EXPECT_EQ(depth[i], 4);
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} else {
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EXPECT_EQ(depth[i], 5);
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}
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}
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// Test a 3443 transparent block
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data[5] = 0x16;
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b = PVRTCC::Block(data);
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p = b.GetColorB();
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EXPECT_EQ(p.A(), 1);
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EXPECT_EQ(p.R(), 6);
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EXPECT_EQ(p.G(), 8);
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EXPECT_EQ(p.B(), 5);
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p.GetBitDepth(depth);
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for(int i = 0; i < 4; i++) {
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if(i == 0 || i == 3) {
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EXPECT_EQ(depth[i], 3);
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} else {
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EXPECT_EQ(depth[i], 4);
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}
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}
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}
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TEST(Block, GetModeBit) {
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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 };
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PVRTCC::Block b (modeData);
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EXPECT_TRUE(b.GetModeBit());
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b = PVRTCC::Block(noModeData);
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EXPECT_FALSE(b.GetModeBit());
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}
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TEST(Block, GetLerpValue) {
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const uint8 data[8] = { 0xD8, 0x27, 0xE4, 0x1B, 0x0, 0x0, 0x0, 0x0 };
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PVRTCC::Block b(data);
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EXPECT_EQ(b.GetLerpValue(0), 0);
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EXPECT_EQ(b.GetLerpValue(1), 2);
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EXPECT_EQ(b.GetLerpValue(2), 1);
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EXPECT_EQ(b.GetLerpValue(3), 3);
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EXPECT_EQ(b.GetLerpValue(4), 3);
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EXPECT_EQ(b.GetLerpValue(5), 1);
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EXPECT_EQ(b.GetLerpValue(6), 2);
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EXPECT_EQ(b.GetLerpValue(7), 0);
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EXPECT_EQ(b.GetLerpValue(8), 0);
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EXPECT_EQ(b.GetLerpValue(9), 1);
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EXPECT_EQ(b.GetLerpValue(10), 2);
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EXPECT_EQ(b.GetLerpValue(11), 3);
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EXPECT_EQ(b.GetLerpValue(12), 3);
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EXPECT_EQ(b.GetLerpValue(13), 2);
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EXPECT_EQ(b.GetLerpValue(14), 1);
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EXPECT_EQ(b.GetLerpValue(15), 0);
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}
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TEST(Block, Get2BPPLerpValue) {
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uint8 noModData[8] = { 0xDA, 0x27, 0xE4, 0x1B, 0x0, 0x0, 0x0, 0x0 };
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PVRTCC::Block b(noModData);
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uint32 dataInt = *(reinterpret_cast<const uint32 *>(noModData));
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for(uint32 i = 0; i < 32; i++) {
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EXPECT_EQ(b.Get2BPPLerpValue(i), (dataInt >> i) & 0x1);
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}
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uint8 modData[8];
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memcpy(modData, noModData, sizeof(modData));
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modData[4] = 0x1;
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b = PVRTCC::Block(modData);
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EXPECT_EQ(b.Get2BPPLerpValue(0), 3);
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EXPECT_EQ(b.Get2BPPLerpValue(1), 2);
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EXPECT_EQ(b.Get2BPPLerpValue(2), 1);
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EXPECT_EQ(b.Get2BPPLerpValue(3), 3);
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EXPECT_EQ(b.Get2BPPLerpValue(4), 3);
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EXPECT_EQ(b.Get2BPPLerpValue(5), 1);
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EXPECT_EQ(b.Get2BPPLerpValue(6), 2);
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EXPECT_EQ(b.Get2BPPLerpValue(7), 0);
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EXPECT_EQ(b.Get2BPPLerpValue(8), 0);
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EXPECT_EQ(b.Get2BPPLerpValue(9), 1);
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EXPECT_EQ(b.Get2BPPLerpValue(10), 2);
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EXPECT_EQ(b.Get2BPPLerpValue(11), 3);
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EXPECT_EQ(b.Get2BPPLerpValue(12), 3);
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EXPECT_EQ(b.Get2BPPLerpValue(13), 2);
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EXPECT_EQ(b.Get2BPPLerpValue(14), 1);
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EXPECT_EQ(b.Get2BPPLerpValue(15), 0);
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}
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TEST(Block, Get2BPPSubMode) {
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uint8 data[8] = { 0xDA, 0x27, 0xE4, 0x1B, 0x1, 0x0, 0x0, 0x0 };
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PVRTCC::Block b(data);
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EXPECT_EQ(b.Get2BPPSubMode(), PVRTCC::Block::e2BPPSubMode_All);
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data[0] = 0xDB;
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b = PVRTCC::Block(data);
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EXPECT_EQ(b.Get2BPPSubMode(), PVRTCC::Block::e2BPPSubMode_Horizontal);
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data[2] = 0xF4;
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b = PVRTCC::Block(data);
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EXPECT_EQ(b.Get2BPPSubMode(), PVRTCC::Block::e2BPPSubMode_Vertical);
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}
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