mirror of
https://github.com/yuzu-emu/FasTC.git
synced 2024-12-02 23:24:26 +01:00
fb7805d875
- Add a way to generate a FasTCConfig.cmake file so that you can use cmake without having to install it. - Add install paths for users that want to install it. - Hide all public headers in FasTC/ qualified include path, this way we know what files are public directly from the source. Also, it lets us define build-tree and install-tree include directories a lot easier.
284 lines
8.0 KiB
C++
284 lines
8.0 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 "PVRTCImage.h"
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#include "FasTC/Pixel.h"
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#include "TestUtils.h"
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#include <cstdlib>
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TEST(Image, BilinearUpscale) {
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FasTC::Pixel pxs[16];
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for(uint32 i = 0; i < 4; i++) {
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for(uint32 j = 0; j < 4; j++) {
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pxs[j*4 + i].R() = i*2;
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pxs[j*4 + i].G() = j*2;
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}
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}
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PVRTCC::Image img(4, 4, pxs);
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img.BilinearUpscale(1, 1, PVRTCC::eWrapMode_Clamp);
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EXPECT_EQ(img.GetWidth(), static_cast<uint32>(8));
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EXPECT_EQ(img.GetHeight(), static_cast<uint32>(8));
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for(uint32 i = 0; i < img.GetWidth(); i++) {
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for(uint32 j = 0; j < img.GetHeight(); j++) {
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if(i == 0) {
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EXPECT_EQ(img(i, j).R(), i);
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} else {
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EXPECT_EQ(img(i, j).R(), i-1);
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}
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if(j == 0) {
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EXPECT_EQ(img(i, j).G(), j);
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} else {
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EXPECT_EQ(img(i, j).G(), j-1);
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}
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}
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}
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}
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TEST(Image, BilinearUpscaleMaintainsPixels) {
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srand(0xabd1ca7e);
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const uint32 w = 4;
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const uint32 h = 4;
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FasTC::Pixel pxs[16];
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for(uint32 i = 0; i < w; i++) {
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for(uint32 j = 0; j < h; j++) {
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pxs[j*w + i].R() = rand() % 256;
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pxs[j*w + i].G() = rand() % 256;
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pxs[j*w + i].B() = rand() % 256;
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pxs[j*w + i].A() = rand() % 256;
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}
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}
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PVRTCC::Image img(w, h, pxs);
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img.BilinearUpscale(2, 2, PVRTCC::eWrapMode_Clamp);
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EXPECT_EQ(img.GetWidth(), w << 2);
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EXPECT_EQ(img.GetHeight(), h << 2);
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for(uint32 i = 2; i < img.GetWidth(); i+=4) {
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for(uint32 j = 2; j < img.GetHeight(); j+=4) {
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FasTC::Pixel p = img(i, j);
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uint32 idx = ((j - 2) / 4) * w + ((i-2)/4);
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EXPECT_EQ(PixelPrinter(p.Pack()), PixelPrinter(pxs[idx].Pack()));
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}
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}
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}
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TEST(Image, NonuniformBilinearUpscale) {
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const uint32 kWidth = 4;
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const uint32 kHeight = 8;
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FasTC::Pixel pxs[kWidth * kHeight];
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for(uint32 i = 0; i < kWidth; i++) {
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for(uint32 j = 0; j < kHeight; j++) {
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pxs[j*kWidth + i].R() = i*4;
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pxs[j*kWidth + i].G() = j*2;
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}
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}
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PVRTCC::Image img(kWidth, kHeight, pxs);
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img.BilinearUpscale(2, 1, PVRTCC::eWrapMode_Clamp);
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EXPECT_EQ(img.GetWidth(), static_cast<uint32>(kWidth << 2));
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EXPECT_EQ(img.GetHeight(), static_cast<uint32>(kHeight << 1));
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for(uint32 i = 0; i < img.GetWidth(); i++) {
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for(uint32 j = 0; j < img.GetHeight(); j++) {
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if(i <= 2) {
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EXPECT_EQ(img(i, j).R(), 0);
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} else if(i == 15) {
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EXPECT_EQ(img(i, j).R(), 12);
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} else {
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EXPECT_EQ(img(i, j).R(), i-2);
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}
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if(j == 0) {
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EXPECT_EQ(img(i, j).G(), 0);
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} else {
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EXPECT_EQ(img(i, j).G(), j-1);
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}
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}
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}
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}
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TEST(Image, BilinearUpscaleWrapped) {
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FasTC::Pixel pxs[16];
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// Make sure that our bit depth is less than full...
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for(uint32 i = 0; i < 16; i++) {
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const uint8 newBitDepth[4] = { 6, 5, 6, 5 };
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pxs[i].ChangeBitDepth(newBitDepth);
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}
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for(uint32 i = 0; i < 4; i++) {
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for(uint32 j = 0; j < 4; j++) {
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pxs[j*4 + i].R() = i*4;
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pxs[j*4 + i].G() = j*4;
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}
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}
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PVRTCC::Image img(4, 4, pxs);
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img.BilinearUpscale(2, 2, PVRTCC::eWrapMode_Wrap);
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EXPECT_EQ(img.GetWidth(), static_cast<uint32>(16));
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EXPECT_EQ(img.GetHeight(), static_cast<uint32>(16));
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for(uint32 i = 0; i < img.GetWidth(); i++) {
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for(uint32 j = 0; j < img.GetHeight(); j++) {
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const FasTC::Pixel &p = img(i, j);
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// First make sure that the bit depth didn't change
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uint8 depth[4];
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p.GetBitDepth(depth);
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EXPECT_EQ(depth[0], 6);
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EXPECT_EQ(depth[1], 5);
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EXPECT_EQ(depth[2], 6);
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EXPECT_EQ(depth[3], 5);
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// Now make sure that the values are correct.
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if(i == 0) {
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EXPECT_EQ(p.R(), 6);
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} else if(i == 1) {
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EXPECT_EQ(p.R(), 3);
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} else if(i == 15) {
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EXPECT_EQ(p.R(), 9);
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} else {
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EXPECT_EQ(p.R(), i-2);
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}
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if(j == 0) {
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EXPECT_EQ(p.G(), 6);
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} else if(j == 1) {
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EXPECT_EQ(p.G(), 3);
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} else if(j == 15) {
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EXPECT_EQ(p.G(), 9);
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} else {
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EXPECT_EQ(p.G(), j-2);
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}
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}
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}
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}
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TEST(Image, AverageDownscale) {
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PVRTCC::Image img(8, 8);
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for(uint32 j = 0; j < img.GetHeight(); j++) {
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for(uint32 i = 0; i < img.GetWidth(); i++) {
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if((i ^ j) & 1) {
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img(i, j) = FasTC::Pixel(0xFF000000);
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} else {
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img(i, j) = FasTC::Pixel(0xFFFFFFFF);
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}
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}
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}
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img.AverageDownscale(1, 2);
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EXPECT_EQ(img.GetWidth(), static_cast<uint32>(4));
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EXPECT_EQ(img.GetHeight(), static_cast<uint32>(2));
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for(uint32 j = 0; j < img.GetHeight(); j++) {
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for(uint32 i = 0; i < img.GetWidth(); i++) {
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EXPECT_EQ(PixelPrinter(0xFF7F7F7F), PixelPrinter(img(i, j).Pack()));
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}
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}
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}
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TEST(Image, ContentAwareDownscale) {
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PVRTCC::Image img(8, 8);
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for(uint32 j = 0; j < img.GetHeight(); j++) {
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for(uint32 i = 0; i < img.GetWidth(); i++) {
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if(j < 4) {
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img(i, j) = FasTC::Pixel( 0xFF000000 );
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} else {
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img(i, j) = FasTC::Pixel( 0xFF0000FF );
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}
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}
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}
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img.ContentAwareDownscale(1, 1);
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EXPECT_EQ(img.GetWidth(), static_cast<uint32>(4));
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EXPECT_EQ(img.GetHeight(), static_cast<uint32>(4));
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for(uint32 j = 0; j < img.GetHeight(); j++) {
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for(uint32 i = 0; i < img.GetWidth(); i++) {
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if(j < 2) {
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EXPECT_EQ(img(i, j).R(), 0);
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} else {
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EXPECT_EQ(img(i, j).R(), 255);
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}
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}
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}
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}
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TEST(Image, ChangeBitDepth) {
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PVRTCC::Image img(4, 4);
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uint8 testDepth[4] = { 2, 3, 5, 0 };
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img.ChangeBitDepth(testDepth);
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uint8 depth[4];
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for(uint32 j = 0; j < img.GetHeight(); j++) {
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for(uint32 i = 0; i < img.GetWidth(); i++) {
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img(i, j).GetBitDepth(depth);
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for(int d = 0; d < 4; d++) {
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EXPECT_EQ(testDepth[d], depth[d]);
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}
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}
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}
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}
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