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{
Copyright 2009-2017 Michalis Kamburelis.
This file is part of "Castle Game Engine".
"Castle Game Engine" is free software; see the file COPYING.txt,
included in this distribution, for details about the copyright.
"Castle Game Engine" is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
----------------------------------------------------------------------------
}
unit TestCastleCompositeImage;
interface
uses
fpcunit, testutils, testregistry;
type
TTestCastleCompositeImage = class(TTestCase)
published
procedure TestLoadSave;
procedure TestLoadSaveS3TC;
end;
implementation
uses SysUtils, CastleVectors, CastleImages, CastleCompositeImage, Classes;
procedure TTestCastleCompositeImage.TestLoadSave;
procedure AssertImagesEqual(I1, I2: TEncodedImage);
begin
AssertTrue(I1.ClassType = I2.ClassType);
AssertTrue(I1.Width = I2.Width);
AssertTrue(I1.Height = I2.Height);
AssertTrue(I1.Depth = I2.Depth);
if I1 is TCastleImage then
begin
AssertTrue(TCastleImage(I1).PixelSize = TCastleImage(I2).PixelSize);
AssertTrue(CompareMem(I1.RawPixels, I2.RawPixels,
I1.Width * I1.Height * I1.Depth * TCastleImage(I1).PixelSize));
end;
end;
procedure AssertCompositeEqual(Composite, Composite2: TCompositeImage);
var
I: Integer;
begin
AssertTrue(Composite.Images.Count = Composite2.Images.Count);
for I := 0 to Composite.Images.Count - 1 do
AssertImagesEqual(Composite.Images[I], Composite2.Images[I]);
end;
procedure TestImage(const FileName: string; const Is3d: boolean);
var
Composite, Composite2: TCompositeImage;
StreamNoFlatten, StreamFlatten: TMemoryStream;
OldImagesCount: Cardinal;
begin
StreamNoFlatten := TMemoryStream.Create;
StreamFlatten := TMemoryStream.Create;
Composite := TCompositeImage.Create;
Composite2 := TCompositeImage.Create;
try
Composite.LoadFromFile(FileName);
{ save to stream without flattening }
Composite.SaveToStream(StreamNoFlatten, 'image/x-dds');
{ flatten (making sure it actually did something: changed Composite.Images.Count) }
OldImagesCount := Composite.Images.Count;
Composite.Flatten3d;
if Is3d then
AssertTrue(OldImagesCount < Cardinal(Composite.Images.Count)) else
AssertTrue(OldImagesCount = Cardinal(Composite.Images.Count));
{ save to stream with flattening }
Composite.SaveToStream(StreamFlatten, 'image/x-dds');
{ compare saved with and without flattening: saved image should
be exactly the same. }
StreamNoFlatten.Position := 0;
StreamFlatten.Position := 0;
{ tests:
StreamNoFlatten.SaveToFile('/tmp/StreamNoFlatten.dds');
StreamFlatten.SaveToFile('/tmp/StreamFlatten.dds'); }
AssertTrue(StreamNoFlatten.Size = StreamFlatten.Size);
AssertTrue(CompareMem(StreamNoFlatten.Memory, StreamFlatten.Memory,
StreamNoFlatten.Size));
{ read back (to get back to non-flattened version) }
Composite.Close;
Composite.LoadFromFile(FileName);
{ compare with what is loaded from StreamNoFlatten and StreamFlatten:
they both should be equal to current Composite. }
StreamNoFlatten.Position := 0;
Composite2.LoadFromStream(StreamNoFlatten, '', 'image/x-dds');
AssertCompositeEqual(Composite, Composite2);
StreamFlatten.Position := 0;
Composite2.LoadFromStream(StreamFlatten, '', 'image/x-dds');
AssertCompositeEqual(Composite, Composite2);
finally
FreeAndNil(Composite);
FreeAndNil(Composite2);
FreeAndNil(StreamNoFlatten);
FreeAndNil(StreamFlatten);
end;
end;
begin
TestImage('data/images/mipmaps_no.dds', false);
TestImage('data/images/mipmaps_yes.dds', false);
TestImage('data/images/random3d.dds', true);
TestImage('data/images/random3d_with_mipmaps.dds', true);
end;
procedure TTestCastleCompositeImage.TestLoadSaveS3TC;
procedure TestImage(const FileName: string; const Is3d: boolean);
var
Composite: TCompositeImage;
Stream1, Stream2: TMemoryStream;
begin
Stream1 := TMemoryStream.Create;
Stream2 := TMemoryStream.Create;
Composite := TCompositeImage.Create;
try
{ load file into Composite }
Composite.LoadFromFile(FileName);
AssertTrue(Composite.Images[0] is TGPUCompressedImage);
{ save Composite into Stream1 }
Composite.SaveToStream(Stream1, 'image/x-dds');
{ load Stream1 into Composite }
Stream1.Position := 0;
Composite.LoadFromStream(Stream1, '', 'image/x-dds');
AssertTrue(Composite.Images[0] is TGPUCompressedImage);
{ save Composite into Stream2 }
Composite.SaveToStream(Stream2, 'image/x-dds');
{ Test that both save and load do appropriate vertical flip.
If only one would do vertical flip, streams would differ.
Note that we compare two streams obtained from saving Composite.
We do *not* compare original FileName stream, as it's not guaranteed
that we save it to exactly the same binary stream (for example,
when saving we always add PitchOrLinearSize, while on load it may
not be present). }
AssertTrue(Stream1.Size = Stream2.Size);
AssertTrue(CompareMem(Stream1.Memory, Stream2.Memory, Stream1.Size));
finally
FreeAndNil(Composite);
FreeAndNil(Stream1);
FreeAndNil(Stream2);
end;
end;
begin
TestImage('data/images/metal_decal_dxt5.dds', true);
end;
initialization
RegisterTest(TTestCastleCompositeImage);
end.
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