Messages

1

Graphics / Re: Mirroring a texture

« on: June 07, 2018, 08:02:11 am »

This texture is added to a list of layers to render into a single texture using a RenderTexture. Due to this organization it would be difficult to use a sprite.

Could you elaborate on the use of shaders to mirror textures?

2

Graphics / Mirroring a texture

« on: June 07, 2018, 07:02:23 am »

I know that you can flip a sprite along its axes with setScale, but is it possible to flip a texture? I need to mirror a texture along its vertical axis.

Update: As a temporary solution I have implemented my own mirroring method. However this requires converting the texture to an image and back again. A solution which would manipulate the texture itself would be preferable.

sf::Image UTIL_flipImage(sf::Image *pImage)
{
        sf::Vector2u sourceImageDimensions = pImage->getSize();
        sf::Image result;
        result.create(sourceImageDimensions.x, sourceImageDimensions.y);

        for ( int16_t sourceImageRowIndex = 0; sourceImageRowIndex < sourceImageDimensions.y; sourceImageRowIndex++ )
        {
                for( int16_t rowPixelIndex = 0; rowPixelIndex < sourceImageDimensions.x; rowPixelIndex++ )
                {
                        result.setPixel(rowPixelIndex, sourceImageRowIndex, pImage->getPixel(sourceImageDimensions.x - (rowPixelIndex + 1), sourceImageRowIndex) );
                }
        }
        return result;
}

3

General / Re: One unresolved external symbol in Image.cpp.obj

« on: May 27, 2018, 05:43:28 am »

I am not trying to link against libjpeg

4

General / One unresolved external symbol in Image.cpp.obj

« on: May 27, 2018, 04:12:20 am »

Having problems setting up my SFML project. I noticed that in an old sfml project (2.4.2) I had made I had included "jpeg.lib", however it is not included in this project. I couldn't find it. Could that be the problem?

VC++ 2017 on x64 windows host building for x86 with SFML version 2.5.0

Linker error message:

(click to show/hide)

LNK2019   unresolved external symbol ___std_swap_ranges_trivially_swappable_noalias referenced in function "unsigned char * __cdecl std::_Swap_ranges_unchecked<unsigned char,0>(unsigned char * const,unsigned char * const,unsigned char * const)" (??$_Swap_ranges_unchecked@E$0A@@std@@YAPAEQAE00@Z)   [...]\sfml-graphics-s-d.lib(Image.cpp.obj)

My linker dependency list for debug config:

(click to show/hide)

sfml-main-d.lib;
sfml-graphics-s-d.lib;
sfml-window-s-d.lib;
sfml-system-s-d.lib;
opengl32.lib;
winmm.lib;
kernel32.lib;
user32.lib;
gdi32.lib;
winspool.lib;
comdlg32.lib;
advapi32.lib;
shell32.lib;
ole32.lib;
oleaut32.lib;
uuid.lib;
odbc32.lib;
odbccp32.lib;
%(AdditionalDependencies)

I have the SFML_STATIC preprocessor directive set.