SFML/examples/shader/resources/wave.sfx

uniform sampler2D texture;
uniform sampler2D wave;
uniform vec2 offset;

void main()
{
	vec2 texoffset = vec2(texture2D(wave, (gl_TexCoord[0].xy * offset).xy));
	texoffset -= vec2(0.5, 0.5);
	texoffset *= 0.05;

	gl_FragColor = texture2D(texture, gl_TexCoord[0].xy + texoffset) * gl_Color;
}
FS#25 - Change sf::PostFx to a more general purpose pixel shader class (sf::Shader) Updated the PostFx sample, renamed to Shader Renamed all the static X::CanUseX() functions to X::IsAvailable() to make the API more consistent Moved .def files from /build/VC200X to /src in CSFML Minors fixes in CSFML git-svn-id: https://sfml.svn.sourceforge.net/svnroot/sfml/branches/sfml2@1258 4e206d99-4929-0410-ac5d-dfc041789085 2009-11-03 09:04:40 +00:00			`uniform sampler2D texture;`
			`uniform sampler2D wave;`
			`uniform vec2 offset;`

			`void main()`
			`{`
Fixed error in the "wave" effect of the shader sample git-svn-id: https://sfml.svn.sourceforge.net/svnroot/sfml/branches/sfml2@1270 4e206d99-4929-0410-ac5d-dfc041789085 2009-11-11 07:45:59 +00:00			`vec2 texoffset = vec2(texture2D(wave, (gl_TexCoord[0].xy * offset).xy));`
FS#25 - Change sf::PostFx to a more general purpose pixel shader class (sf::Shader) Updated the PostFx sample, renamed to Shader Renamed all the static X::CanUseX() functions to X::IsAvailable() to make the API more consistent Moved .def files from /build/VC200X to /src in CSFML Minors fixes in CSFML git-svn-id: https://sfml.svn.sourceforge.net/svnroot/sfml/branches/sfml2@1258 4e206d99-4929-0410-ac5d-dfc041789085 2009-11-03 09:04:40 +00:00			`texoffset -= vec2(0.5, 0.5);`
			`texoffset *= 0.05;`

			`gl_FragColor = texture2D(texture, gl_TexCoord[0].xy + texoffset) * gl_Color;`
			`}`