From 17dc0febb17888015be1e4ad1ed4b096a4909865 Mon Sep 17 00:00:00 2001 From: Travis CI Date: Thu, 19 Mar 2015 20:12:11 +0000 Subject: Gem 206d71791bc3642e8c5391a4c59c30ba7411fab8 osx/i386 built 'master:206d71791bc3642e8c5391a4c59c30ba7411fab8' for osx/i386 --- Gem/examples/10.glsl/game.frag | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 Gem/examples/10.glsl/game.frag (limited to 'Gem/examples/10.glsl/game.frag') diff --git a/Gem/examples/10.glsl/game.frag b/Gem/examples/10.glsl/game.frag new file mode 100644 index 0000000..9b5800d --- /dev/null +++ b/Gem/examples/10.glsl/game.frag @@ -0,0 +1,30 @@ +// Cyrille Henry 2007 + +uniform sampler2D texture; + +const float dx = 1./500.; // change to gemwin dim + +void main (void) +{ + vec2 tmp = (gl_TextureMatrix[0] * gl_TexCoord[0]).st; + + float x = tmp.s; + float y = tmp.t; + + vec4 c; + c = texture2D(texture, vec2(x-dx, y-dx)); + c += texture2D(texture, vec2(x, y-dx)); + c += texture2D(texture, vec2(x+dx, y-dx)); + c += texture2D(texture, vec2(x-dx, y)); + c += texture2D(texture, vec2(x+dx, y)); + c += texture2D(texture, vec2(x-dx, y+dx)); + c += texture2D(texture, vec2(x, y+dx)); + c += texture2D(texture, vec2(x+dx, y+dx)); + + vec4 c1 = texture2D(texture, vec2(x, y)); + + c.rgb = vec3(step(2.5-c1.r,c.r)*step(c.r,3.5)); + c.a = 1.; + + gl_FragColor = c; +} -- cgit v1.2.1