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author | nobody <nobody@28c7f869-5b4e-e670-f602-82bfaf57f300> | 2005-08-26 21:18:36 +0000 |
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committer | nobody <nobody@28c7f869-5b4e-e670-f602-82bfaf57f300> | 2005-08-26 21:18:36 +0000 |
commit | c70acc013c054d977fc7df0309ae29503e3d43af (patch) | |
tree | 679d9535fc0313cba50c499fb92a64bb46999fc7 /src/GLSLShaderTest/simple.frag | |
parent | d73245421b294f50b9d4728bcbc717876f83d250 (diff) |
This commit was manufactured by cvs2svn to create tagexp-1_4_0-build6
'exp-1_4_0-build6'.
Diffstat (limited to 'src/GLSLShaderTest/simple.frag')
-rw-r--r-- | src/GLSLShaderTest/simple.frag | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/src/GLSLShaderTest/simple.frag b/src/GLSLShaderTest/simple.frag new file mode 100644 index 0000000..61c83ec --- /dev/null +++ b/src/GLSLShaderTest/simple.frag @@ -0,0 +1,62 @@ +/* + * $RCSfile$ + * + * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistribution of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * - Redistribution in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * Neither the name of Sun Microsystems, Inc. or the names of + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * This software is provided "AS IS," without a warranty of any + * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND + * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY + * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL + * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF + * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS + * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR + * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, + * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND + * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR + * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + * + * You acknowledge that this software is not designed, licensed or + * intended for use in the design, construction, operation or + * maintenance of any nuclear facility. + * + * $Revision$ + * $Date$ + * $State$ + */ + +// Simple GLSL fragment program to attenuate the input fragment color as a +// function of the distance of the fragment position from the center +// of the window + +const float windowSize = 700.0; // TODO: this should be a built-in parameter! + +void main() +{ + // Compute distance from center in range [0.0, 1.0] + vec2 dist = min(abs((gl_FragCoord.xy - (windowSize)/2.0) / windowSize), 1.0); + vec2 invDist = 1.0 - dist; + + // Compute attenuation + float atten = invDist.x * invDist.y; + vec4 outcolor = (gl_Color + gl_SecondaryColor) * atten; + + gl_FragColor = outcolor; +} |