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glsl: check that the fragment shader does not write both gl_FragColor and gl_FragData[]

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Brian Paul 2009-01-07 18:22:56 -07:00 • committed by Alan Hourihane
parent 5727ed130e
commit f8a4ad1aee
1 changed files with 11 additions and 0 deletions
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11
src/mesa/shader/slang/slang_link.c
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@ -644,6 +644,17 @@ _slang_link(GLcontext *ctx,
}
}
/* check that gl_FragColor and gl_FragData are not both written to */
if (shProg->FragmentProgram) {
GLbitfield outputsWritten = shProg->FragmentProgram->Base.OutputsWritten;
if ((outputsWritten & ((1 << FRAG_RESULT_COLR))) &&
(outputsWritten >= (1 << FRAG_RESULT_DATA0))) {
link_error(shProg, "Fragment program cannot write both gl_FragColor"
" and gl_FragData[].\n");
return;
}
}
if (fragProg && shProg->FragmentProgram) {
/* Compute initial program's TexturesUsed info */