diff options
| author | Brian Paul <brianp@vmware.com> | 2009-01-07 18:22:56 -0700 |
|---|---|---|
| committer | Alan Hourihane <alanh@vmware.com> | 2009-01-09 11:16:37 +0000 |
| commit | f8a4ad1aeeef1debe6f206bc30696304edd7704c (patch) | |
| tree | 11fe07ae10af9ab70e414caf58d0bb6a39cb980a /src/mesa/shader/slang/slang_link.c | |
| parent | 5727ed130ef1d3adb87de89ea717e07726131f3e (diff) | |
glsl: check that the fragment shader does not write both gl_FragColor and gl_FragData[]
Diffstat (limited to 'src/mesa/shader/slang/slang_link.c')
| -rw-r--r-- | src/mesa/shader/slang/slang_link.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/mesa/shader/slang/slang_link.c b/src/mesa/shader/slang/slang_link.c index 3f953d86e7..a68cafc086 100644 --- a/src/mesa/shader/slang/slang_link.c +++ b/src/mesa/shader/slang/slang_link.c @@ -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 */ |