From 97eba76b8c5fe60738716c4dce9404de417a7d34 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Wed, 30 Jun 2010 14:51:50 -0700 Subject: glsl2: Allow a fragment shader to not write a color. I can't find any text justifying this check, and it caused a reasonable-looking shader in glsl-bug-22603 (which writes only gl_FragDepth) to fail. --- src/glsl/linker.cpp | 6 ------ 1 file changed, 6 deletions(-) (limited to 'src') diff --git a/src/glsl/linker.cpp b/src/glsl/linker.cpp index 11fccba378..5227d42e35 100644 --- a/src/glsl/linker.cpp +++ b/src/glsl/linker.cpp @@ -232,12 +232,6 @@ validate_fragment_shader_executable(struct gl_shader_program *prog, frag_color.run(shader->ir); frag_data.run(shader->ir); - if (!frag_color.variable_found() && !frag_data.variable_found()) { - linker_error_printf(prog, "fragment shader does not write to " - "`gl_FragColor' or `gl_FragData'\n"); - return false; - } - if (frag_color.variable_found() && frag_data.variable_found()) { linker_error_printf(prog, "fragment shader writes to both " "`gl_FragColor' and `gl_FragData'\n"); -- cgit v1.2.3