Mesa (master): linker: Allow geometry shader without vertex shader for separable programs

[Ian Romanick]

Module: Mesa
Branch: master
Commit: c557eb77225433fa9415a94fc9db3ce36374df64
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=c557eb77225433fa9415a94fc9db3ce36374df64

Author: Ian Romanick <ian.d.romanick at intel.com>
Date:   Thu Jan 23 18:26:29 2014 -0800

linker: Allow geometry shader without vertex shader for separable programs

Signed-off-by: Ian Romanick <ian.d.romanick at intel.com>
Reviewed-by: Eric Anholt <eric at anholt.net>

---

 src/glsl/linker.cpp |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/glsl/linker.cpp b/src/glsl/linker.cpp
index de7e3cd..fbc0358 100644
--- a/src/glsl/linker.cpp
+++ b/src/glsl/linker.cpp
@@ -2300,7 +2300,8 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
    /* Geometry shaders have to be linked with vertex shaders.
     */
    if (num_shaders[MESA_SHADER_GEOMETRY] > 0 &&
-       num_shaders[MESA_SHADER_VERTEX] == 0) {
+       num_shaders[MESA_SHADER_VERTEX] == 0 &&
+       !prog->SeparateShader) {
       linker_error(prog, "Geometry shader must be linked with "
 		   "vertex shader\n");
       goto done;