glsl: implement compiling/linking of separate compilation units

A shader program may consist of multiple shaders (source code units).
If we find there are unresolved functions after compiling the unit that
defines main(), we'll concatenate all the respective vertex or fragment
shaders then recompile.

This isn't foolproof but should work in most cases.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index a5d3be3543..e77dd1d226 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -1974,6 +1974,7 @@ struct gl_shader
    GLboolean DeletePending;
    GLboolean CompileStatus;
    GLboolean Main;  /**< shader defines main() */
+   GLboolean UnresolvedRefs;
    const GLchar *Source;  /**< Source code string */
    struct gl_program *Program;  /**< Post-compile assembly code */
    GLchar *InfoLog;