glsl/apps: print usage info if insufficient args

diff --git a/src/glsl/apps/process.c b/src/glsl/apps/process.c
index 2d2ab911ac4da16ac1d967bdd595aa1cf298483d..e65f35cc00b1c422250efbe34231b171c3824bc0 100644 (file)
--- a/src/glsl/apps/process.c
+++ b/src/glsl/apps/process.c
@@ -47,6 +47,7 @@ main(int argc,
    unsigned int i;
 
    if (argc != 3) {
+      printf("Usage: process infile outfile\n");
       return 1;
    }
 

diff --git a/src/glsl/apps/purify.c b/src/glsl/apps/purify.c
index 8c01f4fc6a3d9cc6f41b65746dc709b63697e498..3019e8b2204149938e47a7b8ae1bd966c16cb3c3 100644 (file)
--- a/src/glsl/apps/purify.c
+++ b/src/glsl/apps/purify.c
@@ -45,6 +45,7 @@ main(int argc,
    FILE *out;
 
    if (argc != 3) {
+      printf("Usage: purify infile outfile\n");
       return 1;
    }
 

diff --git a/src/glsl/apps/tokenise.c b/src/glsl/apps/tokenise.c
index 9ff73157e9c82b4f1d04a31b04f22b9d635324c9..c70c3ccbb15eecebc231e6e794f25137d7dec8cc 100644 (file)
--- a/src/glsl/apps/tokenise.c
+++ b/src/glsl/apps/tokenise.c
@@ -46,6 +46,7 @@ main(int argc,
    unsigned int i;
 
    if (argc != 3) {
+      printf("Usage: tokenize infile outfile\n");
       return 1;
    }
 

diff --git a/src/glsl/apps/version.c b/src/glsl/apps/version.c
index 40a4a069c30b833b064fc2c52cc67b9e32e78cda..0420f97294ddc9f16e113426ae20d6e889e392f3 100644 (file)
--- a/src/glsl/apps/version.c
+++ b/src/glsl/apps/version.c
@@ -45,6 +45,7 @@ main(int argc,
    FILE *out;
 
    if (argc != 3) {
+      printf("Usage: version infile outfile\n");
       return 1;
    }