PNM output support.

[apitrace] / glretrace_main.cpp

diff --git a/glretrace_main.cpp b/glretrace_main.cpp
index 5d45356171f0f9b0fde31d622f81c02ad8c8ea60..56ee763210b4e3848f4b359549cb9e72c8f42580 100644 (file)
--- a/glretrace_main.cpp
+++ b/glretrace_main.cpp
@@ -130,10 +130,14 @@ void snapshot(unsigned call_no) {
     }
 
     if (snapshot_prefix) {
-        char filename[PATH_MAX];
-        snprintf(filename, sizeof filename, "%s%010u.png", snapshot_prefix, call_no);
-        if (src->writePNG(filename) && retrace::verbosity >= 0) {
-            std::cout << "Wrote " << filename << "\n";
+        if (snapshot_prefix[0] == '-' && snapshot_prefix[1] == 0) {
+            src->writePNM(std::cout);
+        } else {
+            char filename[PATH_MAX];
+            snprintf(filename, sizeof filename, "%s%010u.png", snapshot_prefix, call_no);
+            if (src->writePNG(filename) && retrace::verbosity >= 0) {
+                std::cout << "Wrote " << filename << "\n";
+            }
         }
     }
 
@@ -157,6 +161,7 @@ void frame_complete(unsigned call_no) {
 
 
 static void display(void) {
+    startTime = OS::GetTime();
     Trace::Call *call;
 
     while ((call = parser.parse_call())) {
@@ -219,7 +224,7 @@ static void usage(void) {
         "  -c PREFIX    compare against snapshots\n"
         "  -db          use a double buffer visual (default)\n"
         "  -sb          use a single buffer visual\n"
-        "  -s PREFIX    take snapshots\n"
+        "  -s PREFIX    take snapshots; `-` for PNM stdout output\n"
         "  -S FREQUENCY snapshot frequency: frame (default), framebuffer, or draw\n"
         "  -v           verbose output\n"
         "  -D CALLNO    dump state at specific call no\n"
@@ -263,6 +268,9 @@ int main(int argc, char **argv)
             if (snapshot_frequency == FREQUENCY_NEVER) {
                 snapshot_frequency = FREQUENCY_FRAME;
             }
+            if (snapshot_prefix[0] == '-' && snapshot_prefix[1] == 0) {
+                retrace::verbosity = -2;
+            }
         } else if (!strcmp(arg, "-S")) {
             arg = argv[++i];
             if (!strcmp(arg, "frame")) {
@@ -294,11 +302,14 @@ int main(int argc, char **argv)
     visual = ws->createVisual(double_buffer);
 
     for ( ; i < argc; ++i) {
-        if (parser.open(argv[i])) {
-            startTime = OS::GetTime();
-            display();
-            parser.close();
+        if (!parser.open(argv[i])) {
+            std::cerr << "error: failed to open " << argv[i] << "\n";
+            return 1;
         }
+
+        display();
+
+        parser.close();
     }
 
     return 0;