Force the LC_NUMERIC locale temporarily to C in finalize(), to avoid problems with...

[movit] / effect_chain.cpp

diff --git a/effect_chain.cpp b/effect_chain.cpp
index 933553c7455f47df1f45268e1e771dc01f6dad3d..8767f7e28a2bdcfa757ae45e8b9ca3bd9f0a6570 100644 (file)
--- a/effect_chain.cpp
+++ b/effect_chain.cpp
@@ -3,6 +3,7 @@
 #include <stdio.h>
 #include <math.h>
 #include <string.h>
+#include <locale.h>
 #include <assert.h>
 #include <GL/glew.h>
 
@@ -1307,6 +1308,10 @@ Node *EffectChain::find_output_node()
 
 void EffectChain::finalize()
 {
+       // Save the current locale, and set it to C, so that we can output decimal
+       // numbers with printf and be sure to get them in the format mandated by GLSL.
+       char *saved_locale = setlocale(LC_NUMERIC, "C");
+
        // Output the graph as it is before we do any conversions on it.
        output_dot("step0-start.dot");
 
@@ -1399,6 +1404,7 @@ void EffectChain::finalize()
        assert(phases[0]->inputs.empty());
        
        finalized = true;
+       setlocale(LC_NUMERIC, saved_locale);
 }
 
 void EffectChain::render_to_fbo(GLuint dest_fbo, unsigned width, unsigned height)