make checkGlError generally available

diff --git a/Makefile b/Makefile
index c69fff735100438408997aa797725410ca9bfa49..0322bfba8812f1f471bd924d05038f4f7df64d38 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 CFLAGS := -Wall -g -O1
 
-COMMON_SRC = gltest.cpp glwindow.cpp
+COMMON_SRC = gltest.cpp glwindow.cpp glutil.cpp
 COMMON_HDR = glwindow.h glutil.h
 COMMON_LD  = -lX11 -lboost_program_options
 

diff --git a/glutil.cpp b/glutil.cpp
new file mode 100644 (file)
index 0000000..0da85d5
--- /dev/null
+++ b/glutil.cpp
@@ -0,0 +1,48 @@
+/* gltest - small OpenGL tearing test program
+ * Copyright (C) 2012-2013 Ralf Jung <post@ralfj.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include "glutil.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+static const char *glErrorToString(GLenum e)
+{
+#define CASE(name) case name: return #name
+       switch (e) {
+               CASE(GL_NO_ERROR);
+               CASE(GL_INVALID_ENUM);
+               CASE(GL_INVALID_VALUE);
+               CASE(GL_INVALID_OPERATION);
+#ifndef CON_GLES2
+               CASE(GL_STACK_OVERFLOW);
+               CASE(GL_STACK_UNDERFLOW);
+#endif
+               CASE(GL_OUT_OF_MEMORY);
+               default: return "<unknown>";
+       }
+#undef CASE
+}
+
+void checkGlError(const char *what)
+{
+       GLenum e = glGetError();
+       if (e == GL_NO_ERROR) return;
+       fprintf(stderr, "GL error %d (%s): %s\n", e, glErrorToString(e), what);
+       exit(1);
+}

diff --git a/glutil.h b/glutil.h
index 688ee2995d46311b25c0c15cc69ec9e9fe434109..3c1a6d2058f5b0565285dec3e02cbd97f20a708c 100644 (file)
--- a/glutil.h
+++ b/glutil.h
@@ -29,5 +29,6 @@ typedef T_proc (*T_glGetProcAddress)(char const *  procname);
 void resolveFunctionPointers(T_glGetProcAddress p_glGetProcAddress);
 
 /* The actual utility functions */
+void checkGlError(const char *what);
 void initialise2dProjection();
 void drawQuad(GLfloat red, GLfloat green, GLfloat blue, GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2);

diff --git a/glutil_gl2.cpp b/glutil_gl2.cpp
index 666ede9b5fd074c2dfe089c86b9a7321c3b438bb..68a789b661ce65d8af5cc410482729c1700938d0 100644 (file)
--- a/glutil_gl2.cpp
+++ b/glutil_gl2.cpp
@@ -16,13 +16,13 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
+#include "glutil.h"
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string>
 #include <sstream>
 
-#include "glutil.h"
-
 // extension functions we use
 typedef GLuint (*GLCREATESHADERPROC) (GLenum type);
 typedef void (*GLGETSHADERIVPROC) (GLuint shader, GLenum pname, GLint *params);
@@ -127,32 +127,6 @@ void resolveFunctionPointers(T_glGetProcAddress p_glGetProcAddress)
        p_glDeleteBuffers = (GLDELETEBUFFERSPROC)resolveFunctionPointer(p_glGetProcAddress, "glDeleteBuffers");
 }
 
-static const char *glErrorToString(GLenum e)
-{
-#define CASE(name) case name: return #name
-       switch (e) {
-               CASE(GL_NO_ERROR);
-               CASE(GL_INVALID_ENUM);
-               CASE(GL_INVALID_VALUE);
-               CASE(GL_INVALID_OPERATION);
-#ifndef CON_GLES2
-               CASE(GL_STACK_OVERFLOW);
-               CASE(GL_STACK_UNDERFLOW);
-#endif
-               CASE(GL_OUT_OF_MEMORY);
-               default: return "<unknown>";
-       }
-#undef CASE
-}
-
-static void checkGlError(const char *what)
-{
-       GLenum e = glGetError();
-       if (e == GL_NO_ERROR) return;
-       fprintf(stderr, "GL error %d (%s): %s\n", e, glErrorToString(e), what);
-       exit(1);
-}
-
 // shaders
 static const char *vertex_shader_source =
 "#version 100 \n\