Added b3Printf, b3Warning and b3Error that can be re-routed to custom handlers.

See in src/Bullet3Common/b3Logging.h for details

btgui/GwenOpenGLTest/premake4.lua

@@ -39,6 +39,8 @@
  		"../OpenGLTrueTypeFont/opengl_fontstashcallbacks.h",
 		"../../src/Bullet3Geometry/b3ConvexHullComputer.cpp",
 		"../../src/Bullet3Geometry/b3ConvexHullComputer.h",
+		"../../src/Bullet3Common/b3Logging.h",
+		"../../src/Bullet3Common/b3Logging.cpp",
 		"../../src/Bullet3Common/b3AlignedAllocator.cpp",
 		"../../src/Bullet3Common/b3Quickprof.cpp",
 		"../../src/Bullet3Common/b3Quickprof.h",

btgui/OpenGLWindow/GLInstancingRenderer.cpp

@@ -180,7 +180,7 @@ struct InternalDataRenderer : public GLInstanceRendererInternalData
 	}
 	void keyboardCallback(unsigned char key, int x, int y)
 	{
-		printf("world\n");
+//		printf("world\n");
 	}
 
 };
@@ -637,7 +637,7 @@ void GLInstancingRenderer::writeTransforms()
 		}
 	} else
 	{
-		printf("ERROR glMapBuffer failed\n");
+		b3Error("ERROR glMapBuffer failed\n");
 	}
 	glUnmapBuffer( GL_ARRAY_BUFFER);
 	//if this glFinish is removed, the animation is not always working/blocks

btgui/OpenGLWindow/LoadShader.cpp

@@ -3,6 +3,7 @@
 #include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include "Bullet3Common/b3Logging.h"
 
 // Load the shader from the source text
 void gltLoadShaderSrc(const char *szShaderSrc, GLuint shader)
@@ -89,8 +90,8 @@ GLuint gltLoadShaderPair(const char *szVertexProg, const char *szFragmentProg)
 								 &actualLen,
 								 infoLog);
 
-		printf("Warning/Error in GLSL shader:\n");
-		printf("%s\n",infoLog);
+		b3Error("Warning/Error in GLSL shader:\n");
+		b3Error("%s\n",infoLog);
 		glDeleteProgram(hReturn);
 		return (GLuint)NULL;
 	}

btgui/OpenGLWindow/Win32OpenGLWindow.cpp

@@ -25,7 +25,7 @@ subject to the following restrictions:
 
 static void printGLString(const char *name, GLenum s) {
     const char *v = (const char *) glGetString(s);
-    printf("GL %s = %s\n", name, v);
+    b3Printf("GL %s = %s\n", name, v);
 }