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added bunch of error checks to shapes demo

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git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@1345 7f0cb862-5218-0410-a997-914c9d46530a
This commit is contained in:
dcnieho 2012-06-15 05:54:44 +00:00
parent 1bca835536
commit afbdd37121
1 changed files with 24 additions and 0 deletions
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24
freeglut/freeglut/progs/demos/shapes/shapes.c
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@ -50,6 +50,15 @@
#include <crtdbg.h>
#endif
/* report GL errors, if any, to stderr */
void checkError(const char *functionName)
{
GLenum error;
while (( error = glGetError() ) != GL_NO_ERROR) {
fprintf (stderr, "GL error 0x%X detected in %s\n", error, functionName);
}
}
/*
* OpenGL 2+ shader mode needs some function and macro definitions,
* avoiding a dependency on additional libraries like GLEW or the
@ -282,6 +291,7 @@ GLint getAttribOrUniformLocation(const char* name, GLuint program, GLboolean isA
return uniform;
}
checkError ("getAttribOrUniformLocation");
}
GLuint program;
@ -305,12 +315,16 @@ void compileAndCheck(GLuint shader)
fprintf (stderr, "compile log: %s\n", infoLog);
free (infoLog);
}
checkError ("compileAndCheck");
}
GLuint compileShaderSource(GLenum type, GLsizei count, const ourGLchar **string)
{
GLuint shader = gl_CreateShader (type);
gl_ShaderSource (shader, count, string, NULL);
checkError ("compileShaderSource");
compileAndCheck (shader);
return shader;
}
@ -329,6 +343,7 @@ void linkAndCheck(GLuint program)
fprintf (stderr, "link log: %s\n", infoLog);
free (infoLog);
}
checkError ("linkAndCheck");
}
void createProgram(GLuint vertexShader, GLuint fragmentShader)
@ -340,6 +355,9 @@ void createProgram(GLuint vertexShader, GLuint fragmentShader)
if (fragmentShader != 0) {
gl_AttachShader (program, fragmentShader);
}
checkError ("createProgram");
linkAndCheck (program);
}
@ -353,6 +371,8 @@ void initShader(void)
GLuint fragmentShader =
compileShaderSource (GL_FRAGMENT_SHADER, fragmentShaderLines, fragmentShaderSource);
checkError ("initShader - 1");
createProgram (vertexShader, fragmentShader);
gl_UseProgram (program);
@ -370,6 +390,8 @@ void initShader(void)
shaderReady = -1;
else
shaderReady = 1;
checkError ("initShader - 2");
}
/*
@ -627,6 +649,8 @@ static void display(void)
gl_UseProgram (0);
glutSetVertexAttribCoord3(-1);
glutSetVertexAttribNormal(-1);
checkError ("display");
}
else
{