- <tt>i I </tt> Show info
- <tt>p P </tt> Toggle perspective or orthographic projection
- <tt>r R </tt> Toggle fixed or animated rotation around model X-axis
+ - <tt>s S </tt> Toggle toggle fixed function or shader render path
+ - <tt>n N </tt> Toggle visualization of object's normal vectors
- <tt>= + </tt> Increase \a slices
- <tt>- _ </tt> Decreate \a slices
- <tt>, < </tt> Decreate \a stacks
#define APIENTRY
#endif
-#ifndef GL_VERSION_1_5
-typedef void (APIENTRY *PFNGLGENBUFFERSPROC) (GLsizei n, GLuint *buffers);
-typedef void (APIENTRY *PFNGLBINDBUFFERPROC) (GLenum target, GLuint buffer);
-typedef void (APIENTRY *PFNGLBUFFERDATAPROC) (GLenum target, ourGLsizeiptr size, const GLvoid *data, GLenum usage);
-#endif
#ifndef GL_VERSION_2_0
typedef GLuint (APIENTRY *PFNGLCREATESHADERPROC) (GLenum type);
typedef void (APIENTRY *PFNGLSHADERSOURCEPROC) (GLuint shader, GLsizei count, const ourGLchar **string, const GLint *length);
gl_GetUniformLocation = (PFNGLGETUNIFORMLOCATIONPROC) glutGetProcAddress ("glGetUniformLocation");
gl_UniformMatrix4fv = (PFNGLUNIFORMMATRIX4FVPROC) glutGetProcAddress ("glUniformMatrix4fv");
gl_UniformMatrix3fv = (PFNGLUNIFORMMATRIX3FVPROC) glutGetProcAddress ("glUniformMatrix3fv");
+ if (!gl_CreateShader || !gl_ShaderSource || !gl_CompileShader || !gl_CreateProgram || !gl_AttachShader || !gl_LinkProgram || !gl_UseProgram || !gl_GetShaderiv || !gl_GetShaderInfoLog || !gl_GetProgramiv || !gl_GetProgramInfoLog || !gl_GetAttribLocation || !gl_GetUniformLocation || !gl_UniformMatrix4fv || !gl_UniformMatrix3fv)
+ {
+ fprintf (stderr, "glCreateShader, glShaderSource, glCompileShader, glCreateProgram, glAttachShader, glLinkProgram, glUseProgram, glGetShaderiv, glGetShaderInfoLog, glGetProgramiv, glGetProgramInfoLog, glGetAttribLocation, glGetUniformLocation, glUniformMatrix4fv or gl_UniformMatrix3fv not found");
+ exit(1);
+ }
}
const ourGLchar *vertexShaderSource[] = {
static void drawWireCone(void) { glutWireCone(irad,orad,slices,stacks); } /* irad doubles as base input, and orad as height input */
static void drawSolidCylinder(void) { glutSolidCylinder(irad,orad,slices,stacks); } /* irad doubles as radius input, and orad as height input */
static void drawWireCylinder(void) { glutWireCylinder(irad,orad,slices,stacks); } /* irad doubles as radius input, and orad as height input */
+/* per Glut manpage, it should be noted that the teapot is rendered
+ * with clockwise winding for front facing polygons...
+ * Same for the teacup and teaspoon
+ */
static void drawSolidTeapot(void)
-{
- /* per Glut manpage, it should be noted that the teapot is rendered
- * with clockwise winding for front facing polygons...
- */
- glFrontFace(GL_CW);
- glutSolidTeapot(orad); /* orad doubles as size input */
- glFrontFace(GL_CCW);
-}
+{ glFrontFace(GL_CW); glutSolidTeapot(orad); glFrontFace(GL_CCW); /* orad doubles as size input */}
static void drawWireTeapot(void)
-{
- /* per Glut manpage, it should be noted that the teapot is rendered
- * with clockwise winding for front facing polygons...
- */
- glFrontFace(GL_CW);
- glutWireTeapot(orad); /* orad doubles as size input */
- glFrontFace(GL_CCW);
-}
+{ glFrontFace(GL_CW); glutWireTeapot(orad); glFrontFace(GL_CCW); /* orad doubles as size input */}
+static void drawSolidTeacup(void)
+{ glFrontFace(GL_CW); glutSolidTeacup(orad); glFrontFace(GL_CCW); /* orad doubles as size input */}
+static void drawWireTeacup(void)
+{ glFrontFace(GL_CW); glutWireTeacup(orad); glFrontFace(GL_CCW); /* orad doubles as size input */}
+static void drawSolidTeaspoon(void)
+{ glFrontFace(GL_CW); glutSolidTeaspoon(orad); glFrontFace(GL_CCW); /* orad doubles as size input */}
+static void drawWireTeaspoon(void)
+{ glFrontFace(GL_CW); glutWireTeaspoon(orad); glFrontFace(GL_CCW); /* orad doubles as size input */}
#define RADIUSFAC 0.70710678118654752440084436210485f
ENTRY (Icosahedron,GEO_NO_SIZE),
ENTRY (SierpinskiSponge,GEO_SCALE),
ENTRY (Teapot,GEO_SIZE),
+ ENTRY (Teacup,GEO_SIZE),
+ ENTRY (Teaspoon,GEO_SIZE),
ENTRY (Torus,GEO_INNER_OUTER_RAD),
ENTRY (Sphere,GEO_RAD),
ENTRY (Cone,GEO_BASE_HEIGHT),
gl_UseProgram (program);
glutSetVertexAttribCoord3(attribute_fg_coord);
glutSetVertexAttribNormal(attribute_fg_normal);
+ /* There is also a glutSetVertexAttribTexCoord2, which is used only when drawing the teapot, teacup or teaspoon */
gl_matrix_mode(GL_PROJECTION);
gl_load_identity();