/*! \file shapes.c
\ingroup demos
This program is a test harness for the various shapes
in OpenGLUT. It may also be useful to see which
parameters control what behavior in the OpenGLUT
objects.
Spinning wireframe and solid-shaded shapes are
displayed. Some parameters can be adjusted.
Keys:
- <tt>Esc </tt> Quit
- <tt>q Q </tt> Quit
- <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
- <tt>. > </tt> Increase \a stacks
- <tt>9 ( </tt> Decreate \a depth (Sierpinski Sponge)
- <tt>0 ) </tt> Increase \a depth (Sierpinski Sponge)
- <tt>up </tt> Increase "outer radius"
- <tt>down </tt> Decrease "outer radius"
- <tt>left </tt> Decrease "inner radius"
- <tt>right</tt> Increase "inner radius"
- <tt>PgUp </tt> Next shape-drawing function
- <tt>PgDn </tt> Prev shape-drawing function
\author Written by Nigel Stewart November 2003
\author Portions Copyright (C) 2004, the OpenGLUT project contributors. <br>
OpenGLUT branched from freeglut in February, 2004.
\image html openglut_shapes.png OpenGLUT Geometric Shapes Demonstration
\include demos/shapes/shapes.c
*/
#include <GL/freeglut.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include "glmatrix.h"
#ifdef _MSC_VER
/* DUMP MEMORY LEAKS */
#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
* GL/glext.h header
*/
#ifndef GL_FRAGMENT_SHADER
#define GL_FRAGMENT_SHADER 0x8B30
#endif
#ifndef GL_VERTEX_SHADER
#define GL_VERTEX_SHADER 0x8B31
#endif
#ifndef GL_COMPILE_STATUS
#define GL_COMPILE_STATUS 0x8B81
#endif
#ifndef GL_LINK_STATUS
#define GL_LINK_STATUS 0x8B82
#endif
#ifndef GL_INFO_LOG_LENGTH
#define GL_INFO_LOG_LENGTH 0x8B84
#endif
typedef ptrdiff_t ourGLsizeiptr;
typedef char ourGLchar;
#ifndef APIENTRY
#define APIENTRY
#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);
typedef void (APIENTRY *PFNGLCOMPILESHADERPROC) (GLuint shader);
typedef GLuint (APIENTRY *PFNGLCREATEPROGRAMPROC) (void);
typedef void (APIENTRY *PFNGLATTACHSHADERPROC) (GLuint program, GLuint shader);
typedef void (APIENTRY *PFNGLLINKPROGRAMPROC) (GLuint program);
typedef void (APIENTRY *PFNGLUSEPROGRAMPROC) (GLuint program);
typedef void (APIENTRY *PFNGLGETSHADERIVPROC) (GLuint shader, GLenum pname, GLint *params);
typedef void (APIENTRY *PFNGLGETSHADERINFOLOGPROC) (GLuint shader, GLsizei bufSize, GLsizei *length, ourGLchar *infoLog);
typedef void (APIENTRY *PFNGLGETPROGRAMIVPROC) (GLenum target, GLenum pname, GLint *params);
typedef void (APIENTRY *PFNGLGETPROGRAMINFOLOGPROC) (GLuint program, GLsizei bufSize, GLsizei *length, ourGLchar *infoLog);
typedef GLint (APIENTRY *PFNGLGETATTRIBLOCATIONPROC) (GLuint program, const ourGLchar *name);
typedef GLint (APIENTRY *PFNGLGETUNIFORMLOCATIONPROC) (GLuint program, const ourGLchar *name);
typedef void (APIENTRY *PFNGLUNIFORMMATRIX4FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
typedef void (APIENTRY *PFNGLUNIFORMMATRIX3FVPROC) (GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
#endif
PFNGLCREATESHADERPROC gl_CreateShader;
PFNGLSHADERSOURCEPROC gl_ShaderSource;
PFNGLCOMPILESHADERPROC gl_CompileShader;
PFNGLCREATEPROGRAMPROC gl_CreateProgram;
PFNGLATTACHSHADERPROC gl_AttachShader;
PFNGLLINKPROGRAMPROC gl_LinkProgram;
PFNGLUSEPROGRAMPROC gl_UseProgram;
PFNGLGETSHADERIVPROC gl_GetShaderiv;
PFNGLGETSHADERINFOLOGPROC gl_GetShaderInfoLog;
PFNGLGETPROGRAMIVPROC gl_GetProgramiv;
PFNGLGETPROGRAMINFOLOGPROC gl_GetProgramInfoLog;
PFNGLGETATTRIBLOCATIONPROC gl_GetAttribLocation;
PFNGLGETUNIFORMLOCATIONPROC gl_GetUniformLocation;
PFNGLUNIFORMMATRIX4FVPROC gl_UniformMatrix4fv;
PFNGLUNIFORMMATRIX3FVPROC gl_UniformMatrix3fv;
void initExtensionEntries(void)
{
gl_CreateShader = (PFNGLCREATESHADERPROC) glutGetProcAddress ("glCreateShader");
gl_ShaderSource = (PFNGLSHADERSOURCEPROC) glutGetProcAddress ("glShaderSource");
gl_CompileShader = (PFNGLCOMPILESHADERPROC) glutGetProcAddress ("glCompileShader");
gl_CreateProgram = (PFNGLCREATEPROGRAMPROC) glutGetProcAddress ("glCreateProgram");
gl_AttachShader = (PFNGLATTACHSHADERPROC) glutGetProcAddress ("glAttachShader");
gl_LinkProgram = (PFNGLLINKPROGRAMPROC) glutGetProcAddress ("glLinkProgram");
gl_UseProgram = (PFNGLUSEPROGRAMPROC) glutGetProcAddress ("glUseProgram");
gl_GetShaderiv = (PFNGLGETSHADERIVPROC) glutGetProcAddress ("glGetShaderiv");
gl_GetShaderInfoLog = (PFNGLGETSHADERINFOLOGPROC) glutGetProcAddress ("glGetShaderInfoLog");
gl_GetProgramiv = (PFNGLGETPROGRAMIVPROC) glutGetProcAddress ("glGetProgramiv");
gl_GetProgramInfoLog = (PFNGLGETPROGRAMINFOLOGPROC) glutGetProcAddress ("glGetProgramInfoLog");
gl_GetAttribLocation = (PFNGLGETATTRIBLOCATIONPROC) glutGetProcAddress ("glGetAttribLocation");
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[] = {
"/**",
" * From the OpenGL Programming wikibook: http://en.wikibooks.org/wiki/GLSL_Programming/GLUT/Smooth_Specular_Highlights",
" * This file is in the public domain.",
" * Contributors: Sylvain Beucler",
" */",
"attribute vec3 fg_coord;",
"attribute vec3 fg_normal;",
"varying vec4 position; /* position of the vertex (and fragment) in world space */",
"varying vec3 varyingNormalDirection; /* surface normal vector in world space */",
"uniform mat4 m, p; /* don't need v, as always identity in our demo */",
"uniform mat3 m_3x3_inv_transp;",
" ",
"void main()",
"{",
" vec4 fg_coord4 = vec4(fg_coord, 1.0);",
" position = m * fg_coord4;",
" varyingNormalDirection = normalize(m_3x3_inv_transp * fg_normal);",
" ",
" mat4 mvp = p*m; /* normally p*v*m */",
" gl_Position = mvp * fg_coord4;",
"}"
};
const ourGLchar *fragmentShaderSource[] = {
"/**",
" * From the OpenGL Programming wikibook: http://en.wikibooks.org/wiki/GLSL_Prog
qt 轻量级GCC编译器IDE （1525个子文件） 
ball.bmp 630B ballmask.bmp 190B
changelog 2KB compat 3B control 724B copyright 3KB mainwindow.cpp 280KB ASFormatter.cpp 232KB SynEdit.cpp 221KB cppparser.cpp 160KB editor.cpp 157KB settings.cpp 142KB astyle_main.cpp 126KB ASBeautifier.cpp 108KB project.cpp 89KB debugger.cpp 74KB ASLocalizer.cpp 64KB cpppreprocessor.cpp 55KB TextPainter.cpp 46KB cpp.cpp 43KB glsl.cpp 43KB codecompletionpopup.cpp 42KB darkfusionstyle.cpp 41KB qconsole.cpp 36KB utils.cpp 34KB TextBuffer.cpp 30KB ASResource.cpp 27KB compiler.cpp 24KB iconsmanager.cpp 24KB colorscheme.cpp 23KB parserutils.cpp 22KB projectcompiler.cpp 22KB gitmanager.cpp 19KB ASEnhancer.cpp 18KB cpptokenizer.cpp 18KB formattergeneralwidget.cpp 18KB searchdialog.cpp 18KB editorcolorschemewidget.cpp 17KB compilermanager.cpp 17KB platform.cpp 16KB searchresultview.cpp 15KB classbrowser.cpp 14KB ojproblemsetmodel.cpp 14KB main.cpp 14KB compilersetoptionwidget.cpp 13KB gdbmiresultparser.cpp 12KB cpprefacter.cpp 12KB editorlist.cpp 12KB asm.cpp 12KB compilerinfo.cpp 12KB settingsdialog.cpp 11KB thememanager.cpp 11KB KeyStrokes.cpp 11KB synexporter.cpp 11KB headercompletionpopup.cpp 10KB environmentfileassociationwidget.cpp 10KB codesnippetsmanager.cpp 9KB projecttemplate.cpp 9KB executablerunner.cpp 9KB projectfileswidget.cpp 8KB newprojectdialog.cpp 8KB synhtmlexporter.cpp 8KB bookmarkmodel.cpp 8KB main.windows.cpp 7KB compilerautolinkwidget.cpp 7KB ojproblemcasesrunner.cpp 7KB toolsgeneralwidget.cpp 7KB environmentshortcutwidget.cpp 7KB settingswidget.cpp 7KB HighlighterManager.cpp 7KB cpudialog.cpp 7KB MiscClasses.cpp 6KB issuestable.cpp 6KB editorgeneralwidget.cpp 6KB main.unix.cpp 6KB functiontooltipwidget.cpp 6KB customfileiconprovider.cpp 6KB MiscProcs.cpp 6KB projectgeneralwidget.cpp 6KB projectcompilerwidget.cpp 5KB gitremotedialog.cpp 5KB synrtfexporter.cpp 5KB linenumbertexteditor.cpp 5KB base.cpp 5KB compileargumentswidget.cpp 5KB filepropertiesdialog.cpp 5KB statementmodel.cpp 5KB projectversioninfowidget.cpp 5KB todoparser.cpp 5KB editorfontwidget.cpp 5KB autolinkmanager.cpp 5KB environmentappearencewidget.cpp 5KB editormiscwidget.cpp 5KB toolsmanager.cpp 4KB shortcutmanager.cpp 4KB debuggeneralwidget.cpp 4KB editorcodecompletionwidget.cpp 4KB systemconsts.cpp 4KB editorclipboardwidget.cpp 4KB gitlogdialog.cpp 4KB共 1525 条
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