我最近一直在学习关于vertex coloring。当我使用glut/OpenGL时,程序运行正常。但是,我想使用SFML作为应用程序,因此我试图将this site上的代码更改为SFML可以使用的代码。但是,整个四合一的作品只有纯色。每顶点着色只产生一个白色正方形。下面是我的再现问题小,最小的例子:C++/OpenGL/SFML顶点着色
#include <windows.h>
#include <SFML/Graphics.hpp>
#include <gl/gl.h>
#include <gl/glu.h>
class Scene {
public:
void resize(int w, int h) {
// OpenGL Reshape
glViewport(0, 0, w, h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(120.0, (GLdouble)w/(GLdouble)h, 0.5, 500.0);
glMatrixMode(GL_MODELVIEW);
}
};
int main() {
sf::RenderWindow window(sf::VideoMode(800, 600, 32), "Test");
///Setup the scene, materials, lighting
Scene scene;
scene.resize(800,600);
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHTING);
glColorMaterial(GL_FRONT_AND_BACK, GL_EMISSION);
glEnable(GL_COLOR_MATERIAL);
glShadeModel(GL_FLAT);
glEnable(GL_LIGHT0);
float XL = .5, YL = .1, ZL = 1;
GLfloat ambientLight[] = { 0.2f, 0.2f, 0.2f, 1.0f };
GLfloat diffuseLight[] = { 0.8f, 0.8f, 0.8, 1.0f };
GLfloat specularLight[] = { 0.5f, 0.5f, 0.5f, 1.0f };
GLfloat lightpos[] = {XL, YL, ZL, 0.};
glLightfv(GL_LIGHT0, GL_AMBIENT, ambientLight);
glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuseLight);
glLightfv(GL_LIGHT0, GL_SPECULAR, specularLight);
glLightfv(GL_LIGHT0, GL_POSITION, lightpos);
///Start loop
while(window.isOpen()) {
sf::Event event;
while(window.pollEvent(event)) {
if(event.type == sf::Event::Closed)
window.close();
}
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(50.0, 1.0, 1.0, 50);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(1, 0, 1, 0, 0, 0, 0, 1, 0);
glColor3f(1, 0, 0);
glBegin(GL_QUADS);
// glColor3f(1,0,0); //red
glVertex3f(-0.5, -0.5, 0.0);
// glColor3f(0,1,0); //green
glVertex3f(-0.5, 0.5, 0.0);
// glColor3f(0,0,1); //blue
glVertex3f(0.5, 0.5, 0.0);
// glColor3f(1,1,1); //white
glVertex3f(0.5, -0.5, 0.0);
glEnd();
///Reset env settings for SFML
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
window.display();
}
return 1;
}
这些glColor3f的注释出于某种原因吗? – Tim 2012-08-08 04:26:37
他们代表glColor3fs应该在哪里。不评论它们会产生一个完全白色的正方形,但情况并非如此。 – LucasS 2012-08-08 04:29:51