编译使用OpenGL的代码时找不到libGLESv2.dll

Question

I am trying to learn about using OpenGL with the 4th edition of OpenGL Super Bible, but whenever I try to copy one of the example codes in Visual Studio 2010, I get a "Open_GL.exe -System Error: The program can't start because libGLESv2.dll is missing from your computer". I do have this .dll somewhere on my computer, but don't know how to make it available towards VS. The pre-built binaries on the site do work however.

The code I used, for reference:

// Block.cpp
// OpenGL SuperBible, Chapter 1
// Demonstrates an assortment of basic 3D concepts
// Program by Richard S. Wright Jr.

#include "../../shared/gltools.h"   // OpenGL toolkit
#include "../../shared/math3d.h"
#include <math.h>

// Keep track of effects step
int nStep = 0;


// Lighting data
GLfloat lightAmbient[] = { 0.2f, 0.2f, 0.2f, 1.0f };
GLfloat lightDiffuse[] = { 0.7f, 0.7f, 0.7f, 1.0f };
GLfloat lightSpecular[] = { 0.9f, 0.9f, 0.9f };
GLfloat materialColor[] = { 0.8f, 0.0f, 0.0f };
GLfloat vLightPos[] = { -80.0f, 120.0f, 100.0f, 0.0f };
GLfloat ground[3][3] = { { 0.0f, -25.0f, 0.0f },
                    { 10.0f, -25.0f, 0.0f },
                    { 10.0f, -25.0f, -10.0f } };

GLuint textures[4];





// Called to draw scene
void RenderScene(void)
{
M3DMatrix44f mCubeTransform;
M3DVector4f pPlane;


// Clear the window with current clearing color
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glShadeModel(GL_SMOOTH);
glEnable(GL_NORMALIZE);

glPushMatrix();

// Draw plane that the cube rests on
glDisable(GL_LIGHTING);
if(nStep == 5)
    {
    glColor3ub(255,255,255);
    glEnable(GL_TEXTURE_2D);
    glBindTexture(GL_TEXTURE_2D, textures[0]);
    glBegin(GL_QUADS);
        glTexCoord2f(0.0f, 0.0f);
        glVertex3f(-100.0f, -25.3f, -100.0f);
        glTexCoord2f(0.0f, 1.0f);
        glVertex3f(-100.0f, -25.3f, 100.0f);        
        glTexCoord2f(1.0f, 1.0f);
        glVertex3f(100.0f,  -25.3f, 100.0f);
        glTexCoord2f(1.0f, 0.0f);
        glVertex3f(100.0f,  -25.3f, -100.0f);
    glEnd();
    }
else
    {
    glColor3f(0.0f, 0.0f, 0.90f); // Blue
    glBegin(GL_QUADS);
        glVertex3f(-100.0f, -25.3f, -100.0f);
        glVertex3f(-100.0f, -25.3f, 100.0f);        
        glVertex3f(100.0f,  -25.3f, 100.0f);
        glVertex3f(100.0f,  -25.3f, -100.0f);
    glEnd();
    }


// Set drawing color to Red
glColor3f(1.0f, 0.0f, 0.0f);

// Enable, disable lighting
if(nStep > 2)
    {
    glEnable(GL_DEPTH_TEST);
    glDepthFunc(GL_LEQUAL);
    glEnable(GL_COLOR_MATERIAL);

    glLightfv(GL_LIGHT0, GL_AMBIENT, lightAmbient);
    glLightfv(GL_LIGHT0, GL_DIFFUSE, lightDiffuse);
    glLightfv(GL_LIGHT0, GL_SPECULAR, lightSpecular);
    glEnable(GL_LIGHTING);
    glEnable(GL_LIGHT0);
    glMaterialfv(GL_FRONT, GL_SPECULAR,lightSpecular);
    glMaterialfv(GL_FRONT, GL_AMBIENT_AND_DIFFUSE, materialColor);
    glMateriali(GL_FRONT, GL_SHININESS,128);
    }

// Move the cube slightly forward and to the left
glTranslatef(-10.0f, 0.0f, 10.0f);

switch(nStep)
    {
    // Just draw the wire framed cube
    case 0:
        glutWireCube(50.0f);
        break;

    // Same wire cube with hidden line removal simulated
    case 1:
        // Front Face (before rotation)
        glBegin(GL_LINES);
            glVertex3f(25.0f,25.0f,25.0f);
            glVertex3f(25.0f,-25.0f,25.0f);

            glVertex3f(25.0f,-25.0f,25.0f);
            glVertex3f(-25.0f,-25.0f,25.0f);

            glVertex3f(-25.0f,-25.0f,25.0f);
            glVertex3f(-25.0f,25.0f,25.0f);

            glVertex3f(-25.0f,25.0f,25.0f);
            glVertex3f(25.0f,25.0f,25.0f);
        glEnd();

        // Top of cube
        glBegin(GL_LINES);
            // Front Face
            glVertex3f(25.0f,25.0f,25.0f);
            glVertex3f(25.0f,25.0f,-25.0f);

            glVertex3f(25.0f,25.0f,-25.0f);
            glVertex3f(-25.0f,25.0f,-25.0f);

            glVertex3f(-25.0f,25.0f,-25.0f);
            glVertex3f(-25.0f,25.0f,25.0f);

            glVertex3f(-25.0f,25.0f,25.0f);
            glVertex3f(25.0f,25.0f,25.0f);
        glEnd();

        // Last two segments for effect
        glBegin(GL_LINES);
            glVertex3f(25.0f,25.0f,-25.0f);
            glVertex3f(25.0f,-25.0f,-25.0f);

            glVertex3f(25.0f,-25.0f,-25.0f);
            glVertex3f(25.0f,-25.0f,25.0f);
        glEnd();

        break;

    // Uniform colored surface, looks 2D and goofey
    case 2:
        glutSolidCube(50.0f);
        break;

    case 3:
        glutSolidCube(50.0f);
        break;

    // Draw a shadow with some lighting
    case 4:
        glGetFloatv(GL_MODELVIEW_MATRIX, mCubeTransform);
        glutSolidCube(50.0f);
        glPopMatrix();

        // Disable lighting, we'll just draw the shadow as black
        glDisable(GL_LIGHTING);

        glPushMatrix();

        m3dGetPlaneEquation(pPlane, ground[0], ground[1], ground[2]);
        m3dMakePlanarShadowMatrix(mCubeTransform, pPlane, vLightPos);
        //MakeShadowMatrix(ground, lightpos, cubeXform);
        glMultMatrixf(mCubeTransform);

        glTranslatef(-10.0f, 0.0f, 10.0f);          

        // Set drawing color to Black
        glColor3f(0.0f, 0.0f, 0.0f);

        glutSolidCube(50.0f);
        break;

    case 5:
        glColor3ub(255,255,255);
        glGetFloatv(GL_MODELVIEW_MATRIX, mCubeTransform);

        // Front Face (before rotation)
        glBindTexture(GL_TEXTURE_2D, textures[1]);
        glBegin(GL_QUADS);
            glTexCoord2f(1.0f, 1.0f);
            glVertex3f(25.0f,25.0f,25.0f);
            glTexCoord2f(1.0f, 0.0f);
            glVertex3f(25.0f,-25.0f,25.0f);
            glTexCoord2f(0.0f, 0.0f);
            glVertex3f(-25.0f,-25.0f,25.0f);
            glTexCoord2f(0.0f, 1.0f);
            glVertex3f(-25.0f,25.0f,25.0f);
        glEnd();

        // Top of cube
        glBindTexture(GL_TEXTURE_2D, textures[2]);
        glBegin(GL_QUADS);
            // Front Face
            glTexCoord2f(0.0f, 0.0f);
            glVertex3f(25.0f,25.0f,25.0f);
            glTexCoord2f(1.0f, 0.0f);
            glVertex3f(25.0f,25.0f,-25.0f);
            glTexCoord2f(1.0f, 1.0f);
            glVertex3f(-25.0f,25.0f,-25.0f);
            glTexCoord2f(0.0f, 1.0f);
            glVertex3f(-25.0f,25.0f,25.0f);
        glEnd();

        // Last two segments for effect
        glBindTexture(GL_TEXTURE_2D, textures[3]);
        glBegin(GL_QUADS);
            glTexCoord2f(1.0f, 1.0f);
            glVertex3f(25.0f,25.0f,-25.0f);
            glTexCoord2f(1.0f, 0.0f);
            glVertex3f(25.0f,-25.0f,-25.0f);
            glTexCoord2f(0.0f, 0.0f);
            glVertex3f(25.0f,-25.0f,25.0f);
            glTexCoord2f(0.0f, 1.0f);
            glVertex3f(25.0f,25.0f,25.0f);
        glEnd();


        glPopMatrix();

        // Disable lighting, we'll just draw the shadow as black
        glDisable(GL_LIGHTING);
        glDisable(GL_TEXTURE_2D);

        glPushMatrix();

        m3dGetPlaneEquation(pPlane, ground[0], ground[1], ground[2]);
        m3dMakePlanarShadowMatrix(mCubeTransform, pPlane, vLightPos);
        glMultMatrixf(mCubeTransform);          

        glTranslatef(-10.0f, 0.0f, 10.0f);          

        // Set drawing color to Black
        glColor3f(0.0f, 0.0f, 0.0f);
        glutSolidCube(50.0f);
        break;

    }

glPopMatrix();

// Flush drawing commands
glutSwapBuffers();
}

// This function does any needed initialization on the rendering
// context. 
void SetupRC()
{
    GLbyte *pBytes;
    GLint nWidth, nHeight, nComponents;
    GLenum format;

// Black background
glClearColor(0.0f, 0.0f, 0.0f, 1.0f );

    glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE, GL_MODULATE);
    glGenTextures(4, textures);

// Load the texture objects
    pBytes = gltLoadTGA("floor.tga", &nWidth, &nHeight, &nComponents, &format);
    glBindTexture(GL_TEXTURE_2D, textures[0]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexImage2D(GL_TEXTURE_2D,0,nComponents,nWidth, nHeight, 0,
    format, GL_UNSIGNED_BYTE, pBytes);
free(pBytes);

pBytes = gltLoadTGA("Block4.tga", &nWidth, &nHeight, &nComponents, &format);
    glBindTexture(GL_TEXTURE_2D, textures[1]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexImage2D(GL_TEXTURE_2D,0,nComponents,nWidth, nHeight, 0,
    format, GL_UNSIGNED_BYTE, pBytes);
free(pBytes);

pBytes = gltLoadTGA("block5.tga", &nWidth, &nHeight, &nComponents, &format);
    glBindTexture(GL_TEXTURE_2D, textures[2]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexImage2D(GL_TEXTURE_2D,0,nComponents,nWidth, nHeight, 0,
    format, GL_UNSIGNED_BYTE, pBytes);
free(pBytes);

pBytes = gltLoadTGA("block6.tga", &nWidth, &nHeight, &nComponents, &format);
    glBindTexture(GL_TEXTURE_2D, textures[3]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexImage2D(GL_TEXTURE_2D,0,nComponents,nWidth, nHeight, 0,
    format, GL_UNSIGNED_BYTE, pBytes);
free(pBytes);
    }

void KeyPressFunc(unsigned char key, int x, int y)
{
if(key == 32)
    {
    nStep++;

    if(nStep > 5)
        nStep = 0;
    }

// Refresh the Window
glutPostRedisplay();
}


void ChangeSize(int w, int h)
{
// Calculate new clipping volume
GLfloat windowWidth;
GLfloat windowHeight;

// Prevent a divide by zero, when window is too short
// (you cant make a window of zero width).
if(h == 0)
    h = 1;

// Keep the square square
if (w <= h) 
    {
    windowHeight = 100.0f*(GLfloat)h/(GLfloat)w;
    windowWidth = 100.0f;
    }
else 
    {
    windowWidth = 100.0f*(GLfloat)w/(GLfloat)h;
    windowHeight = 100.0f;
    }

    // Set the viewport to be the entire window
    glViewport(0, 0, w, h);

    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();

// Set the clipping volume
glOrtho(-100.0f, windowWidth, -100.0f, windowHeight, -200.0f, 200.0f);

    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();

glLightfv(GL_LIGHT0,GL_POSITION, vLightPos);

glRotatef(30.0f, 1.0f, 0.0f, 0.0f);
glRotatef(330.0f, 0.0f, 1.0f, 0.0f);
}

int main(int argc, char* argv[])
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA | GLUT_DEPTH);
glutInitWindowSize(800, 600);
glutCreateWindow("3D Effects Demo");
glutReshapeFunc(ChangeSize);
glutKeyboardFunc(KeyPressFunc);
glutDisplayFunc(RenderScene);

SetupRC();

glutMainLoop();
glDeleteTextures(4,textures);
return 0;
}

Answer 1

I do have this .dll somewhere on my computer

libGLESv2.dll sounds suspiciously like an implementation of OpenGL ES 2.0 . Which will not execute your code, since your code is written for desktop OpenGL.

In short, you are linking to the wrong library. On Windows, you should be linking to OpenGL32.lib .