[技美CG]VS2017 配置 CG/OpenGL环境[开箱可用][新手入门]

VS2017 配置 CG/OpenGL环境

• • 1.安装VS2017-勾选C++
  • 2.安装Cg Toolkit
  • 3.打开需要配置CG的项目(新建一个也行)
  • 4.配置VS2017+CG环境
  • 5.点击本地Windows调试器(运行cg)
  • 6.不推荐方案-VS2017-Nuget包-nupengl插件
  • 7.引用文章:
  • 8.项目地址:

1.安装VS2017-勾选C++

https://visualstudio.microsoft.com/zh-hans/

2.安装Cg Toolkit

http://developer.nvidia.com/object/cg_toolkit.html
安装后，就会生成三个环境变量,CG_BIN_PATH,CG_INC_PATH,CG_LIB_PATH

3.打开需要配置CG的项目(新建一个也行)

例如新建一个项目,参考文章https://blog.csdn.net/zhangci226/article/details/5540153

#include <gl/glut.h>
#include <cg/cg.h>
#include <Cg/cgGL.h>
#include <stdio.h>

int ww = 640, hh = 480;

void render();
void reshape(int w, int h);

static CGcontext   myCgContext;
static CGprofile   myCgVertexProfile;
static CGprofile   myCgFragmentProfile;
static CGprogram   myCgVertexProgram;
static CGprogram   myCgFragmentProgram;
static const char *myProgramName = "Hello CG";
static const char *myVertexProgramFileName = "01vs.cg";
static const char *myVertexProgramName = "vs_main";
static const char *myFragmentProgramFileName = "01fs.cg";
static const char *myFragmentProgramName = "fs_main";

int main(int argc, char** argv) {
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
    glutInitWindowSize(ww, hh);
    glutCreateWindow(myProgramName);
    glutDisplayFunc(render);
    glutReshapeFunc(reshape);
    glEnable(GL_DEPTH_TEST);
    myCgContext = cgCreateContext();
    cgGLSetDebugMode(CG_FALSE);
    cgSetParameterSettingMode(myCgContext, CG_DEFERRED_PARAMETER_SETTING);
    myCgVertexProfile = cgGLGetLatestProfile(CG_GL_VERTEX);
    cgGLSetOptimalOptions(myCgVertexProfile);
    myCgVertexProgram =
        cgCreateProgramFromFile(
            myCgContext,
            /* Cg runtime context */
            CG_SOURCE,
            /* Program in human-readable form */
            myVertexProgramFileName,
            /* Name of file containing program */
            myCgVertexProfile,
            /* Profile: OpenGL ARB vertex program */
            myVertexProgramName,
            /* Entry function name */
            NULL);
    /* No extra compiler options */
    cgGLLoadProgram(myCgVertexProgram);
    myCgFragmentProfile = cgGLGetLatestProfile(CG_GL_FRAGMENT);
    cgGLSetOptimalOptions(myCgFragmentProfile);
    myCgFragmentProgram =
        cgCreateProgramFromFile(
            myCgContext,
            /* Cg runtime context */
            CG_SOURCE,
            /* Program in human-readable form */
            myFragmentProgramFileName,
            /* Name of file containing program */
            myCgFragmentProfile,
            /* Profile: OpenGL ARB vertex program */
            myFragmentProgramName,
            /* Entry function name */
            NULL);
    /* No extra compiler options */
    cgGLLoadProgram(myCgFragmentProgram);
    glutMainLoop();
    return 0;
}
void reshape(int w, int h) {
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluPerspective(45, (float)w / (float)h, 0.1, 100);
    glViewport(0, 0, w, h);
    ww = w;
    hh = h;
}
void render() {
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glClearColor(.0f, .0f, .2f, 1.0f);
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    gluLookAt(.0, .0, 5.0, .0, .0, .0, .0, 1.0, .0);
    static float angle;
    glRotatef(angle, 0.0, 1.0, 0.0);
    cgGLBindProgram(myCgVertexProgram);
    cgGLEnableProfile(myCgVertexProfile);
    cgGLBindProgram(myCgFragmentProgram);
    cgGLEnableProfile(myCgFragmentProfile);
    //将ModelViewProjection矩阵传入shader
    CGparameter mvp = cgGetNamedParameter(myCgVertexProgram, "MVP");
    cgGLSetStateMatrixParameter(mvp, CG_GL_MODELVIEW_PROJECTION_MATRIX, CG_GL_MATRIX_IDENTITY);
    glutSolidTorus(0.3, 1.0, 30, 30);
    cgGLDisableProfile(myCgVertexProfile);
    cgGLDisableProfile(myCgFragmentProfile);
    angle += 0.5;
    if (angle >= 360) angle = 0.0f;
    glutSwapBuffers();
    glutPostRedisplay();
}

还有两个.cg文件:

01fs.cg

float4 fs_main(float4 color: COLOR): COLOR
{
    return color;
}

01vs.cg

struct output
{
    float4 position: POSITION;
    float4 color: COLOR;
};

output vs_main(float4 position: POSITION,float4 color: COLOR,uniform float4x4 MVP){
    output OUT;

    OUT.position = mul(MVP, position);
    OUT.color = position;

    return OUT;
}

4.配置VS2017+CG环境

5.点击本地Windows调试器(运行cg)

6.不推荐方案-VS2017-Nuget包-nupengl插件

7.引用文章:

https://blog.csdn.net/zhangci226/article/details/5540153

8.项目地址:

HelloCG