地形能显示出来了

但一旦显示出来模型就无法显示

FinalProject/sceneviewer.cpp

@@ -75,6 +75,8 @@ void SceneViewer::initializeGL() {
     vertexShader_sky.dispose();
     fragmentShader_sky.dispose();
 
+
+    terrainShader.ensureInitialized();
     VertexShader vertexShader_ter("./temp/shaders/terrainShader.vs");
     FragmentShader fragmentShader_ter("./temp/shaders/terrainShader.fs");
     terrainShader.attachShader(vertexShader_ter);
@@ -107,34 +109,32 @@ void SceneViewer::paintGL() {
     // Set view and projection matrices
     glm::mat4 view = _camera.viewMatrix();
     glm::mat4 projection = glm::perspective(glm::radians(_camera.zoomVal()), (float)width() / (float)height(), 0.1f, 100.0f);
-    /*_shaderProgram.setUniform("view", view);
+    _shaderProgram.setUniform("view", view);
     _shaderProgram.setUniform("projection", projection);
 
     for (auto object : _objects) {
         object.render(_shaderProgram);
-    }*/
+    }
 
     _shaderProgram.unbind();
 
-    terrainShader.bind();
+    //terrainShader.bind();
-    glm::mat4 Model = glm::mat4(1.0f);
+    //glm::mat4 Model = glm::mat4(1.0f);
-    Model = glm::translate(Model, glm::vec3(0.0f, 0.0f, -2.0f));
+    //Model = glm::translate(Model, glm::vec3(0.0f, 0.0f, -2.0f));
-    terrainShader.setUniform("view", view);
+    //terrainShader.setUniform("view", view);
-    terrainShader.setUniform("projection", projection);
+    //terrainShader.setUniform("projection", projection);
-    terrainShader.setUniform("model", Model);
+    //terrainShader.setUniform("model", Model);
-    terrainShader.setUniform("dep", 0);
+    //terrainShader.setUniform("texture1", 2);
-    terrainShader.setUniform("tex1", 1);
+    //ter->render();
-    terrainShader.setUniform("tex2", 2);
+    //terrainShader.unbind();
-    ter->render();
-    terrainShader.unbind();
 
 
-    /*skyShader.bind();
+    skyShader.bind();
     view = glm::mat4(glm::mat3(view));
     skyShader.setUniform("view", view);
     skyShader.setUniform("projection", projection);
     sky->render();
-    skyShader.unbind();*/
+    skyShader.unbind();
 
 
 }

FinalProject/terrain.cpp

@@ -7,50 +7,98 @@
 Terrain::Terrain(int rows, int cols):row_num(rows),col_num(cols) {
     Vertex.clear();
     Indicess.clear(); 
-    float x = -50, z = -50;
+    int imgW, imgH, imgChannel;
 
-    for (int i = 0; i < rows; i++) {
+    unsigned char* data = stbi_load("D:/ProgrammingFile/SceneEditor/terrain/heightmap.jpg", &imgW, &imgH, &imgChannel, 1);
-        x = -5;
-        for (int j = 0; j < cols; j++) {
-            Vertex.push_back(x);
-            Vertex.push_back(0);
-            Vertex.push_back(z);
-            Vertex.push_back(1.0f / cols * j);
-            Vertex.push_back(1 - i * 1.0f / rows);
-            x += 0.1;
-        }
-        z += 0.1;
-    }
 
-    for (int i = 1; i < rows; i++) {
-        for (int j = 1; j < cols; j++) {
-            Indicess.push_back((i - 1) * cols + j - 1);
-            Indicess.push_back((i - 1) * cols + j);
-            Indicess.push_back(i * cols + j - 1);
 
-            Indicess.push_back(i * cols + j - 1);
+    int index1 = 0, index = 0;
-            Indicess.push_back((i - 1) * cols + j);
+    float xrate = imgW / 2.0f;
-            Indicess.push_back(i * cols + j);
+    float rrate = imgH / 2.0f;
+
+    if (data) {
+        for (int r = 0; r < imgH; r++)
+        {
+            for (int c = 0; c < imgW; c++)
+            {
+                //生成顶点数组, 坐标按照三角网格处理 GL_TRIGANLES
+                index1 = r * imgW + c;
+                Vertex.push_back((c - xrate) / xrate);
+                Vertex.push_back(data[index1] / 255.0f);
+                Vertex.push_back((r - rrate) / rrate);
+                //顶点颜色
+                Vertex.push_back(1.0f);
+                Vertex.push_back(0.0f);
+                Vertex.push_back(0.0f);
+                //纹理坐标
+                Vertex.push_back((c - xrate) / imgW);
+                Vertex.push_back((r - rrate) / imgH);
             }
         }
+        imgH -= 1;
+        int iW = imgW - 1;
+        for (int r = 0; r < imgH; r++)
+        {
+            for (int c = 0; c < iW; c++)
+            {
 
-    tex1 = loadTexture("D:/ProgrammingFile/SceneEditor/terrain/rock.jpg");
+                index1 = r * imgW + c;
-    tex2 = loadTexture("D:/ProgrammingFile/SceneEditor/terrain/water.jpg");
+                index = (r + 1) * imgW + c;
-    dep = loadTexture("D:/ProgrammingFile/SceneEditor/terrain/heightmap.png");
+                Indicess.push_back(index1);
+                Indicess.push_back(index1 + 1);
+                Indicess.push_back(index + 1);
 
-    OPENGL_EXTRA_FUNCTIONS->glGenVertexArrays(1, &TerrainVAO);
+                Indicess.push_back(index1);
-    OPENGL_EXTRA_FUNCTIONS->glGenBuffers(1, &TerrainVBO);
+                Indicess.push_back(index);
-    OPENGL_EXTRA_FUNCTIONS->glBindVertexArray(TerrainVAO);
+                Indicess.push_back(index + 1);
-    OPENGL_EXTRA_FUNCTIONS->glBindBuffer(GL_ARRAY_BUFFER, TerrainVBO);
+
-    OPENGL_EXTRA_FUNCTIONS->glBufferData(GL_ARRAY_BUFFER, sizeof(Vertex), &Vertex, GL_STATIC_DRAW);
+            }
+        }
+    }
+    stbi_image_free(data);
+    
+
+    OPENGL_EXTRA_FUNCTIONS->glGenVertexArrays(1, &VAO);
+    OPENGL_EXTRA_FUNCTIONS->glGenBuffers(1, &VBO);
+    OPENGL_EXTRA_FUNCTIONS->glGenBuffers(1, &EBO);
+
+    OPENGL_EXTRA_FUNCTIONS->glBindVertexArray(VAO);
+
+    OPENGL_EXTRA_FUNCTIONS->glBindBuffer(GL_ARRAY_BUFFER, VBO);
+    OPENGL_EXTRA_FUNCTIONS->glBufferData(GL_ARRAY_BUFFER, Vertex.size() * sizeof(float), &Vertex[0], GL_STATIC_DRAW);
+
+    OPENGL_EXTRA_FUNCTIONS->glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
+    OPENGL_EXTRA_FUNCTIONS->glBufferData(GL_ELEMENT_ARRAY_BUFFER, Indicess.size() * sizeof(unsigned int), &Indicess[0], GL_STATIC_DRAW);
+
+    OPENGL_EXTRA_FUNCTIONS->glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void*)0);
     OPENGL_EXTRA_FUNCTIONS->glEnableVertexAttribArray(0);
-    OPENGL_EXTRA_FUNCTIONS->glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), (void*)0);
+    // color attribute
+    OPENGL_EXTRA_FUNCTIONS->glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void*)(3 * sizeof(float)));
+    OPENGL_EXTRA_FUNCTIONS->glEnableVertexAttribArray(1);
+    // texture coord attribute
+    OPENGL_EXTRA_FUNCTIONS->glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void*)(6 * sizeof(float)));
+    OPENGL_EXTRA_FUNCTIONS->glEnableVertexAttribArray(2);
+
+    OPENGL_EXTRA_FUNCTIONS->glBindBuffer(GL_ARRAY_BUFFER, 0);
+    OPENGL_EXTRA_FUNCTIONS->glBindVertexArray(0);
+
+    //textureID = loadTexture2(texName, GL_REPEAT, GL_REPEAT, GL_LINEAR_MIPMAP_LINEAR, GL_LINEAR);
+    tex = loadTexture("D:/ProgrammingFile/SceneEditor/terrain/rock.jpg");
+
 }
 
 unsigned int Terrain::loadTexture(std::string path) {
     unsigned int textureID;
     OPENGL_FUNCTIONS->glGenTextures(1, &textureID);
     OPENGL_FUNCTIONS->glBindTexture(GL_TEXTURE_2D, textureID);
+
+    // Set the texture wrapping parameters
+    OPENGL_FUNCTIONS->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);	// Set texture wrapping to GL_REPEAT (usually basic wrapping method)
+    OPENGL_FUNCTIONS->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+    // Set texture filtering parameters
+    OPENGL_FUNCTIONS->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    OPENGL_FUNCTIONS->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
     stbi_set_flip_vertically_on_load(true);
 
     int width, height, nrChannels;
@@ -83,15 +131,10 @@ unsigned int Terrain::loadTexture(std::string path) {
 void Terrain::render() {
     OPENGL_EXTRA_FUNCTIONS->glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
     OPENGL_EXTRA_FUNCTIONS->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
-    OPENGL_EXTRA_FUNCTIONS->glActiveTexture(GL_TEXTURE0);
-    OPENGL_EXTRA_FUNCTIONS->glBindTexture(GL_TEXTURE_2D, dep);
-    OPENGL_EXTRA_FUNCTIONS->glActiveTexture(GL_TEXTURE1);
-    OPENGL_EXTRA_FUNCTIONS->glBindTexture(GL_TEXTURE_2D, tex1);
     OPENGL_EXTRA_FUNCTIONS->glActiveTexture(GL_TEXTURE2);
-    OPENGL_EXTRA_FUNCTIONS->glBindTexture(GL_TEXTURE_2D, tex2);
+    OPENGL_EXTRA_FUNCTIONS->glBindTexture(GL_TEXTURE_2D, tex);
 
-    OPENGL_EXTRA_FUNCTIONS->glBindVertexArray(TerrainVAO);
+    OPENGL_EXTRA_FUNCTIONS->glBindVertexArray(VAO);
-    OPENGL_EXTRA_FUNCTIONS->glDrawElements(GL_TRIANGLES, Indicess.size(), GL_UNSIGNED_SHORT, &Indicess.front());
+    OPENGL_EXTRA_FUNCTIONS->glDrawElements(GL_TRIANGLES, Indicess.size(), GL_UNSIGNED_INT, 0);
 
 }

FinalProject/terrain.h

@@ -9,10 +9,10 @@ class Terrain {
 private:
     std::vector<float> Vertex;
     std::vector<unsigned int> Indicess;
-    unsigned int TerrainVAO, TerrainVBO;
+    unsigned int VAO, VBO, EBO;
     int row_num, col_num;
 public:
-    unsigned int dep, tex1, tex2;
+    unsigned int dep, tex;
     Terrain(int rows = 200, int cols = 200);
     void render();
     unsigned int loadTexture(std::string path);