使用vao

main.cpp

@@ -122,8 +122,21 @@ INT WINAPI WinMain(HINSTANCE hinstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
 		printf("load obj model fail\n");
 	}
 
-	/*创建vbo*/
-	GLuint vbo = CreateBufferObject(GL_ARRAY_BUFFER, sizeof(VertexData) * vertexCount, GL_STATIC_DRAW, vertexes);
+
+	/*创建vao*/
+	GLuint vao = CreateVAOWithVBOSettings([&]()->void {
+		/*创建vbo*/
+		GLuint vbo = CreateBufferObject(GL_ARRAY_BUFFER, sizeof(VertexData) * vertexCount, GL_STATIC_DRAW, vertexes);
+
+		glBindBuffer(GL_ARRAY_BUFFER, vbo);
+		glEnableVertexAttribArray(posLocation);
+		glVertexAttribPointer(posLocation, 3, GL_FLOAT, GL_FALSE, sizeof(VertexData), (void*)0);
+		glEnableVertexAttribArray(texcoordLocation);
+		glVertexAttribPointer(texcoordLocation, 2, GL_FLOAT, GL_FALSE, sizeof(VertexData), (void*)(sizeof(float) * 3));
+		glEnableVertexAttribArray(normalLocation);
+		glVertexAttribPointer(normalLocation, 3, GL_FLOAT, GL_FALSE, sizeof(VertexData), (void*)(sizeof(float) * 5));
+		glBindBuffer(GL_ARRAY_BUFFER, 0);
+	});
 
 	/*创建IBO*/
 	GLuint ibo = CreateBufferObject(GL_ELEMENT_ARRAY_BUFFER, sizeof(unsigned int) * indexCount, GL_STATIC_DRAW, indexes);
@@ -131,7 +144,7 @@ INT WINAPI WinMain(HINSTANCE hinstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
 	/*创建纹理*/
 	GLuint mainTexture = CreateTextureFromFile("res/image/niutou.bmp");
 
-	glClearColor(0.1f, 0.1f, 0.1f, 1.0f);
+	GL_CALL(glClearColor(0.1f, 0.4f, 0.7f, 1.0f));
 	glEnable(GL_DEPTH_TEST);
 
 	glViewport(0,0, windowWidth, windowHeight);
@@ -168,15 +181,8 @@ INT WINAPI WinMain(HINSTANCE hinstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
 		glBindTexture(GL_TEXTURE_2D, mainTexture);
 		glUniform1i(textureLocation, 0);
 
-		glBindBuffer(GL_ARRAY_BUFFER, vbo);
-		glEnableVertexAttribArray(posLocation);
-		glVertexAttribPointer(posLocation, 3, GL_FLOAT, GL_FALSE, sizeof(VertexData), (void*)0);
-		glEnableVertexAttribArray(texcoordLocation);
-		glVertexAttribPointer(texcoordLocation, 2, GL_FLOAT, GL_FALSE, sizeof(VertexData), (void*)(sizeof(float) * 3));
-		glEnableVertexAttribArray(normalLocation);
-		glVertexAttribPointer(normalLocation, 3, GL_FLOAT, GL_FALSE, sizeof(VertexData), (void*)(sizeof(float) * 5));
-		glBindBuffer(GL_ARRAY_BUFFER, 0);
 
+		glBindVertexArray(vao);
 
 		model = glm::translate(-1.0f, -0.5f, -3.0f) * glm::rotate(-90.0f, 0.0f, 1.0f, 0.0f)*glm::scale(0.01f, 0.01f, 0.01f);
 		glUniformMatrix4fv(MLocation, 1, GL_FALSE, glm::value_ptr(model));
@@ -199,6 +205,7 @@ INT WINAPI WinMain(HINSTANCE hinstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine
 		glDrawElements(GL_TRIANGLES, indexCount, GL_UNSIGNED_INT, 0);
 		glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
 
+		glBindVertexArray(0);
 		glUseProgram(0);
 	};
 

misc.cpp

@@ -16,6 +16,16 @@ GLuint CreateBufferObject(GLenum bufferType, GLsizeiptr size, GLenum usage, void
 	return object;
 }
 
+GLuint CreateVAOWithVBOSettings(std::function<void()> settings)
+{
+	GLuint vao;
+	glGenVertexArrays(1, &vao);
+	glBindVertexArray(vao);
+	settings();
+	glBindVertexArray(0);
+	return vao;
+}
+
 char* LoadFileContent(const char *path) {
 	FILE* pFile = fopen(path, "rb");
 	if (pFile) {

misc.h

@@ -1,7 +1,10 @@
 #pragma once
 #include "glew.h"
+#include <functional>
 
 GLuint CreateBufferObject(GLenum bufferType, GLsizeiptr size, GLenum usage, void* data = nullptr);
+GLuint CreateVAOWithVBOSettings(std::function<void()>settings);
+
 char* LoadFileContent(const char *path);
 GLuint CompileShader(GLenum shaderType, const char* shaderPath);
 GLuint CreateGPUProgram(const char* vsShaderPath, const char* fsShaderPath);