新的三角形绘制

.gitignore

@@ -38,3 +38,5 @@ Release
 x64
 .git
 ipch
+shader.VC.db
+shader.VC.VC.opendb

scene.cpp

@@ -3,63 +3,36 @@
 #include "utils.h"
 #include "ground.h"
 
-GLuint vbo, ebo;
-GLuint program;
-GLint positionLocation, modelMatrixLocation, viewMatrixLocation, projectionMatrixLocation, colorLocation;//顶点、模型矩阵、视图矩阵、投影矩阵的位置
-GLint texcoordLocation, textureLocation;//顶点坐标插槽位置、贴图插槽位置
 GLuint texture;
 glm::mat4 modelMatrix, viewMatrix, projectionMatrix;
 Ground ground;
+GLint textureLocation;
+Shader*shader;
+VertexBuffer*vertexbuffer;
 
 void Init() {
-	/*1.初始化vbo并为vbo赋值*/
-	float data[] = {
-		-0.2f,-0.2f,0.0f,1.0f,  1.0f,0.0f,0.0f,1.0f, 0.0f,0.0f,
-		0.2f,-0.2f,0.0f,1.0f,  0.0f,1.0f,0.0f,1.0f, 1.0f,0.0f,
-		0.0f,0.2f,0.0f,1.0f,  0.0f,0.0f,1.0f,1.0f, 0.5f,1.0f
-	};
-	glGenBuffers(1, &vbo);//创建vbo
-	glBindBuffer(GL_ARRAY_BUFFER, vbo);//绑定下面要操作的vbo
-	glBufferData(GL_ARRAY_BUFFER, sizeof(float) * 30, data, GL_STATIC_DRAW);//发送cpu数据到GPU
-	glBindBuffer(GL_ARRAY_BUFFER, 0);//关闭绑定
+	/* 初始化vbo并为vbo赋值 */
+	vertexbuffer = new VertexBuffer;
+	vertexbuffer->SetSize(3);
 	
-	/*1.2使用vbo定义绘画顺序*/
-	unsigned short indexes[] = { 0,1,2 };
-	glGenBuffers(1, &ebo);
-	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo);
-	glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(unsigned short) * 3, indexes, GL_STATIC_DRAW);
-	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
+	vertexbuffer->SetPosition(0, -0.2f, -0.2f, 0.0f);
+	vertexbuffer->SetTexcoord(0, 0.0f, 0.0f);
+	vertexbuffer->SetColor(0, 1.0f, 1.0f, 1.0f);
 
-	/*2.编译shader*/
-	int fileSize = 0;
-	unsigned char * shaderCode = LoadFileContent("Res/test.vs", fileSize); 
-	GLuint vsShader = CompileShader(GL_VERTEX_SHADER, (char*)shaderCode);//编译 vertex shader
-	delete shaderCode;
+	vertexbuffer->SetPosition(1, 0.2f, -0.2f, 0.0f);
+	vertexbuffer->SetTexcoord(1, 1.0f, 0.0f);
+	vertexbuffer->SetColor(1, 1.0f, 0.0f, 0.0f);
 
-	shaderCode = LoadFileContent("Res/test.fs", fileSize);
-	GLuint fsShader = CompileShader(GL_FRAGMENT_SHADER, (char*)shaderCode);//编译 fragment shader
-	delete shaderCode;
+	vertexbuffer->SetPosition(2, 0.0f, 0.2f, 0.0f);
+	vertexbuffer->SetTexcoord(2, 0.5f, 1.0f);
+	vertexbuffer->SetColor(2, 0.0f, 1.0f, 0.0f);
 
-	/*3.链接 vertex shader 和 fragment shader*/
-	program = CreateProgram(vsShader, fsShader);
-	glDeleteShader(vsShader);
-	glDeleteShader(fsShader);
+	/* 初始化 shader */
+	shader = new Shader;
+	shader->Init("Res/test.vs", "Res/test.fs");
 
-	/*4.获取顶点、模型矩阵、视图矩阵、投影矩阵，在GPU中的位置，有这个位置后面才能对其进行赋值操作*/
-	/*
-	attribute vec4 position;
-	uniform mat4 ModelMatrix;
-	uniform mat4 ViewMatrix;
-	uniform mat4 ProjectionMatrix;
-	*/
-	positionLocation = glGetAttribLocation(program, "position");
-	colorLocation = glGetAttribLocation(program, "color");
-	texcoordLocation = glGetAttribLocation(program, "texcoord");
+	textureLocation = glGetUniformLocation(shader->mProgram, "U_Texture");
 
-	modelMatrixLocation = glGetUniformLocation(program, "ModelMatrix");
-	viewMatrixLocation = glGetUniformLocation(program, "ViewMatrix");
-	projectionMatrixLocation = glGetUniformLocation(program, "ProjectionMatrix");
-	textureLocation = glGetUniformLocation(program, "U_Texture");
 	modelMatrix = glm::translate(0.0f, 0.0f, -0.6f);
 
 	texture = CreateTexture2DFromBMP("Res/test.bmp");
@@ -67,7 +40,6 @@ void Init() {
 	ground.Init();
 }
 void SetViewPortSize(float width, float height) {
-	//5.1.设置投影矩阵
 	projectionMatrix = glm::perspective(60.0f, width / height, 0.1f, 1000.0f);
 }
 void Draw() {
@@ -77,34 +49,10 @@ void Draw() {
 
 	ground.Draw(viewMatrix, projectionMatrix);
 
-	glUseProgram(program);
-
-	/*5.2.把MVP矩阵赋值到显卡中*/
-	glUniformMatrix4fv(modelMatrixLocation, 1, GL_FALSE, glm::value_ptr(modelMatrix));//设置模型矩阵
-	glUniformMatrix4fv(viewMatrixLocation, 1, GL_FALSE, glm::value_ptr(viewMatrix));
-	glUniformMatrix4fv(projectionMatrixLocation, 1, GL_FALSE, glm::value_ptr(projectionMatrix));
-	
-
-	/*6.设置绘制的数据*/
+	vertexbuffer->Bind();
+	shader->Bind(glm::value_ptr(modelMatrix), glm::value_ptr(viewMatrix), glm::value_ptr(projectionMatrix));
 	glBindTexture(GL_TEXTURE_2D, texture);
-	glUniform1i(textureLocation, 0);//设置贴图
-	glBindBuffer(GL_ARRAY_BUFFER, vbo);//绑定vbo，就是1部分设置的几个顶点数据
-	glEnableVertexAttribArray(positionLocation);//启用顶点插槽
-	glVertexAttribPointer(positionLocation, 4, GL_FLOAT, GL_FALSE, sizeof(float) * 10, 0);//把vbo顶点数据填入顶点插槽
-	glEnableVertexAttribArray(colorLocation);//启用颜色插槽
-	glVertexAttribPointer(colorLocation, 4, GL_FLOAT, GL_FALSE, sizeof(float) * 10, (void*)(sizeof(float) * 4));//把vbo颜色数据填入颜色插槽
-	glEnableVertexAttribArray(texcoordLocation);
-	glVertexAttribPointer(texcoordLocation, 2, GL_FLOAT, GL_FALSE, sizeof(float) * 10, (void*)(sizeof(float) * 8));
-
-	glBindBuffer(GL_ARRAY_BUFFER, 0);
-
-	/*7.绘制*/
-	//glDrawArrays(GL_TRIANGLES, 0, 3);//顺序绘制
-	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo);
-	glDrawElements(GL_TRIANGLES, 3, GL_UNSIGNED_SHORT, 0);//按照ebo顺序绘制
-	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
-	
-	
-	/*8.解除绑定*/
-	glUseProgram(0);
+	glUniform1i(textureLocation, 0);
+	glDrawArrays(GL_TRIANGLES, 0, 3);
+	vertexbuffer->Unbind();
 }