为shader编译和链接添加错误检查

main.cpp

@@ -22,75 +22,7 @@ LRESULT CALLBACK GLWindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
 	return DefWindowProc(hwnd, msg, wParam, lParam);//其他消息调用window默认处理函数
 }
 
-/**
-* 创建一个GPU程序
-*/
-GLuint CreateGPUProgram(const char* vsShaderPath, const char* fsShaderPath) {
-
-	//创建shader
-	GLuint vsShader = glCreateShader(GL_VERTEX_SHADER);
-	GLuint fsShader = glCreateShader(GL_FRAGMENT_SHADER);
-	
-	//读取shader代码
-	const char* vsCode = LoadFileContent(vsShaderPath);
-	const char* fsCode = LoadFileContent(fsShaderPath);
-	
-	//把shader代码 从内存传到显存
-	glShaderSource(vsShader, 1, &vsCode, nullptr);
-	glShaderSource(fsShader, 1, &fsCode, nullptr);
-	
-	//编译shader
-	glCompileShader(vsShader);
-	GLint compileResult = GL_TRUE;
-	glGetShaderiv(vsShader, GL_COMPILE_STATUS, &compileResult);
-	if (compileResult == GL_FALSE) {
-		char szLog[1024] = { 0 };
-		GLsizei logLen = 0;//实际错误日志长度
-		glGetShaderInfoLog(vsShader, 1024, &logLen, szLog);
-		printf("Compile shader fail error log is : %s \n shader code :\n %s \n ", szLog, vsCode);
-		glDeleteShader(vsShader);
-	}
-
-	glCompileShader(fsShader);
-	compileResult = GL_TRUE;
-	glGetShaderiv(fsShader, GL_COMPILE_STATUS, &compileResult);
-	if (compileResult == GL_FALSE) {
-		char szLog[1024] = { 0 };
-		GLsizei logLen = 0;//实际错误日志长度
-		glGetShaderInfoLog(fsShader, 1024, &logLen, szLog);
-		printf("Compile shader fail error log is : %s \n shader code :\n %s \n ", szLog, fsCode);
-		glDeleteShader(fsShader);
-	}
-	//创建program
-	GLuint program = glCreateProgram();
-	
-	//绑定shader
-	glAttachShader(program, vsShader);
-	glAttachShader(program, fsShader);
-
-	//连接
-	glLinkProgram(program);
-
-	GLint nResult;
-	glGetProgramiv(program, GL_LINK_STATUS, &nResult);
-	if (nResult == GL_FALSE) {
-		char log[1024] = { 0 };
-		GLsizei writed = 0;
-		glGetProgramInfoLog(program, 1024, &writed, log);
-		printf("Create CPU program fail error %s\n", log);
-		glDeleteProgram(program);
-		program = 0;
-	}
-	//解绑shader
-	glDetachShader(program, vsShader);
-	glDetachShader(program, fsShader);
 
-	//删除shader
-	glDeleteShader(vsShader);
-	glDeleteShader(fsShader);
-
-	return program;
-}
 /**
 * @hinstance 本应用程序启动实例
 * @hPrevInstance 上一次应用程式的实例

misc.cpp

@@ -36,3 +36,76 @@ char* LoadFileContent(const char *path) {
 	fclose(pFile);
 	return nullptr;
 }
+
+GLuint CompileShader(GLenum shaderType, const char * shaderPath)
+{
+	//创建shader
+	GLuint shader = glCreateShader(shaderType);
+	if (shader == 0) {
+		printf("glCreateShader false\n");
+		return 0;
+	}
+	//读取shader代码
+	const char* shaderCode = LoadFileContent(shaderPath);
+	if (shaderCode == nullptr) {
+		printf("load shader code from file: %s false\n", shaderPath);
+		return 0;
+	}
+	//把shader代码 从内存传到显存
+	glShaderSource(shader, 1, &shaderCode, nullptr);
+	glCompileShader(shader);
+
+	GLint compileResult = GL_TRUE;
+	glGetShaderiv(shader, GL_COMPILE_STATUS, &compileResult);
+	if (compileResult == GL_FALSE) {
+		char szLog[1024] = { 0 };
+		GLsizei logLen = 0;//实际错误日志长度
+		glGetShaderInfoLog(shader, 1024, &logLen, szLog);
+		printf("Compile shader fail error log is : %s \n shader code :\n %s \n ", szLog, shaderCode);
+		glDeleteShader(shader);
+		return 0;
+	}
+
+	return shader;
+}
+
+/**
+* 创建一个GPU程序
+*/
+GLuint CreateGPUProgram(const char* vsShaderPath, const char* fsShaderPath) {
+
+	GLuint vsShader = CompileShader(GL_VERTEX_SHADER,vsShaderPath);
+	GLuint fsShader = CompileShader(GL_FRAGMENT_SHADER,fsShaderPath);
+
+	//创建program
+	GLuint program = glCreateProgram();
+
+	//绑定shader
+	glAttachShader(program, vsShader);
+	glAttachShader(program, fsShader);
+
+	//连接
+	glLinkProgram(program);
+
+	//解绑shader
+	glDetachShader(program, vsShader);
+	glDetachShader(program, fsShader);
+
+	//删除shader
+	glDeleteShader(vsShader);
+	glDeleteShader(fsShader);
+
+	//检查错误
+	GLint nResult;
+	glGetProgramiv(program, GL_LINK_STATUS, &nResult);
+	if (nResult == GL_FALSE) {
+		char log[1024] = { 0 };
+		GLsizei writed = 0;
+		glGetProgramInfoLog(program, 1024, &writed, log);
+		printf("Create CPU program fail error %s\n", log);
+		glDeleteProgram(program);
+		program = 0;
+	}
+
+	return program;
+}

misc.h

@@ -3,3 +3,5 @@
 
 GLuint CreateBufferObject(GLenum bufferType, GLsizeiptr size, GLenum usage, void* data = nullptr);
 char* LoadFileContent(const char *path);
+GLuint CompileShader(GLenum shaderType, const char* shaderPath);
+GLuint CreateGPUProgram(const char* vsShaderPath, const char* fsShaderPath);

model.cpp

@@ -33,7 +33,7 @@ VertexData * LoadObjModel(const char * filePath, unsigned int ** indexes, int &
 		while (!ssObjFile.eof()) {
 			memset(szOneLine, 0, 256);
 			ssObjFile.getline(szOneLine, 256);
-			printf("%s \n", szOneLine);
+			//printf("%s \n", szOneLine);
 			if (strlen(szOneLine) > 0) {
 				std::stringstream ssOneLine(szOneLine);
 				if (szOneLine[0] == 'v') {