1 files changed, 146 insertions, 0 deletions
diff --git a/Runtime/Graphics/Shader.cpp b/Runtime/Graphics/Shader.cpp
index e69de29..b8b9e33 100644
--- a/Runtime/Graphics/Shader.cpp
+++ b/Runtime/Graphics/Shader.cpp
@@ -0,0 +1,146 @@
+#include <exception>
+#include "Runtime/Debug/log.h"
+#include "Shader.h"
+#include "OpenGL.h"
+
+void checkCompileshaderErrorors(GLuint shader, std::string type)
+{
+	GLint success;
+	GLchar infoLog[1024];
+	std::string shaderError = "";
+	if (type != "PROGRAM")
+	{
+		glGetShaderiv(shader, GL_COMPILE_STATUS, &success);
+		if (!success)
+		{
+			glGetShaderInfoLog(shader, 1024, NULL, infoLog);
+			shaderError = "ERROR::SHADER_COMPILATION_ERROR of type: " + type + "\n" + infoLog;
+		}
+	}
+	else
+	{
+		glGetProgramiv(shader, GL_LINK_STATUS, &success);
+		if (!success)
+		{
+			glGetProgramInfoLog(shader, 1024, NULL, infoLog);
+			shaderError = "ERROR::SHADER_COMPILATION_ERROR of type: " + type + "\n" + infoLog;
+		}
+	}
+	if (!success)
+	{
+		throw ShaderCompileExecption(shaderError);
+	}
+}
+
+Shader::Shader(LuaBind::VM*vm, bool keepSrc)
+	: NativeClass<Shader>(vm)
+	, m_KeepSrc(keepSrc)
+{
+}
+
+Shader::Shader(LuaBind::VM* vm, std::string& vert, std::string& frag, bool keepSrc)
+	: NativeClass<Shader>(vm)
+	, m_KeepSrc(keepSrc)
+{
+	const char* vertCode = vert.c_str();
+	const char* fragCode = frag.c_str();
+	// vertex shader
+	m_VertID = glCreateShader(GL_VERTEX_SHADER);
+	glShaderSource(m_VertID, 1, &vertCode, NULL);
+	glCompileShader(m_VertID);
+	checkCompileshaderErrorors(m_VertID, "VERTEX");
+	// fragment Shader
+	m_FragID = glCreateShader(GL_FRAGMENT_SHADER);
+	glShaderSource(m_FragID, 1, &fragCode, NULL);
+	glCompileShader(m_FragID);
+	checkCompileshaderErrorors(m_FragID, "FRAGMENT");
+	// create program
+	m_ProgramID = glCreateProgram();
+	glAttachShader(m_ProgramID, m_VertID);
+	glAttachShader(m_ProgramID, m_FragID);
+	glLinkProgram(m_ProgramID);
+	checkCompileshaderErrorors(m_FragID, "PROGRAM");
+	// keep src
+	if (keepSrc)
+	{
+		m_VertSrc = vert;
+		m_FragSrc = frag;
+	}
+}
+
+Shader::~Shader()
+{
+	glDeleteProgram(m_ProgramID);
+	glDeleteShader(m_VertID);
+	glDeleteShader(m_FragID);
+}
+
+void Shader::ReCompile(std::string& vert, std::string frag)
+{
+	const char* vertCode = vert.c_str();
+	const char* fragCode = frag.c_str();
+	// vertex shader
+	glShaderSource(m_VertID, 1, &vertCode, NULL);
+	glCompileShader(m_VertID);
+	checkCompileshaderErrorors(m_VertID, "VERTEX");
+	// fragment Shader
+	glShaderSource(m_FragID, 1, &fragCode, NULL);
+	glCompileShader(m_FragID);
+	checkCompileshaderErrorors(m_FragID, "FRAGMENT");
+	// create program
+	glAttachShader(m_ProgramID, m_VertID);
+	glAttachShader(m_ProgramID, m_FragID);
+	glLinkProgram(m_ProgramID);
+	checkCompileshaderErrorors(m_FragID, "PROGRAM");
+	// 
+	if (m_KeepSrc)
+	{
+		m_VertSrc = vert;
+		m_FragSrc = frag;
+	}
+}
+
+void Shader::ReCompileVert(std::string& vert)
+{
+	glDeleteShader(m_VertID);
+	const char* vertCode = vert.c_str();
+	// vertex shader
+	glShaderSource(m_VertID, 1, &vertCode, NULL);
+	glCompileShader(m_VertID);
+	checkCompileshaderErrorors(m_VertID, "VERTEX");
+	// create program
+	glAttachShader(m_ProgramID, m_VertID);
+	glAttachShader(m_ProgramID, m_FragID);
+	glLinkProgram(m_ProgramID);
+	checkCompileshaderErrorors(m_FragID, "PROGRAM");
+	// 
+	if (m_KeepSrc)
+	{
+		m_VertSrc = vert;
+	}
+}
+
+void Shader::ReCompileFrag(std::string frag)
+{
+	glDeleteShader(m_FragID);
+	const char* fragCode = frag.c_str();
+	// fragment Shader
+	glShaderSource(m_FragID, 1, &fragCode, NULL);
+	glCompileShader(m_FragID);
+	checkCompileshaderErrorors(m_FragID, "FRAGMENT");
+	// create program
+	glAttachShader(m_ProgramID, m_VertID);
+	glAttachShader(m_ProgramID, m_FragID);
+	glLinkProgram(m_ProgramID);
+	checkCompileshaderErrorors(m_FragID, "PROGRAM");
+	// 
+	if (m_KeepSrc)
+	{
+		m_FragSrc = frag;
+	}
+}
+
+bool Shader::IsValid()
+{
+	return m_ProgramID != 0;
+}
+\ No newline at end of file