X-Git-Url: http://git.lukelau.me/?p=opengl.git;a=blobdiff_plain;f=program.cpp;fp=program.cpp;h=b1f2edeb52d2c210985fb24dadfe843d78d8c5de;hp=0000000000000000000000000000000000000000;hb=c44e69ec78367fb2957324026894aef970f2481a;hpb=85f8f7278f24fe73fef1a19174376b155319072f

diff --git a/program.cpp b/program.cpp
new file mode 100644
index 0000000..b1f2ede
--- /dev/null
+++ b/program.cpp
@@ -0,0 +1,50 @@
+#include "program.hpp"
+#include <fstream>
+#include <sstream>
+#include <iostream>
+
+using namespace std;
+
+void attachShader(GLuint progId, string filePath, GLenum type) {
+	GLuint shader = glCreateShader(type);
+
+	if (!shader) {
+		cerr << "error creating shader" << endl;
+		exit(1);
+	}
+
+	ifstream file(filePath);
+	stringstream buffer;
+	buffer << file.rdbuf();
+	string str = buffer.str();
+	const char* contents = str.c_str();
+
+	glShaderSource(shader, 1, (const GLchar**)&contents, NULL);
+	glCompileShader(shader);
+	GLint success;
+	glGetShaderiv(shader, GL_COMPILE_STATUS, &success);
+	if (!success) {
+		GLchar log[1024];
+		glGetShaderInfoLog(shader, 1024, NULL, log);
+		fprintf(stderr, "error: %s\n", log);
+		exit(1);
+	}
+	glAttachShader(progId, shader);
+}
+
+Program::Program(const string vertexShader, const string fragmentShader) {
+	progId = glCreateProgram();
+
+	attachShader(progId, vertexShader, GL_VERTEX_SHADER);
+	attachShader(progId, fragmentShader, GL_FRAGMENT_SHADER);
+
+	glLinkProgram(progId);
+	GLint success = 0;
+	glGetProgramiv(progId, GL_LINK_STATUS, &success);
+	if (!success) {
+		GLchar log[1024];
+		glGetProgramInfoLog(progId, sizeof(log), NULL, log);
+		fprintf(stderr, "error linking: %s\n", log);
+		exit(1);
+	}
+}