Add a fixed function program

src/fixedfunction.cc

@@ -0,0 +1,60 @@
+#include <iostream>
+#include <epoxy/gl.h>
+#include <GLFW/glfw3.h>
+void triangle() {
+	glClearColor(1.0f, 1.0f, 0.0f, 0.0f);
+
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	glBegin(GL_TRIANGLES);
+		glColor3f(1.0f, 0.0f, 0.0f);
+		glVertex3f(-1.0f, -1.0f, 0.0f);
+
+		glColor3f(0.0f, 1.0f, 0.0f);
+		glVertex3f(0.0f, 1.0f, 0.0f);
+
+		glColor3f(0.0f, 0.0f, 1.0f);
+		glVertex3f(1.0f, -1.0f, 0.0f);
+	glEnd();
+}
+
+
+void framebuffer_size_callback(GLFWwindow* window, int width, int height) {
+	glViewport(0,0, width, height);
+}
+
+int main() {
+	glfwInit();
+
+	// Set OpenGL version to 1.2.
+	glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 1);
+	glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2);
+
+	// Create a GLFW window.
+	GLFWwindow* window = glfwCreateWindow(800, 600, "Fixed Function OpenGL 1.2", nullptr, nullptr);
+
+	// Fail if the window has failed to create.
+	if (window == nullptr) {
+		const char* description;
+		glfwGetError(&description);
+		std::cout << "Failed to create GLFW window.\n" << description << std::endl;
+		return -1;
+	}
+
+	glfwMakeContextCurrent(window);
+
+	glMatrixMode(GL_PROJECTION);
+	glViewport(0,0, 800, 600);
+
+	glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
+
+	while (!glfwWindowShouldClose(window)) {
+		triangle();
+
+		glfwSwapBuffers(window);
+		glfwPollEvents();
+	}
+
+	glfwTerminate();
+	return 0;
+}

src/meson.build

@@ -2,4 +2,5 @@ sources = [
 	'main.cc'
 ]
 
-exe = executable('main', sources, dependencies: [glfw, libepoxy])
+executable('main', sources, dependencies: [glfw, libepoxy])
+executable('fixedfunction', ['fixedfunction.cc'], dependencies: [glfw, libepoxy])