diff -r a36913fc552a -r f21b800b02a4 src/gl/axesprogram.cpp
--- a/src/gl/axesprogram.cpp	Fri Mar 06 16:08:53 2020 +0200
+++ b/src/gl/axesprogram.cpp	Fri Mar 06 20:13:10 2020 +0200
@@ -16,7 +16,7 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "gridprogram.h"
+#include "axesprogram.h"
 
 // Based on https://stackoverflow.com/q/30842755
 const char vertexShaderSource[] = R"(
@@ -31,8 +31,8 @@
 
 void main()
 {
-	gl_Position = projection * view * model * vec4(in_position, 0.0, 1.0);
-	ex_uv = ex_color;
+	gl_Position = projection * view * model * vec4(in_position, 1.0);
+	ex_color = in_color;
 }
 )";
 
@@ -44,7 +44,7 @@
 
 void main(void)
 {
-	color = vec4(ex_color, 1)
+	color = vec4(ex_color, 1);
 }
 )";
 
@@ -67,102 +67,43 @@
 	AxesVertex{{0, 0, 10000}, {0, 0, 1}},
 };
 
-AxesProgram::AxesProgram(QObject* parent) :
-	QObject{parent},
-	buffer{QOpenGLBuffer::VertexBuffer},
-	vertexShader{QOpenGLShader::Vertex},
-	fragmentShader{QOpenGLShader::Fragment}
+const char* AxesProgram::vertexShaderSource() const
 {
+	return ::vertexShaderSource;
 }
 
-void AxesProgram::initialize()
+const char* AxesProgram::fragmentShaderSource() const
 {
-	if (not isInitialized)
-	{
-		this->initializeOpenGLFunctions();
-		this->isInitialized = true;
-		this->program.emplace(this);
-		gl::buildShaders(&*this->program, ::vertexShaderSource, ::fragmentShaderSource);
-		this->program->bind();
-		this->buffer.create();
-		this->buffer.bind();
-		this->buffer.setUsagePattern(QOpenGLBuffer::StaticDraw);
-		this->buffer.allocate(data, countof(data) * sizeof data[0]);
-		this->vertexArrayObject.create();
-		this->vertexArrayObject.bind();
-		this->program->enableAttributeArray(0);
-		this->program->setAttributeBuffer(0, GL_FLOAT, 0, 2, 0);
-		this->program->setUniformVector("gridColor", this->gridColor);
-		this->vertexArrayObject.release();
-		this->buffer.release();
-		this->program->release();
-		this->checkForGLErrors();
-	}
+	return ::fragmentShaderSource;
 }
 
-void AxesProgram::setViewMatrix(const glm::mat4& newViewMatrix)
+const void* AxesProgram::vertexData() const
 {
-	this->setMatrix("view", newViewMatrix);
+	return ::data;
 }
 
-void AxesProgram::setProjectionMatrix(const glm::mat4& newProjectionMatrix)
+GLenum AxesProgram::drawMode() const
 {
-	this->setMatrix("projection", newProjectionMatrix);
-}
-
-void AxesProgram::setModelMatrix(const glm::mat4& newModelMatrix)
-{
-	this->setMatrix("model", newModelMatrix);
+	return GL_LINES;
 }
 
-void AxesProgram::setGridMatrix(const glm::mat4& newGridMatrix)
+int AxesProgram::vertexSize() const
 {
-	this->setMatrix("grid", newGridMatrix);
+	return sizeof data[0];
 }
 
-void AxesProgram::setMatrix(const char* name, const glm::mat4& matrix)
+int AxesProgram::vertexCount() const
 {
-	Q_ASSERT(this->isInitialized);
-	this->program->bind();
-	this->program->setUniformMatrix(name, matrix);
-	this->program->release();
-	this->checkForGLErrors();
+	return countof(data);
 }
 
-void GridProgram::setGridColor(const QColor& newGridColor)
-{
-	const glm::vec4 vec = gl::colorToVector4(newGridColor);
-	if (this->isInitialized)
-	{
-		this->program->bind();
-		this->program->setUniformVector("gridColor", vec);
-		this->program->release();
-		this->checkForGLErrors();
-	}
-	else
-	{
-		this->gridColor = vec;
-	}
-}
-
-void GridProgram::draw()
+void AxesProgram::setupVertexArrays()
 {
-	this->program->bind();
-	this->vertexArrayObject.bind();
-	glDrawArrays(GL_QUADS, 0, countof(data));
-	this->vertexArrayObject.release();
-	this->program->release();
-	this->checkForGLErrors();
+	for (int i : {0, 1})
+	{
+		this->program->enableAttributeArray(i);
+	}
+	const int stride = this->vertexSize();
+	this->program->setAttributeBuffer(0, GL_FLOAT, offsetof(AxesVertex, position), 3, stride);
+	this->program->setAttributeBuffer(1, GL_FLOAT, offsetof(AxesVertex, color), 3, stride);
 }
-
-void GridProgram::teardown()
-{
-	this->vertexArrayObject.destroy();
-	this->buffer.destroy();
-	this->program.reset();
-}
-
-void GridProgram::checkForGLErrors()
-{
-	gl::checkForGLErrors(qobject_cast<QWidget*>(this->parent()));
-}