nice

src/td/render/loader/GLLoader.cpp

@@ -0,0 +1,99 @@
+#include <td/render/loader/GLLoader.h>
+
+#include <td/render/OpenGL.h>
+
+namespace td {
+namespace GL {
+
+VertexArray::~VertexArray() {
+	if (m_ID != 0)
+		glDeleteVertexArrays(1, &m_ID);
+}
+
+VertexArray::VertexArray(ElementBuffer&& indicies) : m_ElementBuffer(std::move(indicies)) {
+	glGenVertexArrays(1, &m_ID);
+	Bind();
+	BindElementArrayBuffer();
+	// Unbind();
+}
+
+void VertexArray::Bind() const {
+	glBindVertexArray(m_ID);
+}
+
+void VertexArray::Unbind() const {
+	glBindVertexArray(0);
+}
+
+void VertexArray::BindVertexBuffer(VertexBuffer&& VertexBuffer) {
+	VertexBuffer.Bind();
+	VertexBuffer.BindVertexAttribs();
+	m_VertexBuffers.push_back(std::move(VertexBuffer));
+}
+
+void VertexArray::BindElementArrayBuffer() {
+	m_ElementBuffer.Bind();
+}
+
+VertexBuffer::~VertexBuffer() {
+	if (m_ID != 0)
+		glDeleteBuffers(1, &m_ID);
+}
+
+VertexBuffer::VertexBuffer(const std::vector<float>& data, unsigned int stride) : m_DataStride(stride) {
+	glGenBuffers(1, &m_ID);
+	Bind();
+	glBufferData(GL_ARRAY_BUFFER, static_cast<GLsizeiptr>(data.size() * sizeof(float)), nullptr, GL_STATIC_DRAW);
+	glBufferSubData(GL_ARRAY_BUFFER, 0, static_cast<GLsizeiptr>(data.size() * sizeof(float)), data.data());
+	Unbind();
+}
+
+void VertexBuffer::Bind() const {
+	glBindBuffer(GL_ARRAY_BUFFER, m_ID);
+}
+
+void VertexBuffer::Unbind() const {
+	glBindBuffer(GL_ARRAY_BUFFER, 0);
+}
+
+void VertexBuffer::AddVertexAttribPointer(unsigned int index, unsigned int coordinateSize, unsigned int offset) {
+	VertexAttribPointer pointer {
+		.m_Index = index,
+		.m_Size = coordinateSize,
+		.m_Offset = offset
+	};
+	m_VertexAttribs.push_back(pointer);
+}
+
+void VertexBuffer::BindVertexAttribs() const {
+	for (const VertexAttribPointer& pointer : m_VertexAttribs) {
+		glVertexAttribPointer(pointer.m_Index, static_cast<GLint>(pointer.m_Size), GL_FLOAT, false, m_DataStride * sizeof(float),
+		reinterpret_cast<GLvoid*>(static_cast<std::size_t>(pointer.m_Offset)));
+		glEnableVertexAttribArray(pointer.m_Index);
+	}
+}
+
+ElementBuffer::ElementBuffer(const std::vector<unsigned int>& indicies) {
+	m_TriangleCount = indicies.size();
+	glGenBuffers(1, &m_ID);
+	Bind();
+	glBufferData(GL_ELEMENT_ARRAY_BUFFER, static_cast<GLsizeiptr>(indicies.size() * sizeof(unsigned int)), nullptr, GL_STATIC_DRAW);
+	glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, static_cast<GLsizeiptr>(indicies.size() * sizeof(unsigned int)), indicies.data());
+	Unbind();
+}
+
+ElementBuffer::~ElementBuffer() {
+	if (m_ID != 0)
+		glDeleteBuffers(1, &m_ID);
+}
+
+void ElementBuffer::Bind() const {
+	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, m_ID);
+}
+
+void ElementBuffer::Unbind() const {
+	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
+}
+
+}  // namespace GL
+}  // namespace td