Working on RenderTarget example

src/dawnopengl/display/BackBufferRenderTarget.cpp

@@ -0,0 +1,46 @@
+// Copyright (c) 2022 Dominic Masters
+// 
+// This software is released under the MIT License.
+// https://opensource.org/licenses/MIT
+
+#include "BackBufferRenderTarget.hpp"
+
+using namespace Dawn;
+
+BackBufferRenderTarget::BackBufferRenderTarget(
+  std::weak_ptr<RenderManager> renderManager
+) {
+  this->renderManager = renderManager;
+}
+
+float_t BackBufferRenderTarget::getWidth() {
+  return this->width;
+}
+
+float_t BackBufferRenderTarget::getHeight() {
+  return this->height;
+}
+
+void BackBufferRenderTarget::setSize(float_t width, float_t height) {
+  this->width = width;
+  this->height = height;
+}
+
+void BackBufferRenderTarget::setClearColor(struct Color color) {
+  this->clearColor = color;
+}
+
+void BackBufferRenderTarget::clear(flag8_t clearFlags) {
+  glClearColor(
+    this->clearColor.r,
+    this->clearColor.g,
+    this->clearColor.b,
+    this->clearColor.a
+  );
+  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+}
+
+void BackBufferRenderTarget::bind() {
+  glBindFramebuffer(GL_FRAMEBUFFER, 0);
+  glViewport(0, 0, (GLsizei)this->width, (GLsizei)this->height);
+}