Initial commit

App/Source/Renderer.cpp

@@ -0,0 +1,61 @@
+#include "Renderer.h"
+
+#include <iostream>
+
+Texture CreateTexture(int width, int height)
+{
+	Texture result;
+	result.Width = width;
+	result.Height = height;
+
+	glCreateTextures(GL_TEXTURE_2D, 1, &result.Handle);
+
+	glTextureStorage2D(result.Handle, 1, GL_RGBA32F, width, height);
+
+	glTextureParameteri(result.Handle, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+	glTextureParameteri(result.Handle, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+
+	glTextureParameteri(result.Handle, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+	glTextureParameteri(result.Handle, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+
+	return result;
+}
+
+Framebuffer CreateFramebufferWithTexture(const Texture texture)
+{
+	Framebuffer result;
+
+	glCreateFramebuffers(1, &result.Handle);
+
+	if (!AttachTextureToFramebuffer(result, texture))
+	{
+		glDeleteFramebuffers(1, &result.Handle);
+		return {};
+	}
+
+	return result;
+}
+
+bool AttachTextureToFramebuffer(Framebuffer& framebuffer, const Texture texture)
+{
+	glNamedFramebufferTexture(framebuffer.Handle, GL_COLOR_ATTACHMENT0, texture.Handle, 0);
+
+	if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
+	{
+		std::cerr << "Framebuffer is not complete!" << std::endl;
+		return false;
+	}
+
+	framebuffer.ColorAttachment = texture;
+	return true;
+}
+
+void BlitFramebufferToSwapchain(const Framebuffer framebuffer)
+{
+	glBindFramebuffer(GL_READ_FRAMEBUFFER, framebuffer.Handle);
+	glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0); // swapchain
+
+	glBlitFramebuffer(0, 0, framebuffer.ColorAttachment.Width, framebuffer.ColorAttachment.Height, // Source rect
+		0, 0, framebuffer.ColorAttachment.Width, framebuffer.ColorAttachment.Height,               // Destination rect
+		GL_COLOR_BUFFER_BIT, GL_NEAREST);
+}