From f728e4c8d202de241673a13ce61570b6acb4bba7 Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Fri, 25 May 2018 23:47:27 +0200
Subject: Restructure source directory

---
 src/buffer/frame/texture_framebuffer.h | 62 ++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 src/buffer/frame/texture_framebuffer.h

(limited to 'src/buffer/frame/texture_framebuffer.h')

diff --git a/src/buffer/frame/texture_framebuffer.h b/src/buffer/frame/texture_framebuffer.h
new file mode 100644
index 0000000..31153ff
--- /dev/null
+++ b/src/buffer/frame/texture_framebuffer.h
@@ -0,0 +1,62 @@
+#pragma once
+
+class TextureFramebuffer {
+private:
+	GLuint _id;
+	GLuint _texture;
+
+	bool _good = false;
+
+public:
+	struct Guard {
+		const GLuint _id;
+
+		Guard(GLuint id): _id(id) {
+			glBindFramebuffer(GL_FRAMEBUFFER, _id);
+		}
+		~Guard() {
+			glBindFramebuffer(GL_FRAMEBUFFER, 0);
+		}
+	};
+
+	Guard use() const {
+		return Guard(_id);
+	}
+
+	TextureFramebuffer(std::size_t width, std::size_t height) {
+		glGenFramebuffers(1, &_id);
+
+		auto guard = use();
+
+		glGenTextures(1, &_texture);
+		glBindTexture(GL_TEXTURE_2D, _texture);
+		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, (void*)0);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+		glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, _texture, 0);
+
+		if ( glCheckFramebufferStatus(GL_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE ) {
+			_good = true;
+		}
+	}
+
+	~TextureFramebuffer() {
+		glDeleteFramebuffers(1, &_id);
+	}
+
+	bool isGood() const {
+		return _good;
+	}
+
+	void resize(std::size_t width, std::size_t height) const {
+		auto guard = use();
+
+		glViewport(0, 0, width, height);
+		glBindTexture(GL_TEXTURE_2D, _texture);
+		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, (void*)0);
+	}
+
+	GLuint getTexture() const {
+		return _texture;
+	}
+};
-- 
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