From 34052b51e00c939a35294d7085cadb5111484dd3 Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Sat, 26 May 2018 13:20:47 +0200
Subject: Separate headers into compilation units

---
 src/buffer/frame/texture_framebuffer.cc | 51 +++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)
 create mode 100644 src/buffer/frame/texture_framebuffer.cc

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

diff --git a/src/buffer/frame/texture_framebuffer.cc b/src/buffer/frame/texture_framebuffer.cc
new file mode 100644
index 0000000..b585985
--- /dev/null
+++ b/src/buffer/frame/texture_framebuffer.cc
@@ -0,0 +1,51 @@
+#include "texture_framebuffer.h"
+
+TextureFramebuffer::Guard::Guard(GLuint id):
+	_id(id) {
+	glBindFramebuffer(GL_FRAMEBUFFER, _id);
+}
+
+TextureFramebuffer::Guard::~Guard() {
+	glBindFramebuffer(GL_FRAMEBUFFER, 0);
+}
+
+TextureFramebuffer::Guard TextureFramebuffer::use() const {
+	return Guard(_id);
+}
+
+TextureFramebuffer::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::~TextureFramebuffer() {
+	glDeleteFramebuffers(1, &_id);
+}
+
+bool TextureFramebuffer::isGood() const {
+	return _good;
+}
+
+void TextureFramebuffer::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 TextureFramebuffer::getTexture() const {
+	return _texture;
+}
-- 
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