From feec0785bc811ce9b6601e02ac5b3996756d25f3 Mon Sep 17 00:00:00 2001
From: Relintai <relintai@protonmail.com>
Date: Sun, 31 Dec 2023 11:17:18 +0100
Subject: [PATCH] More work on Texture.

---
 sfw/render_core/texture.cpp | 19 +++++++++++++++++--
 sfw/render_core/texture.h   | 11 +++++++----
 2 files changed, 24 insertions(+), 6 deletions(-)

diff --git a/sfw/render_core/texture.cpp b/sfw/render_core/texture.cpp
index 9715f60..f72f983 100644
--- a/sfw/render_core/texture.cpp
+++ b/sfw/render_core/texture.cpp
@@ -3,6 +3,18 @@
 #include "memory.h"
 #include <stdio.h>
 
+#include "window.h"
+
+void Texture::set_as_render_target() {
+	glBindFramebuffer(GL_FRAMEBUFFER, _fbo);
+	glViewport(0, 0, _fbo_width, _fbo_height);
+}
+
+void Texture::unset_render_target() {
+	glBindFramebuffer(GL_FRAMEBUFFER, 0);
+	glViewport(0, 0, AppWindow::get_singleton()->get_width(), AppWindow::get_singleton()->get_height());
+}
+
 void Texture::create_from_image(const Ref<Image> &img) {
 	if (_image == img) {
 		return;
@@ -28,7 +40,6 @@ void Texture::create_from_image(const Ref<Image> &img) {
 Ref<Image> Texture::get_data() {
 	ERR_FAIL_COND_V(!_texture, Ref<Image>());
 	ERR_FAIL_COND_V(_data_size == 0, Ref<Image>());
-	//TODO Error if not render target
 
 	//GLES
 
@@ -256,8 +267,12 @@ Texture::Texture() {
 	_data_size = 0;
 	_texture_index = 0;
 	_flags = 0;
-	_render_target = false;
+
 	_texture_format = Image::FORMAT_RGBA8;
+
+	_fbo_width = 0;
+	_fbo_height = 0;
+	_fbo = 0;
 }
 
 Texture::~Texture() {
diff --git a/sfw/render_core/texture.h b/sfw/render_core/texture.h
index 09ea094..01db7db 100644
--- a/sfw/render_core/texture.h
+++ b/sfw/render_core/texture.h
@@ -17,9 +17,8 @@ public:
 		return _texture;
 	}
 
-	//TODO
-	//set_as_render_target()
-	//unset_render_target()
+	void set_as_render_target();
+	void unset_render_target();
 
 	void create_from_image(const Ref<Image> &img);
 
@@ -43,8 +42,12 @@ protected:
 	int _texture_index;
 	int _data_size;
 	int _mipmaps;
-	bool _render_target;
+
 	GLuint _texture;
+
+	int _fbo_width;
+	int _fbo_height;
+	GLuint _fbo;
 };
 
 #endif // TEXTURE_H