From 0e7de8a1db47187e79ebd90f020543e78bbbd47d Mon Sep 17 00:00:00 2001
From: Piotr <mev_lyshkin@protonmail.com>
Date: Fri, 25 Sep 2020 22:44:02 +0200
Subject: [PATCH] Image2 crate working

---
 Cargo.toml        |  5 +++
 src/gaia/utils.rs | 79 ++++++++++++++++++++++++++++++++++++++++++++---
 2 files changed, 79 insertions(+), 5 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 44f74d2..4a384a6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,6 +23,11 @@ tobj = "2.0.2"
 num = "0.3.0"
 rand = "0.7.3"
 human-panic = "1.0.3"
+inline_tweak = "1.0.8"
+image2 = { git = "https://github.com/Leinnan/image2-rs", features = [] }
+# serde = "1.0.116"
+# serde_derive = "1.0.116"
+# assets_manager ={ version="0.3.2", features= ["ron", "bincode"]}
 
 [profile.dev.package."*"]
 opt-level = 2
\ No newline at end of file
diff --git a/src/gaia/utils.rs b/src/gaia/utils.rs
index baca959..875f779 100644
--- a/src/gaia/utils.rs
+++ b/src/gaia/utils.rs
@@ -2,9 +2,74 @@ use gl;
 use image;
 use image::DynamicImage::*;
 use image::*;
+use image2::{
+    ImageBuf,
+    ImagePtr,
+    Rgb,Rgba, Gray,
+    Type,
+    io,
+    Filter,
+    filter::ToGrayscale
+ };
+use image2::image::Image;
 use std::os::raw::c_void;
 use std::path::Path;
 
+
+pub unsafe fn load_texture2(path: &str, file_format: &str)  -> u32 {
+    println!("[stb]Loading texture from path: {} with format {}", path, file_format);
+    let mut id = 0;
+
+
+    gl::GenTextures(1, &mut id);
+    let (data, dim, format) = match file_format {
+        "png" => {
+            let img : ImagePtr<u8, Rgba> = io::read_u8(path).unwrap();
+
+            let img_data = img.data().to_vec();
+            let (x,y,_) = img.shape();
+
+            (img_data,(x as i32,y as i32),gl::RGBA)
+        },
+        _ => {
+            let img : ImagePtr<u8, Rgb> = io::read_u8(path).unwrap();
+
+            let img_data = img.data().to_vec();
+            let (x,y,_) = img.shape();
+
+            (img_data,(x as i32,y as i32),gl::RGB)
+        },
+        // _ => (io::read(path).unwrap() as ImageBuf<f64, Rgba>,gl::RGBA),
+        // _ => (io::read_u8(path).unwrap() as ImagePtr<u8, Rgb>,gl::RGB),
+    };
+
+    gl::BindTexture(gl::TEXTURE_2D, id);
+    gl::TexImage2D(
+        gl::TEXTURE_2D,
+        0,
+        format as i32,
+        dim.0 as i32,
+        dim.1 as i32,
+        0,
+        format,
+        gl::UNSIGNED_BYTE,
+        &data[0] as *const u8 as *const c_void,
+    );
+    gl::GenerateMipmap(gl::TEXTURE_2D);
+
+    gl::TexParameteri(gl::TEXTURE_2D, gl::TEXTURE_WRAP_S, gl::REPEAT as i32);
+    gl::TexParameteri(gl::TEXTURE_2D, gl::TEXTURE_WRAP_T, gl::REPEAT as i32);
+    gl::TexParameteri(
+        gl::TEXTURE_2D,
+        gl::TEXTURE_MIN_FILTER,
+        gl::LINEAR_MIPMAP_LINEAR as i32,
+    );
+    gl::TexParameteri(gl::TEXTURE_2D, gl::TEXTURE_MAG_FILTER, gl::LINEAR as i32);
+
+    id
+}
+
+
 pub unsafe fn load_texture(path: &str) -> u32 {
     println!("Loading texture from path: {}", path);
     let mut id = 0;
@@ -14,11 +79,13 @@ pub unsafe fn load_texture(path: &str) -> u32 {
     let format = match img {
         ImageLuma8(_) => gl::RED,
         ImageLumaA8(_) => gl::RG,
-        ImageRgb8(_) => gl::RGB,
-        ImageRgba8(_) => gl::RGBA,
-        _ => gl::RGB,
+        ImageRgb8(_) => {println!("RGB for {}",path);
+            gl::RGB},
+        ImageRgba8(_) => {println!("RGBA for {}",path);
+            gl::RGBA},
+        _ => {println!("RGBA for {}",path);
+        gl::RGB},
     };
-
     let data = img.raw_pixels();
     let dim = img.dimensions();
 
@@ -50,6 +117,8 @@ pub unsafe fn load_texture(path: &str) -> u32 {
 
 pub unsafe fn load_texture_from_dir(filename: &str, directory: &str) -> u32 {
     let fullpath = format!("{}/{}", directory, filename);
+    let dot = filename.find(".").unwrap_or_default() + 1usize;
+    let (_, format) = filename.split_at(dot);
 
-    load_texture(&fullpath)
+    load_texture2(&fullpath,format)
 }