From 60072c1d8089ffd3294e76636198d14710be95b8 Mon Sep 17 00:00:00 2001
From: Yann Herklotz <ymherklotz@gmail.com>
Date: Sat, 9 Sep 2017 07:55:22 +0100
Subject: Restructuring

---
 yage/base/imageloader.cpp | 60 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 yage/base/imageloader.cpp

(limited to 'yage/base/imageloader.cpp')

diff --git a/yage/base/imageloader.cpp b/yage/base/imageloader.cpp
new file mode 100644
index 00000000..812110d8
--- /dev/null
+++ b/yage/base/imageloader.cpp
@@ -0,0 +1,60 @@
+/* ----------------------------------------------------------------------------
+ * imageloader.cpp
+ *
+ * Copyright (c) 2017 Yann Herklotz Grave <ymherklotz@gmail.com> -- MIT License
+ * See file LICENSE for more details
+ * ----------------------------------------------------------------------------
+ */
+
+#include <YAGE/imageloader.h>
+#include <YAGE/iomanager.h>
+#include <YAGE/picopng.h>
+
+#include <stdexcept>
+
+namespace yage
+{
+
+Texture ImageLoader::loadPng(const std::string &file_path)
+{
+    Texture texture = {};
+
+    std::vector<unsigned char> in;
+    std::vector<unsigned char> out;
+    unsigned long width, height;
+
+    if (!IoManager::readFileToBuffer(file_path, in)) {
+        throw std::runtime_error("Failed to load '" + file_path +
+                                 "' to buffer");
+    }
+
+    int error_code = decodePNG(out, width, height, &in[0], in.size());
+    if (error_code != 0) {
+        throw std::runtime_error("Failed to load '" + file_path +
+                                 "' to png with error code" +
+                                 std::to_string(error_code));
+    }
+
+    glGenTextures(1, &texture.id);
+
+    glBindTexture(GL_TEXTURE_2D, texture.id);
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA,
+                 GL_UNSIGNED_BYTE, &out[0]);
+
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
+                    GL_LINEAR_MIPMAP_LINEAR);
+
+    glGenerateMipmap(GL_TEXTURE_2D);
+
+    glBindTexture(GL_TEXTURE_2D, 0);
+
+    texture.width = (int)width;
+    texture.height = (int)height;
+
+    return texture;
+}
+
+} // namespace yage
-- 
cgit