1 files changed, 110 insertions, 0 deletions
diff --git a/src/game/client/texture_gui.cc b/src/game/client/texture_gui.cc
new file mode 100644
index 0000000..265f6c2
--- /dev/null
+++ b/src/game/client/texture_gui.cc
@@ -0,0 +1,110 @@
+#include "client/pch.hh"
+
+#include "client/texture_gui.hh"
+
+#include "core/image.hh"
+#include "core/resource.hh"
+
+static emhash8::HashMap<std::string, resource_ptr<TextureGUI>> resource_map;
+
+template<>
+resource_ptr<TextureGUI> resource::load<TextureGUI>(const char* name, unsigned int flags)
+{
+    auto it = resource_map.find(name);
+
+    if(it != resource_map.cend()) {
+        // Return an existing resource
+        return it->second;
+    }
+
+    unsigned int image_load_flags = 0U;
+
+    if(flags & TEXTURE_GUI_LOAD_VFLIP) {
+        image_load_flags |= IMAGE_LOAD_FLIP;
+    }
+
+    if(flags & TEXTURE_GUI_LOAD_GRAYSCALE) {
+        image_load_flags |= IMAGE_LOAD_GRAY;
+    }
+
+    if(auto image = resource::load<Image>(name, image_load_flags)) {
+        GLuint gl_texture;
+
+        glGenTextures(1, &gl_texture);
+        glBindTexture(GL_TEXTURE_2D, gl_texture);
+        glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, image->size.x, image->size.y, 0, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels);
+
+        if(flags & TEXTURE_GUI_LOAD_CLAMP_S) {
+            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+        } else {
+            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
+        }
+
+        if(flags & TEXTURE_GUI_LOAD_CLAMP_T) {
+            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+        } else {
+            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+        }
+
+        if(flags & TEXTURE_GUI_LOAD_LINEAR_MAG) {
+            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+        } else {
+            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+        }
+
+        if(flags & TEXTURE_GUI_LOAD_LINEAR_MIN) {
+            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+        } else {
+            glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+        }
+
+        auto new_resource = std::make_shared<TextureGUI>();
+        new_resource->handle = static_cast<ImTextureID>(gl_texture);
+        new_resource->size.x = image->size.x;
+        new_resource->size.y = image->size.y;
+
+        return resource_map.insert_or_assign(name, new_resource).first->second;
+    }
+
+    return nullptr;
+}
+
+template<>
+void resource::hard_cleanup<TextureGUI>(void)
+{
+    for(const auto& it : resource_map) {
+        if(it.second.use_count() > 1L) {
+            spdlog::warn("resource: zombie resource [TextureGUI] {} [use_count={}]", it.first, it.second.use_count());
+        } else {
+            spdlog::debug("resource: releasing [TextureGUI] {}", it.first);
+        }
+
+        auto gl_texture = static_cast<GLuint>(it.second->handle);
+
+        glDeleteTextures(1, &gl_texture);
+    }
+
+    resource_map.clear();
+}
+
+template<>
+void resource::soft_cleanup<TextureGUI>(void)
+{
+    auto iter = resource_map.cbegin();
+
+    while(iter != resource_map.cend()) {
+        if(iter->second.use_count() == 1L) {
+            spdlog::debug("resource: releasing [TextureGUI] {}", iter->first);
+
+            auto gl_texture = static_cast<GLuint>(iter->second->handle);
+
+            glDeleteTextures(1, &gl_texture);
+
+            iter = resource_map.erase(iter);
+
+            continue;
+        }
+
+        iter = std::next(iter);
+    }
+}