working on texture array loading. will have to redo code

CMakeLists.txt

@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.25)
 
-set(BLT_GRAPHICS_VERSION 0.13.30)
+set(BLT_GRAPHICS_VERSION 0.13.31)
 set(BLT_GRAPHICS_TEST_VERSION 0.0.1)
 
 project(BLT_WITH_GRAPHICS VERSION ${BLT_GRAPHICS_VERSION})
@@ -30,7 +30,7 @@ else ()
 endif ()
 
 if (NOT TARGET BLT)
-add_subdirectory(libraries/BLT)
+    add_subdirectory(libraries/BLT)
 endif ()
 add_subdirectory(libraries/freetype-2.13.2)
 

include/blt/gfx/renderer/resource_manager.h

@@ -20,40 +20,122 @@
 #define BLT_WITH_GRAPHICS_RESOURCE_MANAGER_H
 
 #include <blt/std/hashmap.h>
+#include <blt/std/string.h>
+#include <blt/meta/config_generator.h>
 #include <blt/gfx/texture.h>
 #include <mutex>
 #include <vector>
 #include <optional>
 #include <string>
 #include "blt/compatibility.h"
+#include "blt/std/ranges.h"
 
 namespace blt::gfx
 {
-    
+    struct texture_info
-    struct loadable_texture
     {
-        std::string path;
+        public:
-        std::string name;
+            texture_info() = default;
-        
+            
-        loadable_texture() = default;
+            explicit texture_info(std::string path, std::string name): path(std::move(path)), name(std::move(name))
-        
+            {}
-        loadable_texture(std::string path, std::string name): path(std::move(path)), name(std::move(name))
+            
-        {}
+            BLT_MAKE_GETTER(std::string, path);
+            
+            BLT_MAKE_GETTER(std::string, name);
+            
+            BLT_MAKE_GETTER_AND_SETTER(blt::i32, desired_width);
+            
+            BLT_MAKE_GETTER_AND_SETTER(blt::i32, desired_height);
+        private:
+            std::string path;
+            std::string name;
+            blt::i32 desired_width = 0;
+            blt::i32 desired_height = 0;
+    };
+    
+    class texture_array
+    {
+        public:
+            texture_array(std::string name, i32 width, i32 height): name(std::move(name)), width(width), height(height)
+            {}
+            
+            void add_texture(std::string path, std::string t_name = "")
+            {
+                textures.push_back(texture_info{std::move(path), std::move(t_name)}.set_desired_width(width).set_desired_height(height));
+            }
+            
+            BLT_MAKE_GETTER(std::vector<texture_info>, textures);
+            
+            BLT_MAKE_GETTER(std::string, name);
+        private:
+            std::vector<texture_info> textures;
+            std::string name;
+            i32 width;
+            i32 height;
     };
     
     class resource_manager
     {
         private:
+            struct texture_destination
+            {
+                std::vector<texture_file*>* vec = nullptr;
+                std::optional<blt::size_t> order = {};
+                
+                texture_destination() = default;
+                
+                explicit texture_destination(std::vector<texture_file*>* vec): vec(vec)
+                {}
+                
+                explicit texture_destination(std::vector<texture_file*>* vec, blt::size_t order): vec(vec), order(order)
+                {}
+                
+                void add(texture_file* file) const
+                {
+                    if (order)
+                        vec->insert(vec->begin() + static_cast<blt::ptrdiff_t>(*order), file);
+                    else
+                        vec->push_back(file);
+                }
+            };
+            
             std::mutex load_lock;
             std::mutex save_lock;
-            std::vector<loadable_texture> textures_to_load;
+            std::vector<std::pair<texture_destination, texture_info>> textures_to_load;
             std::vector<texture_file*> loaded_textures;
+            std::vector<std::pair<std::string, std::vector<texture_file*>>> loaded_arrays;
             blt::hashmap_t<std::string, texture_gl2D*> textures_2d;
+            blt::hashmap_t<std::string, gl_texture2D_array*> texture_arrays_2d;
             std::string resource_prefix;
+            
+            void load_to_gl();
         public:
             resource_manager() = default;
             
-            void enqueue(std::string path, std::string name = "");
+            explicit resource_manager(std::string_view resource_prefix): resource_prefix(resource_prefix)
+            {
+                if (!blt::string::ends_with(this->resource_prefix, "/"))
+                    this->resource_prefix += '/';
+            }
+            
+            void enqueue(std::string path, std::string name = "")
+            {
+                textures_to_load.emplace_back(texture_destination{&loaded_textures}, texture_info{std::move(path), std::move(name)});
+            }
+            
+            void with(texture_info info)
+            {
+                textures_to_load.emplace_back(texture_destination{&loaded_textures}, std::move(info));
+            }
+            
+            void with(texture_array array)
+            {
+                loaded_arrays.emplace_back(array.get_name(), std::vector<texture_file*>{});
+                auto& dest = loaded_arrays.back();
+                for (const auto& [index, texture] : blt::enumerate(array.get_textures()))
+                    textures_to_load.emplace_back(texture_destination{&dest.second, index}, std::move(texture));
+            }
             
             void load_resources(std::size_t threads = 8);
             
@@ -78,6 +160,8 @@ namespace blt::gfx
              */
             inline void setPrefixDirectory(std::string path)
             {
+                if (!blt::string::ends_with(resource_prefix, "/"))
+                    resource_prefix += '/';
                 resource_prefix = std::move(path);
             }
             

libraries/BLT

@@ -1 +1 @@
-Subproject commit 0869509c6a5fd530efbd57469d2b99b89c22b769
+Subproject commit e3c925ed1186aa6924527b08671293b98be784c7

src/blt/gfx/renderer/camera.cpp

@@ -100,12 +100,16 @@ void blt::gfx::first_person_camera::update()
 
 void blt::gfx::first_person_camera::update_view(blt::gfx::matrix_state_manager& manager)
 {
+    // setup perspective matrix
     blt::mat4x4 view;
     view.rotateX(toRadians(rotation_.x()));
     view.rotateY(toRadians(rotation_.y()));
     view.rotateZ(toRadians(rotation_.z()));
     view.translate(-position_);
     manager.setView(view);
+    // setup ortho-view matrix
+    blt::mat4x4 view2d;
+    manager.setView2D(view2d, 1);
 }
 
 float easeInOutCubic(float x)

src/blt/gfx/renderer/resource_manager.cpp

@@ -29,38 +29,36 @@ namespace blt::gfx
             delete p.second;
     }
     
-    void resource_manager::enqueue(std::string path, std::string name)
-    {
-        textures_to_load.emplace_back(resource_prefix + std::move(path), std::move(name));
-    }
-    
     void resource_manager::load_resources(std::size_t threads)
     {
 #ifndef __EMSCRIPTEN__
         blt::thread_pool<false> pool{threads, [&]() {
-            loadable_texture texture;
+            texture_info texture;
+            texture_destination destination;
             {
                 std::scoped_lock lock(load_lock);
                 if (textures_to_load.empty())
                     return;
-                texture = textures_to_load.back();
+                destination = textures_to_load.back().first;
+                texture = std::move(textures_to_load.back().second);
                 textures_to_load.pop_back();
             }
-            BLT_DEBUG("Loading texture file %s", texture.path.c_str());
+            auto path = resource_prefix + texture.get_path();
-            if (!std::filesystem::exists(texture.path))
+            BLT_DEBUG("Loading texture file %s", path.c_str());
+            if (!std::filesystem::exists(path))
             {
-                BLT_WARN("Texture '%s' does not exist on disk!", texture.path.c_str());
+                BLT_WARN("Texture '%s' does not exist on disk!", path.c_str());
                 return;
             }
-            auto* file = new texture_file(texture.path, texture.name);
+            auto* file = new texture_file(path, texture.get_name());
+            file->resize(texture.get_desired_width(), texture.get_desired_height());
             {
                 std::scoped_lock lock(save_lock);
-                loaded_textures.push_back(file);
+                destination.add(file);
             }
         }};
         do
         {
-            std::this_thread::sleep_for(std::chrono::milliseconds(100));
             {
                 std::scoped_lock lock(load_lock);
                 if (textures_to_load.empty())
@@ -68,15 +66,9 @@ namespace blt::gfx
             }
             {
                 std::scoped_lock lock(save_lock);
-                while (!loaded_textures.empty())
+                load_to_gl();
-                {
-                    auto* back = loaded_textures.back();
-                    textures_2d.insert({back->getName(), new texture_gl2D(back->texture())});
-                    BLT_DEBUG("Loaded Texture '%s'", back->getName().c_str());
-                    delete back;
-                    loaded_textures.pop_back();
-                }
             }
+            std::this_thread::sleep_for(std::chrono::milliseconds(100));
         } while (true);
 #else
         for (const auto& texture : textures_to_load)
@@ -91,6 +83,11 @@ namespace blt::gfx
         pool.stop();
         while (!pool.complete());
 #endif
+        load_to_gl();
+    }
+    
+    void resource_manager::load_to_gl()
+    {
         while (!loaded_textures.empty())
         {
             auto* back = loaded_textures.back();
@@ -99,5 +96,19 @@ namespace blt::gfx
             delete back;
             loaded_textures.pop_back();
         }
+        while (!loaded_arrays.empty())
+        {
+            auto& back = loaded_arrays.back();
+            auto& reference_v = back.second.back();
+            // textures in an array are all the same size. we don't need to store the array width/height on this assumption
+            auto gl = new gl_texture2D_array(reference_v->width(), reference_v->height(), static_cast<blt::i32>(back.second.size()));
+            for (auto [index, texture] : blt::enumerate(back.second))
+            {
+                gl->upload(texture->texture().data(), static_cast<blt::i32>(index));
+                delete texture;
+            }
+            texture_arrays_2d.insert({back.first.c_str(), gl});
+            loaded_arrays.pop_back();
+            BLT_DEBUG("Loaded texture array '%s' of size %ld", back.first.c_str(), back.second.size());
+        }
     }
-}

src/blt/gfx/texture.cpp

@@ -114,21 +114,24 @@ blt::gfx::texture_file::texture_file(const std::string& path, const std::string&
     stbi_set_flip_vertically_on_load(true);
     m_texture.m_data = stbi_load(
             m_path.c_str(),
-            reinterpret_cast<int*>(&m_texture.m_width), reinterpret_cast<int*>(&m_texture.m_height),
+            &m_texture.m_width, &m_texture.m_height,
-            reinterpret_cast<int*>(&m_texture.m_channels),
+            &m_texture.m_channels,
-            0
+            0);
-                                );
 }
 
 blt::gfx::texture_file& blt::gfx::texture_file::resize(int target_width, int target_height)
 {
+    if (target_width == 0)
+        target_width = m_texture.width();
+    if (target_height == 0)
+        target_height = m_texture.height();
     if (target_width == m_texture.width() && target_height == m_texture.height())
         return *this;
     // since we will be replacing the loaded data pointer, is it wise to use the allocator
     // that matches with what stb image uses, which is malloc, since we unload with stbi_image_free -> (free)
     auto* output_Data = (unsigned char*) malloc(
             target_width * target_height * m_texture.channels()
-                                               );
+    );
     
     // resize the texture
     if (stbir_resize_uint8_linear(
@@ -138,7 +141,7 @@ blt::gfx::texture_file& blt::gfx::texture_file::resize(int target_width, int tar
             output_Data, target_width, target_height, 0,
             // channels
             static_cast<stbir_pixel_layout>(m_texture.channels())
-                                 ))
+    ) == nullptr)
     {
         BLT_WARN("Error resizing block texture image!");
     }