Remove usage of SOIL2, just use stb_image.h

CMakeLists.txt

@@ -3,7 +3,7 @@ set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMake;${CMAKE_MODULE_PATH}")
 project(SimpleEngine)
 
 include(cmrc/CMakeRC.cmake)
-include(CMake/Findsoil2.cmake)
+#include(CMake/Findsoil2.cmake)
 
 # Add some CMake options:
 option(SIMPLE_ENGINE_BUILD_EXAMPLES "Build example projects" ON)
@@ -20,14 +20,29 @@ find_package(GLEW REQUIRED)
 find_package(glfw3 CONFIG REQUIRED)
 find_package(glm CONFIG REQUIRED)
 
-if (WIN32)
-    find_package(soil2 CONFIG REQUIRED)
-else()
-    find_package(soil2 REQUIRED)
-endif()
+#if (WIN32)
+#    find_package(soil2 CONFIG REQUIRED)
+#else()
+#    find_package(soil2 REQUIRED)
+#endif()
 
 find_package(OpenGL REQUIRED)
 
+#include(FetchContent)
+#FetchContent_Declare(
+#  stbImage
+#  URL https://raw.githubusercontent.com/nothings/stb/5ba0baaa269b3fd681828e0e3b3ac0f1472eaf40/stb_image.h
+#  DOWNLOAD_NO_EXTRACT
+#)
+#FetchContent_MakeAvailable(stbImage)
+
+#include(ExternalProject)
+#ExternalProject_Add(stbImage
+#    URL               https://raw.githubusercontent.com/nothings/stb/5ba0baaa269b3fd681828e0e3b3ac0f1472eaf40/stb_image.h
+#    URL_HASH          MD5=d41d8cd98f00b204e9800998ecf8427e
+#    DOWNLOAD_NO_EXTRACT ON
+#)
+
 # Link sources
 file(GLOB_RECURSE source_list src/*.cpp)
 add_library(simpleengine STATIC ${source_list})
@@ -49,7 +64,7 @@ cmrc_add_resource_library(
 target_link_libraries(simpleengine PUBLIC GLEW::GLEW)
 target_link_libraries(simpleengine PUBLIC glfw)
 target_link_libraries(simpleengine PUBLIC ${GLM_LIBRARIES})
-target_link_libraries(simpleengine PUBLIC soil2)
+#target_link_libraries(simpleengine PUBLIC soil2)
 target_link_libraries(simpleengine PUBLIC ${OPENGL_LIBRARIES})
 target_link_libraries(simpleengine PRIVATE simpleengine_resources)
 

examples/dev_testing/resources/.gitignore

@@ -1,3 +1,5 @@
 *.blend
 *.obj
-*.png
+*.png
+*.bin
+*.gltf

examples/dev_testing/src/main.cpp

@@ -31,12 +31,6 @@
 #include <cmrc/cmrc.hpp>
 CMRC_DECLARE(resource_shaders);
 
-#ifdef __linux__
-#include <SOIL2.h>
-#else
-#include <SOIL2/SOIL2.h>
-#endif
-
 namespace se = simpleengine;
 
 class FPSCounterEvent : public se::Event {
@@ -179,7 +173,7 @@ int main(int argc, char *argv[]) {
     auto entity = std::make_shared<simpleengine::Entity>();
     se::gfx::Model model(material, "examples/dev_testing/resources/dragon.obj");
     entity->add_component<se::ModelComponent>(model);
-    entity->translate(5.f, 0.f, 0.f);
+    entity->translate(12.f, -4.f, 0.f);
 
     // Create a renderer and submit the entity into it.
     auto renderer  = std::make_shared<se::gfx::Renderer>(game.get_window(), core_shader);

include/simpleengine/gfx/texture.h

@@ -12,12 +12,6 @@
 
 #include <glm/glm.hpp>
 
-#ifdef __linux__
-#include <SOIL2.h>
-#else
-#include <SOIL2/SOIL2.h>
-#endif
-
 #include <stdexcept>
 #include <vector>
 #include <iostream>
@@ -75,6 +69,7 @@ namespace simpleengine::gfx {
         Texture(std::vector<unsigned char> buffer, bool img_2d = true, bool mipmap = true);
 
         void bind() const;
+        void unbind() const;
 
         unsigned int get_texture_id() const;
     };

src/gfx/texture.cpp

@@ -1,5 +1,8 @@
 #include "gfx/texture.h"
 
+#define STB_IMAGE_IMPLEMENTATION
+#include "stb_image.h"
+
 namespace simpleengine::gfx {
     Texture::Texture(const char* path, bool img_2d, bool mipmap) {
         image_type = img_2d ? GL_TEXTURE_2D : GL_TEXTURE_3D;
@@ -12,17 +15,14 @@ namespace simpleengine::gfx {
         glTexParameteri(image_type, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
         glTexParameteri(image_type, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 
-        img_data = SOIL_load_image
-        (
-            path,
-            &width, &height, &channels,
-            SOIL_LOAD_RGBA
-        );
-
-        if (!img_data) {
-            std::cerr << "Failed to load texture from memory! (" << SOIL_last_result() << ")" << std::endl;
+        // Read 4 channels (RGBA)   
+        img_data = stbi_load(path, &width, &height, &channels, 4);
+        if(!img_data) {
+            const char* failure = stbi_failure_reason();
+            std::cerr << "Failed to load texture! (" << failure << ")" << std::endl;
             throw std::runtime_error("Failed to load texture from memory!");
         }
+        std::cout << "Loaded image with a width of " << width << "px, a height of " << height << "px and " << channels << " channels" << std::endl;
 
         glTexImage2D(image_type, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, img_data);
         
@@ -30,7 +30,6 @@ namespace simpleengine::gfx {
             glGenerateMipmap(image_type);
         }
 
-        SOIL_free_image_data(img_data);
         glBindTexture(image_type, 0);
     }
 
@@ -52,18 +51,15 @@ namespace simpleengine::gfx {
         glTexParameteri(image_type, GL_TEXTURE_WRAP_T, GL_REPEAT);
         glTexParameteri(image_type, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
         glTexParameteri(image_type, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-        
-        img_data = SOIL_load_image_from_memory
-        (
-            buffer, buffer_length,
-            &width, &height, &channels,
-            SOIL_LOAD_RGBA
-        );
 
-        if (!img_data) {
-            std::cerr << "Failed to load texture from memory! (" << SOIL_last_result() << ")" << std::endl;
+        // Read 4 channels (RGBA)
+        img_data = stbi_load_from_memory(buffer, buffer_length, &width, &height, &channels, 4);
+        if(!img_data) {
+            const char* failure = stbi_failure_reason();
+            std::cerr << "Failed to load texture! (" << failure << ")" << std::endl;
             throw std::runtime_error("Failed to load texture from memory!");
         }
+        std::cout << "Loaded image with a width of " << width << "px, a height of " << height << "px and " << channels << " channels" << std::endl;
 
         glTexImage2D(image_type, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, img_data);
         
@@ -71,7 +67,6 @@ namespace simpleengine::gfx {
             glGenerateMipmap(image_type);
         }
 
-        SOIL_free_image_data(img_data);
         glBindTexture(image_type, 0);
     }
 
@@ -91,6 +86,10 @@ namespace simpleengine::gfx {
         glBindTexture(image_type, texture_id);
     }
 
+    void Texture::unbind() const {
+        glBindTexture(image_type, 0);
+    }
+
     unsigned int Texture::get_texture_id() const {
         return texture_id;
     }