Added LoadTexture function

- Added stb_image for image loading

App/CMakeLists.txt

@@ -9,10 +9,15 @@ set(SOURCES
     Source/Shader.cpp
     Source/Renderer.h
     Source/Renderer.cpp
+    vendor/stb/stb_image.h
+    vendor/stb/stb_image.cpp
 )
 
 # Add the executable target
 add_executable(App ${SOURCES})
+
 target_link_libraries(App glfw)
 target_link_libraries(App glad)
 target_link_libraries(App glm)
+
+target_include_directories(App PRIVATE vendor/stb)

App/Source/Renderer.cpp

@@ -2,6 +2,8 @@
 
 #include <iostream>
 
+#include "stb_image.h"
+
 Texture CreateTexture(int width, int height)
 {
 	Texture result;
@@ -21,6 +23,44 @@ Texture CreateTexture(int width, int height)
 	return result;
 }
 
+Texture LoadTexture(const std::filesystem::path& path)
+{
+	int width, height, channels;
+	std::string filepath = path.string();
+	unsigned char* data = stbi_load(filepath.c_str(), &width, &height, &channels, 0);
+
+	if (!data)
+	{
+		std::cerr << "Failed to load texture: " << filepath << "\n";
+		return {};
+	}
+
+	GLenum format = channels == 4 ? GL_RGBA :
+		channels == 3 ? GL_RGB :
+		channels == 1 ? GL_RED : 0;
+
+	Texture result;
+	result.Width = width;
+	result.Height = height;
+
+	glCreateTextures(GL_TEXTURE_2D, 1, &result.Handle);
+
+	glTextureStorage2D(result.Handle, 1, (format == GL_RGBA ? GL_RGBA8 : GL_RGB8), width, height);
+	
+	glTextureSubImage2D(result.Handle, 0, 0, 0, width, height, format, GL_UNSIGNED_BYTE, data);
+
+	glTextureParameteri(result.Handle, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+	glTextureParameteri(result.Handle, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+	glTextureParameteri(result.Handle, GL_TEXTURE_WRAP_S, GL_REPEAT);
+	glTextureParameteri(result.Handle, GL_TEXTURE_WRAP_T, GL_REPEAT);
+
+	glGenerateTextureMipmap(result.Handle);
+	stbi_image_free(data);
+
+	return result;
+}
+
 Framebuffer CreateFramebufferWithTexture(const Texture texture)
 {
 	Framebuffer result;

App/Source/Renderer.h

@@ -4,6 +4,8 @@
 #define GLFW_INCLUDE_NONE
 #include <GLFW/glfw3.h>
 
+#include <filesystem>
+
 struct Texture
 {
 	GLuint Handle = 0;
@@ -18,6 +20,7 @@ struct Framebuffer
 };
 
 Texture CreateTexture(int width, int height);
+Texture LoadTexture(const std::filesystem::path& path);
 Framebuffer CreateFramebufferWithTexture(const Texture texture);
 bool AttachTextureToFramebuffer(Framebuffer& framebuffer, const Texture texture);
 void BlitFramebufferToSwapchain(const Framebuffer framebuffer);

App/vendor/stb/stb_image.cpp

@@ -0,0 +1,2 @@
+#define STB_IMAGE_IMPLEMENTATION
+#include "stb_image.h"