Set C standard to C11 and add new assets

Changed CMakeLists.txt to set the C standard to C11.
Added multiple binary image files for new visual assets.
Added several new image files to enhance rendering capabilities.
Changed stb_image.h to improve support for various image formats.
Changed ray tracing engine to enhance ray creation and intersection.
Changed triangle structure to use a vertex array for better attribute handling.
Changed scene initialization to accommodate new texture management.

header/Material/Material.h

@@ -4,26 +4,33 @@
 #include "Algorithm/Sobol.h"
 #include "Common.h"
 
+#define PROPERTY_SIZE 64
+#define INVALID_MATERIAL_ID 255
+
 typedef struct
 {
     vec3s normal;
     vec3s position;
     vec3s wi;
     vec3s wo;
+    vec2s uv;
 } shading_context_t;
 
-typedef vec3s (*sample_bsdf_f)(const void* data, vec3s normal, vec3s wo, uint32_t index, uint32_t bounce, float* pdf_out);
-typedef float (*sample_bsdf_pdf_f)(const void* data, vec3s normal, vec3s wo, vec3s wi);
-typedef vec3s (*evaluate_bsdf_f)(const shading_context_t* context, const void* data);
+typedef void (*compute_surface_data_f)(const shading_context_t* context, const void* properties, void* surface_data_out);
+
+typedef vec3s (*sample_bsdf_f)(const shading_context_t* context, const void* properties, const compute_surface_data_f compute_surface_data, uint32_t index, uint32_t bounce, float* pdf_out);
+typedef float (*sample_bsdf_pdf_f)(const shading_context_t* context, const void* properties, const compute_surface_data_f compute_surface_data);
+typedef vec3s (*evaluate_bsdf_f)(const shading_context_t* context, const void* properties, const compute_surface_data_f compute_surface_data);
 
 typedef struct
 {
+    char properties[PROPERTY_SIZE];
     // TODO: alpha, displacement, etc.
     vec3s emission; // We have to have emission outside of data because data is only for bsdf, and emission is not part of bsdf. Maybe another shading properties struct is needed if the number of properties increases.
+    compute_surface_data_f compute_surface_data;
     sample_bsdf_f sample_bsdf;
     sample_bsdf_pdf_f sample_bsdf_pdf;
     evaluate_bsdf_f evaluate_bsdf;
-    void* data;
 } material_t;
 
 typedef struct
@@ -40,14 +47,14 @@ typedef struct
     material_t* buffer;
 } material_collection_t;
 
-bool material_collection_init(size_t size, material_collection_t* materials);
+bool material_collection_init(uint8_t size, material_collection_t* materials);
 void material_collection_resize(material_collection_t* materials, size_t size);
 void material_collection_free(material_collection_t* materials);
 
-material_entity_t material_create(sample_bsdf_f sample, sample_bsdf_pdf_f sample_pdf, evaluate_bsdf_f evaluate, void* data, size_t size_of_data, material_collection_t* collection);
+material_entity_t material_create(const void* properties, size_t properties_size, compute_surface_data_f surface_data, sample_bsdf_f sample, sample_bsdf_pdf_f sample_pdf, evaluate_bsdf_f evaluate, material_collection_t* collection);
 
-vec3s sample_material_bsdf(const material_t* material, vec3s normal, vec3s wo, uint32_t sample_index, uint32_t bounce, float* pdf_out);
-float sample_material_bsdf_pdf(const material_t* material, vec3s normal, vec3s wo, vec3s wi);
+vec3s sample_material_bsdf(const material_t* material, vec3s normal, vec3s wo, vec2s uv, uint32_t sample_index, uint32_t bounce, float* pdf_out);
+float sample_material_bsdf_pdf(const material_t* material, vec3s normal, vec3s wo, vec3s wi, vec2s uv);
 vec3s evaluate_material_bsdf(const material_t* material, const shading_context_t* context);
 
 #endif // MATERIAL_H

header/Material/SimpleLit.h

@@ -2,22 +2,41 @@
 #define SIMPLE_LIT_H
 
 #include "Material.h"
-#include "cglm/types-struct.h"
+#include "Rendering/Texture.h"
+#include "cglm/struct/vec3.h"
 
 typedef struct
 {
     vec3s albedo;
     float roughness;
     float metallic;
-}simple_lit_data_t;
+} simple_lit_data_t;
 
-vec3s sample_bsdf_simple_lit(const void* data, vec3s normal, vec3s wo, uint32_t sample_index, uint32_t bounce, float* pdf_out);
-vec3s evaluate_bsdf_simple_lit(const shading_context_t* context, const void* data);
-float sample_bsdf_pdf_simple_lit(const void* data, vec3s normal, vec3s wo, vec3s wi);
-
-inline material_entity_t material_create_simple_lit(simple_lit_data_t* lit_data, material_collection_t* collection)
+typedef struct
 {
-    return material_create(sample_bsdf_simple_lit, sample_bsdf_pdf_simple_lit, evaluate_bsdf_simple_lit, lit_data, sizeof(simple_lit_data_t), collection);
+    vec3s albedo;
+    float roughness;
+    float metallic;
+
+    const texture_t* albedo_texture;
+    const texture_t* roughness_texture;
+    const texture_t* metallic_texture;
+} simple_lit_properties_t;
+
+void simple_lit_data_default(const shading_context_t* context, const void* properties, void* data_out);
+
+vec3s sample_bsdf_simple_lit(const shading_context_t* context, const void* properties, const compute_surface_data_f compute_surface_data, uint32_t sample_index, uint32_t bounce, float* pdf_out);
+vec3s evaluate_bsdf_simple_lit(const shading_context_t* context, const void* properties, const compute_surface_data_f compute_surface_data);
+float sample_bsdf_pdf_simple_lit(const shading_context_t* context, const void* properties, const compute_surface_data_f compute_surface_data);
+
+inline material_entity_t material_create_simple_lit(const simple_lit_properties_t* properties, compute_surface_data_f surface_data, material_collection_t* collection)
+{
+    return material_create(properties, sizeof(simple_lit_properties_t), surface_data, sample_bsdf_simple_lit, sample_bsdf_pdf_simple_lit, evaluate_bsdf_simple_lit, collection);
+}
+
+inline material_entity_t material_create_simple_lit_default(const simple_lit_properties_t* properties, material_collection_t* collection)
+{
+    return material_create(properties, sizeof(simple_lit_properties_t), simple_lit_data_default, sample_bsdf_simple_lit, sample_bsdf_pdf_simple_lit, evaluate_bsdf_simple_lit, collection);
 }
 
 #endif // SIMPLE_LIT_H