Initial upload

source/main.c

@@ -0,0 +1,140 @@
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <svpng.inc>
+#include <omp.h>
+#include <math.h>
+
+#include "MaterialExtra.h"
+#include "Rendering/Scene.h"
+#include "Algorithm/BSDF.h"
+#include "Material.h"
+#include "Triangle.h"
+#include "Geometry.h"
+
+
+static inline void save_img(render_target_t* source, const uint32_t width, const uint32_t height, const char* filename)
+{
+    FILE* fileStream;
+    fopen_s(&fileStream, filename, "wb");
+    if (fileStream == NULL)
+    {
+        fprintf(stderr, "Failed to open file for writing: %s\n", filename);
+        return;
+    }
+
+    unsigned char* img = (unsigned char*)malloc((size_t)width * height * 4);
+    if (img == NULL)
+    {
+        fprintf(stderr, "Failed to allocate memory for image\n");
+        return;
+    }
+
+    for (uint32_t y = 0; y < height; y++)
+    {
+        for (uint32_t x = 0; x < width; x++)
+        {
+            size_t index = ((size_t)y * width + x) * (size_t)4.0;
+            vec4s color = render_target_get_pixel(source, x, y);
+
+            img[index] = (unsigned char)fminf(color.x * 255.0f, 255.0f);
+            img[index + 1] = (unsigned char)fminf(color.y * 255.0f, 255.0f);
+            img[index + 2] = (unsigned char)fminf(color.z * 255.0f, 255.0f);
+            img[index + 3] = (unsigned char)fminf(color.w * 255.0f, 255.0f);
+        }
+    }
+
+    svpng(fileStream, width, height, img, 1);
+    fclose(fileStream);
+    free(img);
+}
+
+int main()
+{
+    omp_set_num_threads(24);
+
+    const int SAMPLE_COUNT = 256;
+
+    const uint32_t WIDTH = 640;
+    const uint32_t HEIGHT = 360;
+
+    scene_t scene = scene_create(64, 4);
+
+    simple_lit_data_t gray_lit_data = {
+        .albedo = (vec3s){0.73f, 0.73f, 0.73f},
+        .roughness = 1.0f,
+        .metallic = 0.0f,
+    };
+    simple_lit_data_t blue_lit_data = {
+        .albedo = (vec3s){0.0f, 0.0f, 1.0f},
+        .roughness = 0.5f,
+        .metallic = 1.0f,
+    };
+    material_t top_light_material = material_create_simple_lit(&gray_lit_data, &scene.materials);
+    material_t gray_material = material_create_simple_lit(&gray_lit_data, &scene.materials);
+    material_t blue_material = material_create_simple_lit(&blue_lit_data, &scene.materials);
+
+    scene.materials.buffer[top_light_material.id].emission = (vec3s){4.0f, 4.0f, 4.0f};
+
+    quad_create(
+        (vec3s){0.0f, 1.95f, 0.0f},
+        (vec3s){0.0f, -1.0f, 0.0f},
+        (vec3s){0.0f, 0.0f, 1.0f},
+        1.0f, top_light_material.id, &scene.triangles
+    );
+
+    triangle_create(
+        (vec3s){-1.0f, -1.0f, 0.0f},
+        (vec3s){1.0f, -1.0f, 0.0f},
+        (vec3s){0.0f, 1.0f, 0.0f},
+        gray_material.id, &scene.triangles
+    );
+
+    quad_create(
+        (vec3s){0.0f, -2.0f, 0.0f},
+        (vec3s){0.0f, 1.0f, 0.0f},
+        (vec3s){0.0f, 0.0f, 1.0f},
+        4.0f, blue_material.id, &scene.triangles
+    );
+    quad_create(
+        (vec3s){0.0f, 2.0f, 0.0f},
+        (vec3s){0.0f, -1.0f, 0.0f},
+        (vec3s){0.0f, 0.0f, 1.0f},
+        4.0f, gray_material.id, &scene.triangles
+    );
+    quad_create(
+        (vec3s){0.0f, 0.0f, -2.0f},
+        (vec3s){0.0f, 0.0f, 1.0f},
+        (vec3s){0.0f, 1.0f, 0.0f},
+        4.0f, gray_material.id, &scene.triangles
+    );
+    quad_create(
+        (vec3s){-2.0f, 0.0f, 0.0f},
+        (vec3s){1.0f, 0.0f, 0.0f},
+        (vec3s){0.0f, 1.0f, 0.0f},
+        4.0f, gray_material.id, &scene.triangles
+    );
+    quad_create(
+        (vec3s){2.0f, 0.0f, 0.0f},
+        (vec3s){-1.0f, 0.0f, 0.0f},
+        (vec3s){0.0f, 1.0f, 0.0f},
+        4.0f, gray_material.id, &scene.triangles
+    );
+
+    rendering_config_t config = {
+        .width = WIDTH,
+        .height = HEIGHT,
+        .sample_count = SAMPLE_COUNT,
+        .max_depth = 4,
+        .tile_size = 16,
+    };
+
+    render_target_t img = scene_render(&scene, config);
+
+    save_img(&img, WIDTH, HEIGHT, "output.png");
+
+    render_target_free(&img);
+    scene_free(&scene);
+
+    return 0;
+}