add sponza demo

demos/99-sponza.c

@@ -0,0 +1,60 @@
+// render sponza
+
+#include "v4k.h"
+
+int main() {
+    window_create(80, WINDOW_MSAA8);
+    window_title(__FILE__);
+
+    // load all fx files
+    fx_load("fx**.fs");
+
+    // load skybox
+    skybox_t sky = skybox(flag("--mie") ? 0 : "cubemaps/stardust", 0); // --mie for rayleigh/mie scattering
+
+    // load static scene
+    model_t sponza;
+    sponza = model("sponza.obj", 0); // MODEL_NO_TEXTURES);
+    translation44(sponza.pivot, 0,-1,0);
+    rotate44(sponza.pivot, -90,1,0,0);
+    scale44(sponza.pivot, 10,10,10);
+
+    // camera
+    camera_t cam = camera();
+    cam.speed = 0.2f;
+
+    // demo loop
+    while (window_swap())
+    {
+        // input
+        if( input_down(KEY_ESC) ) break;
+        if( input_down(KEY_F5) ) window_reload();
+        if( input_down(KEY_F11) ) window_fullscreen( window_has_fullscreen() ^ 1 );
+        if( input_down(KEY_X) ) window_screenshot(__FILE__ ".png");
+        if( input_down(KEY_Z) ) window_record(__FILE__ ".mp4");
+
+        // fps camera
+        bool active = ui_active() || ui_hover() || gizmo_active() ? false : input(MOUSE_L) || input(MOUSE_M) || input(MOUSE_R);
+        if( active ) cam.speed = clampf(cam.speed + input_diff(MOUSE_W) / 10, 0.05f, 5.0f);
+        vec2 mouse = scale2(vec2(input_diff(MOUSE_X), -input_diff(MOUSE_Y)), 0.2f * active);
+        vec3 wasdecq = scale3(vec3(input(KEY_D)-input(KEY_A),input(KEY_E)-(input(KEY_C)||input(KEY_Q)),input(KEY_W)-input(KEY_S)), cam.speed);
+        camera_move(&cam, wasdecq.x,wasdecq.y,wasdecq.z);
+        camera_fps(&cam, mouse.x,mouse.y);
+        window_cursor( !active );
+
+        // draw skybox
+        profile("Skybox") {
+            skybox_render(&sky, cam.proj, cam.view);
+        }
+
+        // apply post-fxs from here
+        fx_begin();
+
+        float scale = 1.00;
+        mat44 M; copy44(M, sponza.pivot); translate44(M, 0,0,0); scale44(M, scale,scale,scale);
+        model_render(sponza, cam.proj, cam.view, M, 0);
+
+        // post-fxs end here
+        fx_end();
+    }
+}