Changeset 683 for soft/giet_vm/applications/raycast/main.c

Timestamp:

Aug 3, 2015, 7:07:02 PM (9 years ago)

Author:

guerin

Message:

raycast: initial distributed implementation

The main task runs on processor (0,0,0). It manages game logic and
initialization, and participates in the rendering process.
The render task runs on all other processors. It tries to render a frame
slice when available, which is raycasting + pixel drawing for a pixel
column of the frame.

File:

• soft/giet_vm/applications/raycast/main.c (modified) (1 diff)

soft/giet_vm/applications/raycast/main.c

@@ -4 +4 @@
 #include <malloc.h>
 
+static volatile unsigned int    init_sync = 0;
+
 // Exported functions
+
+__attribute__((constructor)) void render()
+{
+    // Wait for main initialization
+    while (!init_sync);
+
+    Game *game = gameInstance();
+
+    // Render slices as soon as it's available
+    while (1) {
+        dispRenderSlice(game);
+    }
+}
 
 __attribute__((constructor)) void main()
 {
-        giet_tty_alloc(0);
-        giet_tty_printf("[RAYCAST] entering main()\n");
+    unsigned int w, h, p;
+    unsigned int i, j;
 
-        heap_init(0, 0);
-        dispInit();
+    giet_tty_alloc(0);
+    giet_tty_printf("[RAYCAST] entering main()\n");
+
+    // Initialize heap for each cluster
+    giet_procs_number(&w, &h, &p);
+    for (i = 0; i < w; i++)
+        for (j = 0; j < h; j++)
+            heap_init(i, j);
+
+    // Initialize game
+    dispInit();
+
+    init_sync = 1;
 
     while (1) {