From f6686f1e86927f038086023362251ebe78ce5ad6 Mon Sep 17 00:00:00 2001
From: Bad Diode <bd@badd10de.dev>
Date: Wed, 2 Jun 2021 17:26:08 +0200
Subject: Init repo with basic BG framebuffer renderer

---
 src/main.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 src/main.c

(limited to 'src/main.c')

diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..e228034
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,81 @@
+/*
+Copyright (c) 2021 Bad Diode
+
+Permission to use, copy, modify, and distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE.
+*/
+
+#include "common.h"
+// #include "text.h"
+
+#include "interrupts.c"
+#include "filesystem.c"
+#include "renderer.c"
+
+//
+// Config parameters.
+//
+
+#ifdef PROF_ENABLE
+#if PROF_ENABLE == 0
+#define PROF(F,VAR) (profile_start(),(F),(VAR) = profile_stop())
+#elif PROF_ENABLE == 1
+#define PROF(F,VAR) (profile_start(),(F),(VAR) = MAX(profile_stop(), (VAR)))
+#endif
+#ifndef PROF_SHOW_X
+#define PROF_SHOW_X 0
+#endif
+#ifndef PROF_SHOW_Y
+#define PROF_SHOW_Y 0
+#endif
+#define PROF_SHOW() \
+    do { \
+        txt_position((PROF_SHOW_X), (PROF_SHOW_Y));\
+        txt_printf("EVAL:  %lu    ", eval_cycles);\
+        txt_position((PROF_SHOW_X), (PROF_SHOW_Y));\
+        txt_printf("FLIP:  %lu    ", flip_cycles);\
+    } while (0)
+#define PROF_INIT() \
+    u32 eval_cycles = 0;\
+    u32 flip_cycles = 0;
+#else
+#define PROF(F,VAR) (F)
+#define PROF_SHOW()
+#define PROF_INIT()
+#endif
+
+int main(void) {
+    // Adjust system wait times.
+    SYSTEM_WAIT = SYSTEM_WAIT_CARTRIDGE;
+
+    // Initialize filesystem.
+    fs_init();
+
+    // Initialize renderer.
+    renderer_init();
+
+    // Register interrupts.
+    irq_init();
+    irs_set(IRQ_VBLANK, irs_stub);
+
+    draw_pixel(0, 0, 1);
+    draw_pixel(0, 1, 2);
+    draw_pixel(0, 2, 3);
+    draw_pixel(0, 3, 4);
+
+    // Main loop.
+    PROF_INIT();
+    size_t frame_counter = 0;
+    while(true) {
+        bios_vblank_wait();
+        PROF_SHOW();
+        PROF(flip_buffer(), flip_cycles);
+        frame_counter++;
+    }
+
+    return 0;
+}
-- 
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