Update comments; Typedefs

2 files changed, 86 insertions, 85 deletions

diff --git a/reduced_system_layer.c b/reduced_system_layer.c
index 3d2996e..f50bf45 100755
--- a/reduced_system_layer.c
+++ b/reduced_system_layer.c
@@ -44,7 +44,6 @@
 #/    - Clipboard
 #/      - Images - BMP, PPM
 #/      - Sound - WAV
-#/    - Logging
 #/    - Graphics perf - request cache
 #/      Requires:
 #/      + [ ] Graphics tests
@@ -60,8 +59,10 @@
 #/      - Labyrinth
 #/      - Chat
 #/    - Graphics
+#/      - Custom fonts - integrate stb_truetype.h
 #/      - UI
 #/      - Icons
+#/      - Folder widget
 #/    - Cross-platform networking - UDP + TCP + WebSocket
 #/      Requires:
 #/      - [ ] Sockets - UDP, TCP
@@ -77,11 +78,14 @@
 #/      - Improve microbenchmarks library
 #/      - Parsing
 #/      - Printing
+#/      - Logging
+#/      - Terminal colors
 #/      - Big integer
 #/      - Mersenne Twister 64
 #/      - Arithmetic coding
 #/    - Graphics
 #/      - Vector math
+#/      - Bezier curves
 #/      - CMYK color
 #/      - Textures
 #/      - Vulkan boilerplate
@@ -198,18 +202,21 @@ typedef unsigned char      b8;
 typedef float              f32;
 typedef double             f64;
 
-typedef struct { f64 x, y;       } vec2;
-typedef struct { f64 x, y, z;    } vec3;
-typedef struct { f64 x, y, z, w; } vec4;
-typedef struct { f32 x, y;       } vec2_f32;
-typedef struct { f32 x, y, z;    } vec3_f32;
-typedef struct { f32 x, y, z, w; } vec4_f32;
-typedef struct { i64 x, y;       } vec2_i64;
-typedef struct { i64 x, y, z;    } vec3_i64;
-typedef struct { i64 x, y, z, w; } vec4_i64;
-typedef struct { f64 v[ 4];      } mat2;
-typedef struct { f64 v[ 9];      } mat3;
-typedef struct { f64 v[16];      } mat4;
+typedef union { struct { f64 v[ 2]; }; struct { f64 x, y;       }; } vec2;
+typedef union { struct { f64 v[ 3]; }; struct { f64 x, y, z;    }; } vec3;
+typedef union { struct { f64 v[ 4]; }; struct { f64 x, y, z, w; }; } vec4;
+typedef union { struct { f32 v[ 2]; }; struct { f32 x, y;       }; } vec2_f32;
+typedef union { struct { f32 v[ 3]; }; struct { f32 x, y, z;    }; } vec3_f32;
+typedef union { struct { f32 v[ 4]; }; struct { f32 x, y, z, w; }; } vec4_f32;
+typedef union { struct { i64 v[ 2]; }; struct { i64 x, y;       }; } vec2_i64;
+typedef union { struct { i64 v[ 3]; }; struct { i64 x, y, z;    }; } vec3_i64;
+typedef union { struct { i64 v[ 4]; }; struct { i64 x, y, z, w; }; } vec4_i64;
+typedef union { struct { f64 v[ 4]; }; struct { f64 m[2][2];    }; } mat2;
+typedef union { struct { f64 v[ 9]; }; struct { f64 m[3][3];    }; } mat3;
+typedef union { struct { f64 v[16]; }; struct { f64 m[4][4];    }; } mat4;
+typedef union { struct { f32 v[ 4]; }; struct { f32 m[2][2];    }; } mat2_f32;
+typedef union { struct { f32 v[ 9]; }; struct { f32 m[3][3];    }; } mat3_f32;
+typedef union { struct { f32 v[16]; }; struct { f32 m[4][4];    }; } mat4_f32;
 
 #endif // TYPES_HEADER_GUARD_
 
@@ -320,6 +327,7 @@ i32 main(i32 argc, c8 **argv);
 #define PRIMARY_SOUND_SAMPLE_RATE 44100
 #endif
 
+//  FIXME: Implement dynamic primary sound buffer.
 #ifndef MAX_NUM_PRIMARY_SOUND_FRAMES
 #define MAX_NUM_PRIMARY_SOUND_FRAMES (10 * PRIMARY_SOUND_SAMPLE_RATE * NUM_PRIMARY_SOUND_CHANNELS)
 #endif
@@ -611,14 +619,17 @@ typedef struct {
   i32 frame_height;
   f64 pixel_size;
   i32 antialiasing_scale;
-  b8  exact_resolution  : 1;
-  b8  graceful_shutdown : 1;
-
-  b8  done          : 1;
-  b8  has_focus     : 1;
-  b8  has_cursor    : 1;
-  b8  files_dragged : 1;
-  b8  files_dropped : 1;
+  b8  exact_resolution       : 1;
+  b8  graceful_shutdown      : 1;
+  b8  enable_clipboard_text  : 1;
+  b8  enable_clipboard_image : 1;
+  b8  enable_clipboard_sound : 1;
+
+  b8  done                   : 1;
+  b8  has_focus              : 1;
+  b8  has_cursor             : 1;
+  b8  files_dragged          : 1;
+  b8  files_dropped          : 1;
   i32 real_width;
   i32 real_height;
   i32 cursor_x;
@@ -688,6 +699,7 @@ void handle_primary_sound(void);
 void queue_primary_sound(i64 delay_in_samples, i64 num_samples, f32 *frames);
 
 //  Networking
+b8  network_open(u16 slot, Network_Address address, u16 *local_port);
 i64 network_recv(u16 slot, Network_Address address, i64 size, u8 *data, u16 *local_port, Network_Address *remote_address);
 i64 network_send(u16 slot, Network_Address address, i64 size, u8 *data, u16 *local_port);
 
@@ -1438,7 +1450,7 @@ static i64 average_frame_duration_(i64 duration) {
   for (i64 i = 0; i < NUM_FRAMES_AVERAGED; ++i)
     durs[i] = _frame_duration[i];
 
-  //  FIXME: Use better sorting algorithm, e.g. merge sort.
+  //  FIXME, PERF: Use better sorting algorithm, e.g. merge sort.
   for (i64 i = 0; i < (i64) NUM_FRAMES_AVERAGED; ++i)
     for (i64 j = i + 1; j < NUM_FRAMES_AVERAGED; ++j)
       if (durs[i] < durs[j]) {
@@ -1591,6 +1603,10 @@ static void convert_pixels_for_window_(void) {
   }
 
   //  Downscale pixels from vec4_f32 pixel buffer to internal u32 pixel buffer.
+  //
+  //  FIXME, PERF: - Read all pixels sequentially, store the intermediate
+  //                 sum for each row in a temporary buffer.
+  //               - Check if the scale is 1:1.
   {
     i64 dst_width  = g_platform.frame_width  / aa_scale;
     i64 dst_height = g_platform.frame_height / aa_scale;
@@ -1814,7 +1830,7 @@ static void network_cleanup_(void) {
   resize_dynamic_array_exact(&_num_sockets, (void **) &_sockets, sizeof *_sockets, 0);
 }
 
-static b8 network_open_(u16 slot, Network_Address address, u16 *local_port) {
+b8 network_open(u16 slot, Network_Address address, u16 *local_port) {
   network_init_(slot);
 
   b8 change_address =
@@ -1893,11 +1909,11 @@ static b8 network_open_(u16 slot, Network_Address address, u16 *local_port) {
 i64 network_recv(u16 slot, Network_Address address, i64 size, u8 *data, u16 *local_port, Network_Address *remote_address) {
   if (address.protocol != IPv4_UDP && address.protocol != IPv6_UDP) {
     LOG_ERROR("Invalid address protocol: %d", (i32) (u32) address.protocol);
-    return 0;
+    return -1;
   }
 
-  if (!network_open_(slot, address, local_port))
-    return 0;
+  if (!network_open(slot, address, local_port))
+    return -1;
   if (size <= 0)
     return 0;
 
@@ -1929,7 +1945,7 @@ i64 network_recv(u16 slot, Network_Address address, i64 size, u8 *data, u16 *loc
       return 0;
 
     LOG_ERROR("recvfrom failed (errno %d).", errno);
-    return 0;
+    return -1;
   }
 
   if (remote_address != NULL) {
@@ -1951,14 +1967,14 @@ i64 network_recv(u16 slot, Network_Address address, i64 size, u8 *data, u16 *loc
 i64 network_send(u16 slot, Network_Address address, i64 size, u8 *data, u16 *local_port) {
   if (address.protocol != IPv4_UDP && address.protocol != IPv6_UDP) {
     LOG_ERROR("Invalid address protocol: %d", (i32) (u32) address.protocol);
-    return 0;
+    return -1;
   }
 
   Network_Address local_address = address;
   local_address.port       = 0;
 
-  if (!network_open_(slot, local_address, local_port))
-    return 0;
+  if (!network_open(slot, local_address, local_port))
+    return -1;
   if (size <= 0)
     return 0;
 
@@ -1998,7 +2014,7 @@ i64 network_send(u16 slot, Network_Address address, i64 size, u8 *data, u16 *loc
       return 0;
 
     LOG_ERROR("sendto failed (errno %d).", errno);
-    return 0;
+    return -1;
   }
 
   return sent;
@@ -3057,6 +3073,16 @@ void shutdown_all_systems(void) {
   resize_dynamic_array_exact(&g_platform.clipboard_text_len, (void **) &g_platform.clipboard_text, 1,               0);
 }
 
+void request_clipboard_(void) {
+  if (_requested_clipboard)
+    return;
+  if (!g_platform.enable_clipboard_text && !g_platform.enable_clipboard_image && !g_platform.enable_clipboard_sound)
+    return;
+
+  XConvertSelection(_display, _clipboard, _targets, _clipboard, _window, CurrentTime);
+  _requested_clipboard = 1;
+}
+
 i32 handle_main_window_events(void) {
   if (_display == NULL)
     return 0;
@@ -3120,10 +3146,6 @@ i32 handle_main_window_events(void) {
           case Button5 + 2: g_platform.wheel_dx += MOUSE_WHEEL_FACTOR; break;
           default:;
         }
-        if (!_requested_clipboard) {
-          XConvertSelection(_display, _clipboard, _targets, _clipboard, _window, CurrentTime);
-          _requested_clipboard = 1;
-        }
         break;
 
       case ButtonRelease:
@@ -3187,11 +3209,6 @@ i32 handle_main_window_events(void) {
               };
           }
         }
-
-        if (!_requested_clipboard) {
-          XConvertSelection(_display, _clipboard, _targets, _clipboard, _window, CurrentTime);
-          _requested_clipboard = 1;
-        }
       } break;
 
       case KeyRelease: {
@@ -3390,33 +3407,41 @@ i32 handle_main_window_events(void) {
                 break;
               }
 
-            if (target_text != None)
+            if (g_platform.enable_clipboard_text && target_text != None)
               XConvertSelection(_display, _clipboard, target_text, _clipboard, _window, CurrentTime);
 
-            if (target_image != None)
+            if (g_platform.enable_clipboard_image && target_image != None)
               XConvertSelection(_display, _clipboard, target_image, _clipboard, _window, CurrentTime);
 
-            if (target_sound != None)
+            if (g_platform.enable_clipboard_sound && target_sound != None)
               XConvertSelection(_display, _clipboard, target_sound, _clipboard, _window, CurrentTime);
 
             if (target_text == None && target_image == None && target_sound == None)
               _requested_clipboard = 0;
           } else if (ev.xselection.target == XA_STRING || ev.xselection.target == _text_plain || ev.xselection.target == _utf8_string) {
-            resize_dynamic_array_exact(&g_platform.clipboard_text_len, (void **) &g_platform.clipboard_text, 1, len + 1);
-            mem_cpy_(g_platform.clipboard_text, data, len);
-            g_platform.clipboard_text[len] = '\0';
+            if (g_platform.enable_clipboard_text) {
+              resize_dynamic_array_exact(&g_platform.clipboard_text_len, (void **) &g_platform.clipboard_text, 1, len + 1);
+              mem_cpy_(g_platform.clipboard_text, data, len);
+              g_platform.clipboard_text[len] = '\0';
+            }
             _requested_clipboard = 0;
           } else if (ev.xselection.target == _image_bmp) {
-            //  TODO
-            LOG_ERROR("Receive BMP image - not implemented.");
+            if (g_platform.enable_clipboard_image) {
+              //  TODO
+              LOG_ERROR("Receive BMP image - not implemented.");
+            }
             _requested_clipboard = 0;
           } else if (ev.xselection.target == _image_ppm) {
-            //  TODO
-            LOG_ERROR("Receive PPM image - not implemented.");
+            if (g_platform.enable_clipboard_image) {
+              //  TODO
+              LOG_ERROR("Receive PPM image - not implemented.");
+            }
             _requested_clipboard = 0;
           } else if (ev.xselection.target == _audio_wav) {
-            //  TODO
-            LOG_ERROR("Receive WAV audio - not implemented.");
+            if (g_platform.enable_clipboard_sound) {
+              //  TODO
+              LOG_ERROR("Receive WAV audio - not implemented.");
+            }
             _requested_clipboard = 0;
           }
 
@@ -3432,10 +3457,7 @@ i32 handle_main_window_events(void) {
 
       case FocusIn:
         g_platform.has_focus = 1;
-        if (!_requested_clipboard) {
-          XConvertSelection(_display, _clipboard, _targets, _clipboard, _window, CurrentTime);
-          _requested_clipboard = 1;
-        }
+        request_clipboard_();
         break;
 
       case MappingNotify:
@@ -3601,6 +3623,7 @@ void render_main_window_frame(void) {
 
   if (!_mapped) {
     XMapWindow(_display, _window);
+    request_clipboard_();
     _mapped = 1;
   }
 
@@ -3860,6 +3883,11 @@ void shutdown_all_systems(void) {
   g_platform.done = 1;
 }
 
+b8 network_open(u16 slot, Network_Address address, u16 *local_port) {
+  LOG_ERROR("Web sockets are not implemented.");
+  return 0;
+}
+
 i64 network_recv(u16 slot, Network_Address address, i64 size, u8 *data, u16 *local_port, Network_Address *remote_address) {
   LOG_ERROR("Web sockets are not implemented.");
   return 0;
@@ -4141,7 +4169,7 @@ __attribute__((export_name("js_clipboard_text_len"))) i32 js_clipboard_text_len(
 }
 
 __attribute__((export_name("js_clipboard_text"))) void *js_clipboard_text(i32 len) {
-  if (len < 0)
+  if (!g_platform.enable_clipboard_text && len < 0)
     len = 0;
   resize_dynamic_array_exact(&g_platform.clipboard_text_len, (void **) &g_platform.clipboard_text, 1, len);
   return g_platform.clipboard_text;
diff --git a/test.c b/test.c
index 51f0051..9d61923 100644
--- a/test.c
+++ b/test.c
@@ -49,38 +49,13 @@
 
 #if !defined(__wasm__)
 
-#ifndef TYPES_HEADER_GUARD_
-#define TYPES_HEADER_GUARD_
-
-typedef signed char        i8;
-typedef signed short       i16;
 typedef signed             i32;
 typedef signed long long   i64;
-typedef unsigned char      u8;
-typedef unsigned short     u16;
 typedef unsigned           u32;
 typedef unsigned long long u64;
 typedef char               c8;
-typedef int                c32;
-typedef unsigned char      b8;
-typedef float              f32;
 typedef double             f64;
 
-typedef struct { f64 x, y;       } vec2;
-typedef struct { f64 x, y, z;    } vec3;
-typedef struct { f64 x, y, z, w; } vec4;
-typedef struct { f32 x, y;       } vec2_f32;
-typedef struct { f32 x, y, z;    } vec3_f32;
-typedef struct { f32 x, y, z, w; } vec4_f32;
-typedef struct { i64 x, y;       } vec2_i64;
-typedef struct { i64 x, y, z;    } vec3_i64;
-typedef struct { i64 x, y, z, w; } vec4_i64;
-typedef struct { f64 v[ 4];      } mat2;
-typedef struct { f64 v[ 9];      } mat3;
-typedef struct { f64 v[16];      } mat4;
-
-#endif // TYPES_HEADER_GUARD_
-
 //  ================================================================
 
 #ifndef TEST_HEADER_GUARD_
@@ -259,9 +234,7 @@ void bench_register(c8 const *name, c8 const *file, bench_run_fn fn);
 #define BENCHMARK_END           \
   } bench_end_(bench_index_); }
 
-//  FIXME
-//  Does this work reliably?
-//
+//  FIXME: Does this work reliably?
 #define DO_NOT_OPTIMIZE(x)            \
   do {                                \
     volatile void *bench_ptr_ = &(x); \