fix mixing up of SDL and libc allocators, proper flushing of quad build buffers

apps/demos/bunnymark/game.c

@@ -66,7 +66,7 @@ void game_tick(void)
     { // First tick, initalizing data
         // Allocating State struct to store data there
         if (!ctx.udata)
-            ctx.udata = ccalloc(1, sizeof(State));
+            ctx.udata = calloc(1, sizeof(State));
     }
 
     input_action("add_a_bit", CONTROL_LEFT_MOUSE);

apps/demos/platformer/game.c

@@ -12,7 +12,7 @@
 void game_tick(void) {
     if (ctx.initialization_needed) {
         if (!ctx.udata) {
-            ctx.udata = ccalloc(1, sizeof (State));
+            ctx.udata = calloc(1, sizeof (State));
 
             State *state = ctx.udata;
             state->ctx = &ctx;

apps/demos/platformer/player.c

@@ -203,7 +203,7 @@ static void calc_collisions_y(Player *player) {
 
 
 Player *player_create(World *world) {
-    Player *player = cmalloc(sizeof *player);
+    Player *player = malloc(sizeof *player);
 
     *player = (Player) {
         .world = world,

apps/demos/platformer/scenes/ingame.c

@@ -34,7 +34,7 @@ static void ingame_end(State *state) {
 Scene *ingame_scene(State *state) {
     (void)state;
 
-    SceneIngame *new_scene = ccalloc(1, sizeof *new_scene);
+    SceneIngame *new_scene = calloc(1, sizeof *new_scene);
     new_scene->base.tick = ingame_tick;
     new_scene->base.end = ingame_end;
 

apps/demos/platformer/scenes/title.c

@@ -5,9 +5,8 @@
 
 #include "twn_game_api.h"
 
-#include <SDL2/SDL.h>
-
 #include <stdio.h>
+#include <stdlib.h>
 
 
 static void title_tick(State *state) {
@@ -26,8 +25,9 @@ static void title_tick(State *state) {
     
     /* draw the tick count as an example of dynamic text */
     size_t text_str_len = snprintf(NULL, 0, "%llu", (unsigned long long)state->ctx->frame_number) + 1;
-    char *text_str = cmalloc(text_str_len);
+    char *text_str = malloc(text_str_len);
     snprintf(text_str, text_str_len, "%llu", (unsigned long long)state->ctx->frame_number);
+    free(text_str);
 
     const char *font = "fonts/kenney-pixel.ttf";
     float text_h = 32;
@@ -64,7 +64,7 @@ static void title_end(State *state) {
 Scene *title_scene(State *state) {
     (void)state;
 
-    SceneTitle *new_scene = ccalloc(1, sizeof *new_scene);
+    SceneTitle *new_scene = calloc(1, sizeof *new_scene);
     new_scene->base.tick = title_tick;
     new_scene->base.end = title_end;
 

apps/demos/platformer/world.c

@@ -45,7 +45,7 @@ static void drawdef_debug(struct World *world) {
 
 
 struct World *world_create(void) {
-    struct World *world = cmalloc(sizeof *world);
+    struct World *world = malloc(sizeof *world);
 
     *world = (struct World) {
         .tiles = NULL,
@@ -58,9 +58,9 @@ struct World *world_create(void) {
     /* create the tilemap */
     /* it simply stores what's in each tile as a 2d array */
     /* on its own, it's entirely unrelated to drawing or logic */
-    world->tilemap = cmalloc(sizeof *world->tilemap * world->tilemap_height);
+    world->tilemap = malloc(sizeof *world->tilemap * world->tilemap_height);
     for (size_t i = 0; i < world->tilemap_height; ++i) {
-        world->tilemap[i] = cmalloc(sizeof **world->tilemap * world->tilemap_width);
+        world->tilemap[i] = malloc(sizeof **world->tilemap * world->tilemap_width);
 
         for (size_t j = 0; j < world->tilemap_width; ++j) {
             world->tilemap[i][j] = TILE_TYPE_VOID;
@@ -81,7 +81,7 @@ struct World *world_create(void) {
     /* the tiles array contains data meant to be used by other logic */
     /* most importantly, it is used to draw the tiles */
     const size_t tile_count = world->tilemap_height * world->tilemap_width;
-    world->tiles = cmalloc(sizeof *world->tiles * tile_count);
+    world->tiles = malloc(sizeof *world->tiles * tile_count);
     update_tiles(world);
 
     return world;

apps/demos/scenery/game.c

@@ -14,11 +14,11 @@
 void game_tick(void) {
     if (ctx.initialization_needed) {
         if (!ctx.udata) {
-            ctx.udata = ccalloc(1, sizeof (State));
+            ctx.udata = calloc(1, sizeof (State));
 
             State *state = ctx.udata;
             state->ctx = &ctx;
-            state->scene = ingame_scene(state);
+            state->scene = title_scene(state);
         }
     }
 

apps/demos/scenery/scenes/ingame.c

@@ -13,7 +13,7 @@
 
 
 #define TERRAIN_FREQUENCY 0.15f
-#define TERRAIN_DISTANCE 100
+#define TERRAIN_DISTANCE 64
 #define HALF_TERRAIN_DISTANCE ((float)TERRAIN_DISTANCE / 2)
 #define PLAYER_HEIGHT 0.6f
 
@@ -237,7 +237,7 @@ static void ingame_end(State *state) {
 Scene *ingame_scene(State *state) {
     (void)state;
 
-    SceneIngame *new_scene = ccalloc(1, sizeof *new_scene);
+    SceneIngame *new_scene = calloc(1, sizeof *new_scene);
     new_scene->base.tick = ingame_tick;
     new_scene->base.end = ingame_end;
 

apps/demos/scenery/scenes/title.c

@@ -23,7 +23,7 @@ static void title_tick(State *state) {
 
     /* draw the tick count as an example of dynamic text */
     size_t text_str_len = snprintf(NULL, 0, "%llu", (unsigned long long)state->ctx->frame_number) + 1;
-    char *text_str = cmalloc(text_str_len);
+    char *text_str = malloc(text_str_len);
     snprintf(text_str, text_str_len, "%llu", (unsigned long long)state->ctx->frame_number);
 
     const char *font = "/fonts/kenney-pixel.ttf";
@@ -34,8 +34,8 @@ static void title_tick(State *state) {
         (Rect) {
             .x = 0,
             .y = 0,
-            .w = text_w,
+            .w = (float)text_w,
-            .h = text_h,
+            .h = (float)text_h,
         },
         (Color) { 0, 0, 0, 255 }
     );
@@ -53,7 +53,7 @@ static void title_end(State *state) {
 Scene *title_scene(State *state) {
     (void)state;
 
-    SceneTitle *new_scene = ccalloc(1, sizeof *new_scene);
+    SceneTitle *new_scene = calloc(1, sizeof *new_scene);
     new_scene->base.tick = title_tick;
     new_scene->base.end = title_end;
 

include/twn_util.h

@@ -18,12 +18,9 @@
 #define DEG2RAD (M_PI / 180)
 #define RAD2DEG (180 / M_PI)
 
+/* TODO: shouldn't be a thing */
 #ifndef TWN_NOT_C
 
-    TWN_API void *cmalloc(size_t size);
-    TWN_API void *crealloc(void *ptr, size_t size);
-    TWN_API void *ccalloc(size_t num, size_t size);
-
     TWN_API void log_info(const char *restrict format, ...);
     TWN_API void log_critical(const char *restrict format, ...);
     TWN_API void log_warn(const char *restrict format, ...);

src/rendering/twn_deferred_commands.h

@@ -43,7 +43,7 @@ typedef struct {
     TextureKey texture_key;
     GPUTexture gpu_texture;
 
-    /* could be either `element_count` with supplied `element_buffer`, or this, but not both */
+    /* could be either `element_count` with supplied `element_buffer`, or `primitive_count`, but not both */
     uint32_t primitive_count;
     uint32_t element_buffer;
     uint32_t element_count;

src/rendering/twn_gl_15_rendering.c

@@ -229,7 +229,8 @@ VertexBufferBuilder build_vertex_buffer(VertexBuffer buffer, size_t bytes) {
 
 
 void finish_vertex_builder(VertexBufferBuilder *builder) {
-    glUnmapBuffer(GL_ARRAY_BUFFER);
+    if (!glUnmapBuffer(GL_ARRAY_BUFFER))
+        CRY("finish_vertex_builder", "Error unmapping a vertex array buffer");
     glBindBuffer(GL_ARRAY_BUFFER, 0);
 
     builder->base = 0;

src/rendering/twn_gl_any_rendering.c

@@ -31,6 +31,7 @@ void delete_vertex_buffer(VertexBuffer buffer) {
 void specify_vertex_buffer(VertexBuffer buffer, void const *data, size_t bytes) {
     glBindBuffer(GL_ARRAY_BUFFER, buffer);
     glBufferData(GL_ARRAY_BUFFER, bytes, data, GL_STREAM_DRAW);
+    glBindBuffer(GL_ARRAY_BUFFER, 0);
 }
 
 

src/rendering/twn_rects.c

@@ -90,6 +90,8 @@ void render_rect_batch(const Primitive2D primitives[],
                 (Vec2){0}, (Vec2){0}, (Vec2){0}, (Vec2){0},
                 rect.color);
         }
+
+        finish_vertex_builder(&payload);
     }
 
     finally_render_quads(primitives, batch, vertex_array);

src/rendering/twn_sprites.c

@@ -244,6 +244,8 @@ void render_sprite_batch(const Primitive2D primitives[],
 
             push_quad_payload_to_vertex_buffer_builder(batch, i, &payload, v0, v1, v2, v3, uv0, uv1, uv2, uv3, sprite.color);
         }
+
+        finish_vertex_builder(&payload);
     }
 
     finally_render_quads(primitives, batch, vertex_array);

src/twn_util_c.h

@@ -11,6 +11,10 @@
 #define MAX SDL_max
 #define MIN SDL_min
 
+void *cmalloc(size_t size);
+void *crealloc(void *ptr, size_t size);
+void *ccalloc(size_t num, size_t size);
+
 void cry_impl(const char *file, const int line, const char *title, const char *text);
 #define CRY(title, text) cry_impl(__FILE__, __LINE__, title, text)
 #define CRY_SDL(title) cry_impl(__FILE__, __LINE__, title, SDL_GetError())