Initial independent commit

1 files changed, 81 insertions, 0 deletions

diff --git a/include/engine/rendering.h b/include/engine/rendering.h
new file mode 100644
index 0000000..3ec8416
--- /dev/null
+++ b/include/engine/rendering.h
@@ -0,0 +1,81 @@
+#ifndef RENDERING_H
+#define RENDERING_H
+
+#include "types.h"
+#include "vector.h"
+
+/* Definitions */
+#define RGBA(_r,_g,_b,_a) ((Engine_color){.r=_r, .g=_g, .b=_b, .a=_a})
+#define RGB(_r,_g,_b) RGBA(_r,_g,_b,0xFF)
+
+/* Types */
+typedef struct {
+  u8 r;
+  u8 g;
+  u8 b;
+  u8 a;
+} Engine_color;
+
+typedef struct {
+  u32    texture_id;
+  v2_i32 coord;
+} Sprite;
+
+#include "ui.h"
+#include "engine.h"
+
+/* Rendering functions */
+void render_begin(Window *w);
+void render_present(Window *w);
+void drawcall_reset(void);
+void render(Window *w);
+
+/* Misc */
+void engine_window_resize_pointers(i32* w, i32* h);
+void engine_window_resize_pointers_reset(void);
+
+/* UI rendering */
+/* See rendering_ui.c for implementation */
+i64 engine_render_text(i32 font_id, Engine_color fg, char *text, v2_i32 *size_out, bool wrapped);
+void engine_draw_uitree(UITree *t);
+void engine_draw_sprite(Sprite *s, v2_i32 *pos, f32 scale);
+void engine_draw_sprite_ex(Sprite *s, v2_i32 *pos, f32 scale, Engine_color colormod);
+
+Sprite sprite_new(u64 tid, u8 coord);
+
+#ifdef ENGINE_INTERNALS
+#include "engine.h"
+
+#define TEXTURES_INCREMENT 512
+
+typedef enum {
+	RenderDrawCallType_UITree,
+	/*RenderDrawCallType_UIButton,*/
+	RenderDrawCallType_Text,
+	RenderDrawCallType_Sprite,
+} RenderDrawCallType;
+
+typedef struct {
+	RenderDrawCallType type;
+	union {
+		void *data;
+		struct {
+			Sprite *sprite;
+			i32 x; i32 y;
+			f32 scale;
+			SDL_Color mod;
+		} sprite;
+	} data;
+} RenderDrawCall;
+
+void render_uitree(Window *w, UITree *t);
+
+void render_container(Window *w, UITree_container *t);
+void render_button(Window *w, UITree_button *t);
+void render_title(Window *w, UITree_title *t);
+void render_text(Window *w, UITree_text *t);
+v2_i32 elem_size(UITree *root);
+
+#endif
+
+#endif