src: add a basic OpenGL2.1 foundation

Just a bunch of shit that doesn't really do much more than produce
an executable yet.

1 files changed, 52 insertions, 0 deletions

diff --git a/src/sars.h b/src/sars.h
new file mode 100644
index 0000000..39675e5
--- /dev/null
+++ b/src/sars.h
@@ -0,0 +1,52 @@
+/*
+ *  Copyright (C) 2020 - Vito Caputo - <vcaputo@pengaru.com>
+ *
+ *  This program is free software: you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License version 3 as published
+ *  by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _SARS_H
+#define _SARS_H
+
+#include <SDL.h>
+
+#include <stage.h>
+
+#include "m4f.h"
+
+typedef enum sars_context_t {
+	SARS_CONTEXT_SARS,
+	SARS_CONTEXT_HUNGRYCAT,
+	SARS_CONTEXT_GAME,
+	SARS_CONTEXT_CNT
+} sars_context_t;
+
+typedef struct sars_t {
+	SDL_Window	*window;
+	SDL_GLContext	*gl;
+	stage_t		*stage;
+	unsigned	window_width, window_height;
+	unsigned	windowed:1;
+} sars_t;
+
+void sars_canvas_size(sars_t *sars, int *res_width, int *res_height);
+void sars_canvas_to_ndc(sars_t *sars, int x, int y, float *res_x, float *res_y);
+void sars_canvas_from_ndc(sars_t *sars, float x, float y, int *res_x, int *res_y);
+void sars_viewport_size(sars_t *sars, int *res_width, int *res_height);
+void sars_viewport_to_ndc(sars_t *sars, int x, int y, float *res_x, float *res_y);
+void sars_viewport_from_ndc(sars_t *sars, float x, float y, int *res_x, int *res_y);
+uint32_t sars_viewport_id(sars_t *sars);
+void sars_toggle_fullscreen(sars_t *sars);
+void sars_render(play_t *play, void *context);
+void sars_dispatch(play_t *play, void *context, SDL_Event *event);
+
+#endif