From ce475472057daae9fba1dcf64f80f5b6f2116d72 Mon Sep 17 00:00:00 2001
From: Fierelier <fier@airmail.cc>
Date: Fri, 13 Sep 2024 23:25:10 +0200
Subject: [PATCH] Add texture helper functions

---
 main.c | 45 +++++++++++++++++++++++++++++++++++++++++++++
 main.h |  9 ++++-----
 2 files changed, 49 insertions(+), 5 deletions(-)

diff --git a/main.c b/main.c
index c393cdd..7f8f35b 100644
--- a/main.c
+++ b/main.c
@@ -48,6 +48,51 @@ void unigi_ext_texture_draw(
    }
 }
 
+unigi_ext_type_texture * unigi_ext_texture_create(unigi_ext_type_2d_coord width, unigi_ext_type_2d_coord height) {
+	unigi_ext_type_texture * texture = malloc(sizeof(unigi_ext_type_texture));
+	if (texture == NULL) { return NULL; }
+	texture->width = width;
+	texture->height = height;
+	texture->pixels = malloc(sizeof(unigi_type_color) * width * height);
+	if (texture->pixels == NULL) {
+		free(texture);
+		return NULL;
+	}
+	return texture;
+}
+
+void unigi_ext_texture_destroy(unigi_ext_type_texture * texture) {
+	free(texture->pixels);
+	free(texture);
+}
+
+#include <unistd.h>
+#include <fcntl.h>
+unigi_ext_type_texture * unigi_ext_texture_open(char * path) {
+	int fd = open(path,O_RDONLY);
+	if (fd == -1) { goto fail; }
+	unigi_ext_type_2d_coord width;
+	unigi_ext_type_2d_coord height;
+	if (read(fd,&width,sizeof(uint16_t)) != sizeof(uint16_t)) { goto fail_file; }
+	if (read(fd,&height,sizeof(uint16_t)) != sizeof(uint16_t)) { goto fail_file; }
+	unigi_ext_type_texture * texture = unigi_ext_texture_create(width,height);
+	if (texture == NULL) { goto fail_file; }
+	
+	if (read(fd,texture->pixels,sizeof(uint16_t) * width * height) != sizeof(uint16_t) * width * height) {
+		goto fail_texture;
+	}
+	
+	close(fd);
+	return texture;
+	
+	fail_texture:;
+	unigi_ext_texture_destroy(texture);
+	fail_file:;
+	close(fd);
+	fail:;
+	return NULL;
+}
+
 void unigi_ext_rect_dimensions(
 	unigi_ext_type_rect bounds,
 	unigi_ext_type_2d_coord * width,
diff --git a/main.h b/main.h
index 3eea43f..97f99f3 100644
--- a/main.h
+++ b/main.h
@@ -10,10 +10,9 @@ void unigi_ext_texture_draw(
 	unigi_ext_type_rect texbounds,
 	unigi_ext_type_rect bufbounds
 );
+void unigi_ext_rect_dimensions(unigi_ext_type_rect bounds, unigi_ext_type_2d_coord * width, unigi_ext_type_2d_coord * height);
+unigi_ext_type_texture * unigi_ext_texture_create(unigi_ext_type_2d_coord width, unigi_ext_type_2d_coord height);
+void unigi_ext_texture_destroy(unigi_ext_type_texture * texture);
+unigi_ext_type_texture * unigi_ext_texture_open(char * path);
 
-void unigi_ext_rect_dimensions(
-	unigi_ext_type_rect bounds,
-	unigi_ext_type_2d_coord * width,
-	unigi_ext_type_2d_coord * height
-);
 #endif