1 files changed, 100 insertions, 0 deletions
diff --git a/backends/gp32/gp_clipped.c b/backends/gp32/gp_clipped.c
new file mode 100644
index 0000000000..d3e161c470
--- /dev/null
+++ b/backends/gp32/gp_clipped.c
@@ -0,0 +1,100 @@
+/* ScummVM - Scumm Interpreter
+ * GP32 Blitting library
+ * Copyright (C) 2001-2005 The ScummVM project
+ * Copyright (C) 2003,2004,2005  CARTIER Matthieu
+ * Copyright (C) 2005 Won Star - GP32 Backend
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $Header$
+ *
+ */
+
+//Some global variables and macros
+
+#define	screen_width	320
+#define	screen_height	240
+
+void gp_FastSolidBlit(void *framebuffer, int dx, const int dy, const int width, const int height, const unsigned char *src, const int trans, const int coul) {
+	int xmin, ymin, xmax, ymax;
+	int height2 = ( (height + 3) >> 2) << 2;
+
+	if(dx < 0) {
+		xmin = -dx;
+	} else xmin = 0;
+	if( (dx++ + width) > screen_width) {
+		xmax = screen_width - dx;
+	} else xmax = width - 1;
+	if(dy < 0) {
+		ymax = height + dy - 1;
+	} else ymax = height - 1;
+	if( (dy + height) > screen_height) {
+		ymin = dy + height - screen_height;
+	} else ymin = 0;
+	if( (xmin > xmax) || (ymin > ymax) ) return;
+
+	unsigned char *dst4 = framebuffer + (dx + xmax) * screen_height - height - dy + 1 + ymin;
+	src += (xmax * height2 + ymin);
+	ASMFastSolidBlit(src, dst4, xmax - xmin, ymax - ymin, height2, trans, coul);
+}
+
+//Copy from framebuffer to dest
+void gp_SaveBitmap(void *framebuffer, int dx, const int dy, const int width, const int height, const unsigned char *dest) { //Sur l'icran
+	int xmin, ymin, xmax, ymax;
+	int height2 = ( (height + 3) >> 2) << 2;
+
+	if(dx < 0) {
+		xmin = -dx;
+	} else xmin = 0;
+	if( (dx++ + width) > screen_width) {
+		xmax = screen_width - dx;
+	} else xmax = width - 1;
+	if(dy < 0) {
+		ymax = height + dy - 1;
+	} else ymax = height - 1;
+	if( (dy + height) > screen_height) {
+		ymin = dy + height - screen_height;
+	} else ymin = 0;
+	if( (xmin > xmax) || (ymin > ymax) ) return;
+
+	unsigned char *src4 = framebuffer + (dx + xmax) * screen_height - height - dy + ymin;
+	dest += (xmin * height2 + ymin + 1);
+	ASMSaveBitmap(src4, dest, xmax - xmin, ymax - ymin, height2);
+}
+
+//Clears area with color #0, should not trigger clicky noise
+
+void gp_FastClear(void *framebuffer, int dx, int dy, int width, int height) {
+	int xmin, ymin, xmax, ymax;
+
+	if(dx < 0) {
+		xmin = -dx;
+	} else xmin = 0;
+	if( (dx++ + width) > screen_width) {
+		xmax = screen_width - dx;
+	} else xmax = width - 1;
+	if(dy < 0) {
+		ymax = height + dy - 1;
+	} else ymax = height - 1;
+	if( (dy + height) > screen_height) {
+		ymin = dy + height - screen_height;
+	} else ymin = 0;
+	if( (xmin > xmax) || (ymin > ymax) ) return;
+
+	int decaly = screen_height - height - dy;
+
+	unsigned char *dst4 = framebuffer + (dx + xmax) * screen_height - height - dy + ymin;
+	ASMFastClear(dst4, xmax - xmin, ymax - ymin);
+}