diff src/video/SDL_drawpoint.c @ 2901:133601e3b255

Added RenderPiont() API Merged the drawing tests into a single test program
author Sam Lantinga <slouken@libsdl.org>
date Sun, 21 Dec 2008 17:39:41 +0000
parents
children 210e209b87cc
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line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/video/SDL_drawpoint.c	Sun Dec 21 17:39:41 2008 +0000
@@ -0,0 +1,60 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997-2009 Sam Lantinga
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library 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
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+    Sam Lantinga
+    slouken@libsdl.org
+*/
+#include "SDL_config.h"
+
+#include "SDL_draw.h"
+
+
+int
+SDL_DrawPoint(SDL_Surface * dst, int x, int y, Uint32 color)
+{
+    /* This function doesn't work on surfaces < 8 bpp */
+    if (dst->format->BitsPerPixel < 8) {
+        SDL_SetError("SDL_DrawLine(): Unsupported surface format");
+        return (-1);
+    }
+
+    /* Perform clipping */
+    if (x < dst->clip_rect.x || y < dst->clip_rect.y ||
+        x >= (dst->clip_rect.x + dst->clip_rect.w) ||
+        y >= (dst->clip_rect.y + dst->clip_rect.h)) {
+        return 0;
+    }
+
+    switch (dst->format->BytesPerPixel) {
+    case 1:
+        DRAW_FASTSETPIXEL1(x, y);
+        break;
+    case 2:
+        DRAW_FASTSETPIXEL2(x, y);
+        break;
+    case 3:
+        SDL_Unsupported();
+        return -1;
+    case 4:
+        DRAW_FASTSETPIXEL4(x, y);
+        break;
+    }
+    return 0;
+}
+
+/* vi: set ts=4 sw=4 expandtab: */