1 files changed, 164 insertions, 0 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_rect.c b/mesalib/src/gallium/auxiliary/util/u_rect.c
new file mode 100644
index 000000000..b11fff791
--- /dev/null
+++ b/mesalib/src/gallium/auxiliary/util/u_rect.c
@@ -0,0 +1,164 @@
+/**************************************************************************
+ * 
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ **************************************************************************/
+
+/**
+ * Rectangle-related helper functions.
+ */
+
+
+#include "util/u_format.h"
+#include "util/u_rect.h"
+#include "util/u_pack_color.h"
+
+
+/**
+ * Copy 2D rect from one place to another.
+ * Position and sizes are in pixels.
+ * src_stride may be negative to do vertical flip of pixels from source.
+ */
+void
+util_copy_rect(ubyte * dst,
+               enum pipe_format format,
+               unsigned dst_stride,
+               unsigned dst_x,
+               unsigned dst_y,
+               unsigned width,
+               unsigned height,
+               const ubyte * src,
+               int src_stride,
+               unsigned src_x, 
+               unsigned src_y)
+{
+   unsigned i;
+   int src_stride_pos = src_stride < 0 ? -src_stride : src_stride;
+   int blocksize = util_format_get_blocksize(format);
+   int blockwidth = util_format_get_blockwidth(format);
+   int blockheight = util_format_get_blockheight(format);
+
+   assert(blocksize > 0);
+   assert(blockwidth > 0);
+   assert(blockheight > 0);
+
+   dst_x /= blockwidth;
+   dst_y /= blockheight;
+   width = (width + blockwidth - 1)/blockwidth;
+   height = (height + blockheight - 1)/blockheight;
+   src_x /= blockwidth;
+   src_y /= blockheight;
+   
+   dst += dst_x * blocksize;
+   src += src_x * blocksize;
+   dst += dst_y * dst_stride;
+   src += src_y * src_stride_pos;
+   width *= blocksize;
+
+   if (width == dst_stride && width == src_stride)
+      memcpy(dst, src, height * width);
+   else {
+      for (i = 0; i < height; i++) {
+         memcpy(dst, src, width);
+         dst += dst_stride;
+         src += src_stride;
+      }
+   }
+}
+
+void
+util_fill_rect(ubyte * dst,
+               enum pipe_format format,
+               unsigned dst_stride,
+               unsigned dst_x,
+               unsigned dst_y,
+               unsigned width,
+               unsigned height,
+               union util_color *uc)
+{
+   unsigned i, j;
+   unsigned width_size;
+   int blocksize = util_format_get_blocksize(format);
+   int blockwidth = util_format_get_blockwidth(format);
+   int blockheight = util_format_get_blockheight(format);
+
+   assert(blocksize > 0);
+   assert(blockwidth > 0);
+   assert(blockheight > 0);
+
+   dst_x /= blockwidth;
+   dst_y /= blockheight;
+   width = (width + blockwidth - 1)/blockwidth;
+   height = (height + blockheight - 1)/blockheight;
+
+   dst += dst_x * blocksize;
+   dst += dst_y * dst_stride;
+   width_size = width * blocksize;
+
+   switch (blocksize) {
+   case 1:
+      if(dst_stride == width_size)
+         memset(dst, uc->ub, height * width_size);
+      else {
+         for (i = 0; i < height; i++) {
+            memset(dst, uc->ub, width_size);
+            dst += dst_stride;
+         }
+      }
+      break;
+   case 2:
+      for (i = 0; i < height; i++) {
+         uint16_t *row = (uint16_t *)dst;
+         for (j = 0; j < width; j++)
+            *row++ = uc->us;
+         dst += dst_stride;
+      }
+      break;
+   case 4:
+      for (i = 0; i < height; i++) {
+         uint32_t *row = (uint32_t *)dst;
+         for (j = 0; j < width; j++)
+            *row++ = uc->ui;
+         dst += dst_stride;
+      }
+      break;
+   case 8:
+   case 12:
+   case 16:
+   case 24:
+   case 32:
+      for (i = 0; i < height; i++) {
+         ubyte *row = dst;
+         for (j = 0; j < width; j++) {
+            memcpy(row, uc, blocksize);
+            row += blocksize;
+         }
+         dst += dst_stride;
+      }
+      break;
+   default:
+      assert(0);
+      break;
+   }
+}