1 files changed, 63 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_tile.c b/src/gallium/auxiliary/util/u_tile.c
index e445895efc..82e44192aa 100644
--- a/src/gallium/auxiliary/util/u_tile.c
+++ b/src/gallium/auxiliary/util/u_tile.c
@@ -1275,6 +1275,69 @@ pipe_get_tile_rgba(struct pipe_context *pipe,
 
 
 void
+pipe_get_tile_swizzle(struct pipe_context *pipe,
+		      struct pipe_transfer *pt,
+                      uint x,
+                      uint y,
+                      uint w,
+                      uint h,
+                      uint swizzle_r,
+                      uint swizzle_g,
+                      uint swizzle_b,
+                      uint swizzle_a,
+                      enum pipe_format format,
+                      float *p)
+{
+   unsigned dst_stride = w * 4;
+   void *packed;
+   uint i;
+   float rgba01[6];
+
+   if (pipe_clip_tile(x, y, &w, &h, pt)) {
+      return;
+   }
+
+   packed = MALLOC(util_format_get_nblocks(format, w, h) * util_format_get_blocksize(format));
+   if (!packed) {
+      return;
+   }
+
+   if (format == PIPE_FORMAT_UYVY || format == PIPE_FORMAT_YUYV) {
+      assert((x & 1) == 0);
+   }
+
+   pipe_get_tile_raw(pipe, pt, x, y, w, h, packed, 0);
+
+   pipe_tile_raw_to_rgba(format, packed, w, h, p, dst_stride);
+
+   FREE(packed);
+
+   if (swizzle_r == PIPE_SWIZZLE_RED &&
+       swizzle_g == PIPE_SWIZZLE_GREEN &&
+       swizzle_b == PIPE_SWIZZLE_BLUE &&
+       swizzle_a == PIPE_SWIZZLE_ALPHA) {
+      /* no-op, skip */
+      return;
+   }
+
+   rgba01[PIPE_SWIZZLE_ZERO] = 0.0f;
+   rgba01[PIPE_SWIZZLE_ONE] = 1.0f;
+
+   for (i = 0; i < w * h; i++) {
+      rgba01[PIPE_SWIZZLE_RED] = p[0];
+      rgba01[PIPE_SWIZZLE_GREEN] = p[1];
+      rgba01[PIPE_SWIZZLE_BLUE] = p[2];
+      rgba01[PIPE_SWIZZLE_ALPHA] = p[3];
+
+      *p++ = rgba01[swizzle_r];
+      *p++ = rgba01[swizzle_g];
+      *p++ = rgba01[swizzle_b];
+      *p++ = rgba01[swizzle_a];
+   }
+}
+
+
+void
 pipe_put_tile_rgba(struct pipe_context *pipe,
                    struct pipe_transfer *pt,
                    uint x, uint y, uint w, uint h,