Mesa (master): st/xorg: Fix Xv cliprect scaling.

[Jakob Bornecrantz]

Module: Mesa
Branch: master
Commit: 7356d1c140f2989df9e8645cf4b85962f27d0fca
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=7356d1c140f2989df9e8645cf4b85962f27d0fca

Author: Thomas Hellstrom <thellstrom at vmware.com>
Date:   Sat Mar 13 20:25:29 2010 +0100

st/xorg: Fix Xv cliprect scaling.

Due to a quantization error, different cliprects of scaled video windows may
not have identical x / y scale.

Signed-off-by: Thomas Hellstrom <thellstrom at vmware.com>

---

 src/gallium/state_trackers/xorg/xorg_renderer.c |    2 +-
 src/gallium/state_trackers/xorg/xorg_renderer.h |    2 +-
 src/gallium/state_trackers/xorg/xorg_xv.c       |   14 +++++++-------
 3 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/src/gallium/state_trackers/xorg/xorg_renderer.c b/src/gallium/state_trackers/xorg/xorg_renderer.c
index d4a3faf..92f1cc5 100644
--- a/src/gallium/state_trackers/xorg/xorg_renderer.c
+++ b/src/gallium/state_trackers/xorg/xorg_renderer.c
@@ -601,7 +601,7 @@ void renderer_copy_pixmap(struct xorg_renderer *r,
 
 
 void renderer_draw_yuv(struct xorg_renderer *r,
-                       int src_x, int src_y, int src_w, int src_h,
+                       float src_x, float src_y, float src_w, float src_h,
                        int dst_x, int dst_y, int dst_w, int dst_h,
                        struct pipe_resource **textures)
 {
diff --git a/src/gallium/state_trackers/xorg/xorg_renderer.h b/src/gallium/state_trackers/xorg/xorg_renderer.h
index 0454a65..fb09fab 100644
--- a/src/gallium/state_trackers/xorg/xorg_renderer.h
+++ b/src/gallium/state_trackers/xorg/xorg_renderer.h
@@ -54,7 +54,7 @@ void renderer_set_constants(struct xorg_renderer *r,
 
 
 void renderer_draw_yuv(struct xorg_renderer *r,
-                       int src_x, int src_y, int src_w, int src_h,
+                       float src_x, float src_y, float src_w, float src_h,
                        int dst_x, int dst_y, int dst_w, int dst_h,
                        struct pipe_resource **textures);
 
diff --git a/src/gallium/state_trackers/xorg/xorg_xv.c b/src/gallium/state_trackers/xorg/xorg_xv.c
index a221594..f98bd93 100644
--- a/src/gallium/state_trackers/xorg/xorg_xv.c
+++ b/src/gallium/state_trackers/xorg/xorg_xv.c
@@ -413,7 +413,7 @@ setup_fs_video_constants(struct xorg_renderer *r, boolean hdtv)
 
 static void
 draw_yuv(struct xorg_xv_port_priv *port,
-         int src_x, int src_y, int src_w, int src_h,
+         float src_x, float src_y, float src_w, float src_h,
          int dst_x, int dst_y, int dst_w, int dst_h)
 {
    struct pipe_resource **textures = port->yuv[port->current_set];
@@ -562,10 +562,10 @@ display_video(ScrnInfoPtr pScrn, struct xorg_xv_port_priv *pPriv, int id,
       int box_y2 = pbox->y2;
       float diff_x = (float)src_w / (float)dst_w;
       float diff_y = (float)src_h / (float)dst_h;
-      int offset_x = box_x1 - dstX + pPixmap->screen_x;
-      int offset_y = box_y1 - dstY + pPixmap->screen_y;
-      int offset_w;
-      int offset_h;
+      float offset_x = box_x1 - dstX + pPixmap->screen_x;
+      float offset_y = box_y1 - dstY + pPixmap->screen_y;
+      float offset_w;
+      float offset_h;
 
       x = box_x1;
       y = box_y1;
@@ -576,8 +576,8 @@ display_video(ScrnInfoPtr pScrn, struct xorg_xv_port_priv *pPriv, int id,
       offset_h = dst_h - h;
 
       draw_yuv(pPriv,
-               src_x + offset_x*diff_x, src_y + offset_y*diff_y,
-               src_w - offset_w*diff_x, src_h - offset_h*diff_y,
+               (float) src_x + offset_x*diff_x, (float) src_y + offset_y*diff_y,
+               (float) src_w - offset_w*diff_x, (float) src_h - offset_h*diff_y,
                x, y, w, h);
 
       pbox++;