gallium: move clear paths from rgba to a pointer to a color union (v2)

This moves the gallium interface for clears from using a pointer to 4 floats to a pointer to a union of float/unsigned/int values.

Notes:
1. the value is opaque.
2. only when the value is used should it be interpretered according to
the surface format it is going to be used with.
3. float clears on integer buffers and vice-versa are undefined.

v2: fixed up vega and graw, dropped hunks that shouldn't have been in
patch.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 14 insertions, 2 deletions

diff --git a/src/gallium/state_trackers/vdpau/presentation.c b/src/gallium/state_trackers/vdpau/presentation.c
index b30b778aa19..888cf31d5af 100644
--- a/src/gallium/state_trackers/vdpau/presentation.c
+++ b/src/gallium/state_trackers/vdpau/presentation.c
@@ -119,6 +119,7 @@ vlVdpPresentationQueueSetBackgroundColor(VdpPresentationQueue presentation_queue
                                          VdpColor *const background_color)
 {
    vlVdpPresentationQueue *pq;
+   union pipe_color_union color;
 
    VDPAU_MSG(VDPAU_TRACE, "[VDPAU] Setting background color\n");
 
@@ -129,7 +130,12 @@ vlVdpPresentationQueueSetBackgroundColor(VdpPresentationQueue presentation_queue
    if (!pq)
       return VDP_STATUS_INVALID_HANDLE;
 
-   vl_compositor_set_clear_color(&pq->compositor, (float*)background_color);
+   color.f[0] = background_color->red;
+   color.f[1] = background_color->green;
+   color.f[2] = background_color->blue;
+   color.f[3] = background_color->alpha;
+
+   vl_compositor_set_clear_color(&pq->compositor, &color);
 
    return VDP_STATUS_OK;
 }
@@ -142,6 +148,7 @@ vlVdpPresentationQueueGetBackgroundColor(VdpPresentationQueue presentation_queue
                                          VdpColor *const background_color)
 {
    vlVdpPresentationQueue *pq;
+   union pipe_color_union color;
 
    VDPAU_MSG(VDPAU_TRACE, "[VDPAU] Getting background color\n");
 
@@ -152,7 +159,12 @@ vlVdpPresentationQueueGetBackgroundColor(VdpPresentationQueue presentation_queue
    if (!pq)
       return VDP_STATUS_INVALID_HANDLE;
 
-   vl_compositor_get_clear_color(&pq->compositor, (float*)background_color);
+   vl_compositor_get_clear_color(&pq->compositor, &color);
+
+   background_color->red = color.f[0];
+   background_color->green = color.f[1];
+   background_color->blue = color.f[2];
+   background_color->alpha = color.f[3];
 
    return VDP_STATUS_OK;
 }