radeon/kms: add initial colortiling support (disabled by default).

This requires an X server from git with createpixmap2 support fixed up in it.

On 1.6 and previous it won't do any tiling, if you are running git server
please upgrade to latest git.

Option "AllowColorTiling" "true" to enable and do some testing

1 files changed, 54 insertions, 0 deletions

diff --git a/src/radeon_exa.c b/src/radeon_exa.c
index 25e3311b..ec65722c 100644
--- a/src/radeon_exa.c
+++ b/src/radeon_exa.c
@@ -403,6 +403,60 @@ void *RADEONEXACreatePixmap(ScreenPtr pScreen, int size, int align)
 
 }
 
+void *RADEONEXACreatePixmap2(ScreenPtr pScreen, int width, int height,
+			     int depth, int usage_hint, int bitsPerPixel,
+			     int *new_pitch)
+{
+    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
+    RADEONInfoPtr info = RADEONPTR(pScrn);
+    struct radeon_exa_pixmap_priv *new_priv;
+    int padded_width;
+    uint32_t size;
+    uint32_t tiling = 0;
+    int pixmap_align = 0;
+    
+    if (usage_hint) {
+	if (info->allowColorTiling) {
+    	    if (usage_hint & RADEON_CREATE_PIXMAP_TILING_MACRO)
+ 	   	tiling |= RADEON_TILING_MACRO;
+    	    if (usage_hint & RADEON_CREATE_PIXMAP_TILING_MICRO)
+                tiling |= RADEON_TILING_MICRO;
+	}
+    }
+
+    if (tiling) {
+	height = (height + 15) & ~15;
+	pixmap_align = 255;
+    } else
+	pixmap_align = 63;
+
+    padded_width = ((width * bitsPerPixel + FB_MASK) >> FB_SHIFT) * sizeof(FbBits);
+    padded_width = (padded_width + pixmap_align) & ~pixmap_align;
+    size = height * padded_width;
+
+    new_priv = xcalloc(1, sizeof(struct radeon_exa_pixmap_priv));
+    if (!new_priv)
+	return NULL;
+
+    if (size == 0)
+	return new_priv;
+
+    *new_pitch = padded_width;
+
+    new_priv->bo = radeon_bo_open(info->bufmgr, 0, size,
+				  0, 0, 0);
+    if (!new_priv->bo) {
+	xfree(new_priv);
+	ErrorF("Failed to alloc memory\n");
+	return NULL;
+    }
+
+    if (tiling)
+	radeon_bo_set_tiling(new_priv->bo, tiling, *new_pitch);
+
+    return new_priv;
+}
+
 static void RADEONEXADestroyPixmap(ScreenPtr pScreen, void *driverPriv)
 {
     struct radeon_exa_pixmap_priv *driver_priv = driverPriv;