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-rw-r--r--src/gallium/drivers/virgl/virgl_resource.c11
-rw-r--r--src/gallium/drivers/virgl/virgl_screen.c1
-rw-r--r--src/gallium/drivers/virgl/virgl_screen.h1
3 files changed, 9 insertions, 4 deletions
diff --git a/src/gallium/drivers/virgl/virgl_resource.c b/src/gallium/drivers/virgl/virgl_resource.c
index 0659b38c692..5e372de7f15 100644
--- a/src/gallium/drivers/virgl/virgl_resource.c
+++ b/src/gallium/drivers/virgl/virgl_resource.c
@@ -117,8 +117,9 @@ virgl_resource_transfer_prepare(struct virgl_context *vctx,
* PIPE_TRANSFER_DISCARD_RANGE are set.
*/
if (res->u.b.target == PIPE_BUFFER &&
- !util_ranges_intersect(&res->valid_buffer_range, xfer->base.box.x,
- xfer->base.box.x + xfer->base.box.width)) {
+ !util_ranges_intersect(&res->valid_buffer_range, xfer->base.box.x,
+ xfer->base.box.x + xfer->base.box.width) &&
+ likely(!(virgl_debug & VIRGL_DEBUG_XFER))) {
flush = false;
readback = false;
wait = false;
@@ -127,8 +128,10 @@ virgl_resource_transfer_prepare(struct virgl_context *vctx,
/* When the resource is busy but its content can be discarded, we can
* replace its HW resource or use a staging buffer to avoid waiting.
*/
- if (wait && (xfer->base.usage & (PIPE_TRANSFER_DISCARD_RANGE |
- PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE))) {
+ if (wait &&
+ (xfer->base.usage & (PIPE_TRANSFER_DISCARD_RANGE |
+ PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE)) &&
+ likely(!(virgl_debug & VIRGL_DEBUG_XFER))) {
bool can_realloc = false;
bool can_staging = false;
diff --git a/src/gallium/drivers/virgl/virgl_screen.c b/src/gallium/drivers/virgl/virgl_screen.c
index 08e7fbe8b54..9291c97906f 100644
--- a/src/gallium/drivers/virgl/virgl_screen.c
+++ b/src/gallium/drivers/virgl/virgl_screen.c
@@ -46,6 +46,7 @@ static const struct debug_named_value debug_options[] = {
{ "emubgra", VIRGL_DEBUG_EMULATE_BGRA, "Enable tweak to emulate BGRA as RGBA on GLES hosts"},
{ "bgraswz", VIRGL_DEBUG_BGRA_DEST_SWIZZLE, "Enable tweak to swizzle emulated BGRA on GLES hosts" },
{ "sync", VIRGL_DEBUG_SYNC, "Sync after every flush" },
+ { "xfer", VIRGL_DEBUG_XFER, "Do not optimize for transfers" },
DEBUG_NAMED_VALUE_END
};
DEBUG_GET_ONCE_FLAGS_OPTION(virgl_debug, "VIRGL_DEBUG", debug_options, 0)
diff --git a/src/gallium/drivers/virgl/virgl_screen.h b/src/gallium/drivers/virgl/virgl_screen.h
index b466c632136..097bba61127 100644
--- a/src/gallium/drivers/virgl/virgl_screen.h
+++ b/src/gallium/drivers/virgl/virgl_screen.h
@@ -33,6 +33,7 @@ enum virgl_debug_flags {
VIRGL_DEBUG_EMULATE_BGRA = 1 << 2,
VIRGL_DEBUG_BGRA_DEST_SWIZZLE = 1 << 3,
VIRGL_DEBUG_SYNC = 1 << 4,
+ VIRGL_DEBUG_XFER = 1 << 5,
};
extern int virgl_debug;