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authorMarek Olšák <[email protected]>2016-04-21 23:46:19 +0200
committerMarek Olšák <[email protected]>2016-05-10 17:20:09 +0200
commit2f173b8e13308bea0690684f841fad28ccc2e40e (patch)
tree65071cc447d274269286780efaed0ffdbad955ce /src/gallium/drivers/radeon
parent2af4b637d8a2da72a42ca8288dcab90fb1e2346c (diff)
gallium/radeon: use a common function for DMA blit preparation
this is more robust and probably fixes some bugs already Reviewed-by: Alex Deucher <[email protected]> Reviewed-by: Nicolai Hähnle <[email protected]>
Diffstat (limited to 'src/gallium/drivers/radeon')
-rw-r--r--src/gallium/drivers/radeon/r600_pipe_common.h7
-rw-r--r--src/gallium/drivers/radeon/r600_texture.c55
2 files changed, 62 insertions, 0 deletions
diff --git a/src/gallium/drivers/radeon/r600_pipe_common.h b/src/gallium/drivers/radeon/r600_pipe_common.h
index c313bc947b6..e0db061c5eb 100644
--- a/src/gallium/drivers/radeon/r600_pipe_common.h
+++ b/src/gallium/drivers/radeon/r600_pipe_common.h
@@ -623,6 +623,13 @@ void r600_update_prims_generated_query_state(struct r600_common_context *rctx,
void r600_streamout_init(struct r600_common_context *rctx);
/* r600_texture.c */
+bool r600_prepare_for_dma_blit(struct r600_common_context *rctx,
+ struct r600_texture *rdst,
+ unsigned dst_level, unsigned dstx,
+ unsigned dsty, unsigned dstz,
+ struct r600_texture *rsrc,
+ unsigned src_level,
+ const struct pipe_box *src_box);
void r600_texture_get_fmask_info(struct r600_common_screen *rscreen,
struct r600_texture *rtex,
unsigned nr_samples,
diff --git a/src/gallium/drivers/radeon/r600_texture.c b/src/gallium/drivers/radeon/r600_texture.c
index 3e71da23f10..103b7b70053 100644
--- a/src/gallium/drivers/radeon/r600_texture.c
+++ b/src/gallium/drivers/radeon/r600_texture.c
@@ -32,6 +32,61 @@
#include <errno.h>
#include <inttypes.h>
+bool r600_prepare_for_dma_blit(struct r600_common_context *rctx,
+ struct r600_texture *rdst,
+ unsigned dst_level, unsigned dstx,
+ unsigned dsty, unsigned dstz,
+ struct r600_texture *rsrc,
+ unsigned src_level,
+ const struct pipe_box *src_box)
+{
+ if (!rctx->dma.cs)
+ return false;
+
+ if (util_format_get_blocksizebits(rdst->resource.b.b.format) !=
+ util_format_get_blocksizebits(rsrc->resource.b.b.format))
+ return false;
+
+ /* MSAA: Blits don't exist in the real world. */
+ if (rsrc->resource.b.b.nr_samples > 1 ||
+ rdst->resource.b.b.nr_samples > 1)
+ return false;
+
+ /* Depth-stencil surfaces:
+ * When dst is linear, the DB->CB copy preserves HTILE.
+ * When dst is tiled, the 3D path must be used to update HTILE.
+ */
+ if (rsrc->is_depth || rdst->is_depth)
+ return false;
+
+ /* DCC as:
+ * src: Use the 3D path. DCC decompression is expensive.
+ * dst: If overwriting the whole texture, disable DCC and use SDMA.
+ * Otherwise, use the 3D path.
+ * TODO: handle the case when the dst box covers the whole texture
+ */
+ if (rsrc->dcc_offset || rdst->dcc_offset)
+ return false;
+
+ /* CMASK as:
+ * src: Both texture and SDMA paths need decompression. Use SDMA.
+ * dst: If overwriting the whole texture, deallocate CMASK and use
+ * SDMA. Otherwise, use the 3D path.
+ * TODO: handle the case when the dst box covers the whole texture
+ */
+ if (rdst->cmask.size && rdst->dirty_level_mask & (1 << dst_level))
+ return false;
+
+ /* All requirements are met. Prepare textures for SDMA. */
+ if (rsrc->cmask.size && rsrc->dirty_level_mask & (1 << src_level))
+ rctx->b.flush_resource(&rctx->b, &rsrc->resource.b.b);
+
+ assert(!(rsrc->dirty_level_mask & (1 << src_level)));
+ assert(!(rdst->dirty_level_mask & (1 << dst_level)));
+
+ return true;
+}
+
/* Same as resource_copy_region, except that both upsampling and downsampling are allowed. */
static void r600_copy_region_with_blit(struct pipe_context *pipe,
struct pipe_resource *dst,