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-rw-r--r--src/gallium/drivers/radeonsi/si_cp_dma.c2
-rw-r--r--src/gallium/drivers/radeonsi/si_descriptors.c3
-rw-r--r--src/gallium/drivers/radeonsi/si_state.c2
-rw-r--r--src/gallium/drivers/radeonsi/si_state.h2
4 files changed, 7 insertions, 2 deletions
diff --git a/src/gallium/drivers/radeonsi/si_cp_dma.c b/src/gallium/drivers/radeonsi/si_cp_dma.c
index 9fa3ccb6c27..ea999d9f654 100644
--- a/src/gallium/drivers/radeonsi/si_cp_dma.c
+++ b/src/gallium/drivers/radeonsi/si_cp_dma.c
@@ -434,7 +434,7 @@ static void cik_emit_prefetch_L2(struct si_context *sctx, struct r600_atom *atom
if (sctx->vertex_buffer_pointer_dirty) {
cik_prefetch_TC_L2_async(sctx, &sctx->vertex_buffers.buffer->b.b,
sctx->vertex_buffers.buffer_offset,
- sctx->vertex_elements->count * 16);
+ sctx->vertex_elements->desc_list_byte_size);
}
if (si_pm4_state_changed(sctx, ps))
cik_prefetch_shader_async(sctx, sctx->queued.named.ps);
diff --git a/src/gallium/drivers/radeonsi/si_descriptors.c b/src/gallium/drivers/radeonsi/si_descriptors.c
index 9acc4233b1f..b0faf421a44 100644
--- a/src/gallium/drivers/radeonsi/si_descriptors.c
+++ b/src/gallium/drivers/radeonsi/si_descriptors.c
@@ -961,7 +961,8 @@ bool si_upload_vertex_buffer_descriptors(struct si_context *sctx)
* directly through a staging buffer and don't go through
* the fine-grained upload path.
*/
- u_upload_alloc(sctx->b.uploader, 0, count * 16, 256, &desc->buffer_offset,
+ u_upload_alloc(sctx->b.uploader, 0, velems->desc_list_byte_size, 256,
+ &desc->buffer_offset,
(struct pipe_resource**)&desc->buffer, (void**)&ptr);
if (!desc->buffer)
return false;
diff --git a/src/gallium/drivers/radeonsi/si_state.c b/src/gallium/drivers/radeonsi/si_state.c
index 5a163b14f16..1e0729c3b70 100644
--- a/src/gallium/drivers/radeonsi/si_state.c
+++ b/src/gallium/drivers/radeonsi/si_state.c
@@ -3351,6 +3351,8 @@ static void *si_create_vertex_elements(struct pipe_context *ctx,
return NULL;
v->count = count;
+ v->desc_list_byte_size = align(count * 16, SI_CPDMA_ALIGNMENT);
+
for (i = 0; i < count; ++i) {
const struct util_format_description *desc;
const struct util_format_channel_description *channel;
diff --git a/src/gallium/drivers/radeonsi/si_state.h b/src/gallium/drivers/radeonsi/si_state.h
index 3f08f54a745..07b7d582752 100644
--- a/src/gallium/drivers/radeonsi/si_state.h
+++ b/src/gallium/drivers/radeonsi/si_state.h
@@ -100,6 +100,8 @@ struct si_vertex_element
{
unsigned count;
unsigned first_vb_use_mask;
+ /* Vertex buffer descriptor list size aligned for optimal prefetch. */
+ unsigned desc_list_byte_size;
/* Two bits per attribute indicating the size of each vector component
* in bytes if the size 3-workaround must be applied.