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authorSamuel Pitoiset <[email protected]>2017-11-08 12:12:31 +0100
committerSamuel Pitoiset <[email protected]>2017-11-13 11:03:16 +0100
commitf87c58dde38902d9bfb5a046b4bf1b5e56c55fcf (patch)
tree6e8021da325c5a001a569525b776109b2e1e8a53 /src/amd/vulkan
parent9444a34f4a3b7d954f4a009861a677aca1eaf4af (diff)
radv: prefetch VBO descriptors at the right place
Just after the vertex shader. This seems to give a minor boost for, at least, Serious Sam Fusion 2017 and Dawn of War 3. I don't see any real impacts with The Talos Principle. Signed-off-by: Samuel Pitoiset <[email protected]> Reviewed-by: Bas Nieuwenhuizen <[email protected]>
Diffstat (limited to 'src/amd/vulkan')
-rw-r--r--src/amd/vulkan/radv_cmd_buffer.c16
-rw-r--r--src/amd/vulkan/radv_private.h5
2 files changed, 21 insertions, 0 deletions
diff --git a/src/amd/vulkan/radv_cmd_buffer.c b/src/amd/vulkan/radv_cmd_buffer.c
index 1d552e265ae..a2ad9fa460e 100644
--- a/src/amd/vulkan/radv_cmd_buffer.c
+++ b/src/amd/vulkan/radv_cmd_buffer.c
@@ -669,6 +669,17 @@ radv_emit_prefetch_TC_L2_async(struct radv_cmd_buffer *cmd_buffer, uint64_t va,
}
static void
+radv_emit_VBO_descriptors_prefetch(struct radv_cmd_buffer *cmd_buffer)
+{
+ if (cmd_buffer->state.vb_prefetch_dirty) {
+ radv_emit_prefetch_TC_L2_async(cmd_buffer,
+ cmd_buffer->state.vb_va,
+ cmd_buffer->state.vb_size);
+ cmd_buffer->state.vb_prefetch_dirty = false;
+ }
+}
+
+static void
radv_emit_shader_prefetch(struct radv_cmd_buffer *cmd_buffer,
struct radv_shader_variant *shader)
{
@@ -691,6 +702,7 @@ radv_emit_prefetch(struct radv_cmd_buffer *cmd_buffer,
{
radv_emit_shader_prefetch(cmd_buffer,
pipeline->shaders[MESA_SHADER_VERTEX]);
+ radv_emit_VBO_descriptors_prefetch(cmd_buffer);
radv_emit_shader_prefetch(cmd_buffer,
pipeline->shaders[MESA_SHADER_TESS_CTRL]);
radv_emit_shader_prefetch(cmd_buffer,
@@ -1814,6 +1826,10 @@ radv_cmd_buffer_update_vertex_descriptors(struct radv_cmd_buffer *cmd_buffer, bo
radv_emit_userdata_address(cmd_buffer, cmd_buffer->state.pipeline, MESA_SHADER_VERTEX,
AC_UD_VS_VERTEX_BUFFERS, va);
+
+ cmd_buffer->state.vb_va = va;
+ cmd_buffer->state.vb_size = count * 16;
+ cmd_buffer->state.vb_prefetch_dirty = true;
}
cmd_buffer->state.vb_dirty = false;
diff --git a/src/amd/vulkan/radv_private.h b/src/amd/vulkan/radv_private.h
index 58b9f469048..79f52c61e0b 100644
--- a/src/amd/vulkan/radv_private.h
+++ b/src/amd/vulkan/radv_private.h
@@ -809,7 +809,12 @@ struct radv_attachment_state {
};
struct radv_cmd_state {
+ /* Vertex descriptors */
bool vb_dirty;
+ bool vb_prefetch_dirty;
+ uint64_t vb_va;
+ unsigned vb_size;
+
bool push_descriptors_dirty;
bool predicating;
radv_cmd_dirty_mask_t dirty;