radv/meta: add support for save/restore meta without vertex data.

Some of the shaders could just generate the vertex data in the
shader, so add helpers to allow us to move to doing that.

Reviewed-by: Bas Nieuwenhuizen <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>

1 files changed, 31 insertions, 8 deletions

diff --git a/src/amd/vulkan/radv_meta.c b/src/amd/vulkan/radv_meta.c
index 0098e0844c1..feb2ab8bfa6 100644
--- a/src/amd/vulkan/radv_meta.c
+++ b/src/amd/vulkan/radv_meta.c
@@ -31,20 +31,30 @@
 #include <sys/stat.h>
 
 void
-radv_meta_save(struct radv_meta_saved_state *state,
+radv_meta_save_novertex(struct radv_meta_saved_state *state,
 	       const struct radv_cmd_buffer *cmd_buffer,
 	       uint32_t dynamic_mask)
 {
 	state->old_pipeline = cmd_buffer->state.pipeline;
-	state->old_descriptor_set0 = cmd_buffer->state.descriptors[0];
-	memcpy(state->old_vertex_bindings, cmd_buffer->state.vertex_bindings,
-	       sizeof(state->old_vertex_bindings));
 
 	state->dynamic_mask = dynamic_mask;
 	radv_dynamic_state_copy(&state->dynamic, &cmd_buffer->state.dynamic,
 				dynamic_mask);
 
 	memcpy(state->push_constants, cmd_buffer->push_constants, MAX_PUSH_CONSTANTS_SIZE);
+	state->vertex_saved = false;
+}
+
+void
+radv_meta_save(struct radv_meta_saved_state *state,
+	       const struct radv_cmd_buffer *cmd_buffer,
+	       uint32_t dynamic_mask)
+{
+	radv_meta_save_novertex(state, cmd_buffer, dynamic_mask);
+	state->old_descriptor_set0 = cmd_buffer->state.descriptors[0];
+	memcpy(state->old_vertex_bindings, cmd_buffer->state.vertex_bindings,
+	       sizeof(state->old_vertex_bindings));
+	state->vertex_saved = true;
 }
 
 void
@@ -52,11 +62,13 @@ radv_meta_restore(const struct radv_meta_saved_state *state,
 		  struct radv_cmd_buffer *cmd_buffer)
 {
 	cmd_buffer->state.pipeline = state->old_pipeline;
-	radv_bind_descriptor_set(cmd_buffer, state->old_descriptor_set0, 0);
-	memcpy(cmd_buffer->state.vertex_bindings, state->old_vertex_bindings,
-	       sizeof(state->old_vertex_bindings));
+	if (state->vertex_saved) {
+		radv_bind_descriptor_set(cmd_buffer, state->old_descriptor_set0, 0);
+		memcpy(cmd_buffer->state.vertex_bindings, state->old_vertex_bindings,
+		       sizeof(state->old_vertex_bindings));
+		cmd_buffer->state.vb_dirty |= (1 << RADV_META_VERTEX_BINDING_COUNT) - 1;
+	}
 
-	cmd_buffer->state.vb_dirty |= (1 << RADV_META_VERTEX_BINDING_COUNT) - 1;
 	cmd_buffer->state.dirty |= RADV_CMD_DIRTY_PIPELINE;
 
 	radv_dynamic_state_copy(&cmd_buffer->state.dynamic, &state->dynamic,
@@ -393,3 +405,14 @@ radv_meta_save_graphics_reset_vport_scissor(struct radv_meta_saved_state *saved_
 	cmd_buffer->state.dynamic.scissor.count = 0;
 	cmd_buffer->state.dirty |= dirty_state;
 }
+
+void
+radv_meta_save_graphics_reset_vport_scissor_novertex(struct radv_meta_saved_state *saved_state,
+						     struct radv_cmd_buffer *cmd_buffer)
+{
+	uint32_t dirty_state = (1 << VK_DYNAMIC_STATE_VIEWPORT) | (1 << VK_DYNAMIC_STATE_SCISSOR);
+	radv_meta_save_novertex(saved_state, cmd_buffer, dirty_state);
+	cmd_buffer->state.dynamic.viewport.count = 0;
+	cmd_buffer->state.dynamic.scissor.count = 0;
+	cmd_buffer->state.dirty |= dirty_state;
+}