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ir3: Support geometry streams 

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6962>
This commit is contained in:
Connor Abbott 2020-09-23 11:29:28 +02:00 committed by Marge Bot
parent 48cfaecd4f
commit 563789ce37
2 changed files with 15 additions and 0 deletions
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11
src/freedreno/ir3/ir3_nir_lower_tess.c
View File

@ -836,6 +836,11 @@ lower_gs_block(nir_block *block, nir_builder *b, struct state *state)
switch (intr->intrinsic) {
case nir_intrinsic_end_primitive: {
/* Note: This ignores the stream, which seems to match the blob
* behavior. I'm guessing the HW ignores any extraneous cut
* signals from an EndPrimitive() that doesn't correspond to the
* rasterized stream.
*/
b->cursor = nir_before_instr(&intr->instr);
nir_store_var(b, state->vertex_flags_out, nir_imm_int(b, 4), 0x1);
nir_instr_remove(&intr->instr);
@ -849,6 +854,12 @@ lower_gs_block(nir_block *block, nir_builder *b, struct state *state)
nir_push_if(b, nir_ieq(b, count, local_thread_id(b)));
unsigned stream = nir_intrinsic_stream_id(intr);
/* vertex_flags_out |= stream */
nir_store_var(b, state->vertex_flags_out,
nir_ior(b, nir_load_var(b, state->vertex_flags_out),
nir_imm_int(b, stream)), 0x1 /* .x */);
foreach_two_lists(dest_node, &state->emit_outputs, src_node, &state->old_outputs) {
nir_variable *dest = exec_node_data(nir_variable, dest_node, node);
nir_variable *src = exec_node_data(nir_variable, src_node, node);

4
src/freedreno/ir3/ir3_shader.h
View File

@ -219,6 +219,10 @@ struct ir3_stream_output_info {
/** stride for an entire vertex for each buffer in dwords */
uint16_t stride[IR3_MAX_SO_BUFFERS];
/* These correspond to the VPC_SO_STREAM_CNTL fields */
uint8_t streams_written;
uint8_t buffer_to_stream[IR3_MAX_SO_BUFFERS];
/**
* Array of stream outputs, in the order they are to be written in.
* Selected components are tightly packed into the output buffer.