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radeonsi: fetch only outputs of current vertex stream from the GSVS ring

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Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Nicolai Hähnle
2016-11-29 16:03:56 +01:00
parent dfb69cac33
commit bae929f96e
1 changed files with 25 additions and 16 deletions
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41
src/gallium/drivers/radeonsi/si_shader.c
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@@ -6396,28 +6396,14 @@ si_generate_gs_copy_shader(struct si_screen *sscreen,
else
stream_id = uint->zero;
/* Fetch vertex data from GSVS ring */
/* Fill in output information. */
for (i = 0; i < gsinfo->num_outputs; ++i) {
unsigned chan;
outputs[i].semantic_name = gsinfo->output_semantic_name[i];
outputs[i].semantic_index = gsinfo->output_semantic_index[i];
for (chan = 0; chan < 4; chan++) {
for (int chan = 0; chan < 4; chan++) {
outputs[i].vertex_stream[chan] =
(gsinfo->output_streams[i] >> (2 * chan)) & 3;
args[2] = lp_build_const_int32(gallivm,
(i * 4 + chan) *
gs_selector->gs_max_out_vertices * 16 * 4);
outputs[i].values[chan] =
LLVMBuildBitCast(gallivm->builder,
lp_build_intrinsic(gallivm->builder,
"llvm.SI.buffer.load.dword.i32.i32",
ctx.i32, args, 9,
LP_FUNC_ATTR_READONLY),
ctx.f32, "");
}
}
@@ -6437,6 +6423,29 @@ si_generate_gs_copy_shader(struct si_screen *sscreen,
lp_build_if(&if_ctx_stream, gallivm, is_stream);
/* Fetch vertex data from GSVS ring */
for (i = 0; i < gsinfo->num_outputs; ++i) {
for (unsigned chan = 0; chan < 4; chan++) {
if (outputs[i].vertex_stream[chan] != stream) {
outputs[i].values[chan] = ctx.soa.bld_base.base.undef;
continue;
}
args[2] = lp_build_const_int32(
gallivm,
(i * 4 + chan) * gs_selector->gs_max_out_vertices * 16 * 4);
outputs[i].values[chan] =
LLVMBuildBitCast(gallivm->builder,
lp_build_intrinsic(gallivm->builder,
"llvm.SI.buffer.load.dword.i32.i32",
ctx.i32, args, 9,
LP_FUNC_ATTR_READONLY),
ctx.f32, "");
}
}
/* Streamout and exports. */
if (gs_selector->so.num_outputs) {
si_llvm_emit_streamout(&ctx, outputs,
gsinfo->num_outputs,