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radeonsi/gfx9: store ES outputs to LDS

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Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
This commit is contained in:
Marek Olšák 2017-04-19 03:34:03 +02:00
parent d616c57342
commit 37e22ab65e
1 changed files with 17 additions and 4 deletions
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21
src/gallium/drivers/radeonsi/si_shader.c
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@ -2840,28 +2840,41 @@ static void si_llvm_emit_es_epilogue(struct lp_build_tgsi_context *bld_base)
struct tgsi_shader_info *info = &es->selector->info;
LLVMValueRef soffset = LLVMGetParam(ctx->main_fn,
ctx->param_es2gs_offset);
LLVMValueRef lds_base = NULL;
unsigned chan;
int i;
if (ctx->screen->b.chip_class >= GFX9 && info->num_outputs) {
unsigned itemsize_dw = es->selector->esgs_itemsize / 4;
lds_base = LLVMBuildMul(gallivm->builder, ac_get_thread_id(&ctx->ac),
LLVMConstInt(ctx->i32, itemsize_dw, 0), "");
}
for (i = 0; i < info->num_outputs; i++) {
LLVMValueRef *out_ptr = ctx->outputs[i];
int param_index;
int param;
if (info->output_semantic_name[i] == TGSI_SEMANTIC_VIEWPORT_INDEX ||
info->output_semantic_name[i] == TGSI_SEMANTIC_LAYER)
continue;
param_index = si_shader_io_get_unique_index(info->output_semantic_name[i],
info->output_semantic_index[i]);
param = si_shader_io_get_unique_index(info->output_semantic_name[i],
info->output_semantic_index[i]);
for (chan = 0; chan < 4; chan++) {
LLVMValueRef out_val = LLVMBuildLoad(gallivm->builder, out_ptr[chan], "");
out_val = LLVMBuildBitCast(gallivm->builder, out_val, ctx->i32, "");
/* GFX9 has the ESGS ring in LDS. */
if (ctx->screen->b.chip_class >= GFX9) {
lds_store(bld_base, param * 4 + chan, lds_base, out_val);
continue;
}
ac_build_buffer_store_dword(&ctx->ac,
ctx->esgs_ring,
out_val, 1, NULL, soffset,
(4 * param_index + chan) * 4,
(4 * param + chan) * 4,
1, 1, true, true);
}
}