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pan/mdg: Emit a tilebuffer wait loop when needed

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Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5755>
This commit is contained in:
Icecream95 2020-07-08 13:15:09 +12:00 • committed by Marge Bot
parent 1e1eee992e
commit ed4d2739fe
1 changed files with 20 additions and 1 deletions
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21
src/panfrost/midgard/midgard_compile.c
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@ -2478,7 +2478,7 @@ emit_fragment_epilogue(compiler_context *ctx, unsigned rt)
}
static midgard_block *
emit_block(compiler_context *ctx, nir_block *block)
emit_block_init(compiler_context *ctx)
{
midgard_block *this_block = ctx->after_block;
ctx->after_block = NULL;
@ -2495,6 +2495,14 @@ emit_block(compiler_context *ctx, nir_block *block)
list_inithead(&this_block->base.instructions);
ctx->current_block = this_block;
return this_block;
}
static midgard_block *
emit_block(compiler_context *ctx, nir_block *block)
{
midgard_block *this_block = emit_block_init(ctx);
nir_foreach_instr(instr, block) {
emit_instr(ctx, instr);
++ctx->instruction_count;
@ -2791,6 +2799,17 @@ midgard_compile_shader_nir(nir_shader *nir, panfrost_program *program, bool is_b
ctx->func = func;
ctx->already_emitted = calloc(BITSET_WORDS(func->impl->ssa_alloc), sizeof(BITSET_WORD));
if (nir->info.outputs_read && !is_blend) {
emit_block_init(ctx);
struct midgard_instruction wait = v_branch(false, false);
wait.branch.target_type = TARGET_TILEBUF_WAIT;
emit_mir_instruction(ctx, wait);
++ctx->instruction_count;
}
emit_cf_list(ctx, &func->impl->body);
free(ctx->already_emitted);
break; /* TODO: Multi-function shaders */