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radv/gfx10: add support for NGG passthrough mode 

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
This commit is contained in:
Samuel Pitoiset 2020-01-09 08:24:11 +01:00
parent 471738e97b
commit 1db276ba23
2 changed files with 14 additions and 8 deletions
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20
src/amd/vulkan/radv_nir_to_llvm.c
View File

@ -2974,15 +2974,19 @@ handle_ngg_outputs_post_2(struct radv_shader_context *ctx)
{
struct ac_ngg_prim prim = {};
prim.num_vertices = num_vertices;
prim.isnull = ctx->ac.i1false;
memcpy(prim.index, vtxindex, sizeof(vtxindex[0]) * 3);
if (ctx->args->options->key.vs_common_out.as_ngg_passthrough) {
prim.passthrough = ac_get_arg(&ctx->ac, ctx->args->gs_vtx_offset[0]);
} else {
prim.num_vertices = num_vertices;
prim.isnull = ctx->ac.i1false;
memcpy(prim.index, vtxindex, sizeof(vtxindex[0]) * 3);
for (unsigned i = 0; i < num_vertices; ++i) {
tmp = LLVMBuildLShr(builder,
ac_get_arg(&ctx->ac, ctx->args->ac.gs_invocation_id),
LLVMConstInt(ctx->ac.i32, 8 + i, false), "");
prim.edgeflag[i] = LLVMBuildTrunc(builder, tmp, ctx->ac.i1, "");
for (unsigned i = 0; i < num_vertices; ++i) {
tmp = LLVMBuildLShr(builder,
ac_get_arg(&ctx->ac, ctx->args->ac.gs_invocation_id),
LLVMConstInt(ctx->ac.i32, 8 + i, false), "");
prim.edgeflag[i] = LLVMBuildTrunc(builder, tmp, ctx->ac.i1, "");
}
}
ac_build_export_prim(&ctx->ac, &prim);

2
src/amd/vulkan/radv_pipeline.c
View File

@ -4475,6 +4475,8 @@ radv_compute_vgt_shader_stages_en(const struct radv_pipeline *pipeline)
stages |= S_028B54_PRIMGEN_EN(1);
if (pipeline->streamout_shader)
stages |= S_028B54_NGG_WAVE_ID_EN(1);
if (radv_pipeline_has_ngg_passthrough(pipeline))
stages |= S_028B54_PRIMGEN_PASSTHRU_EN(1);
} else if (radv_pipeline_has_gs(pipeline)) {
stages |= S_028B54_VS_EN(V_028B54_VS_STAGE_COPY_SHADER);
}