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radv/ac: hook up tessellation intrinsics.

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This just adds support for the nir intrinsics that tessellation uses.

Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie
2017-03-30 08:25:18 +01:00
parent d8ab71b207
commit 326b9bc6dc
1 changed files with 34 additions and 1 deletions
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src/amd/common/ac_nir_to_llvm.c
+34 -1
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@@ -3253,6 +3253,26 @@ visit_end_primitive(struct nir_to_llvm_context *ctx,
ac_build_sendmsg(&ctx->ac, AC_SENDMSG_GS_OP_CUT | AC_SENDMSG_GS | (0 << 8), ctx->gs_wave_id);
}
static LLVMValueRef
visit_load_tess_coord(struct nir_to_llvm_context *ctx,
nir_intrinsic_instr *instr)
{
LLVMValueRef coord[4] = {
ctx->tes_u,
ctx->tes_v,
ctx->f32zero,
ctx->f32zero,
};
if (ctx->tes_primitive_mode == GL_TRIANGLES)
coord[2] = LLVMBuildFSub(ctx->builder, ctx->f32one,
LLVMBuildFAdd(ctx->builder, coord[0], coord[1], ""), "");
LLVMValueRef result = ac_build_gather_values(&ctx->ac, coord, instr->num_components);
return LLVMBuildBitCast(ctx->builder, result,
get_def_type(ctx, &instr->dest.ssa), "");
}
static void visit_intrinsic(struct nir_to_llvm_context *ctx,
nir_intrinsic_instr *instr)
{
@@ -3282,11 +3302,18 @@ static void visit_intrinsic(struct nir_to_llvm_context *ctx,
result = ctx->draw_index;
break;
case nir_intrinsic_load_invocation_id:
result = ctx->gs_invocation_id;
if (ctx->stage == MESA_SHADER_TESS_CTRL)
result = unpack_param(ctx, ctx->tcs_rel_ids, 8, 5);
else
result = ctx->gs_invocation_id;
break;
case nir_intrinsic_load_primitive_id:
if (ctx->stage == MESA_SHADER_GEOMETRY)
result = ctx->gs_prim_id;
else if (ctx->stage == MESA_SHADER_TESS_CTRL)
result = ctx->tcs_patch_id;
else if (ctx->stage == MESA_SHADER_TESS_EVAL)
result = ctx->tes_patch_id;
else
fprintf(stderr, "Unknown primitive id intrinsic: %d", ctx->stage);
break;
@@ -3408,6 +3435,12 @@ static void visit_intrinsic(struct nir_to_llvm_context *ctx,
case nir_intrinsic_end_primitive:
visit_end_primitive(ctx, instr);
break;
case nir_intrinsic_load_tess_coord:
result = visit_load_tess_coord(ctx, instr);
break;
case nir_intrinsic_load_patch_vertices_in:
result = LLVMConstInt(ctx->i32, ctx->options->key.tcs.input_vertices, false);
break;
default:
fprintf(stderr, "Unknown intrinsic: ");
nir_print_instr(&instr->instr, stderr);