[Mesa-dev] [PATCH 04/18] ac: call load_tcs_input() via the abi

[Timothy Arceri]

This also enables some code sharing with tes.
---
 src/amd/common/ac_nir_to_llvm.c | 37 ++++++++++++++++++-------------------
 1 file changed, 18 insertions(+), 19 deletions(-)

diff --git a/src/amd/common/ac_nir_to_llvm.c b/src/amd/common/ac_nir_to_llvm.c
index 78ae25ee147..3869161967d 100644
--- a/src/amd/common/ac_nir_to_llvm.c
+++ b/src/amd/common/ac_nir_to_llvm.c
@@ -2688,49 +2688,48 @@ get_dw_address(struct nir_to_llvm_context *ctx,
 	dw_addr = LLVMBuildAdd(ctx->builder, dw_addr,
 			       LLVMConstInt(ctx->ac.i32, param * 4, false), "");
 
 	if (const_index && compact_const_index)
 		dw_addr = LLVMBuildAdd(ctx->builder, dw_addr,
 				       LLVMConstInt(ctx->ac.i32, const_index, false), "");
 	return dw_addr;
 }
 
 static LLVMValueRef
-load_tcs_input(struct nir_to_llvm_context *ctx,
-	       nir_intrinsic_instr *instr)
+load_tcs_input(struct ac_shader_abi *abi,
+	       LLVMValueRef vertex_index,
+	       LLVMValueRef indir_index,
+	       unsigned const_index,
+	       unsigned location,
+	       unsigned driver_location,
+	       LLVMTypeRef type,
+	       unsigned component,
+	       unsigned num_components,
+	       bool is_patch,
+	       bool is_compact)
 {
+	struct nir_to_llvm_context *ctx = nir_to_llvm_context_from_abi(abi);
 	LLVMValueRef dw_addr, stride;
-	unsigned const_index;
-	LLVMValueRef vertex_index;
-	LLVMValueRef indir_index;
-	unsigned param;
 	LLVMValueRef value[4], result;
-	const bool per_vertex = nir_is_per_vertex_io(instr->variables[0]->var, ctx->stage);
-	const bool is_compact = instr->variables[0]->var->data.compact;
-	param = shader_io_get_unique_index(instr->variables[0]->var->data.location);
-	get_deref_offset(ctx->nir, instr->variables[0],
-			 false, NULL, per_vertex ? &vertex_index : NULL,
-			 &const_index, &indir_index);
+	unsigned param = shader_io_get_unique_index(location);
 
 	stride = unpack_param(&ctx->ac, ctx->tcs_in_layout, 13, 8);
 	dw_addr = get_tcs_in_current_patch_offset(ctx);
 	dw_addr = get_dw_address(ctx, dw_addr, param, const_index, is_compact, vertex_index, stride,
 				 indir_index);
 
-	unsigned comp = instr->variables[0]->var->data.location_frac;
-	for (unsigned i = 0; i < instr->num_components + comp; i++) {
+	for (unsigned i = 0; i < num_components + component; i++) {
 		value[i] = ac_lds_load(&ctx->ac, dw_addr);
 		dw_addr = LLVMBuildAdd(ctx->builder, dw_addr,
 				       ctx->ac.i32_1, "");
 	}
-	result = ac_build_varying_gather_values(&ctx->ac, value, instr->num_components, comp);
-	result = LLVMBuildBitCast(ctx->builder, result, get_def_type(ctx->nir, &instr->dest.ssa), "");
+	result = ac_build_varying_gather_values(&ctx->ac, value, num_components, component);
 	return result;
 }
 
 static LLVMValueRef
 load_tcs_output(struct nir_to_llvm_context *ctx,
 	       nir_intrinsic_instr *instr)
 {
 	LLVMValueRef dw_addr;
 	LLVMValueRef stride = NULL;
 	LLVMValueRef value[4], result;
@@ -2984,23 +2983,22 @@ static LLVMValueRef visit_load_var(struct ac_nir_context *ctx,
 	bool vs_in = ctx->stage == MESA_SHADER_VERTEX &&
 	             instr->variables[0]->var->data.mode == nir_var_shader_in;
 	get_deref_offset(ctx, instr->variables[0], vs_in, NULL, NULL,
 				      &const_index, &indir_index);
 
 	if (instr->dest.ssa.bit_size == 64)
 		ve *= 2;
 
 	switch (instr->variables[0]->var->data.mode) {
 	case nir_var_shader_in:
-		if (ctx->stage == MESA_SHADER_TESS_CTRL)
-			return load_tcs_input(ctx->nctx, instr);
-		if (ctx->stage == MESA_SHADER_TESS_EVAL) {
+		if (ctx->stage == MESA_SHADER_TESS_CTRL ||
+		    ctx->stage == MESA_SHADER_TESS_EVAL) {
 			LLVMValueRef result;
 			LLVMValueRef vertex_index = NULL;
 			LLVMValueRef indir_index = NULL;
 			unsigned const_index = 0;
 			unsigned location = instr->variables[0]->var->data.location;
 			unsigned driver_location = instr->variables[0]->var->data.driver_location;
 			const bool is_patch =  instr->variables[0]->var->data.patch;
 			const bool is_compact = instr->variables[0]->var->data.compact;
 
 			get_deref_offset(ctx, instr->variables[0],
@@ -6580,20 +6578,21 @@ LLVMModuleRef ac_translate_nir_to_llvm(LLVMTargetMachineRef tm,
 		ctx.num_output_clips = shaders[i]->info.clip_distance_array_size;
 		ctx.num_output_culls = shaders[i]->info.cull_distance_array_size;
 
 		if (shaders[i]->info.stage == MESA_SHADER_GEOMETRY) {
 			ctx.gs_next_vertex = ac_build_alloca(&ctx.ac, ctx.ac.i32, "gs_next_vertex");
 			ctx.gs_max_out_vertices = shaders[i]->info.gs.vertices_out;
 			ctx.abi.load_inputs = load_gs_input;
 		} else if (shaders[i]->info.stage == MESA_SHADER_TESS_CTRL) {
 			ctx.tcs_outputs_read = shaders[i]->info.outputs_read;
 			ctx.tcs_patch_outputs_read = shaders[i]->info.patch_outputs_read;
+			ctx.abi.load_tess_inputs = load_tcs_input;
 		} else if (shaders[i]->info.stage == MESA_SHADER_TESS_EVAL) {
 			ctx.tes_primitive_mode = shaders[i]->info.tess.primitive_mode;
 			ctx.abi.load_tess_inputs = load_tes_input;
 		} else if (shaders[i]->info.stage == MESA_SHADER_VERTEX) {
 			if (shader_info->info.vs.needs_instance_id) {
 				ctx.shader_info->vs.vgpr_comp_cnt =
 					MAX2(3, ctx.shader_info->vs.vgpr_comp_cnt);
 			}
 		} else if (shaders[i]->info.stage == MESA_SHADER_FRAGMENT) {
 			shader_info->fs.can_discard = shaders[i]->info.fs.uses_discard;
-- 
2.14.3