diff options
Diffstat (limited to 'src/gallium/drivers/radeonsi/radeonsi_shader.c')
| -rw-r--r-- | src/gallium/drivers/radeonsi/radeonsi_shader.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/gallium/drivers/radeonsi/radeonsi_shader.c b/src/gallium/drivers/radeonsi/radeonsi_shader.c index aec5c2ea222..53e889c19de 100644 --- a/src/gallium/drivers/radeonsi/radeonsi_shader.c +++ b/src/gallium/drivers/radeonsi/radeonsi_shader.c @@ -266,6 +266,33 @@ static void declare_input_fs( return; } + if (decl->Semantic.Name == TGSI_SEMANTIC_FACE) { + LLVMValueRef face, is_face_positive; + + face = build_intrinsic(gallivm->builder, + "llvm.SI.fs.read.face", + input_type, + NULL, 0, LLVMReadNoneAttribute); + is_face_positive = LLVMBuildFCmp(gallivm->builder, + LLVMRealUGT, face, + lp_build_const_float(gallivm, 0.0f), + ""); + + si_shader_ctx->radeon_bld.inputs[radeon_llvm_reg_index_soa(input_index, 0)] = + LLVMBuildSelect(gallivm->builder, + is_face_positive, + lp_build_const_float(gallivm, 1.0f), + lp_build_const_float(gallivm, 0.0f), + ""); + si_shader_ctx->radeon_bld.inputs[radeon_llvm_reg_index_soa(input_index, 1)] = + si_shader_ctx->radeon_bld.inputs[radeon_llvm_reg_index_soa(input_index, 2)] = + lp_build_const_float(gallivm, 0.0f); + si_shader_ctx->radeon_bld.inputs[radeon_llvm_reg_index_soa(input_index, 3)] = + lp_build_const_float(gallivm, 1.0f); + + return; + } + shader->input[input_index].param_offset = shader->ninterp++; attr_number = lp_build_const_int32(gallivm, shader->input[input_index].param_offset); |