diff options
Diffstat (limited to 'src/gallium/drivers/radeonsi/si_shader_llvm_vs.c')
| -rw-r--r-- | src/gallium/drivers/radeonsi/si_shader_llvm_vs.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/src/gallium/drivers/radeonsi/si_shader_llvm_vs.c b/src/gallium/drivers/radeonsi/si_shader_llvm_vs.c index d41abdaff79..603381f46f0 100644 --- a/src/gallium/drivers/radeonsi/si_shader_llvm_vs.c +++ b/src/gallium/drivers/radeonsi/si_shader_llvm_vs.c @@ -1054,18 +1054,19 @@ void si_llvm_build_vs_prolog(struct si_shader_context *ctx, union si_shader_part si_llvm_build_ret(ctx, ret); } -static LLVMValueRef get_base_vertex(struct ac_shader_abi *abi) +static LLVMValueRef get_base_vertex(struct ac_shader_abi *abi, bool non_indexed_is_zero) { struct si_shader_context *ctx = si_shader_context_from_abi(abi); + /* This doesn't happen with GL: */ + if (!non_indexed_is_zero) + return ac_get_arg(&ctx->ac, ctx->args.base_vertex); + /* For non-indexed draws, the base vertex set by the driver * (for direct draws) or the CP (for indirect draws) is the * first vertex ID, but GLSL expects 0 to be returned. */ - LLVMValueRef vs_state = ac_get_arg(&ctx->ac, ctx->vs_state_bits); - LLVMValueRef indexed; - - indexed = LLVMBuildLShr(ctx->ac.builder, vs_state, ctx->ac.i32_1, ""); + LLVMValueRef indexed = si_unpack_param(ctx, ctx->vs_state_bits, 1, 1); indexed = LLVMBuildTrunc(ctx->ac.builder, indexed, ctx->ac.i1, ""); return LLVMBuildSelect(ctx->ac.builder, indexed, ac_get_arg(&ctx->ac, ctx->args.base_vertex), |