From 6f428328d34bed16edb8709e4a117eb710d7893d Mon Sep 17 00:00:00 2001 From: =?utf8?q?Marek=20Ol=C5=A1=C3=A1k?= Date: Wed, 20 Jan 2016 01:45:21 +0100 Subject: [PATCH] radeonsi: implement SAMPLEPOS system value without a constant buffer load MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit We always get per-sample input position. Reviewed-by: Edward O'Callaghan Reviewed-by: Nicolai Hähnle --- src/gallium/drivers/radeonsi/si_shader.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c index 0c5fd326a5d..1bd617fa147 100644 --- a/src/gallium/drivers/radeonsi/si_shader.c +++ b/src/gallium/drivers/radeonsi/si_shader.c @@ -1119,9 +1119,20 @@ static void declare_system_value( value = get_sample_id(radeon_bld); break; - case TGSI_SEMANTIC_SAMPLEPOS: - value = load_sample_position(radeon_bld, get_sample_id(radeon_bld)); + case TGSI_SEMANTIC_SAMPLEPOS: { + LLVMValueRef pos[4] = { + LLVMGetParam(radeon_bld->main_fn, SI_PARAM_POS_X_FLOAT), + LLVMGetParam(radeon_bld->main_fn, SI_PARAM_POS_Y_FLOAT), + lp_build_const_float(gallivm, 0), + lp_build_const_float(gallivm, 0) + }; + pos[0] = lp_build_emit_llvm_unary(&radeon_bld->soa.bld_base, + TGSI_OPCODE_FRC, pos[0]); + pos[1] = lp_build_emit_llvm_unary(&radeon_bld->soa.bld_base, + TGSI_OPCODE_FRC, pos[1]); + value = lp_build_gather_values(gallivm, pos, 4); break; + } case TGSI_SEMANTIC_SAMPLEMASK: /* Smoothing isn't MSAA in GL, but it's MSAA in hardware. -- 2.30.2