From: Marek Olšák Date: Sat, 31 Jan 2015 18:00:44 +0000 (+0100) Subject: radeonsi: fix instanced arrays with non-zero start instance X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=50908a89188ee7f079551622cbc8a37c04e8e8ac;p=mesa.git radeonsi: fix instanced arrays with non-zero start instance Fixes piglit ARB_base_instance/arb_base_instance-drawarrays. Cc: 10.3 10.4 Reviewed-by: Michel Dänzer --- diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c index fb1419ddb4d..4b1279cc26b 100644 --- a/src/gallium/drivers/radeonsi/si_shader.c +++ b/src/gallium/drivers/radeonsi/si_shader.c @@ -236,14 +236,14 @@ static LLVMValueRef get_instance_index_for_fetch( LLVMValueRef result = LLVMGetParam(radeon_bld->main_fn, si_shader_ctx->param_instance_id); - result = LLVMBuildAdd(gallivm->builder, result, LLVMGetParam( - radeon_bld->main_fn, SI_PARAM_START_INSTANCE), ""); + /* The division must be done before START_INSTANCE is added. */ if (divisor > 1) result = LLVMBuildUDiv(gallivm->builder, result, lp_build_const_int32(gallivm, divisor), ""); - return result; + return LLVMBuildAdd(gallivm->builder, result, LLVMGetParam( + radeon_bld->main_fn, SI_PARAM_START_INSTANCE), ""); } static void declare_input_vs(