From 5c0436dbf87fef76ba67456f215d9285c38f1816 Mon Sep 17 00:00:00 2001 From: Iago Toral Quiroga Date: Tue, 16 Jun 2015 20:16:15 +0200 Subject: [PATCH] i965/nir/vec4: Implement conditional statements (nir_cf_node_if) The same we do in the FS NIR backend, only that here we need to consider the number of components in the condition and adjust the swizzle accordingly. Reviewed-by: Jason Ekstrand --- src/mesa/drivers/dri/i965/brw_vec4_nir.cpp | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp index a3dfddf7d3c..7ce571a2261 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp +++ b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp @@ -282,7 +282,21 @@ vec4_visitor::nir_emit_cf_list(exec_list *list) void vec4_visitor::nir_emit_if(nir_if *if_stmt) { - /* @TODO: Not yet implemented */ + /* First, put the condition in f0 */ + src_reg condition = get_nir_src(if_stmt->condition, BRW_REGISTER_TYPE_D, 1); + vec4_instruction *inst = emit(MOV(dst_null_d(), condition)); + inst->conditional_mod = BRW_CONDITIONAL_NZ; + + emit(IF(BRW_PREDICATE_NORMAL)); + + nir_emit_cf_list(&if_stmt->then_list); + + /* note: if the else is empty, dead CF elimination will remove it */ + emit(BRW_OPCODE_ELSE); + + nir_emit_cf_list(&if_stmt->else_list); + + emit(BRW_OPCODE_ENDIF); } void -- 2.30.2