From: Jason Ekstrand Date: Mon, 2 May 2016 19:30:45 +0000 (-0700) Subject: i965/blorp: Add support for discard-based bounds checks to the NIR path X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=6adb8d6d3a4f3586101937ab8754805ef2b3b5eb;p=mesa.git i965/blorp: Add support for discard-based bounds checks to the NIR path Reviewed-by: Topi Pohjolainen --- diff --git a/src/mesa/drivers/dri/i965/brw_blorp_blit.cpp b/src/mesa/drivers/dri/i965/brw_blorp_blit.cpp index 40b8b947adb..56078456b6f 100644 --- a/src/mesa/drivers/dri/i965/brw_blorp_blit.cpp +++ b/src/mesa/drivers/dri/i965/brw_blorp_blit.cpp @@ -427,6 +427,23 @@ blorp_blit_apply_transform(nir_builder *b, nir_ssa_def *src_pos, return pos; } +static inline void +blorp_nir_discard_if_outside_rect(nir_builder *b, nir_ssa_def *pos, + struct brw_blorp_blit_vars *v) +{ + nir_ssa_def *c0, *c1, *c2, *c3; + c0 = nir_ult(b, nir_channel(b, pos, 0), nir_load_var(b, v->u_dst_x0)); + c1 = nir_uge(b, nir_channel(b, pos, 0), nir_load_var(b, v->u_dst_x1)); + c2 = nir_ult(b, nir_channel(b, pos, 1), nir_load_var(b, v->u_dst_y0)); + c3 = nir_uge(b, nir_channel(b, pos, 1), nir_load_var(b, v->u_dst_y1)); + nir_ssa_def *oob = nir_ior(b, nir_ior(b, c0, c1), nir_ior(b, c2, c3)); + + nir_intrinsic_instr *discard = + nir_intrinsic_instr_create(b->shader, nir_intrinsic_discard_if); + discard->src[0] = nir_src_for_ssa(oob); + nir_builder_instr_insert(b, &discard->instr); +} + static nir_tex_instr * blorp_create_nir_tex_instr(nir_shader *shader, nir_texop op, nir_ssa_def *pos, unsigned num_srcs, @@ -785,7 +802,7 @@ brw_blorp_build_nir_shader(struct brw_context *brw, * now is the time to do it. */ if (key->use_kill) - goto fail; + blorp_nir_discard_if_outside_rect(&b, dst_pos, &v); src_pos = blorp_blit_apply_transform(&b, nir_i2f(&b, dst_pos), &v);