Module: Mesa Branch: intel-ci Commit: 185ee6b612aca567dfaa31ae1be93e3385af4be4 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=185ee6b612aca567dfaa31ae1be93e3385af4be4
Author: Nicolai Hähnle <[email protected]> Date: Tue Jan 19 15:18:31 2016 -0500 radeonsi: fix discard-only fragment shaders (11.1 version) When a fragment shader is used that has no outputs but does conditional discard (KILL_IF), all fragments are killed without this patch. By comparing various register settings, my conclusion is that the exec mask is either not properly forwarded to the DB by NULL exports or ends up being unused, at least when there is _only_ a NULL export (the ISA documentation claims that NULL exports can be used to override a previously exported exec mask). Of the various approaches I have tried to work around the problem, this one seems to be the least invasive one. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=93761 Cc: "11.0 11.1" <[email protected]> Reviewed-by: Marek Olšák <[email protected]> --- src/gallium/drivers/radeonsi/si_shader.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/gallium/drivers/radeonsi/si_shader.c b/src/gallium/drivers/radeonsi/si_shader.c index 1baa2eb..1c1aaa0 100644 --- a/src/gallium/drivers/radeonsi/si_shader.c +++ b/src/gallium/drivers/radeonsi/si_shader.c @@ -2291,6 +2291,9 @@ static void si_llvm_emit_fs_epilogue(struct lp_build_tgsi_context * bld_base) last_args[6]= uint->zero; last_args[7]= uint->zero; last_args[8]= uint->zero; + + if (info->uses_kill) + si_shader_ctx->shader->spi_shader_z_format = V_028710_SPI_SHADER_32_R; } /* Specify whether the EXEC mask represents the valid mask */ _______________________________________________ mesa-commit mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/mesa-commit
