From 73bf626713f7efc43164f7649fc143f4a94299cb Mon Sep 17 00:00:00 2001 From: =?utf8?q?Michel=20D=C3=A4nzer?= Date: Wed, 20 Feb 2013 13:06:18 +0100 Subject: [PATCH] r600g/Cayman: Fix blending using destination alpha factor but non-alpha dest MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Only compile tested, but should fix at least some piglit fbo-blending tests. NOTE: This is a candidate for the stable branches. Reviewed-by: Marek Olšák --- src/gallium/drivers/r600/evergreen_state.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/src/gallium/drivers/r600/evergreen_state.c b/src/gallium/drivers/r600/evergreen_state.c index ad0a62e968a..fd736138710 100644 --- a/src/gallium/drivers/r600/evergreen_state.c +++ b/src/gallium/drivers/r600/evergreen_state.c @@ -1460,10 +1460,15 @@ void evergreen_init_color_surface(struct r600_context *rctx, S_028C74_NON_DISP_TILING_ORDER(non_disp_tiling) | S_028C74_FMASK_BANK_HEIGHT(fmask_bankh); - if (rctx->chip_class == CAYMAN && rtex->resource.b.b.nr_samples > 1) { - unsigned log_samples = util_logbase2(rtex->resource.b.b.nr_samples); - color_attrib |= S_028C74_NUM_SAMPLES(log_samples) | - S_028C74_NUM_FRAGMENTS(log_samples); + if (rctx->chip_class == CAYMAN) { + color_attrib |= S_028C74_FORCE_DST_ALPHA_1(desc->swizzle[3] == + UTIL_FORMAT_SWIZZLE_1); + + if (rtex->resource.b.b.nr_samples > 1) { + unsigned log_samples = util_logbase2(rtex->resource.b.b.nr_samples); + color_attrib |= S_028C74_NUM_SAMPLES(log_samples) | + S_028C74_NUM_FRAGMENTS(log_samples); + } } ntype = V_028C70_NUMBER_UNORM; -- 2.30.2