From 1a22b12fc51e80c20c700f93904ffd12caa73473 Mon Sep 17 00:00:00 2001 From: Neil Roberts Date: Fri, 11 Sep 2015 18:09:46 +0100 Subject: [PATCH] i965/meta: Support 16x MSAA in the meta stencil blit The destination rectangle is now drawn at 4x4 the size and the shader code to calculate the sample number is adjusted accordingly. Acked-by: Ben Widawsky --- .../drivers/dri/i965/brw_meta_stencil_blit.c | 22 ++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-) diff --git a/src/mesa/drivers/dri/i965/brw_meta_stencil_blit.c b/src/mesa/drivers/dri/i965/brw_meta_stencil_blit.c index cbbb919c6ee..4e9aa949506 100644 --- a/src/mesa/drivers/dri/i965/brw_meta_stencil_blit.c +++ b/src/mesa/drivers/dri/i965/brw_meta_stencil_blit.c @@ -163,6 +163,13 @@ static const char *fs_tmpl = " txl_coords.x = ((X & int(0xfff8)) >> 2) | (X & int(0x1));\n" " txl_coords.y = ((Y & int(0xfffc)) >> 1) | (Y & int(0x1));\n" " sample_index = (X & 0x4) | (Y & 0x2) | ((X & 0x2) >> 1);\n" + " break;\n" + " case 16:\n" + " txl_coords.x = ((X & int(0xfff8)) >> 2) | (X & int(0x1));\n" + " txl_coords.y = ((Y & int(0xfff8)) >> 2) | (Y & int(0x1));\n" + " sample_index = (((Y & 0x4) << 1) | (X & 0x4) | (Y & 0x2) |\n" + " ((X & 0x2) >> 1));\n" + " break;\n" " }\n" "}\n" "\n" @@ -313,11 +320,16 @@ adjust_msaa(struct blit_dims *dims, int num_samples) dims->dst_x0 *= 2; dims->dst_x1 *= 2; } else if (num_samples) { - const int x_num_samples = num_samples / 2; - dims->dst_x0 = ROUND_DOWN_TO(dims->dst_x0 * x_num_samples, num_samples); - dims->dst_y0 = ROUND_DOWN_TO(dims->dst_y0 * 2, 4); - dims->dst_x1 = ALIGN(dims->dst_x1 * x_num_samples, num_samples); - dims->dst_y1 = ALIGN(dims->dst_y1 * 2, 4); + const int y_num_samples = num_samples >= 16 ? 4 : 2; + const int x_num_samples = num_samples / y_num_samples; + dims->dst_x0 = ROUND_DOWN_TO(dims->dst_x0 * x_num_samples, + x_num_samples * 2); + dims->dst_y0 = ROUND_DOWN_TO(dims->dst_y0 * y_num_samples, + y_num_samples * 2); + dims->dst_x1 = ALIGN(dims->dst_x1 * x_num_samples, + x_num_samples * 2); + dims->dst_y1 = ALIGN(dims->dst_y1 * y_num_samples, + y_num_samples * 2); } } -- 2.30.2