From 85d0bec9616bc1ffa8e4ab5e7c5d12ff4e414872 Mon Sep 17 00:00:00 2001 From: Jason Ekstrand Date: Mon, 12 Feb 2018 16:03:28 -0800 Subject: [PATCH] anv: Be more careful about fast-clear colors Previously, we just used all the channels regardless of the format. This is less than ideal because some channels may have undefined values and this should be ok from the client's perspective. Even though the driver should do the correct thing regardless of what is in the undefined value, it makes things less deterministic. In particular, the driver may choose to fast-clear or not based on undefined values. This level of nondeterminism is bad. Cc: mesa-stable@lists.freedesktop.org Reviewed-by: Nanley Chery --- src/intel/vulkan/genX_cmd_buffer.c | 46 ++++++++++++++++---------------------- 1 file changed, 19 insertions(+), 27 deletions(-) diff --git a/src/intel/vulkan/genX_cmd_buffer.c b/src/intel/vulkan/genX_cmd_buffer.c index fd1119c..7aab116 100644 --- a/src/intel/vulkan/genX_cmd_buffer.c +++ b/src/intel/vulkan/genX_cmd_buffer.c @@ -202,24 +202,6 @@ add_image_view_relocs(struct anv_cmd_buffer *cmd_buffer, } } -static bool -color_is_zero_one(VkClearColorValue value, enum isl_format format) -{ - if (isl_format_has_int_channel(format)) { - for (unsigned i = 0; i < 4; i++) { - if (value.int32[i] != 0 && value.int32[i] != 1) - return false; - } - } else { - for (unsigned i = 0; i < 4; i++) { - if (value.float32[i] != 0.0f && value.float32[i] != 1.0f) - return false; - } - } - - return true; -} - static void color_attachment_compute_aux_usage(struct anv_device * device, struct anv_cmd_state * cmd_state, @@ -283,13 +265,25 @@ color_attachment_compute_aux_usage(struct anv_device * device, assert(iview->image->planes[0].aux_surface.isl.usage & ISL_SURF_USAGE_CCS_BIT); + const struct isl_format_layout *view_fmtl = + isl_format_get_layout(iview->planes[0].isl.format); + union isl_color_value clear_color = {}; + +#define COPY_CLEAR_COLOR_CHANNEL(c, i) \ + if (view_fmtl->channels.c.bits) \ + clear_color.u32[i] = att_state->clear_value.color.uint32[i] + + COPY_CLEAR_COLOR_CHANNEL(r, 0); + COPY_CLEAR_COLOR_CHANNEL(g, 1); + COPY_CLEAR_COLOR_CHANNEL(b, 2); + COPY_CLEAR_COLOR_CHANNEL(a, 3); + +#undef COPY_CLEAR_COLOR_CHANNEL + att_state->clear_color_is_zero_one = - color_is_zero_one(att_state->clear_value.color, iview->planes[0].isl.format); + isl_color_value_is_zero_one(clear_color, iview->planes[0].isl.format); att_state->clear_color_is_zero = - att_state->clear_value.color.uint32[0] == 0 && - att_state->clear_value.color.uint32[1] == 0 && - att_state->clear_value.color.uint32[2] == 0 && - att_state->clear_value.color.uint32[3] == 0; + isl_color_value_is_zero(clear_color, iview->planes[0].isl.format); if (att_state->pending_clear_aspects == VK_IMAGE_ASPECT_COLOR_BIT) { /* Start off assuming fast clears are possible */ @@ -341,10 +335,8 @@ color_attachment_compute_aux_usage(struct anv_device * device, "LOAD_OP_CLEAR. Only fast-clearing the first slice"); } - if (att_state->fast_clear) { - memcpy(fast_clear_color->u32, att_state->clear_value.color.uint32, - sizeof(fast_clear_color->u32)); - } + if (att_state->fast_clear) + *fast_clear_color = clear_color; } else { att_state->fast_clear = false; } -- 2.7.4