From: Jason Ekstrand <jason@jlekstrand.net>
Date: Fri, 7 Feb 2020 22:20:32 +0000 (-0600)
Subject: iris: Enable CCS for copies from HiZ+CCS depth buffers
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=a0d5c7da18c9ace4a2153d1352ac44cb3bd65425;p=mesa.git

iris: Enable CCS for copies from HiZ+CCS depth buffers

Ever since b274469daae, BLORP is able to sample from whatever the
sampler supports.  In c0c899cf7892, we added HiZ support for copies from
HiZ compressed depth buffers but forgot HiZ+CCS.

Reviewed-by: Nanley Chery <nanley.g.chery@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3717>
---

diff --git a/src/gallium/drivers/iris/iris_blit.c b/src/gallium/drivers/iris/iris_blit.c
index 10a157b3ef4..9cb67105f79 100644
--- a/src/gallium/drivers/iris/iris_blit.c
+++ b/src/gallium/drivers/iris/iris_blit.c
@@ -566,20 +566,25 @@ iris_blit(struct pipe_context *ctx, const struct pipe_blit_info *info)
 }
 
 static void
-get_copy_region_aux_settings(const struct gen_device_info *devinfo,
+get_copy_region_aux_settings(struct iris_context *ice,
                              struct iris_resource *res,
                              enum isl_aux_usage *out_aux_usage,
                              bool *out_clear_supported,
                              bool is_render_target)
 {
+   struct iris_screen *screen = (void *) ice->ctx.screen;
+   const struct gen_device_info *devinfo = &screen->devinfo;
+
    switch (res->aux.usage) {
    case ISL_AUX_USAGE_HIZ:
-      if (!is_render_target && iris_sample_with_depth_aux(devinfo, res)) {
-         *out_aux_usage = ISL_AUX_USAGE_HIZ;
-         *out_clear_supported = true;
-      } else {
+   case ISL_AUX_USAGE_HIZ_CCS:
+      if (is_render_target) {
          *out_aux_usage = ISL_AUX_USAGE_NONE;
          *out_clear_supported = false;
+      } else {
+         *out_aux_usage = iris_resource_texture_aux_usage(ice, res,
+                                                          res->surf.format);
+         *out_clear_supported = (*out_aux_usage != ISL_AUX_USAGE_NONE);
       }
       break;
    case ISL_AUX_USAGE_MCS:
@@ -630,15 +635,14 @@ iris_copy_region(struct blorp_context *blorp,
    struct blorp_batch blorp_batch;
    struct iris_context *ice = blorp->driver_ctx;
    struct iris_screen *screen = (void *) ice->ctx.screen;
-   const struct gen_device_info *devinfo = &screen->devinfo;
    struct iris_resource *src_res = (void *) src;
    struct iris_resource *dst_res = (void *) dst;
 
    enum isl_aux_usage src_aux_usage, dst_aux_usage;
    bool src_clear_supported, dst_clear_supported;
-   get_copy_region_aux_settings(devinfo, src_res, &src_aux_usage,
+   get_copy_region_aux_settings(ice, src_res, &src_aux_usage,
                                 &src_clear_supported, false);
-   get_copy_region_aux_settings(devinfo, dst_res, &dst_aux_usage,
+   get_copy_region_aux_settings(ice, dst_res, &dst_aux_usage,
                                 &dst_clear_supported, true);
 
    if (iris_batch_references(batch, src_res->bo))