intel/isl: Rename supports_lossless_compression to supports_ccs_e

The term "lossless compression" could potentially mean multisample
color compression, single-sample color compression or HiZ because they
are all lossless.  The term CCS_E, however, has a very precise meaning;
in ISL and is only used to refer to single-sample color compression.
It's also much shorter which is nice.

Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Chad Versace <chadversary@chromium.org>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Nanley Chery <nanley.g.chery@intel.com>

src/intel/isl/isl.h

@@ -1040,8 +1040,8 @@ bool isl_format_supports_filtering(const struct gen_device_info *devinfo,
                                    enum isl_format format);
 bool isl_format_supports_vertex_fetch(const struct gen_device_info *devinfo,
                                       enum isl_format format);
-bool isl_format_supports_lossless_compression(const struct gen_device_info *devinfo,
-                                              enum isl_format format);
+bool isl_format_supports_ccs_e(const struct gen_device_info *devinfo,
+                               enum isl_format format);
 bool isl_format_supports_multisampling(const struct gen_device_info *devinfo,
                                        enum isl_format format);
 

src/intel/isl/isl_format.c

@@ -37,7 +37,7 @@ struct surface_format_info {
    uint8_t input_vb;
    uint8_t streamed_output_vb;
    uint8_t color_processing;
-   uint8_t lossless_compression;
+   uint8_t ccs_e;
 };
 
 /* This macro allows us to write the table almost as it appears in the PRM,
@@ -438,13 +438,13 @@ isl_format_supports_vertex_fetch(const struct gen_device_info *devinfo,
 }
 
 bool
-isl_format_supports_lossless_compression(const struct gen_device_info *devinfo,
-                                         enum isl_format format)
+isl_format_supports_ccs_e(const struct gen_device_info *devinfo,
+                          enum isl_format format)
 {
    if (!format_info[format].exists)
       return false;
 
-   return format_gen(devinfo) >= format_info[format].lossless_compression;
+   return format_gen(devinfo) >= format_info[format].ccs_e;
 }
 
 bool

src/intel/vulkan/anv_image.c

@@ -229,7 +229,7 @@ make_surface(const struct anv_device *dev,
              * leave compression on at all times for these formats.
              */
             if (!(vk_info->flags & VK_IMAGE_CREATE_MUTABLE_FORMAT_BIT) &&
-                isl_format_supports_lossless_compression(&dev->info, format)) {
+                isl_format_supports_ccs_e(&dev->info, format)) {
                if (vk_info->usage & VK_IMAGE_USAGE_STORAGE_BIT) {
                   /*
                    * For now, we leave compression off for anything that may

src/intel/vulkan/genX_cmd_buffer.c

@@ -266,8 +266,7 @@ color_attachment_compute_aux_usage(struct anv_device *device,
       att_state->fast_clear = false;
    }
 
-   if (isl_format_supports_lossless_compression(&device->info,
-                                                iview->isl.format)) {
+   if (isl_format_supports_ccs_e(&device->info, iview->isl.format)) {
       att_state->aux_usage = ISL_AUX_USAGE_CCS_E;
       att_state->input_aux_usage = ISL_AUX_USAGE_CCS_E;
    } else if (att_state->fast_clear) {

src/mesa/drivers/dri/i965/brw_context.c

@@ -208,8 +208,7 @@ intel_texture_view_requires_resolve(struct brw_context *brw,
 
    const uint32_t brw_format = brw_format_for_mesa_format(intel_tex->_Format);
 
-   if (isl_format_supports_lossless_compression(&brw->screen->devinfo,
-                                                brw_format))
+   if (isl_format_supports_ccs_e(&brw->screen->devinfo, brw_format))
       return false;
 
    perf_debug("Incompatible sampling format (%s) for rbc (%s)\n",

src/mesa/drivers/dri/i965/brw_wm_surface_state.c

@@ -447,8 +447,7 @@ brw_texture_view_sane(const struct brw_context *brw,
    if (!intel_miptree_is_lossless_compressed(brw, mt))
       return true;
 
-   if (isl_format_supports_lossless_compression(&brw->screen->devinfo,
-                                                view->format))
+   if (isl_format_supports_ccs_e(&brw->screen->devinfo, view->format))
       return true;
 
    /* Logic elsewhere needs to take care to resolve the color buffer prior

src/mesa/drivers/dri/i965/intel_mipmap_tree.c

@@ -210,8 +210,7 @@ intel_miptree_supports_non_msrt_fast_clear(struct brw_context *brw,
    if (brw->gen >= 9) {
       mesa_format linear_format = _mesa_get_srgb_format_linear(mt->format);
       const uint32_t brw_format = brw_format_for_mesa_format(linear_format);
-      return isl_format_supports_lossless_compression(&brw->screen->devinfo,
-                                                      brw_format);
+      return isl_format_supports_ccs_e(&brw->screen->devinfo, brw_format);
    } else
       return true;
 }