intel/isl: Add a format_supports_ccs_d helper

[mesa.git] / src / intel / isl / isl.h

diff --git a/src/intel/isl/isl.h b/src/intel/isl/isl.h
index 219dd90f910d401e4b22e0c0f44ab2501332734f..47e4a1eb4ee432e276d054f8005de53d84198bfa 100644 (file)
--- a/src/intel/isl/isl.h
+++ b/src/intel/isl/isl.h
@@ -35,7 +35,8 @@
  *    - functions
  */
 
-#pragma once
+#ifndef ISL_H
+#define ISL_H
 
 #include <assert.h>
 #include <stdbool.h>
@@ -358,7 +359,7 @@ enum isl_format {
     * actual hardware formats *must* come before these in the list.
     */
 
-   /* Formats for color compression surfaces */
+   /* Formats for auxiliary surfaces */
    ISL_FORMAT_HIZ,
    ISL_FORMAT_MCS_2X,
    ISL_FORMAT_MCS_4X,
@@ -670,6 +671,17 @@ struct isl_device {
    const struct gen_device_info *info;
    bool use_separate_stencil;
    bool has_bit6_swizzling;
+
+   /**
+    * Describes the layout of a RENDER_SURFACE_STATE structure for the
+    * current gen.
+    */
+   struct {
+      uint8_t size;
+      uint8_t align;
+      uint8_t addr_offset;
+      uint8_t aux_addr_offset;
+   } ss;
 };
 
 struct isl_extent2d {
@@ -728,7 +740,26 @@ struct isl_format_layout {
 struct isl_tile_info {
    enum isl_tiling tiling;
 
-   /** The logical size of the tile in units of surface elements
+   /* The size (in bits per block) of a single surface element
+    *
+    * For surfaces with power-of-two formats, this is the same as
+    * isl_format_layout::bpb.  For non-power-of-two formats it may be smaller.
+    * The logical_extent_el field is in terms of elements of this size.
+    *
+    * For example, consider ISL_FORMAT_R32G32B32_FLOAT for which
+    * isl_format_layout::bpb is 96 (a non-power-of-two).  In this case, none
+    * of the tiling formats can actually hold an integer number of 96-bit
+    * surface elements so isl_tiling_get_info returns an isl_tile_info for a
+    * 32-bit element size.  It is the responsibility of the caller to
+    * recognize that 32 != 96 ad adjust accordingly.  For instance, to compute
+    * the width of a surface in tiles, you would do:
+    *
+    * width_tl = DIV_ROUND_UP(width_el * (format_bpb / tile_info.format_bpb),
+    *                         tile_info.logical_extent_el.width);
+    */
+   uint32_t format_bpb;
+
+   /** The logical size of the tile in units of format_bpb size elements
     *
     * This field determines how a given surface is cut up into tiles.  It is
     * used to compute the size of a surface in tiles and can be used to
@@ -1009,8 +1040,12 @@ 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_d(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);
 
 bool isl_format_has_unorm_channel(enum isl_format fmt) ATTRIBUTE_CONST;
 bool isl_format_has_snorm_channel(enum isl_format fmt) ATTRIBUTE_CONST;
@@ -1133,15 +1168,8 @@ isl_tiling_is_std_y(enum isl_tiling tiling)
    return (1u << tiling) & ISL_TILING_STD_Y_MASK;
 }
 
-bool
-isl_tiling_get_info(const struct isl_device *dev,
-                    enum isl_tiling tiling,
-                    uint32_t format_bpb,
-                    struct isl_tile_info *info);
-bool
-isl_surf_choose_tiling(const struct isl_device *dev,
-                       const struct isl_surf_init_info *restrict info,
-                       enum isl_tiling *tiling);
+struct isl_extent2d ATTRIBUTE_CONST
+isl_get_interleaved_msaa_px_size_sa(uint32_t samples);
 
 static inline bool
 isl_surf_usage_is_display(isl_surf_usage_flags_t usage)
@@ -1463,3 +1491,5 @@ isl_surf_get_depth_format(const struct isl_device *dev,
 #ifdef __cplusplus
 }
 #endif
+
+#endif /* ISL_H */