i965: Choose tiling in brw_miptree_layout() function

This refactoring is required by later patches in this series.

Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>

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

@@ -459,7 +459,10 @@ brw_miptree_layout_texture_3d(struct brw_context *brw,
 }
 
 void
-brw_miptree_layout(struct brw_context *brw, struct intel_mipmap_tree *mt)
+brw_miptree_layout(struct brw_context *brw,
+                   bool for_bo,
+                   enum intel_miptree_tiling_mode requested,
+                   struct intel_mipmap_tree *mt)
 {
    bool multisampled = mt->num_samples > 1;
    bool gen6_hiz_or_stencil = false;
@@ -543,6 +546,11 @@ brw_miptree_layout(struct brw_context *brw, struct intel_mipmap_tree *mt)
    DBG("%s: %dx%dx%d\n", __func__,
        mt->total_width, mt->total_height, mt->cpp);
 
+   if (!mt->total_width || !mt->total_height) {
+      intel_miptree_release(&mt);
+      return;
+   }
+
    /* On Gen9+ the alignment values are expressed in multiples of the block
     * size
     */
@@ -552,5 +560,11 @@ brw_miptree_layout(struct brw_context *brw, struct intel_mipmap_tree *mt)
       mt->align_w /= i;
       mt->align_h /= j;
    }
+
+   if (!for_bo)
+      mt->tiling = intel_miptree_choose_tiling(brw, mt->format,
+                                               mt->logical_width0,
+                                               mt->num_samples,
+                                               requested, mt);
 }
 

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

@@ -259,6 +259,7 @@ intel_miptree_create_layout(struct brw_context *brw,
                             GLuint depth0,
                             bool for_bo,
                             GLuint num_samples,
+                            enum intel_miptree_tiling_mode requested,
                             bool force_all_slices_at_each_lod,
                             bool disable_aux_buffers)
 {
@@ -473,7 +474,7 @@ intel_miptree_create_layout(struct brw_context *brw,
    if (force_all_slices_at_each_lod)
       mt->array_layout = ALL_SLICES_AT_EACH_LOD;
 
-   brw_miptree_layout(brw, mt);
+   brw_miptree_layout(brw, for_bo, requested, mt);
 
    if (mt->disable_aux_buffers)
       assert(mt->msaa_layout != INTEL_MSAA_LAYOUT_CMS);
@@ -484,7 +485,7 @@ intel_miptree_create_layout(struct brw_context *brw,
 /**
  * \brief Helper function for intel_miptree_create().
  */
-static uint32_t
+uint32_t
 intel_miptree_choose_tiling(struct brw_context *brw,
                             mesa_format format,
                             uint32_t width0,
@@ -628,14 +629,14 @@ intel_lower_compressed_format(struct brw_context *brw, mesa_format format)
 
 struct intel_mipmap_tree *
 intel_miptree_create(struct brw_context *brw,
-		     GLenum target,
+                     GLenum target,
-		     mesa_format format,
+                     mesa_format format,
-		     GLuint first_level,
+                     GLuint first_level,
-		     GLuint last_level,
+                     GLuint last_level,
-		     GLuint width0,
+                     GLuint width0,
-		     GLuint height0,
+                     GLuint height0,
-		     GLuint depth0,
+                     GLuint depth0,
-		     bool expect_accelerated_upload,
+                     bool expect_accelerated_upload,
                      GLuint num_samples,
                      enum intel_miptree_tiling_mode requested_tiling,
                      bool force_all_slices_at_each_lod)
@@ -653,15 +654,12 @@ intel_miptree_create(struct brw_context *brw,
 				      first_level, last_level, width0,
 				      height0, depth0,
                                     false, num_samples,
+                                    requested_tiling,
                                     force_all_slices_at_each_lod,
                                     false /*disable_aux_buffers*/);
-   /*
+
-    * pitch == 0 || height == 0  indicates the null texture
+   if (!mt)
-    */
-   if (!mt || !mt->total_width || !mt->total_height) {
-      intel_miptree_release(&mt);
       return NULL;
-   }
 
    total_width = mt->total_width;
    total_height = mt->total_height;
@@ -672,16 +670,11 @@ intel_miptree_create(struct brw_context *brw,
       total_height = ALIGN(total_height, 64);
    }
 
-   uint32_t tiling = intel_miptree_choose_tiling(brw, format, width0,
-                                                 num_samples, requested_tiling,
-                                                 mt);
    bool y_or_x = false;
 
-   if (tiling == (I915_TILING_Y | I915_TILING_X)) {
+   if (mt->tiling == (I915_TILING_Y | I915_TILING_X)) {
       y_or_x = true;
       mt->tiling = I915_TILING_Y;
-   } else {
-      mt->tiling = tiling;
    }
 
    unsigned long pitch;
@@ -767,10 +760,18 @@ intel_miptree_create_for_bo(struct brw_context *brw,
 
    target = depth > 1 ? GL_TEXTURE_2D_ARRAY : GL_TEXTURE_2D;
 
+   /* 'requested' parameter of intel_miptree_create_layout() is relevant
+    * only for non bo miptree. Tiling for bo is already computed above.
+    * So, the tiling requested (INTEL_MIPTREE_TILING_ANY) below is
+    * just a place holder and will not make any change to the miptree
+    * tiling format.
+    */
    mt = intel_miptree_create_layout(brw, target, format,
                                     0, 0,
                                     width, height, depth,
-                                    true, 0, false,
+                                    true, 0,
+                                    INTEL_MIPTREE_TILING_ANY,
+                                    false,
                                     disable_aux_buffers);
    if (!mt)
       return NULL;

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

@@ -753,7 +753,11 @@ brw_miptree_get_vertical_slice_pitch(const struct brw_context *brw,
                                      const struct intel_mipmap_tree *mt,
                                      unsigned level);
 
-void brw_miptree_layout(struct brw_context *brw, struct intel_mipmap_tree *mt);
+void
+brw_miptree_layout(struct brw_context *brw,
+                   bool for_bo,
+                   enum intel_miptree_tiling_mode requested,
+                   struct intel_mipmap_tree *mt);
 
 void *intel_miptree_map_raw(struct brw_context *brw,
                             struct intel_mipmap_tree *mt);
@@ -780,6 +784,14 @@ intel_miptree_unmap(struct brw_context *brw,
 		    unsigned int level,
 		    unsigned int slice);
 
+uint32_t
+intel_miptree_choose_tiling(struct brw_context *brw,
+                            mesa_format format,
+                            uint32_t width0,
+                            uint32_t num_samples,
+                            enum intel_miptree_tiling_mode requested,
+                            struct intel_mipmap_tree *mt);
+
 void
 intel_hiz_exec(struct brw_context *brw, struct intel_mipmap_tree *mt,
 	       unsigned int level, unsigned int layer, enum gen6_hiz_op op);