[Mesa-dev] [PATCH V2 02/22] i965: Choose tiling in brw_miptree_layout() function

Anuj Phogat anuj.phogat at gmail.com
Fri Apr 17 16:51:23 PDT 2015


This refactoring is required by later patches in this series.

Signed-off-by: Anuj Phogat <anuj.phogat at gmail.com>
---
 src/mesa/drivers/dri/i965/brw_tex_layout.c    | 19 +++++++++++++++-
 src/mesa/drivers/dri/i965/intel_mipmap_tree.c | 31 ++++++++++++++-------------
 src/mesa/drivers/dri/i965/intel_mipmap_tree.h | 19 ++++++++++++++--
 3 files changed, 51 insertions(+), 18 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_tex_layout.c b/src/mesa/drivers/dri/i965/brw_tex_layout.c
index 7a1e09d..b8408d3 100644
--- a/src/mesa/drivers/dri/i965/brw_tex_layout.c
+++ b/src/mesa/drivers/dri/i965/brw_tex_layout.c
@@ -378,7 +378,13 @@ 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,
+                   mesa_format format,
+                   uint32_t width0,
+                   uint32_t num_samples,
+                   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;
@@ -461,5 +467,16 @@ brw_miptree_layout(struct brw_context *brw, struct intel_mipmap_tree *mt)
    }
    DBG("%s: %dx%dx%d\n", __FUNCTION__,
        mt->total_width, mt->total_height, mt->cpp);
+
+    /* pitch == 0 || height == 0  indicates the null texture */
+   if (!mt || !mt->total_width || !mt->total_height) {
+      intel_miptree_release(&mt);
+      return;
+   }
+
+   if (!for_bo)
+      mt->tiling = intel_miptree_choose_tiling(brw, format, width0,
+                                               num_samples,
+                                               requested, mt);
 }
 
diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
index eb226d5..7a64282 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.c
@@ -232,6 +232,7 @@ 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)
 {
    struct intel_mipmap_tree *mt = calloc(sizeof(*mt), 1);
@@ -432,7 +433,7 @@ 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, format, width0, num_samples, for_bo, requested, mt);
 
    return mt;
 }
@@ -440,7 +441,7 @@ 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,
@@ -609,14 +610,11 @@ 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);
-   /*
-    * pitch == 0 || height == 0  indicates the null texture
-    */
-   if (!mt || !mt->total_width || !mt->total_height) {
-      intel_miptree_release(&mt);
+
+   if (!mt)
       return NULL;
-   }
 
    total_width = mt->total_width;
    total_height = mt->total_height;
@@ -627,16 +625,11 @@ 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;
@@ -721,10 +714,18 @@ 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);
    if (!mt) {
       free(mt);
       return mt;
diff --git a/src/mesa/drivers/dri/i965/intel_mipmap_tree.h b/src/mesa/drivers/dri/i965/intel_mipmap_tree.h
index 41b6036..f03715b 100644
--- a/src/mesa/drivers/dri/i965/intel_mipmap_tree.h
+++ b/src/mesa/drivers/dri/i965/intel_mipmap_tree.h
@@ -540,6 +540,7 @@ 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);
 
 struct intel_mipmap_tree *
@@ -737,8 +738,14 @@ void
 intel_miptree_updownsample(struct brw_context *brw,
                            struct intel_mipmap_tree *src,
                            struct intel_mipmap_tree *dst);
-
-void brw_miptree_layout(struct brw_context *brw, struct intel_mipmap_tree *mt);
+void
+brw_miptree_layout(struct brw_context *brw,
+                   mesa_format format,
+                   uint32_t width0,
+                   uint32_t num_samples,
+                   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);
@@ -765,6 +772,14 @@ 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);
-- 
2.3.4



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