i965: Add SetTextureStorageForMemoryObject() driver hookext_memory_object

1 files changed, 47 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_memory_obj.c b/src/mesa/drivers/dri/i965/brw_memory_obj.c
index bd1917ebe4..4bb035ace0 100644
--- a/src/mesa/drivers/dri/i965/brw_memory_obj.c
+++ b/src/mesa/drivers/dri/i965/brw_memory_obj.c
@@ -30,6 +30,8 @@
 #include "brw_context.h"
 #include "brw_defines.h"
 #include "brw_memory_obj.h"
+#include "intel_fbo.h" /* for intel_quantize_num_samples() */
+#include "intel_mipmap_tree.h"
 
 static struct gl_memory_object *
 brw_memory_obj_alloc(struct gl_context *ctx, GLuint name)
@@ -73,9 +75,54 @@ brw_import_memory_obj_fd(struct gl_context *ctx,
    close(fd);
 }
 
+static GLboolean
+brw_tex_storage_for_mem_obj(struct gl_context *ctx,
+                            struct gl_texture_object *tex_obj,
+                            struct gl_memory_object *mem_obj,
+                            GLsizei levels, GLsizei width,
+                            GLsizei height, GLsizei depth,
+                            GLuint64 offset)
+{
+   struct brw_context *brw = brw_context(ctx);
+   struct gl_texture_image *first_image = tex_obj->Image[0][0];
+   const unsigned num_samples = intel_quantize_num_samples(
+                                   brw->screen, first_image->NumSamples);
+   const struct intel_memory_object *intel_mem_obj =
+      (struct intel_memory_object *)mem_obj;
+   struct intel_texture_object *intel_tex_obj =
+      (struct intel_texture_object *)tex_obj;
+
+   if (intel_mem_obj->bo == NULL)
+      return FALSE;
+
+   intel_get_image_dims(first_image, &width, &height, &depth);
+
+   const enum isl_tiling tiling =
+      isl_tiling_from_i915_tiling(intel_mem_obj->bo->tiling_mode);
+   intel_tex_obj->mt = make_surface(brw, tex_obj->Target,
+                                    first_image->TexFormat, 0, levels - 1,
+                                    width, height, depth,
+                                    MAX2(num_samples, 1), 1 << tiling,
+                                    ISL_SURF_USAGE_TEXTURE_BIT, BO_ALLOC_BUSY,
+                                    0, intel_mem_obj->bo);
+   if (intel_tex_obj->mt == NULL)
+      return FALSE;
+
+   brw_bo_reference(intel_mem_obj->bo);
+
+   /* The miptree is in a validated state, so no need to check later. */
+   intel_tex_obj->needs_validate = false;
+   intel_tex_obj->validated_first_level = 0;
+   intel_tex_obj->validated_last_level = levels - 1;
+   intel_tex_obj->_Format = intel_tex_obj->mt->format;
+
+   return TRUE;
+}
+
 void brw_init_memory_obj_functions(struct dd_function_table *functions)
 {
    functions->NewMemoryObject = brw_memory_obj_alloc;
    functions->DeleteMemoryObject = brw_memory_obj_free;
    functions->ImportMemoryObjectFd = brw_import_memory_obj_fd;
+   functions->SetTextureStorageForMemoryObject = brw_tex_storage_for_mem_obj;
 }