1 files changed, 245 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/intel_tex_validate.c b/src/mesa/drivers/dri/i965/intel_tex_validate.c
new file mode 100644
index 0000000000..5023aae1b8
--- /dev/null
+++ b/src/mesa/drivers/dri/i965/intel_tex_validate.c
@@ -0,0 +1,245 @@
+/**************************************************************************
+ * 
+ * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ **************************************************************************/
+
+#include "mtypes.h"
+#include "macros.h"
+
+#include "intel_context.h"
+#include "intel_mipmap_tree.h"
+#include "intel_tex.h"
+#include "bufmgr.h"
+
+/**
+ * Compute which mipmap levels that really need to be sent to the hardware.
+ * This depends on the base image size, GL_TEXTURE_MIN_LOD,
+ * GL_TEXTURE_MAX_LOD, GL_TEXTURE_BASE_LEVEL, and GL_TEXTURE_MAX_LEVEL.
+ */
+static void intel_calculate_first_last_level( struct intel_texture_object *intelObj )
+{
+   struct gl_texture_object *tObj = &intelObj->base;
+   const struct gl_texture_image * const baseImage =
+       tObj->Image[0][tObj->BaseLevel];
+
+   /* These must be signed values.  MinLod and MaxLod can be negative numbers,
+    * and having firstLevel and lastLevel as signed prevents the need for
+    * extra sign checks.
+    */
+   int   firstLevel;
+   int   lastLevel;
+
+   /* Yes, this looks overly complicated, but it's all needed.
+    */
+   switch (tObj->Target) {
+   case GL_TEXTURE_1D:
+   case GL_TEXTURE_2D:
+   case GL_TEXTURE_3D:
+   case GL_TEXTURE_CUBE_MAP:
+      if (tObj->MinFilter == GL_NEAREST || tObj->MinFilter == GL_LINEAR) {
+         /* GL_NEAREST and GL_LINEAR only care about GL_TEXTURE_BASE_LEVEL.
+          */
+         firstLevel = lastLevel = tObj->BaseLevel;
+      }
+      else {
+	 /* Currently not taking min/max lod into account here, those
+	  * values are programmed as sampler state elsewhere and we
+	  * upload the same mipmap levels regardless.  Not sure if
+	  * this makes sense as it means it isn't possible for the app
+	  * to use min/max lod to reduce texture memory pressure:
+	  */
+	 firstLevel = tObj->BaseLevel;
+	 lastLevel = MIN2(tObj->BaseLevel + baseImage->MaxLog2, 
+			  tObj->MaxLevel);
+	 lastLevel = MAX2(firstLevel, lastLevel); /* need at least one level */
+      }
+      break;
+   case GL_TEXTURE_RECTANGLE_NV:
+   case GL_TEXTURE_4D_SGIS:
+      firstLevel = lastLevel = 0;
+      break;
+   default:
+      return;
+   }
+
+   /* save these values */
+   intelObj->firstLevel = firstLevel;
+   intelObj->lastLevel = lastLevel;
+}
+
+static void copy_image_data_to_tree( struct intel_context *intel,
+				     struct intel_texture_object *intelObj,
+				     struct gl_texture_image *texImage,
+				     GLuint face,
+				     GLuint level)
+{
+   intel_miptree_image_data(intel,
+			    intelObj->mt,
+			    face,
+			    level,
+			    texImage->Data,
+			    texImage->RowStride,
+			    (texImage->RowStride * 
+			     texImage->Height * 
+			     texImage->TexFormat->TexelBytes));
+}
+
+static void intel_texture_invalidate( struct intel_texture_object *intelObj )
+{
+   GLint nr_faces, face;
+   intelObj->dirty = ~0;
+
+   nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
+   for (face = 0; face < nr_faces; face++) 
+      intelObj->dirty_images[face] = ~0;
+}
+
+static void intel_texture_invalidate_cb( struct intel_context *intel,
+					 void *ptr )
+{
+   intel_texture_invalidate( (struct intel_texture_object *) ptr );
+}
+
+
+/*  
+ */
+GLuint intel_finalize_mipmap_tree( struct intel_context *intel,
+				   struct gl_texture_object *tObj )
+{
+   struct intel_texture_object *intelObj = intel_texture_object(tObj);
+
+   GLuint face, i;
+   GLuint nr_faces = 0;
+   struct gl_texture_image *firstImage;
+
+   /* We know/require this is true by now: 
+    */
+   assert(intelObj->base.Complete);
+
+   /* What levels must the tree include at a minimum?
+    */
+   if (intelObj->dirty) {
+      intel_calculate_first_last_level( intelObj );
+/*       intel_miptree_destroy(intel, intelObj->mt); */
+/*       intelObj->mt = NULL; */
+   }
+
+   firstImage = intelObj->base.Image[0][intelObj->firstLevel];
+
+   /* Fallback case:
+    */
+   if (firstImage->Border) {
+      if (intelObj->mt) {
+	 intel_miptree_destroy(intel, intelObj->mt);
+	 intelObj->mt = NULL;
+	 /* Set all images dirty:
+	  */
+	 intel_texture_invalidate(intelObj);
+      }
+      return GL_FALSE;
+   }
+
+
+
+   /* Check tree can hold all active levels.  Check tree matches
+    * target, imageFormat, etc.
+    */
+   if (intelObj->mt &&
+       (intelObj->mt->first_level != intelObj->firstLevel ||
+	intelObj->mt->last_level != intelObj->lastLevel ||
+	intelObj->mt->internal_format != firstImage->InternalFormat ||
+	intelObj->mt->width0 != firstImage->Width ||
+	intelObj->mt->height0 != firstImage->Height ||
+	intelObj->mt->depth0 != firstImage->Depth)) 
+   {
+      intel_miptree_destroy(intel, intelObj->mt);
+      intelObj->mt = NULL;
+      
+      /* Set all images dirty:
+       */
+      intel_texture_invalidate(intelObj);
+   }
+      
+
+   /* May need to create a new tree:
+    */
+   if (!intelObj->mt) {
+      intelObj->mt = intel_miptree_create(intel,
+					  intelObj->base.Target,
+					  firstImage->InternalFormat,
+					  intelObj->firstLevel,
+					  intelObj->lastLevel,
+					  firstImage->Width,
+					  firstImage->Height,
+					  firstImage->Depth,
+					  firstImage->TexFormat->TexelBytes,
+					  firstImage->IsCompressed);
+
+      /* Tell the buffer manager that we will manage the backing
+       * store, but we still want it to do fencing for us.
+       */
+      bmBufferSetInvalidateCB(intel, 
+			      intelObj->mt->region->buffer,
+			      intel_texture_invalidate_cb,
+			      intelObj,
+			      GL_FALSE);
+   }
+
+   /* Pull in any images not in the object's tree:
+    */
+   if (intelObj->dirty) {
+      nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
+      for (face = 0; face < nr_faces; face++) {
+	 if (intelObj->dirty_images[face]) {
+	    for (i = intelObj->firstLevel; i <= intelObj->lastLevel; i++) {
+	       struct gl_texture_image *texImage = intelObj->base.Image[face][i];
+
+	       /* Need to import images in main memory or held in other trees.
+		*/
+	       if (intelObj->dirty_images[face] & (1<<i) &&
+		   texImage) {
+
+		  if (INTEL_DEBUG & DEBUG_TEXTURE)
+		     _mesa_printf("copy data from image %d (%p) into object miptree\n",
+				  i,
+				  texImage->Data);
+
+		  copy_image_data_to_tree(intel,
+					  intelObj,
+					  texImage,
+					  face,
+					  i);
+
+	       }
+	    }
+	    intelObj->dirty_images[face] = 0;
+	 }
+      }
+
+      intelObj->dirty = 0;
+   }
+
+   return GL_TRUE;
+}