i965: Move GL_APPLE_object_purgeable functionality into a new file.

GL_APPLE_object_purgeable creates a mechanism for marking OpenGL objects
as "purgeable" so they can be thrown away when system resources become
scarce.  It specifically applies to buffer objects, textures, and
renderbuffers.

The intel_buffer_objects.c file provides core functionality for GL
buffer objects, such as MapBufferRange and CopyBufferSubData.  Having
texture and renderbuffer functionality in that file is a bit strange.

The 2010 copyright on the new file is because Chris Wilson first added
this code in January 2010 (commit 755915fa).

v2: Actually remember to call the new dd table setup function.

Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>
Reviewed-by: Paul Berry <[email protected]>

5 files changed, 178 insertions, 136 deletions

diff --git a/src/mesa/drivers/dri/i965/Makefile.sources b/src/mesa/drivers/dri/i965/Makefile.sources
index ac8487b7b43..c92573f1e3a 100644
--- a/src/mesa/drivers/dri/i965/Makefile.sources
+++ b/src/mesa/drivers/dri/i965/Makefile.sources
@@ -65,6 +65,7 @@ i965_FILES = \
 	brw_interpolation_map.c \
 	brw_lower_texture_gradients.cpp \
 	brw_misc_state.c \
+	brw_object_purgeable.c \
 	brw_program.c \
 	brw_primitive_restart.c \
 	brw_queryobj.c \
diff --git a/src/mesa/drivers/dri/i965/brw_context.h b/src/mesa/drivers/dri/i965/brw_context.h
index 74e38f1b43d..4067645a6d3 100644
--- a/src/mesa/drivers/dri/i965/brw_context.h
+++ b/src/mesa/drivers/dri/i965/brw_context.h
@@ -1305,6 +1305,9 @@ void brw_get_depthstencil_tile_masks(struct intel_mipmap_tree *depth_mt,
 void brw_workaround_depthstencil_alignment(struct brw_context *brw,
                                            GLbitfield clear_mask);
 
+/* brw_object_purgeable.c */
+void brw_init_object_purgeable_functions(struct dd_function_table *functions);
+
 /*======================================================================
  * brw_queryobj.c
  */
diff --git a/src/mesa/drivers/dri/i965/brw_object_purgeable.c b/src/mesa/drivers/dri/i965/brw_object_purgeable.c
new file mode 100644
index 00000000000..46304167b22
--- /dev/null
+++ b/src/mesa/drivers/dri/i965/brw_object_purgeable.c
@@ -0,0 +1,173 @@
+/*
+ * Copyright © 2010 Intel Corporation
+ *
+ * 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, sublicense,
+ * 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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ */
+
+/**
+ * @file brw_object_purgeable.c
+ *
+ * The driver implementation of the GL_APPLE_object_purgeable extension.
+ */
+
+#include "main/imports.h"
+#include "main/mtypes.h"
+#include "main/macros.h"
+#include "main/bufferobj.h"
+
+#include "brw_context.h"
+#include "intel_buffer_objects.h"
+#include "intel_fbo.h"
+#include "intel_mipmap_tree.h"
+
+static GLenum
+intel_buffer_purgeable(drm_intel_bo *buffer)
+{
+   int retained = 0;
+
+   if (buffer != NULL)
+      retained = drm_intel_bo_madvise(buffer, I915_MADV_DONTNEED);
+
+   return retained ? GL_VOLATILE_APPLE : GL_RELEASED_APPLE;
+}
+
+static GLenum
+intel_buffer_object_purgeable(struct gl_context * ctx,
+                              struct gl_buffer_object *obj,
+                              GLenum option)
+{
+   struct intel_buffer_object *intel_obj = intel_buffer_object(obj);
+
+   if (intel_obj->buffer != NULL)
+      return intel_buffer_purgeable(intel_obj->buffer);
+
+   if (option == GL_RELEASED_APPLE) {
+      return GL_RELEASED_APPLE;
+   } else {
+      /* XXX Create the buffer and madvise(MADV_DONTNEED)? */
+      struct brw_context *brw = brw_context(ctx);
+      drm_intel_bo *bo = intel_bufferobj_buffer(brw, intel_obj, INTEL_READ);
+
+      return intel_buffer_purgeable(bo);
+   }
+}
+
+static GLenum
+intel_texture_object_purgeable(struct gl_context * ctx,
+                               struct gl_texture_object *obj,
+                               GLenum option)
+{
+   struct intel_texture_object *intel;
+
+   (void) ctx;
+   (void) option;
+
+   intel = intel_texture_object(obj);
+   if (intel->mt == NULL || intel->mt->region == NULL)
+      return GL_RELEASED_APPLE;
+
+   return intel_buffer_purgeable(intel->mt->region->bo);
+}
+
+static GLenum
+intel_render_object_purgeable(struct gl_context * ctx,
+                              struct gl_renderbuffer *obj,
+                              GLenum option)
+{
+   struct intel_renderbuffer *intel;
+
+   (void) ctx;
+   (void) option;
+
+   intel = intel_renderbuffer(obj);
+   if (intel->mt == NULL)
+      return GL_RELEASED_APPLE;
+
+   return intel_buffer_purgeable(intel->mt->region->bo);
+}
+
+static GLenum
+intel_buffer_unpurgeable(drm_intel_bo *buffer)
+{
+   int retained;
+
+   retained = 0;
+   if (buffer != NULL)
+      retained = drm_intel_bo_madvise(buffer, I915_MADV_WILLNEED);
+
+   return retained ? GL_RETAINED_APPLE : GL_UNDEFINED_APPLE;
+}
+
+static GLenum
+intel_buffer_object_unpurgeable(struct gl_context * ctx,
+                                struct gl_buffer_object *obj,
+                                GLenum option)
+{
+   (void) ctx;
+   (void) option;
+
+   return intel_buffer_unpurgeable(intel_buffer_object(obj)->buffer);
+}
+
+static GLenum
+intel_texture_object_unpurgeable(struct gl_context * ctx,
+                                 struct gl_texture_object *obj,
+                                 GLenum option)
+{
+   struct intel_texture_object *intel;
+
+   (void) ctx;
+   (void) option;
+
+   intel = intel_texture_object(obj);
+   if (intel->mt == NULL || intel->mt->region == NULL)
+      return GL_UNDEFINED_APPLE;
+
+   return intel_buffer_unpurgeable(intel->mt->region->bo);
+}
+
+static GLenum
+intel_render_object_unpurgeable(struct gl_context * ctx,
+                                struct gl_renderbuffer *obj,
+                                GLenum option)
+{
+   struct intel_renderbuffer *intel;
+
+   (void) ctx;
+   (void) option;
+
+   intel = intel_renderbuffer(obj);
+   if (intel->mt == NULL)
+      return GL_UNDEFINED_APPLE;
+
+   return intel_buffer_unpurgeable(intel->mt->region->bo);
+}
+
+void
+brw_init_object_purgeable_functions(struct dd_function_table *functions)
+{
+   functions->BufferObjectPurgeable = intel_buffer_object_purgeable;
+   functions->TextureObjectPurgeable = intel_texture_object_purgeable;
+   functions->RenderObjectPurgeable = intel_render_object_purgeable;
+
+   functions->BufferObjectUnpurgeable = intel_buffer_object_unpurgeable;
+   functions->TextureObjectUnpurgeable = intel_texture_object_unpurgeable;
+   functions->RenderObjectUnpurgeable = intel_render_object_unpurgeable;
+}
diff --git a/src/mesa/drivers/dri/i965/intel_buffer_objects.c b/src/mesa/drivers/dri/i965/intel_buffer_objects.c
index 0b4782b894d..740913bb609 100644
--- a/src/mesa/drivers/dri/i965/intel_buffer_objects.c
+++ b/src/mesa/drivers/dri/i965/intel_buffer_objects.c
@@ -35,11 +35,6 @@
 #include "intel_blit.h"
 #include "intel_buffer_objects.h"
 #include "intel_batchbuffer.h"
-#include "intel_fbo.h"
-#include "intel_mipmap_tree.h"
-#include "intel_regions.h"
-
-#include "brw_context.h"
 
 static GLboolean
 intel_bufferobj_unmap(struct gl_context * ctx, struct gl_buffer_object *obj);
@@ -590,129 +585,6 @@ intel_bufferobj_copy_subdata(struct gl_context *ctx,
    intel_batchbuffer_emit_mi_flush(brw);
 }
 
-static GLenum
-intel_buffer_purgeable(drm_intel_bo *buffer)
-{
-   int retained = 0;
-
-   if (buffer != NULL)
-      retained = drm_intel_bo_madvise (buffer, I915_MADV_DONTNEED);
-
-   return retained ? GL_VOLATILE_APPLE : GL_RELEASED_APPLE;
-}
-
-static GLenum
-intel_buffer_object_purgeable(struct gl_context * ctx,
-                              struct gl_buffer_object *obj,
-                              GLenum option)
-{
-   struct intel_buffer_object *intel_obj = intel_buffer_object (obj);
-
-   if (intel_obj->buffer != NULL)
-      return intel_buffer_purgeable(intel_obj->buffer);
-
-   if (option == GL_RELEASED_APPLE) {
-      return GL_RELEASED_APPLE;
-   } else {
-      /* XXX Create the buffer and madvise(MADV_DONTNEED)? */
-      struct brw_context *brw = brw_context(ctx);
-      drm_intel_bo *bo = intel_bufferobj_buffer(brw, intel_obj, INTEL_READ);
-
-      return intel_buffer_purgeable(bo);
-   }
-}
-
-static GLenum
-intel_texture_object_purgeable(struct gl_context * ctx,
-                               struct gl_texture_object *obj,
-                               GLenum option)
-{
-   struct intel_texture_object *intel;
-
-   (void) ctx;
-   (void) option;
-
-   intel = intel_texture_object(obj);
-   if (intel->mt == NULL || intel->mt->region == NULL)
-      return GL_RELEASED_APPLE;
-
-   return intel_buffer_purgeable(intel->mt->region->bo);
-}
-
-static GLenum
-intel_render_object_purgeable(struct gl_context * ctx,
-                              struct gl_renderbuffer *obj,
-                              GLenum option)
-{
-   struct intel_renderbuffer *intel;
-
-   (void) ctx;
-   (void) option;
-
-   intel = intel_renderbuffer(obj);
-   if (intel->mt == NULL)
-      return GL_RELEASED_APPLE;
-
-   return intel_buffer_purgeable(intel->mt->region->bo);
-}
-
-static GLenum
-intel_buffer_unpurgeable(drm_intel_bo *buffer)
-{
-   int retained;
-
-   retained = 0;
-   if (buffer != NULL)
-      retained = drm_intel_bo_madvise (buffer, I915_MADV_WILLNEED);
-
-   return retained ? GL_RETAINED_APPLE : GL_UNDEFINED_APPLE;
-}
-
-static GLenum
-intel_buffer_object_unpurgeable(struct gl_context * ctx,
-                                struct gl_buffer_object *obj,
-                                GLenum option)
-{
-   (void) ctx;
-   (void) option;
-
-   return intel_buffer_unpurgeable(intel_buffer_object (obj)->buffer);
-}
-
-static GLenum
-intel_texture_object_unpurgeable(struct gl_context * ctx,
-                                 struct gl_texture_object *obj,
-                                 GLenum option)
-{
-   struct intel_texture_object *intel;
-
-   (void) ctx;
-   (void) option;
-
-   intel = intel_texture_object(obj);
-   if (intel->mt == NULL || intel->mt->region == NULL)
-      return GL_UNDEFINED_APPLE;
-
-   return intel_buffer_unpurgeable(intel->mt->region->bo);
-}
-
-static GLenum
-intel_render_object_unpurgeable(struct gl_context * ctx,
-                                struct gl_renderbuffer *obj,
-                                GLenum option)
-{
-   struct intel_renderbuffer *intel;
-
-   (void) ctx;
-   (void) option;
-
-   intel = intel_renderbuffer(obj);
-   if (intel->mt == NULL)
-      return GL_UNDEFINED_APPLE;
-
-   return intel_buffer_unpurgeable(intel->mt->region->bo);
-}
-
 void
 intelInitBufferObjectFuncs(struct dd_function_table *functions)
 {
@@ -725,12 +597,4 @@ intelInitBufferObjectFuncs(struct dd_function_table *functions)
    functions->FlushMappedBufferRange = intel_bufferobj_flush_mapped_range;
    functions->UnmapBuffer = intel_bufferobj_unmap;
    functions->CopyBufferSubData = intel_bufferobj_copy_subdata;
-
-   functions->BufferObjectPurgeable = intel_buffer_object_purgeable;
-   functions->TextureObjectPurgeable = intel_texture_object_purgeable;
-   functions->RenderObjectPurgeable = intel_render_object_purgeable;
-
-   functions->BufferObjectUnpurgeable = intel_buffer_object_unpurgeable;
-   functions->TextureObjectUnpurgeable = intel_texture_object_unpurgeable;
-   functions->RenderObjectUnpurgeable = intel_render_object_unpurgeable;
 }
diff --git a/src/mesa/drivers/dri/i965/intel_context.c b/src/mesa/drivers/dri/i965/intel_context.c
index 840c1a5bf1b..2e384758054 100644
--- a/src/mesa/drivers/dri/i965/intel_context.c
+++ b/src/mesa/drivers/dri/i965/intel_context.c
@@ -400,6 +400,7 @@ intelInitDriverFunctions(struct dd_function_table *functions)
    intelInitPixelFuncs(functions);
    intelInitBufferObjectFuncs(functions);
    intel_init_syncobj_functions(functions);
+   brw_init_object_purgeable_functions(functions);
 }
 
 static bool