commit 8a22081e499731b0f47292e3bf4d54a080ac6be9
author Manoj Kumar AVM <manojavm@codeaurora.org> Thu Oct 10 11:46:06 2013 -0700
committer Manoj Kumar AVM <manojavm@codeaurora.org> Tue Jan 14 13:32:31 2014 -0800
tree d8ea833441162c48e1c3c178b5c5e4304c758199
parent 8dad692bcb6e2e6b2ad88e4c16b0f7ec0f93b96e

hwc: Add support for Macro Tile feature

Macro tile is enabled only if all the conditions are met:
  1. GPU hardware should support Macro Tiling.
  2. MDSS hardware should support Macro Tiling.
  3. USAGE flags shouldnt contain GRALLOC_USAGE_SW_READ_OFTEN and
     GRALLOC_USAGE_SW_WRITE_OFTEN.
  4. RGB 16bit and 32bit formats.
  5. persist.hwc.macro_tile_enable flag should be enabled.

PRIV_FLAGS_TILE_RENDERED flag is added to indicate whether the layer
is rendered/composited in Macro Tiling or Linear format.

Change-Id: Ie3139839c84d76c5d1a2300f33910a09eb7336f4

libgralloc/gr.h

diff --git a/libgralloc/gr.h b/libgralloc/gr.h
index 1949f45..8c68e16 100644
--- a/libgralloc/gr.h
+++ b/libgralloc/gr.h
@@ -51,9 +51,20 @@
 
 int mapFrameBufferLocked(struct private_module_t* module);
 int terminateBuffer(gralloc_module_t const* module, private_handle_t* hnd);
+size_t getBufferSizeAndDimensions(int width, int height, int format, int usage,
+                                  int& alignedw, int &alignedh);
 size_t getBufferSizeAndDimensions(int width, int height, int format,
                                   int& alignedw, int &alignedh);
 
+
+// Attributes include aligned width, aligned height, tileEnabled and size of the buffer
+void getBufferAttributes(int width, int height, int format, int usage,
+                           int& alignedw, int &alignedh,
+                           int& tileEnabled, size_t &size);
+
+
+bool isMacroTileEnabled(int format, int usage);
+
 int decideBufferHandlingMechanism(int format, const char *compositionUsed,
                                   int hasBlitEngine, int *needConversion,
                                   int *useBufferDirectly);
@@ -95,7 +106,16 @@
      * @return aligned width, aligned height
      */
     void getAlignedWidthAndHeight(int width, int height, int format,
-                                  int& alignedw, int &alignedh);
+                            int tileEnabled, int& alignedw, int &alignedh);
+
+    /*
+     * Function to return whether GPU support MacroTile feature
+     *
+     * @return >0 : supported
+     *          0 : not supported
+     */
+    int isMacroTilingSupportedByGPU();
+
     private:
         // Pointer to the padding library.
         void *libadreno_utils;
@@ -114,6 +134,8 @@
                                                 int padding_threshold,
                                                 int *aligned_w,
                                                 int *aligned_h);
+        // link to the surface padding library.
+        int (*LINK_adreno_isMacroTilingSupportedByGpu) (void);
 
 };
 #endif /* GR_H_ */