Correctly support pre-multiplied alpha, optimizations, more stuff.

Add support for the following drawing functions:
- drawBitmap(int[]...)
- drawPaint()

Optimizes shader state changes by enabling/disabling attribute arrays
only when needed.

Adds quick rejects when drawing trivial shapes to avoid unnecessary
OpenGL operations.

Change-Id: Ic2c6c2ed1523d08a63a8c95601a1ec40b6c7fbc9

1 files changed, 25 insertions, 3 deletions

diff --git a/libs/hwui/Program.h b/libs/hwui/Program.h
index 652befe1..d90bcaf 100644
--- a/libs/hwui/Program.h
+++ b/libs/hwui/Program.h
@@ -39,18 +39,18 @@ public:
      * shaders sources.
      */
     Program(const char* vertex, const char* fragment);
-    ~Program();
+    virtual ~Program();
 
     /**
      * Binds this program to the GL context.
      */
-    void use();
+    virtual void use();
 
     /**
      * Marks this program as unused. This will not unbind
      * the program from the GL context.
      */
-    void remove();
+    virtual void remove();
 
     /**
      * Indicates whether this program is currently in use with
@@ -129,6 +129,17 @@ public:
              const mat4& transformMatrix);
 
     /**
+     * Binds this program to the GL context.
+     */
+    virtual void use();
+
+    /**
+     * Marks this program as unused. This will not unbind
+     * the program from the GL context.
+     */
+    virtual void remove();
+
+    /**
      * Name of the position attribute.
      */
     int position;
@@ -157,6 +168,17 @@ public:
     DrawTextureProgram();
 
     /**
+     * Binds this program to the GL context.
+     */
+    virtual void use();
+
+    /**
+     * Marks this program as unused. This will not unbind
+     * the program from the GL context.
+     */
+    virtual void remove();
+
+    /**
      * Name of the texture sampler uniform.
      */
     int sampler;