commit 0946393dfd115f5d74abfc8ad4b8ef7b4d363503
author Jamie Madill <jmadill@chromium.org> Wed Apr 04 05:26:59 2018 -0400
committer Commit Bot <commit-bot@chromium.org> Wed Apr 04 15:25:51 2018 +0000
tree 2d9eae9b057903f0cf2d6c55b6fe0157180022ce
parent 59c5b897ec7068e13ba876b791933b5a64ec9de9

Move Buffer Subject/Observer to front end.

This makes BufferImpl into an Observer Subject. It also refactors
the Vertex Array updates for the D3D11 backend use more of a dirty
bit coding style.

This change makes it so Buffer contents changes trigger front-end
dirty bits from the back-end, which may be undesirable.

Bug: angleproject:2389
Change-Id: Iac8ce1171284a86851c18cd1373ddf24fcefe40b
Reviewed-on: https://chromium-review.googlesource.com/979812
Commit-Queue: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

src/libANGLE/Context.cpp

diff --git a/src/libANGLE/Context.cpp b/src/libANGLE/Context.cpp
index 9140870..e276d7c 100644
--- a/src/libANGLE/Context.cpp
+++ b/src/libANGLE/Context.cpp
@@ -129,13 +129,14 @@
     }
 }
 
-void MarkTransformFeedbackBufferUsage(gl::TransformFeedback *transformFeedback,
+void MarkTransformFeedbackBufferUsage(const gl::Context *context,
+                                      gl::TransformFeedback *transformFeedback,
                                       GLsizei count,
                                       GLsizei instanceCount)
 {
     if (transformFeedback && transformFeedback->isActive() && !transformFeedback->isPaused())
     {
-        transformFeedback->onVerticesDrawn(count, instanceCount);
+        transformFeedback->onVerticesDrawn(context, count, instanceCount);
     }
 }
 
@@ -1804,7 +1805,7 @@
 
     ANGLE_CONTEXT_TRY(prepareForDraw());
     ANGLE_CONTEXT_TRY(mImplementation->drawArrays(this, mode, first, count));
-    MarkTransformFeedbackBufferUsage(mGLState.getCurrentTransformFeedback(), count, 1);
+    MarkTransformFeedbackBufferUsage(this, mGLState.getCurrentTransformFeedback(), count, 1);
 }
 
 void Context::drawArraysInstanced(GLenum mode, GLint first, GLsizei count, GLsizei instanceCount)
@@ -1818,7 +1819,8 @@
     ANGLE_CONTEXT_TRY(prepareForDraw());
     ANGLE_CONTEXT_TRY(
         mImplementation->drawArraysInstanced(this, mode, first, count, instanceCount));
-    MarkTransformFeedbackBufferUsage(mGLState.getCurrentTransformFeedback(), count, instanceCount);
+    MarkTransformFeedbackBufferUsage(this, mGLState.getCurrentTransformFeedback(), count,
+                                     instanceCount);
 }
 
 void Context::drawElements(GLenum mode, GLsizei count, GLenum type, const void *indices)