Vulkan: Process dirty framebuffers first

The currently bound framebuffer affects some dirty bits. This means that processing those dirty bits temporarily use data from a framebuffer that's about to be changed. At best, that creates unnecessary dirty bits in the Vulkan pipeline description. Bug: angleproject:3204 Change-Id: Ie001d6c8fcc61af2e78cf2cb58a1691d8b735ff3 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1639750 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>

Vulkan: Process dirty framebuffers first
071d2a44 · Shahbaz Youssefi · Commit Bot · de70a713 · 071d2a44
Commit 071d2a44 authored Jun 03, 2019 by Shahbaz Youssefi Committed by Commit Bot Jun 04, 2019
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State.h src/libANGLE/State.h +5 -2

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--- a/src/libANGLE/State.h
+++ b/src/libANGLE/State.h
@@ -484,6 +484,11 @@ class State : angle::NonCopyable
    enum DirtyBitType
    {
+        // Note: process draw framebuffer binding first, so that other dirty bits whose effect
+        // depend on the current draw framebuffer are not processed while the old framebuffer is
+        // still bound.
+        DIRTY_BIT_DRAW_FRAMEBUFFER_BINDING,
+        DIRTY_BIT_READ_FRAMEBUFFER_BINDING,
        DIRTY_BIT_SCISSOR_TEST_ENABLED,
        DIRTY_BIT_SCISSOR,
        DIRTY_BIT_VIEWPORT,
@@ -526,8 +531,6 @@ class State : angle::NonCopyable
        DIRTY_BIT_DITHER_ENABLED,
        DIRTY_BIT_GENERATE_MIPMAP_HINT,
        DIRTY_BIT_SHADER_DERIVATIVE_HINT,
-        DIRTY_BIT_READ_FRAMEBUFFER_BINDING,
-        DIRTY_BIT_DRAW_FRAMEBUFFER_BINDING,
        DIRTY_BIT_RENDERBUFFER_BINDING,
        DIRTY_BIT_VERTEX_ARRAY_BINDING,
        DIRTY_BIT_DRAW_INDIRECT_BUFFER_BINDING,