Introduce dynamic pipeline state

Adds a DynamicState struct to GrPipeline that has a field for the
scissor rect. Eventually this should become the only way to specify a
scissor rectangle and may grow to contain more fields. Adds an array of
DynamicStates to GrGpuCommandBuffer::draw and implements support in GL
and Vulkan.

Bug: skia:
Change-Id: If5aebbf9da5d192acf7e68e7def4674ffc7ec310
Reviewed-on: https://skia-review.googlesource.com/18510
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Chris Dalton <csmartdalton@google.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/src/gpu/GrGpuCommandBuffer.h b/src/gpu/GrGpuCommandBuffer.h
index fb5dc00943..3a6a3e7005 100644
--- a/src/gpu/GrGpuCommandBuffer.h
+++ b/src/gpu/GrGpuCommandBuffer.h
@@ -9,6 +9,7 @@
 #define GrGpuCommandBuffer_DEFINED
 
 #include "GrColor.h"
+#include "GrPipeline.h"
 #include "ops/GrDrawOp.h"
 
 class GrOpFlushState;
@@ -69,6 +70,7 @@ public:
     bool draw(const GrPipeline&,
               const GrPrimitiveProcessor&,
               const GrMesh[],
+              const GrPipeline::DynamicState[],
               int meshCount,
               const SkRect& bounds);
 
@@ -99,7 +101,8 @@ private:
     // overridden by backend-specific derived class to perform the draw call.
     virtual void onDraw(const GrPipeline&,
                         const GrPrimitiveProcessor&,
-                        const GrMesh*,
+                        const GrMesh[],
+                        const GrPipeline::DynamicState[],
                         int meshCount,
                         const SkRect& bounds) = 0;