Add static buffer support

src/gpu/vk/GrVkGpu.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrVkGpu.h"
 
 #include "GrContextOptions.h"
@@ skipping 407 matching lines @@
                          height);
         }
     }
 
     GR_VK_CALL(interface, UnmapMemory(fDevice, alloc.fMemory));
 
     return true;
 }
 
 bool GrVkGpu::uploadTexDataOptimal(GrVkTexture* tex,
-                                    int left, int top, int width, int height,
-                                    GrPixelConfig dataConfig,
-                                    const SkTArray<GrMipLevel>& texels) {
+                                   int left, int top, int width, int height,
+                                   GrPixelConfig dataConfig,
+                                   const SkTArray<GrMipLevel>& texels) {
     SkASSERT(!tex->isLinearTiled());
     // The assumption is either that we have no mipmaps, or that our rect is the entire texture
     SkASSERT(1 == texels.count() ||
              (0 == left && 0 == top && width == tex->width() && height == tex->height()));
 
     // If we're uploading compressed data then we should be using uploadCompressedTexData
     SkASSERT(!GrPixelConfigIsCompressed(dataConfig));
 
     if (width == 0 || height == 0) {
         return false;
@@ skipping 213 matching lines @@
             tex->unref();
             return nullptr;
         }
     }
 
     return tex;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 
+bool GrVkGpu::updateBuffer(GrVkBuffer* buffer, const void* src, size_t srcSizeInBytes) {
+
+    // Update the buffer
+    fCurrentCmdBuffer->updateBuffer(this, buffer, 0, srcSizeInBytes, src);
+
+    // Submit the current command buffer to the Queue
+    // TODO: batch these?
+    this->submitCommandBuffer(kSkip_SyncQueue);

[egdaniel, 2016/06/30 13:51:19]

why then need to submit the command buffer here?

[jvanverth1, 2016/06/30 14:56:38]

Done.

+
+    return true;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
 static GrSurfaceOrigin resolve_origin(GrSurfaceOrigin origin) {
     // By default, all textures in Vk use TopLeft
     if (kDefault_GrSurfaceOrigin == origin) {
         return kTopLeft_GrSurfaceOrigin;
     } else {
         return origin;
     }
 }
 
 GrTexture* GrVkGpu::onWrapBackendTexture(const GrBackendTextureDesc& desc,
@@ skipping 808 matching lines @@
                                            GrVkRenderTarget* target,
                                            const SkIRect& bounds) {
     // Currently it is fine for us to always pass in 1 for the clear count even if no attachment
     // uses it. In the current state, we also only use the LOAD_OP_CLEAR for the color attachment
     // which is always at the first attachment.
     fCurrentCmdBuffer->beginRenderPass(this, renderPass, 1, colorClear, *target, bounds, true);
     fCurrentCmdBuffer->executeCommands(this, buffer);
     fCurrentCmdBuffer->endRenderPass(this);
 }