ozone: Allocate scanout buffers according to KMS modifiers.

ui/ozone/platform/drm/gpu/gbm_buffer.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/ozone/platform/drm/gpu/gbm_buffer.h"
 
 #include <drm.h>
 #include <fcntl.h>
 #include <gbm.h>
 #include <xf86drm.h>
@@ skipping 12 matching lines @@
 #include "ui/ozone/platform/drm/gpu/gbm_surfaceless.h"
 #include "ui/ozone/public/ozone_platform.h"
 #include "ui/ozone/public/surface_factory_ozone.h"
 
 namespace ui {
 
 GbmBuffer::GbmBuffer(const scoped_refptr<GbmDevice>& gbm,
                      gbm_bo* bo,
                      uint32_t format,
                      uint32_t flags,
+                     uint64_t modifier,
+                     uint32_t addfb_flags,
                      std::vector<base::ScopedFD>&& fds,
                      const gfx::Size& size,
+
                      const std::vector<gfx::NativePixmapPlane>&& planes)
-    : GbmBufferBase(gbm, bo, format, flags),
+    : GbmBufferBase(gbm, bo, format, flags, modifier, addfb_flags),
       format_(format),
       flags_(flags),
       fds_(std::move(fds)),
       size_(size),
       planes_(std::move(planes)) {}
 
 GbmBuffer::~GbmBuffer() {
   if (bo())
     gbm_bo_destroy(bo());
 }
@@ skipping 37 matching lines @@
   DCHECK_LT(index, planes_.size());
   return planes_[index].modifier;
 }
 
 // TODO(reveman): This should not be needed once crbug.com/597932 is fixed,
 // as the size would be queried directly from the underlying bo.
 gfx::Size GbmBuffer::GetSize() const {
   return size_;
 }
 
-// static
-scoped_refptr<GbmBuffer> GbmBuffer::CreateBuffer(
+scoped_refptr<GbmBuffer> GbmBuffer::CreateBufferForBO(
     const scoped_refptr<GbmDevice>& gbm,
+    gbm_bo* bo,
     uint32_t format,
     const gfx::Size& size,
-    uint32_t flags) {
-  TRACE_EVENT2("drm", "GbmBuffer::CreateBuffer", "device",
-               gbm->device_path().value(), "size", size.ToString());
-
-  gbm_bo* bo =
-      gbm_bo_create(gbm->device(), size.width(), size.height(), format, flags);
+    uint32_t flags,
+    uint64_t modifier,
+    uint32_t addfb_flags) {
   if (!bo)
     return nullptr;
 
   std::vector<base::ScopedFD> fds;
   std::vector<gfx::NativePixmapPlane> planes;
 
   for (size_t i = 0; i < gbm_bo_get_num_planes(bo); ++i) {
     // The fd returned by gbm_bo_get_fd is not ref-counted and need to be
     // kept open for the lifetime of the buffer.
     base::ScopedFD fd(gbm_bo_get_plane_fd(bo, i));
 
     // TODO(dcastagna): support multiple fds.
     // crbug.com/642410
     if (!i) {
       if (!fd.is_valid()) {
         PLOG(ERROR) << "Failed to export buffer to dma_buf";
         gbm_bo_destroy(bo);
         return nullptr;
       }
       fds.emplace_back(std::move(fd));
     }
 
     planes.emplace_back(
         gbm_bo_get_plane_stride(bo, i), gbm_bo_get_plane_offset(bo, i),
         gbm_bo_get_plane_size(bo, i), gbm_bo_get_plane_format_modifier(bo, i));
   }
-  scoped_refptr<GbmBuffer> buffer(new GbmBuffer(
-      gbm, bo, format, flags, std::move(fds), size, std::move(planes)));
+  scoped_refptr<GbmBuffer> buffer(
+      new GbmBuffer(gbm, bo, format, flags, modifier, addfb_flags,
+                    std::move(fds), size, std::move(planes)));
   if (flags & GBM_BO_USE_SCANOUT && !buffer->GetFramebufferId())
     return nullptr;
 
   return buffer;
 }
 
 // static
+scoped_refptr<GbmBuffer> GbmBuffer::CreateBufferWithModifiers(
+    const scoped_refptr<GbmDevice>& gbm,
+    uint32_t format,
+    const gfx::Size& size,
+    uint32_t flags,
+    const std::vector<uint64_t>& modifiers) {
+  TRACE_EVENT2("drm", "GbmBuffer::CreateBufferWithModifiers", "device",
+               gbm->device_path().value(), "size", size.ToString());
+
+  gbm_bo* bo =
+      gbm_bo_create_with_modifiers(gbm->device(), size.width(), size.height(),
+                                   format, modifiers.data(), modifiers.size());
+
+  return CreateBufferForBO(gbm, bo, format, size, flags,
+                           gbm_bo_get_format_modifier(bo),
+                           DRM_MODE_FB_MODIFIERS);
+}
+
+// static
+scoped_refptr<GbmBuffer> GbmBuffer::CreateBuffer(
+    const scoped_refptr<GbmDevice>& gbm,
+    uint32_t format,
+    const gfx::Size& size,
+    uint32_t flags) {
+  TRACE_EVENT2("drm", "GbmBuffer::CreateBuffer", "device",
+               gbm->device_path().value(), "size", size.ToString());
+
+  gbm_bo* bo =
+      gbm_bo_create(gbm->device(), size.width(), size.height(), format, flags);
+
+  return CreateBufferForBO(gbm, bo, format, size, flags, 0, 0);
+}
+
+// static
 scoped_refptr<GbmBuffer> GbmBuffer::CreateBufferFromFds(
     const scoped_refptr<GbmDevice>& gbm,
     uint32_t format,
     const gfx::Size& size,
     std::vector<base::ScopedFD>&& fds,
     const std::vector<gfx::NativePixmapPlane>& planes) {
   TRACE_EVENT2("drm", "GbmBuffer::CreateBufferFromFD", "device",
                gbm->device_path().value(), "size", size.ToString());
   DCHECK_LE(fds.size(), planes.size());
   DCHECK_EQ(planes[0].offset, 0);
@@ skipping 20 matching lines @@
     if (!bo) {
       LOG(ERROR) << "nullptr returned from gbm_bo_import";
       return nullptr;
     }
   }
 
   uint32_t flags = GBM_BO_USE_RENDERING;
   if (use_scanout)
     flags |= GBM_BO_USE_SCANOUT;
   scoped_refptr<GbmBuffer> buffer(new GbmBuffer(
-      gbm, bo, format, flags, std::move(fds), size, std::move(planes)));
+      gbm, bo, format, flags, 0, 0, std::move(fds), size, std::move(planes)));
   // If scanout support for buffer is expected then make sure we managed to
   // create a framebuffer for it as otherwise using it for scanout will fail.
   if (use_scanout && !buffer->GetFramebufferId())
     return nullptr;
 
   return buffer;
 }
 
 GbmPixmap::GbmPixmap(GbmSurfaceFactory* surface_manager,
                      const scoped_refptr<GbmBuffer>& buffer)
@@ skipping 108 matching lines @@
   DCHECK(!processing_callback_.is_null());
   if (!processing_callback_.Run(this, processed_pixmap_)) {
     LOG(ERROR) << "Failed processing NativePixmap";
     return nullptr;
   }
 
   return processed_pixmap_->buffer();
 }
 
 }  // namespace ui