Add format modifier IDs for EGL_EXT_image_dma_buf_import extension

ui/gl/gl_image_ozone_native_pixmap.cc

Index: ui/gl/gl_image_ozone_native_pixmap.cc
diff --git a/ui/gl/gl_image_ozone_native_pixmap.cc b/ui/gl/gl_image_ozone_native_pixmap.cc
index 977f02e424ff06f389098e1a4094bc4dfa6da31a..97e784313b6dece79a905fbcad5fc469b822d7e5 100644
--- a/ui/gl/gl_image_ozone_native_pixmap.cc
+++ b/ui/gl/gl_image_ozone_native_pixmap.cc
@@ -137,9 +137,14 @@ bool GLImageOzoneNativePixmap::Initialize(ui::NativePixmap* pixmap,
     attrs.push_back(EGL_LINUX_DRM_FOURCC_EXT);
     attrs.push_back(FourCC(format));
 
+    const EGLint kLinuxDrmModifiers[] = {EGL_LINUX_DRM_PLANE0_MODIFIER0_EXT,
+                                         EGL_LINUX_DRM_PLANE1_MODIFIER0_EXT,
+                                         EGL_LINUX_DRM_PLANE2_MODIFIER0_EXT};
+
     for (size_t plane = 0;
          plane < gfx::NumberOfPlanesForBufferFormat(pixmap->GetBufferFormat());
          ++plane) {
+      uint64_t modifier = pixmap->GetDmaBufModifier(plane);
       attrs.push_back(EGL_DMA_BUF_PLANE0_FD_EXT + plane * 3);
       attrs.push_back(
           pixmap->GetDmaBufFd(plane < pixmap->GetDmaBufFdCount() ? plane : 0));
@@ -147,6 +152,10 @@ bool GLImageOzoneNativePixmap::Initialize(ui::NativePixmap* pixmap,
       attrs.push_back(pixmap->GetDmaBufOffset(plane));
       attrs.push_back(EGL_DMA_BUF_PLANE0_PITCH_EXT + plane * 3);
       attrs.push_back(pixmap->GetDmaBufPitch(plane));
+      attrs.push_back(kLinuxDrmModifiers[plane]);

[rickyz (no longer on Chrome), 2016/06/28 06:53:13]

Should we DCHECK that plane < arraysize(kLinuxDrmModifiers) here?

+      attrs.push_back(modifier & 0xffffffff);
+      attrs.push_back(kLinuxDrmModifiers[plane] + 1);
+      attrs.push_back(static_cast<uint32_t>(modifier >> 32));
     }
     attrs.push_back(EGL_NONE);