NV: Expose the nvdisp_disp0 device and a weak reference to the nvdrv:a service.

NVFlinger will call into the nvdisp_disp0 device to perform screen flips, bypassing the ioctl interface.

We now have the address of the framebuffer to draw, we just need to actually put it on the screen.

2 files changed, 16 insertions, 2 deletions

diff --git a/src/core/hle/service/vi/vi.cpp b/src/core/hle/service/vi/vi.cpp
index 67d82c2bf..56aafe6bf 100644
--- a/src/core/hle/service/vi/vi.cpp
+++ b/src/core/hle/service/vi/vi.cpp
@@ -6,6 +6,7 @@
 #include "common/scope_exit.h"
 #include "core/core_timing.h"
 #include "core/hle/ipc_helpers.h"
+#include "core/hle/service/nvdrv/nvdrv_a.h"
 #include "core/hle/service/vi/vi.h"
 #include "core/hle/service/vi/vi_m.h"
 
@@ -743,7 +744,19 @@ void NVFlinger::Compose() {
             continue;
         }
 
-        // TODO(Subv): Send the buffer to the GPU for drawing.
+        auto& igbp_buffer = buffer->igbp_buffer;
+
+        // Now send the buffer to the GPU for drawing.
+        auto nvdrv = NVDRV::nvdrv_a.lock();
+        ASSERT(nvdrv);
+
+        // TODO(Subv): Support more than just disp0. The display device selection is probably based
+        // on which display we're drawing (Default, Internal, External, etc)
+        auto nvdisp = nvdrv->GetDevice<NVDRV::nvdisp_disp0>("/dev/nvdisp_disp0");
+        ASSERT(nvdisp);
+
+        nvdisp->flip(igbp_buffer.gpu_buffer_id, igbp_buffer.offset, igbp_buffer.format,
+                     igbp_buffer.width, igbp_buffer.height, igbp_buffer.stride);
 
         buffer_queue->ReleaseBuffer(buffer->slot);
     }
diff --git a/src/core/hle/service/vi/vi.h b/src/core/hle/service/vi/vi.h
index 576c4ce32..9604bd1c2 100644
--- a/src/core/hle/service/vi/vi.h
+++ b/src/core/hle/service/vi/vi.h
@@ -25,7 +25,8 @@ struct IGBPBuffer {
     u32_le gpu_buffer_id;
     INSERT_PADDING_WORDS(17);
     u32_le nvmap_handle;
-    INSERT_PADDING_WORDS(61);
+    u32_le offset;
+    INSERT_PADDING_WORDS(60);
 };
 
 static_assert(sizeof(IGBPBuffer) == 0x16C, "IGBPBuffer has wrong size");