From 283fdabbf64c2d3b6532cdbea6cb3f71d777f140 Mon Sep 17 00:00:00 2001
From: yellows8 <yellows8@users.noreply.github.com>
Date: Sun, 19 Nov 2017 00:35:49 -0500
Subject: [PATCH] Renamed gfxproducerBufferInit to gfxproducerTegraBufferInit.
 Use an enum for the binder 'code' for this. Added comments for the
 BufferInitData structure.

---
 nx/include/switch/gfx/gfxproducer.h | 2 +-
 nx/source/gfx/gfxproducer.c         | 6 +++---
 nx/source/gfx/nvgfx.c               | 5 +++--
 3 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/nx/include/switch/gfx/gfxproducer.h b/nx/include/switch/gfx/gfxproducer.h
index 72ef5466..16c89c1b 100644
--- a/nx/include/switch/gfx/gfxproducer.h
+++ b/nx/include/switch/gfx/gfxproducer.h
@@ -6,4 +6,4 @@ Result gfxproducerDequeueBuffer(bool async, u32 width, u32 height, s32 format, u
 Result gfxproducerQueueBuffer(s32 buf, u8 input[0x5c]);
 Result gfxproducerQuery(s32 what, s32* value);
 Result gfxproducerConnect(s32 api, bool producerControlledByApp);
-Result gfxproducerBufferInit(s32 buf, u8 input[0x178]);
+Result gfxproducerTegraBufferInit(s32 buf, u8 input[0x178]);
diff --git a/nx/source/gfx/gfxproducer.c b/nx/source/gfx/gfxproducer.c
index b3aba070..9546098c 100644
--- a/nx/source/gfx/gfxproducer.c
+++ b/nx/source/gfx/gfxproducer.c
@@ -19,6 +19,7 @@ enum {
     DISCONNECT, //0xB
     SET_SIDEBAND_STREAM, //0xC
     ALLOCATE_BUFFERS, //0xD
+    TEGRA_BUFFER_INIT, //0xE (Custom Switch-specific command - unofficial name)
 };
 
 static char _gfxproducer_InterfaceDescriptor[] = "android.gui.IGraphicBufferProducer";
@@ -152,8 +153,7 @@ Result gfxproducerConnect(s32 api, bool producerControlledByApp) {
     return 0;
 }
 
-//Unknown what this is.
-Result gfxproducerBufferInit(s32 buf, u8 input[0x178]) {
+Result gfxproducerTegraBufferInit(s32 buf, u8 input[0x178]) {
     Result rc;
     parcelContext parcel, parcel_reply;
 
@@ -167,7 +167,7 @@ Result gfxproducerBufferInit(s32 buf, u8 input[0x178]) {
     parcelWriteInt32(&parcel, buf);
     parcelWriteData(&parcel, input, 0x178);
 
-    rc = parcelTransact(g_gfxproducerBinderSession, 0xE, &parcel, &parcel_reply);
+    rc = parcelTransact(g_gfxproducerBinderSession, TEGRA_BUFFER_INIT, &parcel, &parcel_reply);
     if (R_FAILED(rc)) return rc;
 
     //TODO: parse reply
diff --git a/nx/source/gfx/nvgfx.c b/nx/source/gfx/nvgfx.c
index f61ecb8b..eaf1ede3 100644
--- a/nx/source/gfx/nvgfx.c
+++ b/nx/source/gfx/nvgfx.c
@@ -37,6 +37,7 @@ static nvmapobj nvmap_objs[18];
 
 static u64 nvmap_obj6_mapbuffer_xdb_offset;
 
+//Some of this struct is based on tegra_dc_ext_flip_windowattr.
 static u32 g_gfxprod_BufferInitData[0x178>>2] = {
 0x1, 0x16c, 0x0,
 0x47424652,
@@ -48,7 +49,7 @@ static u32 g_gfxprod_BufferInitData[0x178>>2] = {
 0x0, 0xdaffcaff, 0x2a, 0x0,
 0xb00, 0x1, 0x1, 1280,
 0x3c0000, 0x1, 0x0, 1280,
-720, 0x532120, 0x1, 0x3,
+720, 0x532120, 0x1, 0x3, //0x52* field is flags
 0x1400,
 0x0, //nvmap handle
 0x0,
@@ -300,7 +301,7 @@ Result nvgfxInitialize(void) {
                      g_gfxprod_BufferInitData[0x20] = tmpval;
                      g_gfxprod_BufferInitData[0x21] = 0x3c0000*i;
                      ptr64[0x170>>3] = svcGetSystemTick();
-                     rc = gfxproducerBufferInit(i, (u8*)g_gfxprod_BufferInitData);
+                     rc = gfxproducerTegraBufferInit(i, (u8*)g_gfxprod_BufferInitData);
                      if (R_FAILED(rc)) break;
                  }
                  if (R_FAILED(rc)) break;