From 8d5e877a031e373676e037251263065a333370ae Mon Sep 17 00:00:00 2001
From: Ben Vanik <ben.vanik@gmail.com>
Date: Sun, 30 Jun 2013 08:21:45 -0700
Subject: [PATCH] VdGetCurrentDisplayGamma and VdQueryVideoFlags.

---
 .../kernel/modules/xboxkrnl/xboxkrnl_video.cc | 45 +++++++++++++++++--
 .../kernel/modules/xboxkrnl/xboxkrnl_video.h  |  2 +
 2 files changed, 44 insertions(+), 3 deletions(-)

diff --git a/src/xenia/kernel/modules/xboxkrnl/xboxkrnl_video.cc b/src/xenia/kernel/modules/xboxkrnl/xboxkrnl_video.cc
index 5a8f36995..9d9e6561a 100644
--- a/src/xenia/kernel/modules/xboxkrnl/xboxkrnl_video.cc
+++ b/src/xenia/kernel/modules/xboxkrnl/xboxkrnl_video.cc
@@ -40,8 +40,45 @@ namespace xboxkrnl {
 // http://www.microsoft.com/en-za/download/details.aspx?id=5313 -- "Stripped Down Direct3D: Xbox 360 Command Buffer and Resource Management"
 
 
-// VdQueryVideoFlags
-// return 0x7?
+void xeVdGetCurrentDisplayGamma(uint32_t* arg0, float* arg1) {
+  *arg0 = 2;
+  *arg1 = 2.22222233f;
+}
+
+
+SHIM_CALL VdGetCurrentDisplayGamma_shim(
+    xe_ppc_state_t* ppc_state, KernelState* state) {
+  uint32_t arg0_ptr = SHIM_GET_ARG_32(0);
+  uint32_t arg1_ptr = SHIM_GET_ARG_32(1);
+
+  XELOGD(
+      "VdGetCurrentDisplayGamma(%.8X, %.8X)",
+      arg0_ptr, arg1_ptr);
+
+  uint32_t arg0 = 0;
+  union {
+    float float_value;
+    uint32_t uint_value;
+  } arg1;
+  xeVdGetCurrentDisplayGamma(&arg0, &arg1.float_value);
+  SHIM_SET_MEM_32(arg0_ptr, arg0);
+  SHIM_SET_MEM_32(arg1_ptr, arg1.uint_value);
+}
+
+
+uint32_t xeVdQueryVideoFlags() {
+  // ?
+  return 0x00000007;
+}
+
+
+SHIM_CALL VdQueryVideoFlags_shim(
+    xe_ppc_state_t* ppc_state, KernelState* state) {
+  XELOGD(
+      "VdQueryVideoFlags()");
+
+  SHIM_SET_RETURN(xeVdQueryVideoFlags());
+}
 
 
 void xeVdQueryVideoMode(X_VIDEO_MODE *video_mode, bool swap) {
@@ -243,11 +280,13 @@ SHIM_CALL VdEnableRingBufferRPtrWriteBack_shim(
 
 void xe::kernel::xboxkrnl::RegisterVideoExports(
     ExportResolver* export_resolver, KernelState* state) {
+  SHIM_SET_MAPPING("xboxkrnl.exe", VdGetCurrentDisplayGamma, state);
+  SHIM_SET_MAPPING("xboxkrnl.exe", VdQueryVideoFlags, state);
   SHIM_SET_MAPPING("xboxkrnl.exe", VdQueryVideoMode, state);
   SHIM_SET_MAPPING("xboxkrnl.exe", VdInitializeEngines, state);
   SHIM_SET_MAPPING("xboxkrnl.exe", VdSetGraphicsInterruptCallback, state);
   SHIM_SET_MAPPING("xboxkrnl.exe", VdInitializeRingBuffer, state);
-  SHIM_SET_MAPPING("xboxkrnl.exe", VdEnableRingBufferRPtrWriteBack, state);
+  SHIM_SET_MAPPING("xboxkrnl.exe", VdEnableRingBufferRPtrWriteBack, state);
 
   xe_memory_ref memory = state->memory();
   uint8_t* mem = xe_memory_addr(memory);
diff --git a/src/xenia/kernel/modules/xboxkrnl/xboxkrnl_video.h b/src/xenia/kernel/modules/xboxkrnl/xboxkrnl_video.h
index e6a207262..d9837489b 100644
--- a/src/xenia/kernel/modules/xboxkrnl/xboxkrnl_video.h
+++ b/src/xenia/kernel/modules/xboxkrnl/xboxkrnl_video.h
@@ -37,6 +37,8 @@ X_VIDEO_MODE;
 #pragma pack(pop)
 XEASSERTSTRUCTSIZE(X_VIDEO_MODE, 48);
 
+void xeVdGetCurrentDisplayGamma(uint32_t* arg0, float* arg1);
+uint32_t xeVdQueryVideoFlags();
 void xeVdQueryVideoMode(X_VIDEO_MODE *video_mode, bool swap);
 
 void xeVdInitializeEngines(uint32_t unk0, uint32_t callback, uint32_t unk1,