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-rw-r--r--src/core/hle/service/gsp.cpp36
-rw-r--r--src/core/hle/service/gsp.h12
2 files changed, 47 insertions, 1 deletions
diff --git a/src/core/hle/service/gsp.cpp b/src/core/hle/service/gsp.cpp
index f793b592c..417c01b83 100644
--- a/src/core/hle/service/gsp.cpp
+++ b/src/core/hle/service/gsp.cpp
@@ -105,6 +105,40 @@ void ReadHWRegs(Service::Interface* self) {
}
}
+void SetBufferSwap(u32 screen_id, const FrameBufferInfo& info) {
+ u32 base_address = 0x400000;
+ if (info.active_fb == 0) {
+ WriteHWRegs(base_address + 4 * GPU_REG_INDEX(framebuffer_config[screen_id].address_left1), 4, &info.address_left);
+ WriteHWRegs(base_address + 4 * GPU_REG_INDEX(framebuffer_config[screen_id].address_right1), 4, &info.address_right);
+ } else {
+ WriteHWRegs(base_address + 4 * GPU_REG_INDEX(framebuffer_config[screen_id].address_left2), 4, &info.address_left);
+ WriteHWRegs(base_address + 4 * GPU_REG_INDEX(framebuffer_config[screen_id].address_right2), 4, &info.address_right);
+ }
+ WriteHWRegs(base_address + 4 * GPU_REG_INDEX(framebuffer_config[screen_id].stride), 4, &info.stride);
+ WriteHWRegs(base_address + 4 * GPU_REG_INDEX(framebuffer_config[screen_id].color_format), 4, &info.format);
+ WriteHWRegs(base_address + 4 * GPU_REG_INDEX(framebuffer_config[screen_id].active_fb), 4, &info.shown_fb);
+}
+
+/**
+ * GSP_GPU::SetBufferSwap service function
+ *
+ * Updates GPU display framebuffer configuration using the specified parameters.
+ *
+ * Inputs:
+ * 1 : Screen ID (0 = top screen, 1 = bottom screen)
+ * 2-7 : FrameBufferInfo structure
+ * Outputs:
+ * 1: Result code
+ */
+void SetBufferSwap(Service::Interface* self) {
+ u32* cmd_buff = Service::GetCommandBuffer();
+ u32 screen_id = cmd_buff[1];
+ FrameBufferInfo* fb_info = (FrameBufferInfo*)&cmd_buff[2];
+ SetBufferSwap(screen_id, *fb_info);
+
+ cmd_buff[1] = 0; // No error
+}
+
/**
* GSP_GPU::RegisterInterruptRelayQueue service function
* Inputs:
@@ -283,7 +317,7 @@ const Interface::FunctionInfo FunctionTable[] = {
{0x00020084, nullptr, "WriteHWRegsWithMask"},
{0x00030082, nullptr, "WriteHWRegRepeat"},
{0x00040080, ReadHWRegs, "ReadHWRegs"},
- {0x00050200, nullptr, "SetBufferSwap"},
+ {0x00050200, SetBufferSwap, "SetBufferSwap"},
{0x00060082, nullptr, "SetCommandList"},
{0x000700C2, nullptr, "RequestDma"},
{0x00080082, nullptr, "FlushDataCache"},
diff --git a/src/core/hle/service/gsp.h b/src/core/hle/service/gsp.h
index b25dbb7bc..884cfd65a 100644
--- a/src/core/hle/service/gsp.h
+++ b/src/core/hle/service/gsp.h
@@ -64,6 +64,18 @@ struct InterruptRelayQueue {
static_assert(sizeof(InterruptRelayQueue) == 0x40,
"InterruptRelayQueue struct has incorrect size");
+struct FrameBufferInfo {
+ BitField<0, 1, u32> active_fb; // 0 = first, 1 = second
+
+ u32 address_left;
+ u32 address_right;
+ u32 stride; // maps to 0x1EF00X90 ?
+ u32 format; // maps to 0x1EF00X70 ?
+ u32 shown_fb; // maps to 0x1EF00X78 ?
+ u32 unknown;
+};
+static_assert(sizeof(FrameBufferInfo) == 0x1c, "Struct has incorrect size");
+
/// GSP command
struct Command {
BitField<0, 8, CommandId> id;