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-rw-r--r--src/core/hw/gpu.cpp53
1 files changed, 47 insertions, 6 deletions
diff --git a/src/core/hw/gpu.cpp b/src/core/hw/gpu.cpp
index 49fc574bc..31989f445 100644
--- a/src/core/hw/gpu.cpp
+++ b/src/core/hw/gpu.cpp
@@ -290,13 +290,54 @@ inline void Write(u32 addr, const T data) {
u8* source_pointer = Memory::GetPointer(g_regs.display_transfer.GetPhysicalInputAddress());
u8* dest_pointer = Memory::GetPointer(g_regs.display_transfer.GetPhysicalOutputAddress());
-
- // TODO: Perform display transfer correctly!
for (int y = 0; y < g_regs.display_transfer.output_height; ++y) {
- // TODO: Copy size is just guesswork!
- memcpy(dest_pointer + y * g_regs.display_transfer.output_width * 4,
- source_pointer + y * g_regs.display_transfer.input_width * 4,
- g_regs.display_transfer.output_width * 4);
+ // TODO: Why does the register seem to hold twice the framebuffer width?
+ for (int x = 0; x < g_regs.display_transfer.output_width / 2; ++x) {
+ int source[4] = { 0, 0, 0, 0}; // rgba;
+
+ switch (g_regs.display_transfer.input_format) {
+ case Registers::FramebufferFormat::RGBA8:
+ {
+ // TODO: Most likely got the component order messed up.
+ u8* srcptr = source_pointer + x * 4 + y * g_regs.display_transfer.input_width * 4 / 2;
+ source[0] = srcptr[0]; // blue
+ source[1] = srcptr[1]; // green
+ source[2] = srcptr[2]; // red
+ source[3] = srcptr[3]; // alpha
+ break;
+ }
+
+ default:
+ ERROR_LOG(GPU, "Unknown source framebuffer format %x", (int)g_regs.display_transfer.input_format.Value());
+ break;
+ }
+
+ switch (g_regs.display_transfer.output_format) {
+ /*case Registers::FramebufferFormat::RGBA8:
+ {
+ // TODO: Untested
+ u8* dstptr = (u32*)(dest_pointer + x * 4 + y * g_regs.display_transfer.output_width * 4);
+ dstptr[0] = source[0];
+ dstptr[1] = source[1];
+ dstptr[2] = source[2];
+ dstptr[3] = source[3];
+ break;
+ }*/
+
+ case Registers::FramebufferFormat::RGB8:
+ {
+ u8* dstptr = dest_pointer + x * 3 + y * g_regs.display_transfer.output_width * 3 / 2;
+ dstptr[0] = source[0]; // blue
+ dstptr[1] = source[1]; // green
+ dstptr[2] = source[2]; // red
+ break;
+ }
+
+ default:
+ ERROR_LOG(GPU, "Unknown destination framebuffer format %x", static_cast<int>(g_regs.display_transfer.output_format.Value()));
+ break;
+ }
+ }
}
DEBUG_LOG(GPU, "DisplayTriggerTransfer: %x bytes from %x(%xx%x)-> %x(%xx%x), dst format %x",