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GPU: Properly implement display transfers.

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This commit is contained in:
Tony Wasserka 2014-07-11 19:01:14 +02:00
parent 16bbc4f81b
commit bbc6f314eb
1 changed files with 19 additions and 1 deletions
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20
src/core/hw/gpu.cpp
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@ -177,7 +177,25 @@ inline void Write(u32 addr, const T data) {
case Registers::DisplayTriggerTransfer:
g_regs.display_transfer.trigger = data;
if (g_regs.display_transfer.trigger & 1) {
// TODO: Perform display transfer!
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);
}
// Clear previous contents until we implement proper buffer clearing
memset(source_pointer, 0x20, g_regs.display_transfer.input_width*g_regs.display_transfer.input_height*4);
DEBUG_LOG(GPU, "DisplayTriggerTransfer: %x bytes from %x(%xx%x)-> %x(%xx%x), dst format %x",
g_regs.display_transfer.output_height * g_regs.display_transfer.output_width * 4,
g_regs.display_transfer.GetPhysicalInputAddress(), (int)g_regs.display_transfer.input_width, (int)g_regs.display_transfer.input_height,
g_regs.display_transfer.GetPhysicalOutputAddress(), (int)g_regs.display_transfer.output_width, (int)g_regs.display_transfer.output_height,
(int)g_regs.display_transfer.output_format);
}
break;