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GPU: Eliminate temporary buffer when reading back

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This commit is contained in:
Connor McLaughlin
2019-11-14 17:16:59 +10:00
parent 3998b9684e
commit 9ea7a8418c
11 changed files with 39 additions and 50 deletions
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20
src/core/gpu_commands.cpp
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@ -330,14 +330,24 @@ bool GPU::HandleCopyRectangleVRAMToCPUCommand(const u32*& command_ptr, u32 comma
// all rendering should be done first...
FlushRender();
// TODO: A better way of doing this..
std::vector<u32> temp(num_words);
ReadVRAM(src_x, src_y, width, height, temp.data());
for (const u32 bits : temp)
m_GPUREAD_buffer.push_back(bits);
// TODO: A better way of doing this.. get rid of the m_GPUREAD_buffer.
ReadVRAM(src_x, src_y, width, height);
for (u32 row = 0; row < height;)
{
const u32 row_offset = ((src_y + row++) % VRAM_HEIGHT) * VRAM_WIDTH;
for (u32 col = 0; col < width;)
{
// TODO: Handle unaligned reads...
const u32 col_offset1 = row_offset + ((src_x + col++) % VRAM_WIDTH);
const u32 col_offset2 = row_offset + ((src_x + col++) % VRAM_WIDTH);
m_GPUREAD_buffer.push_back(ZeroExtend32(m_vram_ptr[col_offset1]) | (ZeroExtend32(m_vram_ptr[col_offset2]) << 16));
}
}
if (m_system->GetSettings().debugging.dump_vram_to_cpu_copies)
{
std::vector<u32> temp;
std::copy(m_GPUREAD_buffer.begin(), m_GPUREAD_buffer.end(), std::back_inserter(temp));
DumpVRAMToFile(SmallString::FromFormat("vram_to_cpu_copy_%u.png", s_vram_to_cpu_dump_id++), width, height,
sizeof(u16) * width, temp.data(), true);
}