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GPUDevice: Add GPUDownloadTexture

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Which can also be based in host/client memory.
Use it for screenshots and VRAM downloads.
This commit is contained in:
Stenzek
2024-02-28 16:13:50 +10:00
parent 4309d8ebf3
commit f936a36c85
27 changed files with 1501 additions and 527 deletions
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54
src/core/gpu_hw.cpp
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@ -663,6 +663,26 @@ bool GPU_HW::CreateBuffers()
GL_OBJECT_NAME(m_vram_read_texture, "VRAM Read Texture");
GL_OBJECT_NAME(m_vram_readback_texture, "VRAM Readback Texture");
if (g_gpu_device->GetFeatures().memory_import)
{
Log_DevPrint("Trying to import guest VRAM buffer for downloads...");
m_vram_readback_download_texture = g_gpu_device->CreateDownloadTexture(
m_vram_readback_texture->GetWidth(), m_vram_readback_texture->GetHeight(), m_vram_readback_texture->GetFormat(),
g_vram, sizeof(g_vram), VRAM_WIDTH * sizeof(u16));
if (!m_vram_readback_download_texture)
Log_ErrorPrint("Failed to create imported readback buffer");
}
if (!m_vram_readback_download_texture)
{
m_vram_readback_download_texture = g_gpu_device->CreateDownloadTexture(
m_vram_readback_texture->GetWidth(), m_vram_readback_texture->GetHeight(), m_vram_readback_texture->GetFormat());
if (!m_vram_readback_download_texture)
{
Log_ErrorPrint("Failed to create readback download texture");
return false;
}
}
if (g_gpu_device->GetFeatures().supports_texture_buffers)
{
if (!(m_vram_upload_buffer =
@ -703,6 +723,7 @@ void GPU_HW::DestroyBuffers()
ClearDisplayTexture();
m_vram_upload_buffer.reset();
m_vram_readback_download_texture.reset();
g_gpu_device->RecycleTexture(std::move(m_downsample_texture));
g_gpu_device->RecycleTexture(std::move(m_vram_read_texture));
g_gpu_device->RecycleTexture(std::move(m_vram_depth_texture));
@ -2405,8 +2426,18 @@ void GPU_HW::ReadVRAM(u32 x, u32 y, u32 width, u32 height)
}
// Get bounds with wrap-around handled.
const Common::Rectangle<u32> copy_rect = GetVRAMTransferBounds(x, y, width, height);
const u32 encoded_width = (copy_rect.GetWidth() + 1) / 2;
Common::Rectangle<u32> copy_rect = GetVRAMTransferBounds(x, y, width, height);
// Has to be aligned to an even pixel for the download, due to 32-bit packing.
if (copy_rect.left & 1)
copy_rect.left--;
if (copy_rect.right & 1)
copy_rect.right++;
DebugAssert((copy_rect.left % 2) == 0 && (copy_rect.GetWidth() % 2) == 0);
const u32 encoded_left = copy_rect.left / 2;
const u32 encoded_top = copy_rect.top;
const u32 encoded_width = copy_rect.GetWidth() / 2;
const u32 encoded_height = copy_rect.GetHeight();
// Encode the 24-bit texture as 16-bit.
@ -2421,9 +2452,22 @@ void GPU_HW::ReadVRAM(u32 x, u32 y, u32 width, u32 height)
GL_POP();
// Stage the readback and copy it into our shadow buffer.
g_gpu_device->DownloadTexture(m_vram_readback_texture.get(), 0, 0, encoded_width, encoded_height,
reinterpret_cast<u32*>(&g_vram[copy_rect.top * VRAM_WIDTH + copy_rect.left]),
VRAM_WIDTH * sizeof(u16));
if (m_vram_readback_download_texture->IsImported())
{
// Fast path, read directly.
m_vram_readback_download_texture->CopyFromTexture(encoded_left, encoded_top, m_vram_readback_texture.get(), 0, 0,
encoded_width, encoded_height, 0, 0, false);
m_vram_readback_download_texture->Flush();
}
else
{
// Copy to staging buffer, then to VRAM.
m_vram_readback_download_texture->CopyFromTexture(0, 0, m_vram_readback_texture.get(), 0, 0, encoded_width,
encoded_height, 0, 0, true);
m_vram_readback_download_texture->ReadTexels(0, 0, encoded_width, encoded_height,
&g_vram[copy_rect.top * VRAM_WIDTH + copy_rect.left],
VRAM_WIDTH * sizeof(u16));
}
RestoreDeviceContext();
}