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libretro: Additional work 

- Reliable resolution switching.
 - Hook up logging.
 - Memory cards and controller type settings.
 - Save state support.
 - Direct3D support.
This commit is contained in:
Connor McLaughlin 2020-06-30 02:47:27 +10:00
parent 2a38090e7a
commit 861b98ed3b
18 changed files with 774 additions and 897 deletions
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4
duckstation.sln
View File

@ -438,15 +438,19 @@ Global
{4266505B-DBAF-484B-AB31-B53B9C8235B3}.ReleaseLTCG|x86.ActiveCfg = ReleaseLTCG|Win32
{4266505B-DBAF-484B-AB31-B53B9C8235B3}.ReleaseLTCG|x86.Build.0 = ReleaseLTCG|Win32
{9D206548-DE8F-4D9D-A561-C7E5CD7A20DF}.Debug|x64.ActiveCfg = Debug|x64
{9D206548-DE8F-4D9D-A561-C7E5CD7A20DF}.Debug|x64.Build.0 = Debug|x64
{9D206548-DE8F-4D9D-A561-C7E5CD7A20DF}.Debug|x86.ActiveCfg = Debug|Win32
{9D206548-DE8F-4D9D-A561-C7E5CD7A20DF}.Debug|x86.Build.0 = Debug|Win32
{9D206548-DE8F-4D9D-A561-C7E5CD7A20DF}.DebugFast|x64.ActiveCfg = DebugFast|x64
{9D206548-DE8F-4D9D-A561-C7E5CD7A20DF}.DebugFast|x64.Build.0 = DebugFast|x64
{9D206548-DE8F-4D9D-A561-C7E5CD7A20DF}.DebugFast|x86.ActiveCfg = DebugFast|Win32
{9D206548-DE8F-4D9D-A561-C7E5CD7A20DF}.DebugFast|x86.Build.0 = DebugFast|Win32
{9D206548-DE8F-4D9D-A561-C7E5CD7A20DF}.Release|x64.ActiveCfg = Release|x64
{9D206548-DE8F-4D9D-A561-C7E5CD7A20DF}.Release|x64.Build.0 = Release|x64
{9D206548-DE8F-4D9D-A561-C7E5CD7A20DF}.Release|x86.ActiveCfg = Release|Win32
{9D206548-DE8F-4D9D-A561-C7E5CD7A20DF}.Release|x86.Build.0 = Release|Win32
{9D206548-DE8F-4D9D-A561-C7E5CD7A20DF}.ReleaseLTCG|x64.ActiveCfg = ReleaseLTCG|x64
{9D206548-DE8F-4D9D-A561-C7E5CD7A20DF}.ReleaseLTCG|x64.Build.0 = ReleaseLTCG|x64
{9D206548-DE8F-4D9D-A561-C7E5CD7A20DF}.ReleaseLTCG|x86.ActiveCfg = ReleaseLTCG|Win32
{9D206548-DE8F-4D9D-A561-C7E5CD7A20DF}.ReleaseLTCG|x86.Build.0 = ReleaseLTCG|Win32
{7F909E29-4808-4BD9-A60C-56C51A3AAEC2}.Debug|x64.ActiveCfg = Debug|x64

2
src/CMakeLists.txt
View File

@ -3,7 +3,7 @@ add_subdirectory(common-tests)
add_subdirectory(core)
add_subdirectory(scmversion)
if(ANDROID OR BUILD_SDL_FRONTEND OR BUILD_QT_FRONTEND)
if(ANDROID OR BUILD_SDL_FRONTEND OR BUILD_QT_FRONTEND OR BUILD_LIBRETRO_CORE)
add_subdirectory(frontend-common)
endif()

10
src/duckstation-libretro/CMakeLists.txt
View File

@ -5,19 +5,19 @@ add_library(duckstation-libretro SHARED
libretro_host_display.h
libretro_host_interface.cpp
libretro_host_interface.h
libretro_opengl_host_display.cpp
libretro_opengl_host_display.h
libretro_settings_interface.cpp
libretro_settings_interface.h
main.cpp
opengl_host_display.cpp
opengl_host_display.h
)
if(WIN32)
target_sources(duckstation-libretro PRIVATE
d3d11_host_display.cpp
d3d11_host_display.h
libretro_d3d11_host_display.cpp
libretro_d3d11_host_display.h
)
endif()
target_link_libraries(duckstation-libretro PRIVATE core common imgui glad scmversion libretro-common)
target_link_libraries(duckstation-libretro PRIVATE core common imgui glad scmversion frontend-common libretro-common)

283
src/duckstation-libretro/d3d11_host_display.cpp
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@ -1,283 +0,0 @@
#include "d3d11_host_display.h"
#include "common/assert.h"
#include "common/d3d11/shader_compiler.h"
#include "common/log.h"
#include "frontend-common/display_ps.hlsl.h"
#include "frontend-common/display_vs.hlsl.h"
#include "libretro_host_interface.h"
#include <array>
Log_SetChannel(D3D11HostDisplay);
#define HAVE_D3D11
#include "libretro_d3d.h"
class D3D11HostDisplayTexture : public HostDisplayTexture
{
public:
template<typename T>
using ComPtr = Microsoft::WRL::ComPtr<T>;
D3D11HostDisplayTexture(ComPtr<ID3D11Texture2D> texture, ComPtr<ID3D11ShaderResourceView> srv, u32 width, u32 height,
bool dynamic)
: m_texture(std::move(texture)), m_srv(std::move(srv)), m_width(width), m_height(height), m_dynamic(dynamic)
{
}
~D3D11HostDisplayTexture() override = default;
void* GetHandle() const override { return m_srv.Get(); }
u32 GetWidth() const override { return m_width; }
u32 GetHeight() const override { return m_height; }
ID3D11Texture2D* GetD3DTexture() const { return m_texture.Get(); }
ID3D11ShaderResourceView* GetD3DSRV() const { return m_srv.Get(); }
bool IsDynamic() const { return m_dynamic; }
static std::unique_ptr<D3D11HostDisplayTexture> Create(ID3D11Device* device, u32 width, u32 height, const void* data,
u32 data_stride, bool dynamic)
{
const CD3D11_TEXTURE2D_DESC desc(DXGI_FORMAT_R8G8B8A8_UNORM, width, height, 1, 1, D3D11_BIND_SHADER_RESOURCE,
dynamic ? D3D11_USAGE_DYNAMIC : D3D11_USAGE_DEFAULT,
dynamic ? D3D11_CPU_ACCESS_WRITE : 0, 1, 0, 0);
const D3D11_SUBRESOURCE_DATA srd{data, data_stride, data_stride * height};
ComPtr<ID3D11Texture2D> texture;
HRESULT hr = device->CreateTexture2D(&desc, data ? &srd : nullptr, texture.GetAddressOf());
if (FAILED(hr))
return {};
const CD3D11_SHADER_RESOURCE_VIEW_DESC srv_desc(D3D11_SRV_DIMENSION_TEXTURE2D, DXGI_FORMAT_R8G8B8A8_UNORM, 0, 1, 0,
1);
ComPtr<ID3D11ShaderResourceView> srv;
hr = device->CreateShaderResourceView(texture.Get(), &srv_desc, srv.GetAddressOf());
if (FAILED(hr))
return {};
return std::make_unique<D3D11HostDisplayTexture>(std::move(texture), std::move(srv), width, height, dynamic);
}
private:
ComPtr<ID3D11Texture2D> m_texture;
ComPtr<ID3D11ShaderResourceView> m_srv;
u32 m_width;
u32 m_height;
bool m_dynamic;
};
D3D11HostDisplay::D3D11HostDisplay(ComPtr<ID3D11Device> device, ComPtr<ID3D11DeviceContext> context)
: m_device(std::move(device)), m_context(std::move(context))
{
}
D3D11HostDisplay::~D3D11HostDisplay() = default;
HostDisplay::RenderAPI D3D11HostDisplay::GetRenderAPI() const
{
return HostDisplay::RenderAPI::D3D11;
}
void* D3D11HostDisplay::GetRenderDevice() const
{
return m_device.Get();
}
void* D3D11HostDisplay::GetRenderContext() const
{
return m_context.Get();
}
std::unique_ptr<HostDisplayTexture> D3D11HostDisplay::CreateTexture(u32 width, u32 height, const void* data,
u32 data_stride, bool dynamic)
{
return D3D11HostDisplayTexture::Create(m_device.Get(), width, height, data, data_stride, dynamic);
}
void D3D11HostDisplay::UpdateTexture(HostDisplayTexture* texture, u32 x, u32 y, u32 width, u32 height, const void* data,
u32 data_stride)
{
D3D11HostDisplayTexture* d3d11_texture = static_cast<D3D11HostDisplayTexture*>(texture);
if (!d3d11_texture->IsDynamic())
{
const CD3D11_BOX dst_box(x, y, 0, x + width, y + height, 1);
m_context->UpdateSubresource(d3d11_texture->GetD3DTexture(), 0, &dst_box, data, data_stride, data_stride * height);
}
else
{
D3D11_MAPPED_SUBRESOURCE sr;
HRESULT hr = m_context->Map(d3d11_texture->GetD3DTexture(), 0, D3D11_MAP_WRITE_DISCARD, 0, &sr);
if (FAILED(hr))
Panic("Failed to map dynamic host display texture");
char* dst_ptr = static_cast<char*>(sr.pData) + (y * sr.RowPitch) + (x * sizeof(u32));
const char* src_ptr = static_cast<const char*>(data);
if (sr.RowPitch == data_stride)
{
std::memcpy(dst_ptr, src_ptr, data_stride * height);
}
else
{
for (u32 row = 0; row < height; row++)
{
std::memcpy(dst_ptr, src_ptr, width * sizeof(u32));
src_ptr += data_stride;
dst_ptr += sr.RowPitch;
}
}
m_context->Unmap(d3d11_texture->GetD3DTexture(), 0);
}
}
bool D3D11HostDisplay::DownloadTexture(const void* texture_handle, u32 x, u32 y, u32 width, u32 height, void* out_data,
u32 out_data_stride)
{
ID3D11ShaderResourceView* srv =
const_cast<ID3D11ShaderResourceView*>(static_cast<const ID3D11ShaderResourceView*>(texture_handle));
ID3D11Resource* srv_resource;
D3D11_SHADER_RESOURCE_VIEW_DESC srv_desc;
srv->GetResource(&srv_resource);
srv->GetDesc(&srv_desc);
if (!m_readback_staging_texture.EnsureSize(m_context.Get(), width, height, srv_desc.Format, false))
return false;
m_readback_staging_texture.CopyFromTexture(m_context.Get(), srv_resource, 0, x, y, 0, 0, width, height);
return m_readback_staging_texture.ReadPixels<u32>(m_context.Get(), 0, 0, width, height, out_data_stride / sizeof(u32),
static_cast<u32*>(out_data));
}
void D3D11HostDisplay::SetVSync(bool enabled) {}
bool D3D11HostDisplay::CreateD3DResources()
{
HRESULT hr;
m_display_vertex_shader =
D3D11::ShaderCompiler::CreateVertexShader(m_device.Get(), s_display_vs_bytecode, sizeof(s_display_vs_bytecode));
m_display_pixel_shader =
D3D11::ShaderCompiler::CreatePixelShader(m_device.Get(), s_display_ps_bytecode, sizeof(s_display_ps_bytecode));
if (!m_display_vertex_shader || !m_display_pixel_shader)
return false;
if (!m_display_uniform_buffer.Create(m_device.Get(), D3D11_BIND_CONSTANT_BUFFER, DISPLAY_UNIFORM_BUFFER_SIZE))
return false;
CD3D11_RASTERIZER_DESC rasterizer_desc = CD3D11_RASTERIZER_DESC(CD3D11_DEFAULT());
rasterizer_desc.CullMode = D3D11_CULL_NONE;
hr = m_device->CreateRasterizerState(&rasterizer_desc, m_display_rasterizer_state.GetAddressOf());
if (FAILED(hr))
return false;
CD3D11_DEPTH_STENCIL_DESC depth_stencil_desc = CD3D11_DEPTH_STENCIL_DESC(CD3D11_DEFAULT());
depth_stencil_desc.DepthEnable = FALSE;
depth_stencil_desc.DepthWriteMask = D3D11_DEPTH_WRITE_MASK_ZERO;
hr = m_device->CreateDepthStencilState(&depth_stencil_desc, m_display_depth_stencil_state.GetAddressOf());
if (FAILED(hr))
return false;
CD3D11_BLEND_DESC blend_desc = CD3D11_BLEND_DESC(CD3D11_DEFAULT());
hr = m_device->CreateBlendState(&blend_desc, m_display_blend_state.GetAddressOf());
if (FAILED(hr))
return false;
CD3D11_SAMPLER_DESC sampler_desc = CD3D11_SAMPLER_DESC(CD3D11_DEFAULT());
sampler_desc.Filter = D3D11_FILTER_MIN_MAG_MIP_POINT;
hr = m_device->CreateSamplerState(&sampler_desc, m_point_sampler.GetAddressOf());
if (FAILED(hr))
return false;
sampler_desc.Filter = D3D11_FILTER_MIN_MAG_LINEAR_MIP_POINT;
hr = m_device->CreateSamplerState(&sampler_desc, m_linear_sampler.GetAddressOf());
if (FAILED(hr))
return false;
return true;
}
bool D3D11HostDisplay::RequestHardwareRendererContext(retro_hw_render_callback* cb)
{
cb->cache_context = true;
cb->bottom_left_origin = false;
cb->context_type = RETRO_HW_CONTEXT_DIRECT3D;
cb->version_major = 11;
cb->version_minor = 0;
return g_retro_environment_callback(RETRO_ENVIRONMENT_SET_HW_RENDER, cb);
}
std::unique_ptr<HostDisplay> D3D11HostDisplay::Create(bool debug_device)
{
retro_hw_render_interface_d3d11 ri = {};
ri.interface_type = RETRO_HW_RENDER_INTERFACE_D3D11;
ri.interface_version = RETRO_HW_RENDER_INTERFACE_D3D11_VERSION;
if (!g_retro_environment_callback(RETRO_ENVIRONMENT_GET_HW_RENDER_INTERFACE, &ri))
{
Log_ErrorPrint("Failed to get HW render interface");
return nullptr;
}
ComPtr<ID3D11Device> device(ri.device);
ComPtr<ID3D11DeviceContext> context(ri.context);
std::unique_ptr<D3D11HostDisplay> display = std::make_unique<D3D11HostDisplay>(std::move(device), std::move(context));
if (!display->CreateD3DResources())
return nullptr;
return display;
}
void D3D11HostDisplay::Render()
{
#if 0
static constexpr std::array<float, 4> clear_color = {};
m_context->ClearRenderTargetView(m_swap_chain_rtv.Get(), clear_color.data());
m_context->OMSetRenderTargets(1, m_swap_chain_rtv.GetAddressOf(), nullptr);
RenderDisplay();
if (!m_vsync && m_allow_tearing_supported)
m_swap_chain->Present(0, DXGI_PRESENT_ALLOW_TEARING);
else
m_swap_chain->Present(BoolToUInt32(m_vsync), 0);
ImGui::NewFrame();
ImGui_ImplSDL2_NewFrame(m_window);
ImGui_ImplDX11_NewFrame();
#endif
}
void D3D11HostDisplay::RenderDisplay()
{
#if 0
if (!m_display_texture_handle)
return;
const auto [vp_left, vp_top, vp_width, vp_height] =
CalculateDrawRect(m_window_width, m_window_height, m_display_top_margin);
m_context->IASetPrimitiveTopology(D3D11_PRIMITIVE_TOPOLOGY_TRIANGLELIST);
m_context->VSSetShader(m_display_vertex_shader.Get(), nullptr, 0);
m_context->PSSetShader(m_display_pixel_shader.Get(), nullptr, 0);
m_context->PSSetShaderResources(0, 1, reinterpret_cast<ID3D11ShaderResourceView**>(&m_display_texture_handle));
m_context->PSSetSamplers(
0, 1, m_display_linear_filtering ? m_linear_sampler.GetAddressOf() : m_point_sampler.GetAddressOf());
const float uniforms[4] = {
static_cast<float>(m_display_texture_view_x) / static_cast<float>(m_display_texture_width),
static_cast<float>(m_display_texture_view_y) / static_cast<float>(m_display_texture_height),
(static_cast<float>(m_display_texture_view_width) - 0.5f) / static_cast<float>(m_display_texture_width),
(static_cast<float>(m_display_texture_view_height) - 0.5f) / static_cast<float>(m_display_texture_height)};
const auto map = m_display_uniform_buffer.Map(m_context.Get(), sizeof(uniforms), sizeof(uniforms));
std::memcpy(map.pointer, uniforms, sizeof(uniforms));
m_display_uniform_buffer.Unmap(m_context.Get(), sizeof(uniforms));
m_context->VSSetConstantBuffers(0, 1, m_display_uniform_buffer.GetD3DBufferArray());
const CD3D11_VIEWPORT vp(static_cast<float>(vp_left), static_cast<float>(vp_top), static_cast<float>(vp_width),
static_cast<float>(vp_height));
m_context->RSSetViewports(1, &vp);
m_context->RSSetState(m_display_rasterizer_state.Get());
m_context->OMSetDepthStencilState(m_display_depth_stencil_state.Get(), 0);
m_context->OMSetBlendState(m_display_blend_state.Get(), nullptr, 0xFFFFFFFFu);
m_context->Draw(3, 0);
#endif
}

62
src/duckstation-libretro/d3d11_host_display.h
View File

@ -1,62 +0,0 @@
#pragma once
#include "common/d3d11/staging_texture.h"
#include "common/d3d11/stream_buffer.h"
#include "common/d3d11/texture.h"
#include "common/windows_headers.h"
#include "core/host_display.h"
#include "libretro.h"
#include <d3d11.h>
#include <memory>
#include <wrl/client.h>
class D3D11HostDisplay final : public HostDisplay
{
public:
template<typename T>
using ComPtr = Microsoft::WRL::ComPtr<T>;
D3D11HostDisplay(ComPtr<ID3D11Device> device, ComPtr<ID3D11DeviceContext> context);
~D3D11HostDisplay();
static bool RequestHardwareRendererContext(retro_hw_render_callback* cb);
static std::unique_ptr<HostDisplay> Create(bool debug_device);
RenderAPI GetRenderAPI() const override;
void* GetRenderDevice() const override;
void* GetRenderContext() const override;
std::unique_ptr<HostDisplayTexture> CreateTexture(u32 width, u32 height, const void* data, u32 data_stride,
bool dynamic) override;
void UpdateTexture(HostDisplayTexture* texture, u32 x, u32 y, u32 width, u32 height, const void* data,
u32 data_stride) override;
bool DownloadTexture(const void* texture_handle, u32 x, u32 y, u32 width, u32 height, void* out_data,
u32 out_data_stride) override;
void SetVSync(bool enabled) override;
private:
static constexpr u32 DISPLAY_UNIFORM_BUFFER_SIZE = 16;
bool CreateD3DResources();
void Render() override;
void RenderDisplay();
ComPtr<IDXGIFactory> m_dxgi_factory;
ComPtr<ID3D11Device> m_device;
ComPtr<ID3D11DeviceContext> m_context;
ComPtr<ID3D11RasterizerState> m_display_rasterizer_state;
ComPtr<ID3D11DepthStencilState> m_display_depth_stencil_state;
ComPtr<ID3D11BlendState> m_display_blend_state;
ComPtr<ID3D11VertexShader> m_display_vertex_shader;
ComPtr<ID3D11PixelShader> m_display_pixel_shader;
ComPtr<ID3D11SamplerState> m_point_sampler;
ComPtr<ID3D11SamplerState> m_linear_sampler;
D3D11::Texture m_display_pixels_texture;
D3D11::StreamBuffer m_display_uniform_buffer;
D3D11::AutoStagingTexture m_readback_staging_texture;
};

14
src/duckstation-libretro/duckstation-libretro.vcxproj
View File

@ -35,35 +35,35 @@
</ProjectConfiguration>
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\..\dep\imgui\imgui.vcxproj">
<Project>{bb08260f-6fbc-46af-8924-090ee71360c6}</Project>
</ProjectReference>
<ProjectReference Include="..\common\common.vcxproj">
<Project>{ee054e08-3799-4a59-a422-18259c105ffd}</Project>
</ProjectReference>
<ProjectReference Include="..\core\core.vcxproj">
<Project>{868b98c8-65a1-494b-8346-250a73a48c0a}</Project>
</ProjectReference>
<ProjectReference Include="..\frontend-common\frontend-common.vcxproj">
<Project>{6245dec8-d2da-47ee-a373-cbd6fcf3ece6}</Project>
</ProjectReference>
<ProjectReference Include="..\scmversion\scmversion.vcxproj">
<Project>{075ced82-6a20-46df-94c7-9624ac9ddbeb}</Project>
</ProjectReference>
</ItemGroup>
<ItemGroup>
<ClCompile Include="d3d11_host_display.cpp" />
<ClCompile Include="libretro_d3d11_host_display.cpp" />
<ClCompile Include="libretro_audio_stream.cpp" />
<ClCompile Include="libretro_host_display.cpp" />
<ClCompile Include="libretro_host_interface.cpp" />
<ClCompile Include="libretro_settings_interface.cpp" />
<ClCompile Include="main.cpp" />
<ClCompile Include="opengl_host_display.cpp" />
<ClCompile Include="libretro_opengl_host_display.cpp" />
</ItemGroup>
<ItemGroup>
<ClInclude Include="d3d11_host_display.h" />
<ClInclude Include="libretro_d3d11_host_display.h" />
<ClInclude Include="libretro_audio_stream.h" />
<ClInclude Include="libretro_host_display.h" />
<ClInclude Include="libretro_host_interface.h" />
<ClInclude Include="libretro_settings_interface.h" />
<ClInclude Include="opengl_host_display.h" />
<ClInclude Include="libretro_opengl_host_display.h" />
</ItemGroup>
<PropertyGroup Label="Globals">
<ProjectGuid>{9D206548-DE8F-4D9D-A561-C7E5CD7A20DF}</ProjectGuid>

8
src/duckstation-libretro/duckstation-libretro.vcxproj.filters
View File

@ -3,18 +3,18 @@
<ItemGroup>
<ClCompile Include="libretro_host_interface.cpp" />
<ClCompile Include="libretro_audio_stream.cpp" />
<ClCompile Include="opengl_host_display.cpp" />
<ClCompile Include="libretro_host_display.cpp" />
<ClCompile Include="d3d11_host_display.cpp" />
<ClCompile Include="main.cpp" />
<ClCompile Include="libretro_settings_interface.cpp" />
<ClCompile Include="libretro_opengl_host_display.cpp" />
<ClCompile Include="libretro_d3d11_host_display.cpp" />
</ItemGroup>
<ItemGroup>
<ClInclude Include="libretro_host_interface.h" />
<ClInclude Include="libretro_audio_stream.h" />
<ClInclude Include="opengl_host_display.h" />
<ClInclude Include="libretro_host_display.h" />
<ClInclude Include="d3d11_host_display.h" />
<ClInclude Include="libretro_settings_interface.h" />
<ClInclude Include="libretro_opengl_host_display.h" />
<ClInclude Include="libretro_d3d11_host_display.h" />
</ItemGroup>
</Project>

116
src/duckstation-libretro/libretro_d3d11_host_display.cpp Normal file
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@ -0,0 +1,116 @@
#include "libretro_d3d11_host_display.h"
#include "common/align.h"
#include "common/assert.h"
#include "common/d3d11/shader_compiler.h"
#include "common/log.h"
#include "libretro_host_interface.h"
Log_SetChannel(D3D11HostDisplay);
#define HAVE_D3D11
#include "libretro_d3d.h"
LibretroD3D11HostDisplay::LibretroD3D11HostDisplay() = default;
LibretroD3D11HostDisplay::~LibretroD3D11HostDisplay() = default;
void LibretroD3D11HostDisplay::SetVSync(bool enabled)
{
// The libretro frontend controls this.
Log_DevPrintf("Ignoring SetVSync(%u)", BoolToUInt32(enabled));
}
bool LibretroD3D11HostDisplay::RequestHardwareRendererContext(retro_hw_render_callback* cb)
{
cb->cache_context = true;
cb->bottom_left_origin = false;
cb->context_type = RETRO_HW_CONTEXT_DIRECT3D;
cb->version_major = 11;
cb->version_minor = 0;
return g_retro_environment_callback(RETRO_ENVIRONMENT_SET_HW_RENDER, cb);
}
bool LibretroD3D11HostDisplay::CreateRenderDevice(const WindowInfo& wi, std::string_view adapter_name,
bool debug_device)
{
retro_hw_render_interface* ri = nullptr;
if (!g_retro_environment_callback(RETRO_ENVIRONMENT_GET_HW_RENDER_INTERFACE, &ri))
{
Log_ErrorPrint("Failed to get HW render interface");
return false;
}
else if (ri->interface_type != RETRO_HW_RENDER_INTERFACE_D3D11 ||
ri->interface_version != RETRO_HW_RENDER_INTERFACE_D3D11_VERSION)
{
Log_ErrorPrint("Unexpected HW interface - type %u version %u", static_cast<unsigned>(ri->interface_type),
static_cast<unsigned>(ri->interface_version));
return false;
}
const retro_hw_render_interface_d3d11* d3d11_ri = reinterpret_cast<const retro_hw_render_interface_d3d11*>(ri);
if (!d3d11_ri->device || !d3d11_ri->context)
{
Log_ErrorPrintf("Missing D3D device or context");
return false;
}
m_device = d3d11_ri->device;
m_context = d3d11_ri->context;
return CreateResources();
}
void LibretroD3D11HostDisplay::DestroyRenderDevice()
{
DestroyResources();
m_framebuffer.Destroy();
m_context.Reset();
m_device.Reset();
}
void LibretroD3D11HostDisplay::ResizeRenderWindow(s32 new_window_width, s32 new_window_height)
{
m_window_info.surface_width = static_cast<u32>(new_window_width);
m_window_info.surface_height = static_cast<u32>(new_window_height);
}
bool LibretroD3D11HostDisplay::Render()
{
// TODO: Skip framebuffer when offset is (0,0).
if (!CheckFramebufferSize(m_display_texture_width, m_display_texture_height))
return false;
// Ensure we're not currently bound.
ID3D11ShaderResourceView* null_srv = nullptr;
m_context->PSSetShaderResources(0, 1, &null_srv);
m_context->OMSetRenderTargets(1u, m_framebuffer.GetD3DRTVArray(), nullptr);
if (HasDisplayTexture())
{
RenderDisplay(0, 0, m_display_texture_width, m_display_texture_height, m_display_texture_handle,
m_display_texture_width, m_display_texture_height, m_display_texture_view_x, m_display_texture_view_y,
m_display_texture_view_width, m_display_texture_view_height, m_display_linear_filtering);
}
if (HasSoftwareCursor())
{
const auto [left, top, width, height] = CalculateSoftwareCursorDrawRect();
RenderSoftwareCursor(left, top, width, height, m_cursor_texture.get());
}
// NOTE: libretro frontend expects the data bound to PS SRV slot 0.
m_context->OMSetRenderTargets(0, nullptr, nullptr);
m_context->PSSetShaderResources(0, 1, m_framebuffer.GetD3DSRVArray());
g_retro_video_refresh_callback(RETRO_HW_FRAME_BUFFER_VALID, m_display_texture_width, m_display_texture_height, 0);
return true;
}
bool LibretroD3D11HostDisplay::CheckFramebufferSize(u32 width, u32 height)
{
if (m_framebuffer.GetWidth() >= width && m_framebuffer.GetHeight() >= height)
return true;
const u32 rounded_width = Common::AlignUpPow2(width, 1024);
const u32 rounded_height = Common::AlignUpPow2(height, 512);
return m_framebuffer.Create(m_device.Get(), rounded_width, rounded_height, DXGI_FORMAT_R8G8B8A8_UNORM,
D3D11_BIND_SHADER_RESOURCE | D3D11_BIND_RENDER_TARGET);
}

27
src/duckstation-libretro/libretro_d3d11_host_display.h Normal file
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@ -0,0 +1,27 @@
#pragma once
#include "common/d3d11/texture.h"
#include "frontend-common/d3d11_host_display.h"
#include "libretro.h"
class LibretroD3D11HostDisplay final : public FrontendCommon::D3D11HostDisplay
{
public:
LibretroD3D11HostDisplay();
~LibretroD3D11HostDisplay();
static bool RequestHardwareRendererContext(retro_hw_render_callback* cb);
bool CreateRenderDevice(const WindowInfo& wi, std::string_view adapter_name, bool debug_device) override;
void DestroyRenderDevice();
void ResizeRenderWindow(s32 new_window_width, s32 new_window_height) override;
void SetVSync(bool enabled) override;
bool Render() override;
private:
bool CheckFramebufferSize(u32 width, u32 height);
D3D11::Texture m_framebuffer;
};

80
src/duckstation-libretro/libretro_host_display.cpp
View File

@ -1,8 +1,8 @@
#include "libretro_host_display.h"
#include "libretro_host_interface.h"
#include "common/assert.h"
#include "common/log.h"
#include "libretro.h"
#include "libretro_host_interface.h"
#include <array>
#include <tuple>
Log_SetChannel(LibretroHostDisplay);
@ -102,7 +102,52 @@ void* LibretroHostDisplay::GetRenderContext() const
return nullptr;
}
void LibretroHostDisplay::WindowResized(s32 new_window_width, s32 new_window_height) {}
bool LibretroHostDisplay::HasRenderDevice() const
{
return true;
}
bool LibretroHostDisplay::HasRenderSurface() const
{
return true;
}
bool LibretroHostDisplay::CreateRenderDevice(const WindowInfo& wi, std::string_view adapter_name, bool debug_device)
{
m_window_info = wi;
return true;
}
bool LibretroHostDisplay::InitializeRenderDevice(std::string_view shader_cache_directory, bool debug_device)
{
return true;
}
bool LibretroHostDisplay::MakeRenderContextCurrent()
{
return true;
}
bool LibretroHostDisplay::DoneRenderContextCurrent()
{
return true;
}
void LibretroHostDisplay::DestroyRenderDevice() {}
void LibretroHostDisplay::DestroyRenderSurface() {}
bool LibretroHostDisplay::ChangeRenderWindow(const WindowInfo& wi)
{
m_window_info = wi;
return true;
}
void LibretroHostDisplay::ResizeRenderWindow(s32 new_window_width, s32 new_window_height)
{
m_window_info.surface_width = new_window_width;
m_window_info.surface_height = new_window_height;
}
std::unique_ptr<HostDisplayTexture> LibretroHostDisplay::CreateTexture(u32 width, u32 height, const void* data,
u32 data_stride, bool dynamic)
@ -123,28 +168,21 @@ bool LibretroHostDisplay::DownloadTexture(const void* texture_handle, u32 x, u32
return true;
}
void LibretroHostDisplay::SetVSync(bool enabled) {}
void LibretroHostDisplay::Render()
void LibretroHostDisplay::SetVSync(bool enabled)
{
if (m_display_texture_view_width != m_last_display_width || m_display_texture_view_height != m_last_display_height)
{
retro_game_geometry geom = {};
geom.base_width = m_display_width;
geom.base_height = m_display_height;
geom.aspect_ratio = m_display_pixel_aspect_ratio;
// The libretro frontend controls this.
Log_DevPrintf("Ignoring SetVSync(%u)", BoolToUInt32(enabled));
}
if (!g_retro_environment_callback(RETRO_ENVIRONMENT_SET_GEOMETRY, &geom))
Log_WarningPrint("RETRO_ENVIRONMENT_SET_GEOMETRY failed");
m_last_display_width = m_display_texture_view_width;
m_last_display_height = m_display_texture_view_height;
}
// TODO: padding...
if (m_display_texture_handle)
bool LibretroHostDisplay::Render()
{
if (HasDisplayTexture())
{
const LibretroDisplayTexture* tex = static_cast<const LibretroDisplayTexture*>(m_display_texture_handle);
g_retro_video_refresh_callback(tex->GetData() + m_display_texture_view_y * tex->GetWidth() + m_display_texture_view_x, m_display_texture_view_width, m_display_texture_view_height , tex->GetDataPitch());
g_retro_video_refresh_callback(tex->GetData() + m_display_texture_view_y * tex->GetWidth() +
m_display_texture_view_x,
m_display_texture_view_width, m_display_texture_view_height, tex->GetDataPitch());
}
return true;
}

21
src/duckstation-libretro/libretro_host_display.h
View File

@ -11,7 +11,20 @@ public:
RenderAPI GetRenderAPI() const override;
void* GetRenderDevice() const override;
void* GetRenderContext() const override;
void WindowResized(s32 new_window_width, s32 new_window_height) override;
bool HasRenderDevice() const override;
bool HasRenderSurface() const override;
bool CreateRenderDevice(const WindowInfo& wi, std::string_view adapter_name, bool debug_device) override;
bool InitializeRenderDevice(std::string_view shader_cache_directory, bool debug_device) override;
void DestroyRenderDevice() override;
bool MakeRenderContextCurrent() override;
bool DoneRenderContextCurrent() override;
bool ChangeRenderWindow(const WindowInfo& wi) override;
void ResizeRenderWindow(s32 new_window_width, s32 new_window_height) override;
void DestroyRenderSurface() override;
std::unique_ptr<HostDisplayTexture> CreateTexture(u32 width, u32 height, const void* data, u32 data_stride,
bool dynamic) override;
@ -22,9 +35,5 @@ public:
void SetVSync(bool enabled) override;
void Render() override;
private:
s32 m_last_display_width = -1;
s32 m_last_display_height = -1;
bool Render() override;
};

395
src/duckstation-libretro/libretro_host_interface.cpp
View File

@ -1,16 +1,18 @@
#include "libretro_host_interface.h"
#include "common/assert.h"
#include "common/byte_stream.h"
#include "common/file_system.h"
#include "common/log.h"
#include "common/string_util.h"
#include "core/analog_controller.h"
#include "core/digital_controller.h"
#include "core/game_list.h"
#include "core/gpu.h"
#include "core/system.h"
#include "libretro_audio_stream.h"
#include "libretro_host_display.h"
#include "libretro_opengl_host_display.h"
#include "libretro_settings_interface.h"
#include "opengl_host_display.h"
#include <array>
#include <cstring>
#include <tuple>
@ -19,18 +21,9 @@
Log_SetChannel(LibretroHostInterface);
#ifdef WIN32
#include "d3d11_host_display.h"
#include "libretro_d3d11_host_display.h"
#endif
//////////////////////////////////////////////////////////////////////////
// TODO:
// - Fix up D3D11
// - Save states
// - Expose the rest of the options
// - Memory card and controller settings
// - Better paths for memory cards/BIOS
//////////////////////////////////////////////////////////////////////////
LibretroHostInterface g_libretro_host_interface;
retro_environment_t g_retro_environment_callback;
@ -40,16 +33,48 @@ retro_audio_sample_batch_t g_retro_audio_sample_batch_callback;
retro_input_poll_t g_retro_input_poll_callback;
retro_input_state_t g_retro_input_state_callback;
static retro_log_callback s_libretro_log_callback = {};
static bool s_libretro_log_callback_valid = false;
static const char* GetSaveDirectory()
{
const char* save_directory = nullptr;
if (!g_retro_environment_callback(RETRO_ENVIRONMENT_GET_SAVE_DIRECTORY, &save_directory) || !save_directory)
save_directory = "saves";
return save_directory;
}
static void LibretroLogCallback(void* pUserParam, const char* channelName, const char* functionName, LOGLEVEL level,
const char* message)
{
static constexpr std::array<retro_log_level, LOGLEVEL_COUNT> levels = {
{RETRO_LOG_ERROR, RETRO_LOG_ERROR, RETRO_LOG_WARN, RETRO_LOG_INFO, RETRO_LOG_INFO, RETRO_LOG_INFO, RETRO_LOG_DEBUG,
RETRO_LOG_DEBUG, RETRO_LOG_DEBUG, RETRO_LOG_DEBUG}};
s_libretro_log_callback.log(levels[level], "[%s] %s\n", (level <= LOGLEVEL_PERF) ? functionName : channelName,
message);
}
LibretroHostInterface::LibretroHostInterface() = default;
LibretroHostInterface::~LibretroHostInterface() = default;
void LibretroHostInterface::InitLogging()
{
s_libretro_log_callback_valid =
g_retro_environment_callback(RETRO_ENVIRONMENT_GET_LOG_INTERFACE, &s_libretro_log_callback);
if (s_libretro_log_callback_valid)
Log::RegisterCallback(LibretroLogCallback, nullptr);
}
bool LibretroHostInterface::Initialize()
{
if (!HostInterface::Initialize())
return false;
LoadSettings();
UpdateLogging();
return true;
}
@ -60,11 +85,12 @@ void LibretroHostInterface::Shutdown()
void LibretroHostInterface::ReportError(const char* message)
{
Log_ErrorPrint(message);
AddFormattedOSDMessage(60.0f, "ERROR: %s", message);
}
void LibretroHostInterface::ReportMessage(const char* message)
{
AddOSDMessage(message, 10.0f);
Log_InfoPrint(message);
}
@ -74,8 +100,44 @@ bool LibretroHostInterface::ConfirmMessage(const char* message)
return false;
}
void LibretroHostInterface::GetGameInfo(const char* path, CDImage* image, std::string* code, std::string* title)
{
// Just use the filename for now... we don't have the game list. Unless we can pull this from the frontend somehow?
*title = GameList::GetTitleForPath(path);
code->clear();
}
std::string LibretroHostInterface::GetSharedMemoryCardPath(u32 slot) const
{
return GetUserDirectoryRelativePath("%s/shared_card_%d.mcd", GetSaveDirectory(), slot + 1);
}
std::string LibretroHostInterface::GetGameMemoryCardPath(const char* game_code, u32 slot) const
{
return GetUserDirectoryRelativePath("%s/%s_%d.mcd", GetSaveDirectory(), game_code, slot + 1);
}
void LibretroHostInterface::AddOSDMessage(std::string message, float duration /*= 2.0f*/)
{
retro_message msg = {};
msg.msg = message.c_str();
msg.frames = static_cast<u32>(duration * (m_system ? m_system->GetThrottleFrequency() : 60.0f));
g_retro_environment_callback(RETRO_ENVIRONMENT_SET_MESSAGE, &msg);
}
void LibretroHostInterface::retro_get_system_av_info(struct retro_system_av_info* info)
{
const bool use_resolution_scale = (m_settings.gpu_renderer != GPURenderer::Software);
GetSystemAVInfo(info, use_resolution_scale);
Log_InfoPrintf("base = %ux%u, max = %ux%u, aspect ratio = %.2f, fps = %.2f", info->geometry.base_width,
info->geometry.base_height, info->geometry.max_width, info->geometry.max_height,
info->geometry.aspect_ratio, info->timing.fps);
}
void LibretroHostInterface::GetSystemAVInfo(struct retro_system_av_info* info, bool use_resolution_scale)
{
const u32 resolution_scale = use_resolution_scale ? m_settings.gpu_resolution_scale : 1u;
Assert(m_system);
std::memset(info, 0, sizeof(*info));
@ -93,22 +155,66 @@ void LibretroHostInterface::retro_get_system_av_info(struct retro_system_av_info
info->geometry.base_height = 576;
}
info->geometry.max_width = 1024;
info->geometry.max_height = 512;
info->geometry.max_width = 1024 * resolution_scale;
info->geometry.max_height = 512 * resolution_scale;
info->timing.fps = m_system->GetThrottleFrequency();
info->timing.sample_rate = static_cast<double>(AUDIO_SAMPLE_RATE);
}
void LibretroHostInterface::UpdateSystemAVInfo(bool use_resolution_scale)
{
struct retro_system_av_info avi;
GetSystemAVInfo(&avi, use_resolution_scale);
Log_InfoPrintf("base = %ux%u, max = %ux%u, aspect ratio = %.2f, fps = %.2f", avi.geometry.base_width,
avi.geometry.base_height, avi.geometry.max_width, avi.geometry.max_height, avi.geometry.aspect_ratio,
avi.timing.fps);
if (!g_retro_environment_callback(RETRO_ENVIRONMENT_SET_SYSTEM_AV_INFO, &avi))
Log_ErrorPrintf("Failed to update system AV info on resolution change");
}
void LibretroHostInterface::UpdateGeometry()
{
struct retro_system_av_info avi;
const bool use_resolution_scale = (m_settings.gpu_renderer != GPURenderer::Software);
GetSystemAVInfo(&avi, use_resolution_scale);
Log_InfoPrintf("base = %ux%u, max = %ux%u, aspect ratio = %.2f", avi.geometry.base_width, avi.geometry.base_height,
avi.geometry.max_width, avi.geometry.max_height, avi.geometry.aspect_ratio);
if (!g_retro_environment_callback(RETRO_ENVIRONMENT_SET_GEOMETRY, &avi.geometry))
Log_WarningPrint("RETRO_ENVIRONMENT_SET_GEOMETRY failed");
}
void LibretroHostInterface::UpdateLogging()
{
Log::SetFilterLevel(m_settings.log_level);
if (s_libretro_log_callback_valid)
Log::SetConsoleOutputParams(false);
else
Log::SetConsoleOutputParams(true, nullptr, m_settings.log_level);
}
bool LibretroHostInterface::retro_load_game(const struct retro_game_info* game)
{
SystemBootParameters bp;
bp.filename = game->path;
bp.force_software_renderer = !m_hw_render_callback_valid;
if (!BootSystem(bp))
return false;
RequestHardwareRendererContext();
if (m_settings.gpu_renderer != GPURenderer::Software)
{
if (!m_hw_render_callback_valid)
RequestHardwareRendererContext();
else
SwitchToHardwareRenderer();
}
return true;
}
@ -116,6 +222,9 @@ void LibretroHostInterface::retro_run_frame()
{
Assert(m_system);
if (HasCoreVariablesChanged())
UpdateSettings();
UpdateControllers();
m_system->GetGPU()->RestoreGraphicsAPIState();
@ -132,17 +241,46 @@ unsigned LibretroHostInterface::retro_get_region()
return m_system->IsPALRegion() ? RETRO_REGION_PAL : RETRO_REGION_NTSC;
}
size_t LibretroHostInterface::retro_serialize_size()
{
return System::MAX_SAVE_STATE_SIZE;
}
bool LibretroHostInterface::retro_serialize(void* data, size_t size)
{
std::unique_ptr<ByteStream> stream = ByteStream_CreateMemoryStream(data, static_cast<u32>(size));
if (!m_system->SaveState(stream.get(), 0))
{
Log_ErrorPrintf("Failed to save state to memory stream");
return false;
}
return true;
}
bool LibretroHostInterface::retro_unserialize(const void* data, size_t size)
{
std::unique_ptr<ByteStream> stream = ByteStream_CreateReadOnlyMemoryStream(data, static_cast<u32>(size));
if (!m_system->LoadState(stream.get()))
{
Log_ErrorPrintf("Failed to load save state from memory stream");
return false;
}
return true;
}
bool LibretroHostInterface::AcquireHostDisplay()
{
// start in software mode, switch to hardware later
m_display = new LibretroHostDisplay();
m_display = std::make_unique<LibretroHostDisplay>();
return true;
}
void LibretroHostInterface::ReleaseHostDisplay()
{
delete m_display;
m_display = nullptr;
m_display->DestroyRenderDevice();
m_display.reset();
}
std::unique_ptr<AudioStream> LibretroHostInterface::CreateAudioStream(AudioBackend backend)
@ -150,7 +288,13 @@ std::unique_ptr<AudioStream> LibretroHostInterface::CreateAudioStream(AudioBacke
return std::make_unique<LibretroAudioStream>();
}
static std::array<retro_core_option_definition, 14> s_option_definitions = {{
void LibretroHostInterface::OnSystemDestroyed()
{
HostInterface::OnSystemDestroyed();
m_using_hardware_renderer = false;
}
static std::array<retro_core_option_definition, 20> s_option_definitions = {{
{"Console.Region",
"Console Region",
"Determines which region/hardware to emulate. Auto-Detect will use the region of the disc inserted.",
@ -188,7 +332,12 @@ static std::array<retro_core_option_definition, 14> s_option_definitions = {{
#endif
{"OpenGL", "Hardware (OpenGL)"},
{"Software", "Software"}},
"OpenGL"},
#ifdef WIN32
"D3D11"
#else
"OpenGL"
#endif
},
{"GPU.ResolutionScale",
"Rendering Resolution Scale",
"Scales internal rendering resolution by the specified multiplier. Larger values are slower. Some games require "
@ -234,8 +383,63 @@ static std::array<retro_core_option_definition, 14> s_option_definitions = {{
{"Display.AspectRatio",
"Aspect Ratio",
"Sets the core-provided aspect ratio.",
{{"4:3", "4:3"}, {"16:9", "16:9"}, {"1:1", "1:1"}},
{{"4:3", "4:3"}, {"16:9", "16:9"}, {"2:1", "2:1 (VRAM 1:1)"}, {"1:1", "1:1"}},
"4:3"},
{"MemoryCards.LoadFromSaveStates",
"Load Memory Cards From Save States",
"Sets whether the contents of memory cards will be loaded when a save state is loaded.",
{{"true", "Enabled"}, {"false", "Disabled"}},
"false"},
{"MemoryCards.Card1Type",
"Memory Card 1 Type",
"Sets the type of memory card for Slot 1.",
{{"None", "No Memory Card"},
{"Shared", "Shared Between All Games"},
{"PerGame", "Separate Card Per Game (Game Code)"},
{"PerGameTitle", "Separate Card Per Game (Game Title)"}},
"PerGameTitle"},
{"MemoryCards.Card2Type",
"Memory Card 2 Type",
"Sets the type of memory card for Slot 2.",
{{"None", "No Memory Card"},
{"Shared", "Shared Between All Games"},
{"PerGame", "Separate Card Per Game (Game Code)"},
{"PerGameTitle", "Separate Card Per Game (Game Title)"}},
"None"},
{"Controller1.Type",
"Controller 1 Type",
"Sets the type of controller for Slot 1.",
{{"None", "None"},
{"DigitalController", "Digital Controller"},
{"AnalogController", "Analog Controller (DualShock)"},
{"NamcoGunCon", "Namco GunCon"},
{"PlayStationMouse", "PlayStation Mouse"},
{"NeGcon", "NeGcon"}},
"DigitalController"},
{"Controller2.Type",
"Controller 2 Type",
"Sets the type of controller for Slot 2.",
{{"None", "None"},
{"DigitalController", "Digital Controller"},
{"AnalogController", "Analog Controller (DualShock)"},
{"NamcoGunCon", "Namco GunCon"},
{"PlayStationMouse", "PlayStation Mouse"},
{"NeGcon", "NeGcon"}},
"None"},
{"Logging.LogLevel",
"Log Level",
"Sets the level of information logged by the core.",
{{"None", "None"},
{"Error", "Error"},
{"Warning", "Warning"},
{"Perf", "Performance"},
{"Success", "Success"},
{"Info", "Information"},
{"Dev", "Developer"},
{"Profile", "Profile"},
{"Debug", "Debug"},
{"Trace", "Trace"}},
"Info"},
{},
}};
@ -252,39 +456,78 @@ bool LibretroHostInterface::SetCoreOptions()
return false;
}
bool LibretroHostInterface::HasCoreVariablesChanged()
{
bool changed = false;
return (g_retro_environment_callback(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &changed) && changed);
}
void LibretroHostInterface::LoadSettings()
{
LibretroSettingsInterface si;
m_settings.Load(si);
// Overrides
m_settings.log_level = LOGLEVEL_DEV;
m_settings.log_to_console = true;
// start in software, switch later
m_settings.gpu_renderer = GPURenderer::Software;
// Assume BIOS files are located in system directory.
const char* system_directory = nullptr;
if (!g_retro_environment_callback(RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY, &system_directory) || !system_directory)
system_directory = "bios";
m_settings.bios_path =
StringUtil::StdStringFromFormat("%s%cscph1001.bin", system_directory, FS_OSPATH_SEPERATOR_CHARACTER);
// TODOs - expose via config
m_settings.controller_types[0] = ControllerType::DigitalController;
m_settings.controller_types[1] = ControllerType::None;
m_settings.memory_card_types[0] = MemoryCardType::None;
m_settings.memory_card_types[1] = MemoryCardType::None;
}
void LibretroHostInterface::UpdateSettings()
{
Settings old_settings(std::move(m_settings));
LoadSettings();
if (m_settings.gpu_resolution_scale != old_settings.gpu_resolution_scale &&
m_settings.gpu_renderer != GPURenderer::Software)
{
ReportMessage("Resolution changed, updating system AV info...");
// this will probably recreate the device... so save the state first by switching to software
if (m_using_hardware_renderer)
SwitchToSoftwareRenderer();
UpdateSystemAVInfo(true);
if (!m_hw_render_callback_valid)
RequestHardwareRendererContext();
else if (!m_using_hardware_renderer)
SwitchToHardwareRenderer();
// Don't let the base class mess with the GPU.
old_settings.gpu_resolution_scale = m_settings.gpu_resolution_scale;
}
if (m_settings.gpu_renderer != old_settings.gpu_renderer)
{
ReportFormattedMessage("Switching to %s renderer...", Settings::GetRendererDisplayName(m_settings.gpu_renderer));
if (m_using_hardware_renderer)
SwitchToSoftwareRenderer();
if (m_settings.gpu_renderer != GPURenderer::Software)
RequestHardwareRendererContext();
// Don't let the base class recreate the GPU or system.
old_settings.gpu_renderer = m_settings.gpu_renderer;
}
CheckForSettingsChanges(old_settings);
}
void LibretroHostInterface::CheckForSettingsChanges(const Settings& old_settings)
{
HostInterface::CheckForSettingsChanges(old_settings);
if (m_settings.display_aspect_ratio != old_settings.display_aspect_ratio)
UpdateGeometry();
if (m_settings.log_level != old_settings.log_level)
UpdateLogging();
}
void LibretroHostInterface::UpdateControllers()
{
g_retro_input_poll_callback();
@ -339,26 +582,42 @@ void LibretroHostInterface::UpdateControllersDigitalController(u32 index)
bool LibretroHostInterface::RequestHardwareRendererContext()
{
GPURenderer renderer = Settings::DEFAULT_GPU_RENDERER;
retro_variable renderer_variable{"GPU.Renderer", "OpenGL"};
retro_variable renderer_variable{"GPU.Renderer", Settings::GetRendererName(Settings::DEFAULT_GPU_RENDERER)};
if (g_retro_environment_callback(RETRO_ENVIRONMENT_GET_VARIABLE, &renderer_variable) && renderer_variable.value)
renderer = Settings::ParseRendererName(renderer_variable.value).value_or(Settings::DEFAULT_GPU_RENDERER);
Log_InfoPrintf("Renderer = %s", Settings::GetRendererName(renderer));
if (renderer == GPURenderer::Software)
return true;
{
m_hw_render_callback_valid = false;
return false;
}
Log_InfoPrintf("Requesting hardware renderer context for %s", Settings::GetRendererName(renderer));
m_hw_render_callback = {};
m_hw_render_callback.context_reset = HardwareRendererContextReset;
m_hw_render_callback.context_destroy = HardwareRendererContextDestroy;
switch (renderer)
{
#ifdef WIN32
if (renderer == GPURenderer::HardwareD3D11 && false)
return D3D11HostDisplay::RequestHardwareRendererContext(&m_hw_render_callback);
case GPURenderer::HardwareD3D11:
m_hw_render_callback_valid = LibretroD3D11HostDisplay::RequestHardwareRendererContext(&m_hw_render_callback);
break;
#endif
if (renderer == GPURenderer::HardwareOpenGL)
return OpenGLHostDisplay::RequestHardwareRendererContext(&m_hw_render_callback);
case GPURenderer::HardwareOpenGL:
m_hw_render_callback_valid = LibretroOpenGLHostDisplay::RequestHardwareRendererContext(&m_hw_render_callback);
break;
return false;
default:
Log_ErrorPrintf("Unhandled renderer %s", Settings::GetRendererName(renderer));
m_hw_render_callback_valid = false;
break;
}
return m_hw_render_callback_valid;
}
void LibretroHostInterface::HardwareRendererContextReset()
@ -366,23 +625,25 @@ void LibretroHostInterface::HardwareRendererContextReset()
Log_InfoPrintf("Hardware context reset, type = %u",
static_cast<unsigned>(g_libretro_host_interface.m_hw_render_callback.context_type));
std::unique_ptr<HostDisplay> new_display = nullptr;
GPURenderer new_renderer = GPURenderer::Software;
g_libretro_host_interface.m_hw_render_callback_valid = true;
g_libretro_host_interface.SwitchToHardwareRenderer();
}
void LibretroHostInterface::SwitchToHardwareRenderer()
{
std::unique_ptr<HostDisplay> display = nullptr;
switch (g_libretro_host_interface.m_hw_render_callback.context_type)
{
case RETRO_HW_CONTEXT_OPENGL:
case RETRO_HW_CONTEXT_OPENGL_CORE:
case RETRO_HW_CONTEXT_OPENGLES3:
case RETRO_HW_CONTEXT_OPENGLES_VERSION:
new_display = OpenGLHostDisplay::Create(g_libretro_host_interface.m_settings.gpu_use_debug_device);
new_renderer = GPURenderer::HardwareOpenGL;
display = std::make_unique<LibretroOpenGLHostDisplay>();
break;
#ifdef WIN32
case RETRO_HW_CONTEXT_DIRECT3D:
new_display = D3D11HostDisplay::Create(g_libretro_host_interface.m_settings.gpu_use_debug_device);
new_renderer = GPURenderer::HardwareD3D11;
display = std::make_unique<LibretroD3D11HostDisplay>();
break;
#endif
@ -390,25 +651,43 @@ void LibretroHostInterface::HardwareRendererContextReset()
break;
}
if (!new_display)
struct retro_system_av_info avi;
g_libretro_host_interface.GetSystemAVInfo(&avi, true);
WindowInfo wi;
wi.type = WindowInfo::Type::Libretro;
wi.display_connection = &g_libretro_host_interface.m_hw_render_callback;
wi.surface_width = avi.geometry.base_width;
wi.surface_height = avi.geometry.base_height;
if (!display || !display->CreateRenderDevice(wi, {}, g_libretro_host_interface.m_settings.gpu_use_debug_device))
{
Log_ErrorPrintf("Failed to create hardware host display");
return;
}
HostDisplay* old_display = g_libretro_host_interface.m_display;
g_libretro_host_interface.m_display = new_display.release();
g_libretro_host_interface.m_settings.gpu_renderer = new_renderer;
g_libretro_host_interface.m_system->RecreateGPU(new_renderer);
delete old_display;
std::swap(display, g_libretro_host_interface.m_display);
g_libretro_host_interface.m_system->RecreateGPU(g_libretro_host_interface.m_settings.gpu_renderer);
display->DestroyRenderDevice();
m_using_hardware_renderer = true;
}
void LibretroHostInterface::HardwareRendererContextDestroy()
{
g_libretro_host_interface.m_hw_render_callback_valid = false;
// switch back to software
HostDisplay* old_display = g_libretro_host_interface.m_display;
g_libretro_host_interface.m_display = new LibretroHostDisplay();
g_libretro_host_interface.m_settings.gpu_renderer = GPURenderer::Software;
g_libretro_host_interface.m_system->RecreateGPU(GPURenderer::Software);
delete old_display;
if (g_libretro_host_interface.m_using_hardware_renderer)
{
Log_InfoPrintf("Lost hardware renderer context, switching to software renderer");
g_libretro_host_interface.SwitchToSoftwareRenderer();
}
}
void LibretroHostInterface::SwitchToSoftwareRenderer()
{
std::unique_ptr<HostDisplay> display = std::make_unique<LibretroHostDisplay>();
std::swap(display, g_libretro_host_interface.m_display);
g_libretro_host_interface.m_system->RecreateGPU(GPURenderer::Software);
display->DestroyRenderDevice();
m_using_hardware_renderer = false;
}

20
src/duckstation-libretro/libretro_host_interface.h
View File

@ -9,7 +9,9 @@ public:
LibretroHostInterface();
~LibretroHostInterface() override;
static void InitLogging();
static bool SetCoreOptions();
static bool HasCoreVariablesChanged();
bool Initialize() override;
void Shutdown() override;
@ -17,33 +19,49 @@ public:
void ReportError(const char* message) override;
void ReportMessage(const char* message) override;
bool ConfirmMessage(const char* message) override;
void AddOSDMessage(std::string message, float duration = 2.0f) override;
const retro_hw_render_callback& GetHWRenderCallback() const { return m_hw_render_callback; }
void GetGameInfo(const char* path, CDImage* image, std::string* code, std::string* title) override;
std::string GetSharedMemoryCardPath(u32 slot) const override;
std::string GetGameMemoryCardPath(const char* game_code, u32 slot) const override;
// Called by frontend
void retro_get_system_av_info(struct retro_system_av_info* info);
bool retro_load_game(const struct retro_game_info* game);
void retro_run_frame();
unsigned retro_get_region();
size_t retro_serialize_size();
bool retro_serialize(void* data, size_t size);
bool retro_unserialize(const void* data, size_t size);
protected:
bool AcquireHostDisplay() override;
void ReleaseHostDisplay() override;
std::unique_ptr<AudioStream> CreateAudioStream(AudioBackend backend) override;
void OnSystemDestroyed() override;
void CheckForSettingsChanges(const Settings& old_settings) override;
private:
void LoadSettings();
void UpdateSettings();
void UpdateControllers();
void UpdateControllersDigitalController(u32 index);
void GetSystemAVInfo(struct retro_system_av_info* info, bool use_resolution_scale);
void UpdateSystemAVInfo(bool use_resolution_scale);
void UpdateGeometry();
void UpdateLogging();
// Hardware renderer setup.
bool RequestHardwareRendererContext();
void SwitchToHardwareRenderer();
void SwitchToSoftwareRenderer();
static void HardwareRendererContextReset();
static void HardwareRendererContextDestroy();
retro_hw_render_callback m_hw_render_callback = {};
bool m_hw_render_callback_valid = false;
bool m_using_hardware_renderer = false;
};
extern LibretroHostInterface g_libretro_host_interface;

143
src/duckstation-libretro/libretro_opengl_host_display.cpp Normal file
View File

@ -0,0 +1,143 @@
#include "libretro_opengl_host_display.h"
#include "common/assert.h"
#include "common/log.h"
#include "core/gpu.h"
#include "libretro.h"
#include "libretro_host_interface.h"
#include <array>
#include <tuple>
Log_SetChannel(LibretroOpenGLHostDisplay);
LibretroOpenGLHostDisplay::LibretroOpenGLHostDisplay() = default;
LibretroOpenGLHostDisplay::~LibretroOpenGLHostDisplay() = default;
HostDisplay::RenderAPI LibretroOpenGLHostDisplay::GetRenderAPI() const
{
return m_is_gles ? HostDisplay::RenderAPI::OpenGLES : HostDisplay::RenderAPI::OpenGL;
}
void LibretroOpenGLHostDisplay::SetVSync(bool enabled)
{
// The libretro frontend controls this.
Log_DevPrintf("Ignoring SetVSync(%u)", BoolToUInt32(enabled));
}
bool LibretroOpenGLHostDisplay::RequestHardwareRendererContext(retro_hw_render_callback* cb)
{
// Prefer a desktop OpenGL context where possible. If we can't get this, try OpenGL ES.
static constexpr std::array<std::tuple<u32, u32>, 11> desktop_versions_to_try = {
{/*{4, 6}, {4, 5}, {4, 4}, {4, 3}, {4, 2}, {4, 1}, {4, 0}, {3, 3}, {3, 2}, */ {3, 1}, {3, 0}}};
static constexpr std::array<std::tuple<u32, u32>, 4> es_versions_to_try = {{{3, 2}, {3, 1}, {3, 0}}};
cb->cache_context = true;
cb->bottom_left_origin = true;
for (const auto& [major, minor] : desktop_versions_to_try)
{
if (major > 3 || (major == 3 && minor >= 2))
{
cb->context_type = RETRO_HW_CONTEXT_OPENGL_CORE;
cb->version_major = major;
cb->version_minor = minor;
}
else
{
cb->context_type = RETRO_HW_CONTEXT_OPENGL;
cb->version_major = 0;
cb->version_minor = 0;
}
if (g_retro_environment_callback(RETRO_ENVIRONMENT_SET_HW_RENDER, cb))
return true;
}
for (const auto& [major, minor] : es_versions_to_try)
{
if (major >= 3 && minor > 0)
{
cb->context_type = RETRO_HW_CONTEXT_OPENGLES_VERSION;
cb->version_major = major;
cb->version_minor = minor;
}
else
{
cb->context_type = RETRO_HW_CONTEXT_OPENGLES3;
cb->version_major = 0;
cb->version_minor = 0;
}
if (g_retro_environment_callback(RETRO_ENVIRONMENT_SET_HW_RENDER, cb))
return true;
}
Log_ErrorPrint("Failed to set any GL HW renderer");
return false;
}
bool LibretroOpenGLHostDisplay::CreateRenderDevice(const WindowInfo& wi, std::string_view adapter_name,
bool debug_device)
{
Assert(wi.type == WindowInfo::Type::Libretro);
// gross - but can't do much because of the GLADloadproc below.
static retro_hw_render_callback* cb;
cb = static_cast<retro_hw_render_callback*>(wi.display_connection);
m_window_info = wi;
m_is_gles = (cb->context_type == RETRO_HW_CONTEXT_OPENGLES3 || cb->context_type == RETRO_HW_CONTEXT_OPENGLES_VERSION);
const GLADloadproc get_proc_address = [](const char* sym) -> void* {
return reinterpret_cast<void*>(cb->get_proc_address(sym));
};
// Load GLAD.
const auto load_result = m_is_gles ? gladLoadGLES2Loader(get_proc_address) : gladLoadGLLoader(get_proc_address);
if (!load_result)
{
Log_ErrorPrintf("Failed to load GL functions");
return false;
}
return CreateResources();
}
void LibretroOpenGLHostDisplay::DestroyRenderDevice()
{
DestroyResources();
}
void LibretroOpenGLHostDisplay::ResizeRenderWindow(s32 new_window_width, s32 new_window_height)
{
m_window_info.surface_width = static_cast<u32>(new_window_width);
m_window_info.surface_height = static_cast<u32>(new_window_height);
}
bool LibretroOpenGLHostDisplay::Render()
{
const GLuint fbo = static_cast<GLuint>(
static_cast<retro_hw_render_callback*>(m_window_info.display_connection)->get_current_framebuffer());
glDisable(GL_SCISSOR_TEST);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glClear(GL_COLOR_BUFFER_BIT);
if (HasDisplayTexture())
{
RenderDisplay(0, 0, m_display_texture_width, m_display_texture_height, m_display_texture_handle,
m_display_texture_width, m_display_texture_height, m_display_texture_view_x, m_display_texture_view_y,
m_display_texture_view_width, m_display_texture_view_height, m_display_linear_filtering);
}
if (HasSoftwareCursor())
{
const auto [left, top, width, height] = CalculateSoftwareCursorDrawRect();
RenderSoftwareCursor(left, top, width, height, m_cursor_texture.get());
}
g_retro_video_refresh_callback(RETRO_HW_FRAME_BUFFER_VALID, m_display_texture_width, m_display_texture_height, 0);
GL::Program::ResetLastProgram();
return true;
}

31
src/duckstation-libretro/libretro_opengl_host_display.h Normal file
View File

@ -0,0 +1,31 @@
#pragma once
#include "common/gl/program.h"
#include "common/gl/texture.h"
#include "core/host_display.h"
#include "frontend-common/opengl_host_display.h"
#include "libretro.h"
#include <string>
#include <memory>
class LibretroOpenGLHostDisplay final : public FrontendCommon::OpenGLHostDisplay
{
public:
LibretroOpenGLHostDisplay();
~LibretroOpenGLHostDisplay();
static bool RequestHardwareRendererContext(retro_hw_render_callback* cb);
RenderAPI GetRenderAPI() const override;
bool CreateRenderDevice(const WindowInfo& wi, std::string_view adapter_name, bool debug_device) override;
void DestroyRenderDevice();
void ResizeRenderWindow(s32 new_window_width, s32 new_window_height) override;
void SetVSync(bool enabled) override;
bool Render() override;
private:
bool m_is_gles = false;
};

17
src/duckstation-libretro/main.cpp
View File

@ -11,9 +11,8 @@ RETRO_API unsigned retro_api_version(void)
RETRO_API void retro_init(void)
{
Log::SetConsoleOutputParams(true);
Log::SetDebugOutputParams(true);
Log_InfoPrintf("retro_init()");
// default log to stdout until we get an interface
Log::SetConsoleOutputParams(true, nullptr, LOGLEVEL_INFO);
if (!g_libretro_host_interface.Initialize())
Panic("Host interface initialization failed");
@ -21,7 +20,6 @@ RETRO_API void retro_init(void)
RETRO_API void retro_deinit(void)
{
Log_InfoPrintf("retro_deinit()");
g_libretro_host_interface.Shutdown();
}
@ -66,20 +64,17 @@ RETRO_API void retro_run(void)
RETRO_API size_t retro_serialize_size(void)
{
Log_ErrorPrintf("retro_serialize_size()");
return 0;
return g_libretro_host_interface.retro_serialize_size();
}
RETRO_API bool retro_serialize(void* data, size_t size)
{
Log_ErrorPrintf("retro_serialize()");
return false;
return g_libretro_host_interface.retro_serialize(data, size);
}
RETRO_API bool retro_unserialize(const void* data, size_t size)
{
Log_ErrorPrintf("retro_unserialize()");
return false;
return g_libretro_host_interface.retro_unserialize(data, size);
}
RETRO_API void retro_cheat_reset(void)
@ -106,7 +101,6 @@ RETRO_API bool retro_load_game_special(unsigned game_type, const struct retro_ga
RETRO_API void retro_unload_game(void)
{
Log_ErrorPrintf("retro_unload_game()");
g_libretro_host_interface.DestroySystem();
}
@ -133,6 +127,7 @@ RETRO_API void retro_set_environment(retro_environment_t f)
if (!core_options_set)
{
core_options_set = true;
g_libretro_host_interface.InitLogging();
if (!g_libretro_host_interface.SetCoreOptions())
Log_WarningPrintf("Failed to set core options, settings will not be changeable.");
}

385
src/duckstation-libretro/opengl_host_display.cpp
View File

@ -1,385 +0,0 @@
#include "opengl_host_display.h"
#include "common/assert.h"
#include "common/log.h"
#include "libretro.h"
#include "libretro_host_interface.h"
#include <array>
#include <tuple>
Log_SetChannel(OpenGLHostDisplay);
class OpenGLDisplayWidgetTexture : public HostDisplayTexture
{
public:
OpenGLDisplayWidgetTexture(GLuint id, u32 width, u32 height) : m_id(id), m_width(width), m_height(height) {}
~OpenGLDisplayWidgetTexture() override { glDeleteTextures(1, &m_id); }
void* GetHandle() const override { return reinterpret_cast<void*>(static_cast<uintptr_t>(m_id)); }
u32 GetWidth() const override { return m_width; }
u32 GetHeight() const override { return m_height; }
GLuint GetGLID() const { return m_id; }
static std::unique_ptr<OpenGLDisplayWidgetTexture> Create(u32 width, u32 height, const void* initial_data,
u32 initial_data_stride)
{
GLuint id;
glGenTextures(1, &id);
GLint old_texture_binding = 0;
glGetIntegerv(GL_TEXTURE_BINDING_2D, &old_texture_binding);
// TODO: Set pack width
Assert(!initial_data || initial_data_stride == (width * sizeof(u32)));
glBindTexture(GL_TEXTURE_2D, id);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, initial_data);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 1);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glBindTexture(GL_TEXTURE_2D, id);
return std::make_unique<OpenGLDisplayWidgetTexture>(id, width, height);
}
private:
GLuint m_id;
u32 m_width;
u32 m_height;
};
OpenGLHostDisplay::OpenGLHostDisplay(bool is_gles) : m_is_gles(is_gles) {}
OpenGLHostDisplay::~OpenGLHostDisplay()
{
if (m_display_vao != 0)
glDeleteVertexArrays(1, &m_display_vao);
if (m_display_linear_sampler != 0)
glDeleteSamplers(1, &m_display_linear_sampler);
if (m_display_nearest_sampler != 0)
glDeleteSamplers(1, &m_display_nearest_sampler);
m_display_program.Destroy();
}
HostDisplay::RenderAPI OpenGLHostDisplay::GetRenderAPI() const
{
return m_is_gles ? HostDisplay::RenderAPI::OpenGLES : HostDisplay::RenderAPI::OpenGL;
}
void* OpenGLHostDisplay::GetRenderDevice() const
{
return nullptr;
}
void* OpenGLHostDisplay::GetRenderContext() const
{
return nullptr;
}
std::unique_ptr<HostDisplayTexture> OpenGLHostDisplay::CreateTexture(u32 width, u32 height, const void* data,
u32 data_stride, bool dynamic)
{
return OpenGLDisplayWidgetTexture::Create(width, height, data, data_stride);
}
void OpenGLHostDisplay::UpdateTexture(HostDisplayTexture* texture, u32 x, u32 y, u32 width, u32 height,
const void* data, u32 data_stride)
{
OpenGLDisplayWidgetTexture* tex = static_cast<OpenGLDisplayWidgetTexture*>(texture);
Assert((data_stride % sizeof(u32)) == 0);
GLint old_texture_binding = 0, old_alignment = 0, old_row_length = 0;
glGetIntegerv(GL_TEXTURE_BINDING_2D, &old_texture_binding);
glGetIntegerv(GL_UNPACK_ALIGNMENT, &old_alignment);
glGetIntegerv(GL_UNPACK_ROW_LENGTH, &old_row_length);
glBindTexture(GL_TEXTURE_2D, tex->GetGLID());
glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
glPixelStorei(GL_UNPACK_ROW_LENGTH, data_stride / sizeof(u32));
glTexSubImage2D(GL_TEXTURE_2D, 0, x, y, width, height, GL_RGBA, GL_UNSIGNED_BYTE, data);
glPixelStorei(GL_UNPACK_ALIGNMENT, old_alignment);
glPixelStorei(GL_UNPACK_ROW_LENGTH, old_row_length);
glBindTexture(GL_TEXTURE_2D, old_texture_binding);
}
bool OpenGLHostDisplay::DownloadTexture(const void* texture_handle, u32 x, u32 y, u32 width, u32 height, void* out_data,
u32 out_data_stride)
{
GLint old_alignment = 0, old_row_length = 0;
glGetIntegerv(GL_PACK_ALIGNMENT, &old_alignment);
glGetIntegerv(GL_PACK_ROW_LENGTH, &old_row_length);
glPixelStorei(GL_PACK_ALIGNMENT, sizeof(u32));
glPixelStorei(GL_PACK_ROW_LENGTH, out_data_stride / sizeof(u32));
const GLuint texture = static_cast<GLuint>(reinterpret_cast<uintptr_t>(texture_handle));
GL::Texture::GetTextureSubImage(texture, 0, x, y, 0, width, height, 1, GL_RGBA, GL_UNSIGNED_BYTE,
height * out_data_stride, out_data);
glPixelStorei(GL_PACK_ALIGNMENT, old_alignment);
glPixelStorei(GL_PACK_ROW_LENGTH, old_row_length);
return true;
}
void OpenGLHostDisplay::SetVSync(bool enabled)
{
// TODO
}
const char* OpenGLHostDisplay::GetGLSLVersionString() const
{
if (m_is_gles)
{
if (GLAD_GL_ES_VERSION_3_0)
return "#version 300 es";
else
return "#version 100";
}
else
{
if (GLAD_GL_VERSION_3_3)
return "#version 330";
else
return "#version 130";
}
}
std::string OpenGLHostDisplay::GetGLSLVersionHeader() const
{
std::string header = GetGLSLVersionString();
header += "\n\n";
if (m_is_gles)
{
header += "precision highp float;\n";
header += "precision highp int;\n\n";
}
return header;
}
static void APIENTRY GLDebugCallback(GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length,
const GLchar* message, const void* userParam)
{
switch (severity)
{
case GL_DEBUG_SEVERITY_HIGH_KHR:
Log_ErrorPrintf(message);
break;
case GL_DEBUG_SEVERITY_MEDIUM_KHR:
Log_WarningPrint(message);
break;
case GL_DEBUG_SEVERITY_LOW_KHR:
Log_InfoPrintf(message);
break;
case GL_DEBUG_SEVERITY_NOTIFICATION:
// Log_DebugPrint(message);
break;
}
}
bool OpenGLHostDisplay::RequestHardwareRendererContext(retro_hw_render_callback* cb)
{
// Prefer a desktop OpenGL context where possible. If we can't get this, try OpenGL ES.
static constexpr std::array<std::tuple<u32, u32>, 11> desktop_versions_to_try = {
{/*{4, 6}, {4, 5}, {4, 4}, {4, 3}, {4, 2}, {4, 1}, {4, 0}, {3, 3}, {3, 2}, */ {3, 1}, {3, 0}}};
static constexpr std::array<std::tuple<u32, u32>, 4> es_versions_to_try = {{{3, 2}, {3, 1}, {3, 0}}};
cb->cache_context = true;
cb->bottom_left_origin = true;
for (const auto& [major, minor] : desktop_versions_to_try)
{
if (major > 3 || (major == 3 && minor >= 2))
{
cb->context_type = RETRO_HW_CONTEXT_OPENGL_CORE;
cb->version_major = major;
cb->version_minor = minor;
}
else
{
cb->context_type = RETRO_HW_CONTEXT_OPENGL;
cb->version_major = 0;
cb->version_minor = 0;
}
if (g_retro_environment_callback(RETRO_ENVIRONMENT_SET_HW_RENDER, cb))
return true;
}
for (const auto& [major, minor] : es_versions_to_try)
{
if (major >= 3 && minor > 0)
{
cb->context_type = RETRO_HW_CONTEXT_OPENGLES_VERSION;
cb->version_major = major;
cb->version_minor = minor;
}
else
{
cb->context_type = RETRO_HW_CONTEXT_OPENGLES3;
cb->version_major = 0;
cb->version_minor = 0;
}
if (g_retro_environment_callback(RETRO_ENVIRONMENT_SET_HW_RENDER, cb))
return true;
}
Log_ErrorPrint("Failed to set any GL HW renderer");
return false;
}
std::unique_ptr<HostDisplay> OpenGLHostDisplay::Create(bool debug_device)
{
const retro_hw_context_type context_type = g_libretro_host_interface.GetHWRenderCallback().context_type;
const GLADloadproc get_proc_address = [](const char* sym) -> void* {
return reinterpret_cast<void*>(g_libretro_host_interface.GetHWRenderCallback().get_proc_address(sym));
};
const bool is_gles =
(context_type == RETRO_HW_CONTEXT_OPENGLES3 || context_type == RETRO_HW_CONTEXT_OPENGLES_VERSION);
// Load GLAD.
const auto load_result = is_gles ? gladLoadGLES2Loader(get_proc_address) : gladLoadGLLoader(get_proc_address);
if (!load_result)
{
Log_ErrorPrintf("Failed to load GL functions");
return nullptr;
}
#if 0
// Disabled until we can turn it off as well
if (debug_device && GLAD_GL_KHR_debug)
{
glad_glDebugMessageCallbackKHR(GLDebugCallback, nullptr);
glEnable(GL_DEBUG_OUTPUT);
glEnable(GL_DEBUG_OUTPUT_SYNCHRONOUS);
}
#endif
std::unique_ptr<OpenGLHostDisplay> display = std::make_unique<OpenGLHostDisplay>(is_gles);
if (!display->CreateGLResources())
{
Log_ErrorPrint("Failed to create GL resources");
return nullptr;
}
return display;
}
bool OpenGLHostDisplay::CreateGLResources()
{
static constexpr char fullscreen_quad_vertex_shader[] = R"(
uniform vec4 u_src_rect;
out vec2 v_tex0;
void main()
{
vec2 pos = vec2(float((gl_VertexID << 1) & 2), float(gl_VertexID & 2));
v_tex0 = u_src_rect.xy + pos * u_src_rect.zw;
gl_Position = vec4(pos * vec2(2.0f, -2.0f) + vec2(-1.0f, 1.0f), 0.0f, 1.0f);
}
)";
static constexpr char display_fragment_shader[] = R"(
uniform sampler2D samp0;
in vec2 v_tex0;
out vec4 o_col0;
void main()
{
o_col0 = texture(samp0, v_tex0);
}
)";
if (!m_display_program.Compile(GetGLSLVersionHeader() + fullscreen_quad_vertex_shader, {},
GetGLSLVersionHeader() + display_fragment_shader))
{
Log_ErrorPrintf("Failed to compile display shaders");
return false;
}
if (!m_is_gles)
m_display_program.BindFragData(0, "o_col0");
if (!m_display_program.Link())
{
Log_ErrorPrintf("Failed to link display program");
return false;
}
m_display_program.Bind();
m_display_program.RegisterUniform("u_src_rect");
m_display_program.RegisterUniform("samp0");
m_display_program.Uniform1i(1, 0);
glGenVertexArrays(1, &m_display_vao);
// samplers
glGenSamplers(1, &m_display_nearest_sampler);
glSamplerParameteri(m_display_nearest_sampler, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glSamplerParameteri(m_display_nearest_sampler, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glGenSamplers(1, &m_display_linear_sampler);
glSamplerParameteri(m_display_linear_sampler, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glSamplerParameteri(m_display_linear_sampler, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
return true;
}
void OpenGLHostDisplay::Render()
{
if (m_display_width != m_last_display_width || m_display_height != m_last_display_height)
{
retro_game_geometry geom = {};
geom.base_width = m_display_width;
geom.base_height = m_display_height;
geom.aspect_ratio = m_display_pixel_aspect_ratio;
if (!g_retro_environment_callback(RETRO_ENVIRONMENT_SET_GEOMETRY, &geom))
Log_WarningPrint("RETRO_ENVIRONMENT_SET_GEOMETRY failed");
m_last_display_width = m_display_width;
m_last_display_height = m_display_height;
}
const GLuint fbo = static_cast<GLuint>(g_libretro_host_interface.GetHWRenderCallback().get_current_framebuffer());
glDisable(GL_SCISSOR_TEST);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, fbo);
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glClear(GL_COLOR_BUFFER_BIT);
RenderDisplay();
g_retro_video_refresh_callback(RETRO_HW_FRAME_BUFFER_VALID, m_display_width, m_display_height, 0);
GL::Program::ResetLastProgram();
}
void OpenGLHostDisplay::RenderDisplay()
{
if (!m_display_texture_handle)
return;
const auto [vp_left, vp_top, vp_width, vp_height] =
CalculateDrawRect(m_display_width, m_display_height, m_display_top_margin);
glViewport(vp_left, m_display_height - vp_top - vp_height, vp_width, vp_height);
glDisable(GL_BLEND);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glDisable(GL_SCISSOR_TEST);
glDepthMask(GL_FALSE);
m_display_program.Bind();
m_display_program.Uniform4f(
0, static_cast<float>(m_display_texture_view_x) / static_cast<float>(m_display_texture_width),
static_cast<float>(m_display_texture_view_y) / static_cast<float>(m_display_texture_height),
(static_cast<float>(m_display_texture_view_width) - 0.5f) / static_cast<float>(m_display_texture_width),
(static_cast<float>(m_display_texture_view_height) + 0.5f) / static_cast<float>(m_display_texture_height));
glBindTexture(GL_TEXTURE_2D, static_cast<GLuint>(reinterpret_cast<uintptr_t>(m_display_texture_handle)));
glBindSampler(0, m_display_linear_filtering ? m_display_linear_sampler : m_display_nearest_sampler);
glBindVertexArray(m_display_vao);
glDrawArrays(GL_TRIANGLES, 0, 3);
glBindSampler(0, 0);
}

53
src/duckstation-libretro/opengl_host_display.h
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@ -1,53 +0,0 @@
#pragma once
#include "common/gl/program.h"
#include "common/gl/texture.h"
#include "core/host_display.h"
#include "libretro.h"
#include <string>
#include <memory>
class OpenGLHostDisplay final : public HostDisplay
{
public:
OpenGLHostDisplay(bool is_gles);
~OpenGLHostDisplay();
static bool RequestHardwareRendererContext(retro_hw_render_callback* cb);
static std::unique_ptr<HostDisplay> Create(bool debug_device);
RenderAPI GetRenderAPI() const override;
void* GetRenderDevice() const override;
void* GetRenderContext() const override;
std::unique_ptr<HostDisplayTexture> CreateTexture(u32 width, u32 height, const void* data, u32 data_stride,
bool dynamic) override;
void UpdateTexture(HostDisplayTexture* texture, u32 x, u32 y, u32 width, u32 height, const void* data,
u32 data_stride) override;
bool DownloadTexture(const void* texture_handle, u32 x, u32 y, u32 width, u32 height, void* out_data,
u32 out_data_stride) override;
void SetVSync(bool enabled) override;
void Render() override;
private:
const char* GetGLSLVersionString() const;
std::string GetGLSLVersionHeader() const;
bool GetGLContext(bool debug_device);
bool CreateGLResources();
void RenderDisplay();
GL::Program m_display_program;
GLuint m_display_vao = 0;
GLuint m_display_nearest_sampler = 0;
GLuint m_display_linear_sampler = 0;
s32 m_last_display_width = -1;
s32 m_last_display_height = -1;
retro_hw_render_callback m_render_callback = {};
bool m_is_gles = false;
};