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Examples: DirectX9: save/restore some more device state.

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ocornut 2016-04-11 18:33:16 +02:00
parent 1588eda1ac
commit 4466a7b3b0
1 changed files with 16 additions and 1 deletions
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17
examples/directx9_example/imgui_impl_dx9.cpp
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@ -53,6 +53,15 @@ void ImGui_ImplDX9_RenderDrawLists(ImDrawData* draw_data)
return; return;
} }
// Backup some DX9 state (not all!)
// FIXME: Backup/restore everything else
D3DRENDERSTATETYPE last_render_state_to_backup[] = { D3DRS_CULLMODE, D3DRS_LIGHTING, D3DRS_ZENABLE, D3DRS_ALPHABLENDENABLE, D3DRS_ALPHATESTENABLE, D3DRS_BLENDOP, D3DRS_SRCBLEND, D3DRS_DESTBLEND, D3DRS_SCISSORTESTENABLE };
DWORD last_render_state_values[ARRAYSIZE(last_render_state_to_backup)] = { 0 };
IDirect3DPixelShader9* last_ps; g_pd3dDevice->GetPixelShader( &last_ps );
IDirect3DVertexShader9* last_vs; g_pd3dDevice->GetVertexShader( &last_vs );
for (int n = 0; n < ARRAYSIZE(last_render_state_to_backup); n++)
g_pd3dDevice->GetRenderState(last_render_state_to_backup[n], &last_render_state_values[n]);
// Copy and convert all vertices into a single contiguous buffer // Copy and convert all vertices into a single contiguous buffer
CUSTOMVERTEX* vtx_dst; CUSTOMVERTEX* vtx_dst;
ImDrawIdx* idx_dst; ImDrawIdx* idx_dst;
@ -91,8 +100,8 @@ void ImGui_ImplDX9_RenderDrawLists(ImDrawData* draw_data)
g_pd3dDevice->SetRenderState( D3DRS_LIGHTING, false ); g_pd3dDevice->SetRenderState( D3DRS_LIGHTING, false );
g_pd3dDevice->SetRenderState( D3DRS_ZENABLE, false ); g_pd3dDevice->SetRenderState( D3DRS_ZENABLE, false );
g_pd3dDevice->SetRenderState( D3DRS_ALPHABLENDENABLE, true ); g_pd3dDevice->SetRenderState( D3DRS_ALPHABLENDENABLE, true );
g_pd3dDevice->SetRenderState( D3DRS_BLENDOP, D3DBLENDOP_ADD );
g_pd3dDevice->SetRenderState( D3DRS_ALPHATESTENABLE, false ); g_pd3dDevice->SetRenderState( D3DRS_ALPHATESTENABLE, false );
g_pd3dDevice->SetRenderState( D3DRS_BLENDOP, D3DBLENDOP_ADD );
g_pd3dDevice->SetRenderState( D3DRS_SRCBLEND, D3DBLEND_SRCALPHA ); g_pd3dDevice->SetRenderState( D3DRS_SRCBLEND, D3DBLEND_SRCALPHA );
g_pd3dDevice->SetRenderState( D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA ); g_pd3dDevice->SetRenderState( D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA );
g_pd3dDevice->SetRenderState( D3DRS_SCISSORTESTENABLE, true ); g_pd3dDevice->SetRenderState( D3DRS_SCISSORTESTENABLE, true );
@ -137,6 +146,12 @@ void ImGui_ImplDX9_RenderDrawLists(ImDrawData* draw_data)
} }
vtx_offset += cmd_list->VtxBuffer.size(); vtx_offset += cmd_list->VtxBuffer.size();
} }
// Restore some modified DX9 state (not all!)
g_pd3dDevice->SetPixelShader( last_ps );
g_pd3dDevice->SetVertexShader( last_vs );
for (int n = 0; n < ARRAYSIZE(last_render_state_to_backup); n++)
g_pd3dDevice->SetRenderState(last_render_state_to_backup[n], last_render_state_values[n]);
} }
IMGUI_API LRESULT ImGui_ImplDX9_WndProcHandler(HWND, UINT msg, WPARAM wParam, LPARAM lParam) IMGUI_API LRESULT ImGui_ImplDX9_WndProcHandler(HWND, UINT msg, WPARAM wParam, LPARAM lParam)