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Diffstat (limited to 'libs/imgui-1.92.1/backends/imgui_impl_dx9.cpp')
| -rw-r--r-- | libs/imgui-1.92.1/backends/imgui_impl_dx9.cpp | 478 |
1 files changed, 478 insertions, 0 deletions
diff --git a/libs/imgui-1.92.1/backends/imgui_impl_dx9.cpp b/libs/imgui-1.92.1/backends/imgui_impl_dx9.cpp new file mode 100644 index 0000000..b0159bf --- /dev/null +++ b/libs/imgui-1.92.1/backends/imgui_impl_dx9.cpp @@ -0,0 +1,478 @@ +// dear imgui: Renderer Backend for DirectX9 +// This needs to be used along with a Platform Backend (e.g. Win32) + +// Implemented features: +// [X] Renderer: User texture binding. Use 'LPDIRECT3DTEXTURE9' as texture identifier. Read the FAQ about ImTextureID/ImTextureRef! +// [X] Renderer: Large meshes support (64k+ vertices) even with 16-bit indices (ImGuiBackendFlags_RendererHasVtxOffset). +// [X] Renderer: Texture updates support for dynamic font atlas (ImGuiBackendFlags_RendererHasTextures). +// [X] Renderer: IMGUI_USE_BGRA_PACKED_COLOR support, as this is the optimal color encoding for DirectX9. + +// You can use unmodified imgui_impl_* files in your project. See examples/ folder for examples of using this. +// Prefer including the entire imgui/ repository into your project (either as a copy or as a submodule), and only build the backends you need. +// Learn about Dear ImGui: +// - FAQ https://dearimgui.com/faq +// - Getting Started https://dearimgui.com/getting-started +// - Documentation https://dearimgui.com/docs (same as your local docs/ folder). +// - Introduction, links and more at the top of imgui.cpp + +// CHANGELOG +// (minor and older changes stripped away, please see git history for details) +// 2025-06-11: DirectX9: Added support for ImGuiBackendFlags_RendererHasTextures, for dynamic font atlas. +// 2024-10-07: DirectX9: Changed default texture sampler to Clamp instead of Repeat/Wrap. +// 2024-02-12: DirectX9: Using RGBA format when supported by the driver to avoid CPU side conversion. (#6575) +// 2022-10-11: Using 'nullptr' instead of 'NULL' as per our switch to C++11. +// 2021-06-29: Reorganized backend to pull data from a single structure to facilitate usage with multiple-contexts (all g_XXXX access changed to bd->XXXX). +// 2021-06-25: DirectX9: Explicitly disable texture state stages after >= 1. +// 2021-05-19: DirectX9: Replaced direct access to ImDrawCmd::TextureId with a call to ImDrawCmd::GetTexID(). (will become a requirement) +// 2021-04-23: DirectX9: Explicitly setting up more graphics states to increase compatibility with unusual non-default states. +// 2021-03-18: DirectX9: Calling IDirect3DStateBlock9::Capture() after CreateStateBlock() as a workaround for state restoring issues (see #3857). +// 2021-03-03: DirectX9: Added support for IMGUI_USE_BGRA_PACKED_COLOR in user's imconfig file. +// 2021-02-18: DirectX9: Change blending equation to preserve alpha in output buffer. +// 2019-05-29: DirectX9: Added support for large mesh (64K+ vertices), enable ImGuiBackendFlags_RendererHasVtxOffset flag. +// 2019-04-30: DirectX9: Added support for special ImDrawCallback_ResetRenderState callback to reset render state. +// 2019-03-29: Misc: Fixed erroneous assert in ImGui_ImplDX9_InvalidateDeviceObjects(). +// 2019-01-16: Misc: Disabled fog before drawing UI's. Fixes issue #2288. +// 2018-11-30: Misc: Setting up io.BackendRendererName so it can be displayed in the About Window. +// 2018-06-08: Misc: Extracted imgui_impl_dx9.cpp/.h away from the old combined DX9+Win32 example. +// 2018-06-08: DirectX9: Use draw_data->DisplayPos and draw_data->DisplaySize to setup projection matrix and clipping rectangle. +// 2018-05-07: Render: Saving/restoring Transform because they don't seem to be included in the StateBlock. Setting shading mode to Gouraud. +// 2018-02-16: Misc: Obsoleted the io.RenderDrawListsFn callback and exposed ImGui_ImplDX9_RenderDrawData() in the .h file so you can call it yourself. +// 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves. + +#include "imgui.h" +#ifndef IMGUI_DISABLE +#include "imgui_impl_dx9.h" + +// DirectX +#include <d3d9.h> + +// Clang/GCC warnings with -Weverything +#if defined(__clang__) +#pragma clang diagnostic ignored "-Wold-style-cast" // warning: use of old-style cast // yes, they are more terse. +#pragma clang diagnostic ignored "-Wsign-conversion" // warning: implicit conversion changes signedness +#endif + +// DirectX data +struct ImGui_ImplDX9_Data +{ + LPDIRECT3DDEVICE9 pd3dDevice; + LPDIRECT3DVERTEXBUFFER9 pVB; + LPDIRECT3DINDEXBUFFER9 pIB; + int VertexBufferSize; + int IndexBufferSize; + bool HasRgbaSupport; + + ImGui_ImplDX9_Data() { memset((void*)this, 0, sizeof(*this)); VertexBufferSize = 5000; IndexBufferSize = 10000; } +}; + +struct CUSTOMVERTEX +{ + float pos[3]; + D3DCOLOR col; + float uv[2]; +}; +#define D3DFVF_CUSTOMVERTEX (D3DFVF_XYZ|D3DFVF_DIFFUSE|D3DFVF_TEX1) + +#ifdef IMGUI_USE_BGRA_PACKED_COLOR +#define IMGUI_COL_TO_DX9_ARGB(_COL) (_COL) +#else +#define IMGUI_COL_TO_DX9_ARGB(_COL) (((_COL) & 0xFF00FF00) | (((_COL) & 0xFF0000) >> 16) | (((_COL) & 0xFF) << 16)) +#endif + +// Backend data stored in io.BackendRendererUserData to allow support for multiple Dear ImGui contexts +// It is STRONGLY preferred that you use docking branch with multi-viewports (== single Dear ImGui context + multiple windows) instead of multiple Dear ImGui contexts. +static ImGui_ImplDX9_Data* ImGui_ImplDX9_GetBackendData() +{ + return ImGui::GetCurrentContext() ? (ImGui_ImplDX9_Data*)ImGui::GetIO().BackendRendererUserData : nullptr; +} + +// Functions +static void ImGui_ImplDX9_SetupRenderState(ImDrawData* draw_data) +{ + ImGui_ImplDX9_Data* bd = ImGui_ImplDX9_GetBackendData(); + + // Setup viewport + D3DVIEWPORT9 vp; + vp.X = vp.Y = 0; + vp.Width = (DWORD)draw_data->DisplaySize.x; + vp.Height = (DWORD)draw_data->DisplaySize.y; + vp.MinZ = 0.0f; + vp.MaxZ = 1.0f; + + LPDIRECT3DDEVICE9 device = bd->pd3dDevice; + device->SetViewport(&vp); + + // Setup render state: fixed-pipeline, alpha-blending, no face culling, no depth testing, shade mode (for gradient), bilinear sampling. + device->SetPixelShader(nullptr); + device->SetVertexShader(nullptr); + device->SetRenderState(D3DRS_FILLMODE, D3DFILL_SOLID); + device->SetRenderState(D3DRS_SHADEMODE, D3DSHADE_GOURAUD); + device->SetRenderState(D3DRS_ZWRITEENABLE, FALSE); + device->SetRenderState(D3DRS_ALPHATESTENABLE, FALSE); + device->SetRenderState(D3DRS_CULLMODE, D3DCULL_NONE); + device->SetRenderState(D3DRS_ZENABLE, FALSE); + device->SetRenderState(D3DRS_ALPHABLENDENABLE, TRUE); + device->SetRenderState(D3DRS_BLENDOP, D3DBLENDOP_ADD); + device->SetRenderState(D3DRS_SRCBLEND, D3DBLEND_SRCALPHA); + device->SetRenderState(D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA); + device->SetRenderState(D3DRS_SEPARATEALPHABLENDENABLE, TRUE); + device->SetRenderState(D3DRS_SRCBLENDALPHA, D3DBLEND_ONE); + device->SetRenderState(D3DRS_DESTBLENDALPHA, D3DBLEND_INVSRCALPHA); + device->SetRenderState(D3DRS_SCISSORTESTENABLE, TRUE); + device->SetRenderState(D3DRS_FOGENABLE, FALSE); + device->SetRenderState(D3DRS_RANGEFOGENABLE, FALSE); + device->SetRenderState(D3DRS_SPECULARENABLE, FALSE); + device->SetRenderState(D3DRS_STENCILENABLE, FALSE); + device->SetRenderState(D3DRS_CLIPPING, TRUE); + device->SetRenderState(D3DRS_LIGHTING, FALSE); + device->SetTextureStageState(0, D3DTSS_COLOROP, D3DTOP_MODULATE); + device->SetTextureStageState(0, D3DTSS_COLORARG1, D3DTA_TEXTURE); + device->SetTextureStageState(0, D3DTSS_COLORARG2, D3DTA_DIFFUSE); + device->SetTextureStageState(0, D3DTSS_ALPHAOP, D3DTOP_MODULATE); + device->SetTextureStageState(0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE); + device->SetTextureStageState(0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE); + device->SetTextureStageState(1, D3DTSS_COLOROP, D3DTOP_DISABLE); + device->SetTextureStageState(1, D3DTSS_ALPHAOP, D3DTOP_DISABLE); + device->SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR); + device->SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR); + device->SetSamplerState(0, D3DSAMP_ADDRESSU, D3DTADDRESS_CLAMP); + device->SetSamplerState(0, D3DSAMP_ADDRESSV, D3DTADDRESS_CLAMP); + + // Setup orthographic projection matrix + // Our visible imgui space lies from draw_data->DisplayPos (top left) to draw_data->DisplayPos+data_data->DisplaySize (bottom right). DisplayPos is (0,0) for single viewport apps. + // Being agnostic of whether <d3dx9.h> or <DirectXMath.h> can be used, we aren't relying on D3DXMatrixIdentity()/D3DXMatrixOrthoOffCenterLH() or DirectX::XMMatrixIdentity()/DirectX::XMMatrixOrthographicOffCenterLH() + { + float L = draw_data->DisplayPos.x + 0.5f; + float R = draw_data->DisplayPos.x + draw_data->DisplaySize.x + 0.5f; + float T = draw_data->DisplayPos.y + 0.5f; + float B = draw_data->DisplayPos.y + draw_data->DisplaySize.y + 0.5f; + D3DMATRIX mat_identity = { { { 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f } } }; + D3DMATRIX mat_projection = + { { { + 2.0f/(R-L), 0.0f, 0.0f, 0.0f, + 0.0f, 2.0f/(T-B), 0.0f, 0.0f, + 0.0f, 0.0f, 0.5f, 0.0f, + (L+R)/(L-R), (T+B)/(B-T), 0.5f, 1.0f + } } }; + device->SetTransform(D3DTS_WORLD, &mat_identity); + device->SetTransform(D3DTS_VIEW, &mat_identity); + device->SetTransform(D3DTS_PROJECTION, &mat_projection); + } +} + +// Render function. +void ImGui_ImplDX9_RenderDrawData(ImDrawData* draw_data) +{ + // Avoid rendering when minimized + if (draw_data->DisplaySize.x <= 0.0f || draw_data->DisplaySize.y <= 0.0f) + return; + + ImGui_ImplDX9_Data* bd = ImGui_ImplDX9_GetBackendData(); + LPDIRECT3DDEVICE9 device = bd->pd3dDevice; + + // Catch up with texture updates. Most of the times, the list will have 1 element with an OK status, aka nothing to do. + // (This almost always points to ImGui::GetPlatformIO().Textures[] but is part of ImDrawData to allow overriding or disabling texture updates). + if (draw_data->Textures != nullptr) + for (ImTextureData* tex : *draw_data->Textures) + if (tex->Status != ImTextureStatus_OK) + ImGui_ImplDX9_UpdateTexture(tex); + + // Create and grow buffers if needed + if (!bd->pVB || bd->VertexBufferSize < draw_data->TotalVtxCount) + { + if (bd->pVB) { bd->pVB->Release(); bd->pVB = nullptr; } + bd->VertexBufferSize = draw_data->TotalVtxCount + 5000; + if (device->CreateVertexBuffer(bd->VertexBufferSize * sizeof(CUSTOMVERTEX), D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, D3DFVF_CUSTOMVERTEX, D3DPOOL_DEFAULT, &bd->pVB, nullptr) < 0) + return; + } + if (!bd->pIB || bd->IndexBufferSize < draw_data->TotalIdxCount) + { + if (bd->pIB) { bd->pIB->Release(); bd->pIB = nullptr; } + bd->IndexBufferSize = draw_data->TotalIdxCount + 10000; + if (device->CreateIndexBuffer(bd->IndexBufferSize * sizeof(ImDrawIdx), D3DUSAGE_DYNAMIC | D3DUSAGE_WRITEONLY, sizeof(ImDrawIdx) == 2 ? D3DFMT_INDEX16 : D3DFMT_INDEX32, D3DPOOL_DEFAULT, &bd->pIB, nullptr) < 0) + return; + } + + // Backup the DX9 state + IDirect3DStateBlock9* state_block = nullptr; + if (device->CreateStateBlock(D3DSBT_ALL, &state_block) < 0) + return; + if (state_block->Capture() < 0) + { + state_block->Release(); + return; + } + + // Backup the DX9 transform (DX9 documentation suggests that it is included in the StateBlock but it doesn't appear to) + D3DMATRIX last_world, last_view, last_projection; + device->GetTransform(D3DTS_WORLD, &last_world); + device->GetTransform(D3DTS_VIEW, &last_view); + device->GetTransform(D3DTS_PROJECTION, &last_projection); + + // Allocate buffers + CUSTOMVERTEX* vtx_dst; + ImDrawIdx* idx_dst; + if (bd->pVB->Lock(0, (UINT)(draw_data->TotalVtxCount * sizeof(CUSTOMVERTEX)), (void**)&vtx_dst, D3DLOCK_DISCARD) < 0) + { + state_block->Release(); + return; + } + if (bd->pIB->Lock(0, (UINT)(draw_data->TotalIdxCount * sizeof(ImDrawIdx)), (void**)&idx_dst, D3DLOCK_DISCARD) < 0) + { + bd->pVB->Unlock(); + state_block->Release(); + return; + } + + // Copy and convert all vertices into a single contiguous buffer, convert colors to DX9 default format. + // FIXME-OPT: This is a minor waste of resource, the ideal is to use imconfig.h and + // 1) to avoid repacking colors: #define IMGUI_USE_BGRA_PACKED_COLOR + // 2) to avoid repacking vertices: #define IMGUI_OVERRIDE_DRAWVERT_STRUCT_LAYOUT struct ImDrawVert { ImVec2 pos; float z; ImU32 col; ImVec2 uv; } + for (int n = 0; n < draw_data->CmdListsCount; n++) + { + const ImDrawList* draw_list = draw_data->CmdLists[n]; + const ImDrawVert* vtx_src = draw_list->VtxBuffer.Data; + for (int i = 0; i < draw_list->VtxBuffer.Size; i++) + { + vtx_dst->pos[0] = vtx_src->pos.x; + vtx_dst->pos[1] = vtx_src->pos.y; + vtx_dst->pos[2] = 0.0f; + vtx_dst->col = IMGUI_COL_TO_DX9_ARGB(vtx_src->col); + vtx_dst->uv[0] = vtx_src->uv.x; + vtx_dst->uv[1] = vtx_src->uv.y; + vtx_dst++; + vtx_src++; + } + memcpy(idx_dst, draw_list->IdxBuffer.Data, draw_list->IdxBuffer.Size * sizeof(ImDrawIdx)); + idx_dst += draw_list->IdxBuffer.Size; + } + bd->pVB->Unlock(); + bd->pIB->Unlock(); + device->SetStreamSource(0, bd->pVB, 0, sizeof(CUSTOMVERTEX)); + device->SetIndices(bd->pIB); + device->SetFVF(D3DFVF_CUSTOMVERTEX); + + // Setup desired DX state + ImGui_ImplDX9_SetupRenderState(draw_data); + + // Render command lists + // (Because we merged all buffers into a single one, we maintain our own offset into them) + int global_vtx_offset = 0; + int global_idx_offset = 0; + ImVec2 clip_off = draw_data->DisplayPos; + for (int n = 0; n < draw_data->CmdListsCount; n++) + { + const ImDrawList* draw_list = draw_data->CmdLists[n]; + for (int cmd_i = 0; cmd_i < draw_list->CmdBuffer.Size; cmd_i++) + { + const ImDrawCmd* pcmd = &draw_list->CmdBuffer[cmd_i]; + if (pcmd->UserCallback != nullptr) + { + // User callback, registered via ImDrawList::AddCallback() + // (ImDrawCallback_ResetRenderState is a special callback value used by the user to request the renderer to reset render state.) + if (pcmd->UserCallback == ImDrawCallback_ResetRenderState) + ImGui_ImplDX9_SetupRenderState(draw_data); + else + pcmd->UserCallback(draw_list, pcmd); + } + else + { + // Project scissor/clipping rectangles into framebuffer space + ImVec2 clip_min(pcmd->ClipRect.x - clip_off.x, pcmd->ClipRect.y - clip_off.y); + ImVec2 clip_max(pcmd->ClipRect.z - clip_off.x, pcmd->ClipRect.w - clip_off.y); + if (clip_max.x <= clip_min.x || clip_max.y <= clip_min.y) + continue; + + // Apply scissor/clipping rectangle + const RECT r = { (LONG)clip_min.x, (LONG)clip_min.y, (LONG)clip_max.x, (LONG)clip_max.y }; + device->SetScissorRect(&r); + + // Bind texture, Draw + const LPDIRECT3DTEXTURE9 texture = (LPDIRECT3DTEXTURE9)pcmd->GetTexID(); + device->SetTexture(0, texture); + device->DrawIndexedPrimitive(D3DPT_TRIANGLELIST, pcmd->VtxOffset + global_vtx_offset, 0, (UINT)draw_list->VtxBuffer.Size, pcmd->IdxOffset + global_idx_offset, pcmd->ElemCount / 3); + } + } + global_idx_offset += draw_list->IdxBuffer.Size; + global_vtx_offset += draw_list->VtxBuffer.Size; + } + + // Restore the DX9 transform + device->SetTransform(D3DTS_WORLD, &last_world); + device->SetTransform(D3DTS_VIEW, &last_view); + device->SetTransform(D3DTS_PROJECTION, &last_projection); + + // Restore the DX9 state + state_block->Apply(); + state_block->Release(); +} + +static bool ImGui_ImplDX9_CheckFormatSupport(LPDIRECT3DDEVICE9 pDevice, D3DFORMAT format) +{ + LPDIRECT3D9 pd3d = nullptr; + if (pDevice->GetDirect3D(&pd3d) != D3D_OK) + return false; + D3DDEVICE_CREATION_PARAMETERS param = {}; + D3DDISPLAYMODE mode = {}; + if (pDevice->GetCreationParameters(¶m) != D3D_OK || pDevice->GetDisplayMode(0, &mode) != D3D_OK) + { + pd3d->Release(); + return false; + } + // Font texture should support linear filter, color blend and write to render-target + bool support = (pd3d->CheckDeviceFormat(param.AdapterOrdinal, param.DeviceType, mode.Format, D3DUSAGE_DYNAMIC | D3DUSAGE_QUERY_FILTER | D3DUSAGE_QUERY_POSTPIXELSHADER_BLENDING, D3DRTYPE_TEXTURE, format)) == D3D_OK; + pd3d->Release(); + return support; +} + +bool ImGui_ImplDX9_Init(IDirect3DDevice9* device) +{ + ImGuiIO& io = ImGui::GetIO(); + IMGUI_CHECKVERSION(); + IM_ASSERT(io.BackendRendererUserData == nullptr && "Already initialized a renderer backend!"); + + // Setup backend capabilities flags + ImGui_ImplDX9_Data* bd = IM_NEW(ImGui_ImplDX9_Data)(); + io.BackendRendererUserData = (void*)bd; + io.BackendRendererName = "imgui_impl_dx9"; + io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset; // We can honor the ImDrawCmd::VtxOffset field, allowing for large meshes. + io.BackendFlags |= ImGuiBackendFlags_RendererHasTextures; // We can honor ImGuiPlatformIO::Textures[] requests during render. + + ImGuiPlatformIO& platform_io = ImGui::GetPlatformIO(); + platform_io.Renderer_TextureMaxWidth = platform_io.Renderer_TextureMaxHeight = 4096; + + bd->pd3dDevice = device; + bd->pd3dDevice->AddRef(); + bd->HasRgbaSupport = ImGui_ImplDX9_CheckFormatSupport(bd->pd3dDevice, D3DFMT_A8B8G8R8); + + return true; +} + +void ImGui_ImplDX9_Shutdown() +{ + ImGui_ImplDX9_Data* bd = ImGui_ImplDX9_GetBackendData(); + IM_ASSERT(bd != nullptr && "No renderer backend to shutdown, or already shutdown?"); + ImGuiIO& io = ImGui::GetIO(); + + ImGui_ImplDX9_InvalidateDeviceObjects(); + if (bd->pd3dDevice) { bd->pd3dDevice->Release(); } + io.BackendRendererName = nullptr; + io.BackendRendererUserData = nullptr; + io.BackendFlags &= ~(ImGuiBackendFlags_RendererHasVtxOffset | ImGuiBackendFlags_RendererHasTextures); + IM_DELETE(bd); +} + +// Convert RGBA32 to BGRA32 (because RGBA32 is not well supported by DX9 devices) +static void ImGui_ImplDX9_CopyTextureRegion(bool tex_use_colors, const ImU32* src, int src_pitch, ImU32* dst, int dst_pitch, int w, int h) +{ +#ifndef IMGUI_USE_BGRA_PACKED_COLOR + ImGui_ImplDX9_Data* bd = ImGui_ImplDX9_GetBackendData(); + const bool convert_rgba_to_bgra = (!bd->HasRgbaSupport && tex_use_colors); +#else + const bool convert_rgba_to_bgra = false; + IM_UNUSED(tex_use_colors); +#endif + for (int y = 0; y < h; y++) + { + const ImU32* src_p = (const ImU32*)(const void*)((const unsigned char*)src + src_pitch * y); + ImU32* dst_p = (ImU32*)(void*)((unsigned char*)dst + dst_pitch * y); + if (convert_rgba_to_bgra) + for (int x = w; x > 0; x--, src_p++, dst_p++) // Convert copy + *dst_p = IMGUI_COL_TO_DX9_ARGB(*src_p); + else + memcpy(dst_p, src_p, w * 4); // Raw copy + } +} + +void ImGui_ImplDX9_UpdateTexture(ImTextureData* tex) +{ + ImGui_ImplDX9_Data* bd = ImGui_ImplDX9_GetBackendData(); + + if (tex->Status == ImTextureStatus_WantCreate) + { + // Create and upload new texture to graphics system + //IMGUI_DEBUG_LOG("UpdateTexture #%03d: WantCreate %dx%d\n", tex->UniqueID, tex->Width, tex->Height); + IM_ASSERT(tex->TexID == ImTextureID_Invalid && tex->BackendUserData == nullptr); + IM_ASSERT(tex->Format == ImTextureFormat_RGBA32); + LPDIRECT3DTEXTURE9 dx_tex = nullptr; + HRESULT hr = bd->pd3dDevice->CreateTexture(tex->Width, tex->Height, 1, D3DUSAGE_DYNAMIC, bd->HasRgbaSupport ? D3DFMT_A8B8G8R8 : D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, &dx_tex, nullptr); + if (hr < 0) + { + IM_ASSERT(hr >= 0 && "Backend failed to create texture!"); + return; + } + + D3DLOCKED_RECT locked_rect; + if (dx_tex->LockRect(0, &locked_rect, nullptr, 0) == D3D_OK) + { + ImGui_ImplDX9_CopyTextureRegion(tex->UseColors, (ImU32*)tex->GetPixels(), tex->Width * 4, (ImU32*)locked_rect.pBits, (ImU32)locked_rect.Pitch, tex->Width, tex->Height); + dx_tex->UnlockRect(0); + } + + // Store identifiers + tex->SetTexID((ImTextureID)(intptr_t)dx_tex); + tex->SetStatus(ImTextureStatus_OK); + } + else if (tex->Status == ImTextureStatus_WantUpdates) + { + // Update selected blocks. We only ever write to textures regions which have never been used before! + // This backend choose to use tex->Updates[] but you can use tex->UpdateRect to upload a single region. + LPDIRECT3DTEXTURE9 backend_tex = (LPDIRECT3DTEXTURE9)(intptr_t)tex->TexID; + RECT update_rect = { (LONG)tex->UpdateRect.x, (LONG)tex->UpdateRect.y, (LONG)(tex->UpdateRect.x + tex->UpdateRect.w), (LONG)(tex->UpdateRect.y + tex->UpdateRect.h) }; + D3DLOCKED_RECT locked_rect; + if (backend_tex->LockRect(0, &locked_rect, &update_rect, 0) == D3D_OK) + for (ImTextureRect& r : tex->Updates) + ImGui_ImplDX9_CopyTextureRegion(tex->UseColors, (ImU32*)tex->GetPixelsAt(r.x, r.y), tex->Width * 4, + (ImU32*)locked_rect.pBits + (r.x - update_rect.left) + (r.y - update_rect.top) * (locked_rect.Pitch / 4), (int)locked_rect.Pitch, r.w, r.h); + backend_tex->UnlockRect(0); + tex->SetStatus(ImTextureStatus_OK); + } + else if (tex->Status == ImTextureStatus_WantDestroy) + { + LPDIRECT3DTEXTURE9 backend_tex = (LPDIRECT3DTEXTURE9)tex->TexID; + if (backend_tex == nullptr) + return; + IM_ASSERT(tex->TexID == (ImTextureID)(intptr_t)backend_tex); + backend_tex->Release(); + + // Clear identifiers and mark as destroyed (in order to allow e.g. calling InvalidateDeviceObjects while running) + tex->SetTexID(ImTextureID_Invalid); + tex->SetStatus(ImTextureStatus_Destroyed); + } +} + +bool ImGui_ImplDX9_CreateDeviceObjects() +{ + ImGui_ImplDX9_Data* bd = ImGui_ImplDX9_GetBackendData(); + if (!bd || !bd->pd3dDevice) + return false; + return true; +} + +void ImGui_ImplDX9_InvalidateDeviceObjects() +{ + ImGui_ImplDX9_Data* bd = ImGui_ImplDX9_GetBackendData(); + if (!bd || !bd->pd3dDevice) + return; + + // Destroy all textures + for (ImTextureData* tex : ImGui::GetPlatformIO().Textures) + if (tex->RefCount == 1) + { + tex->SetStatus(ImTextureStatus_WantDestroy); + ImGui_ImplDX9_UpdateTexture(tex); + } + if (bd->pVB) { bd->pVB->Release(); bd->pVB = nullptr; } + if (bd->pIB) { bd->pIB->Release(); bd->pIB = nullptr; } +} + +void ImGui_ImplDX9_NewFrame() +{ + ImGui_ImplDX9_Data* bd = ImGui_ImplDX9_GetBackendData(); + IM_ASSERT(bd != nullptr && "Context or backend not initialized! Did you call ImGui_ImplDX9_Init()?"); + IM_UNUSED(bd); +} + +//----------------------------------------------------------------------------- + +#endif // #ifndef IMGUI_DISABLE |