mirror/imgui
1
0
Fork 0
mirror of https://github.com/ocornut/imgui.git synced 2024-11-27 16:29:02 +08:00
Code Issues Actions 3 Packages Projects Releases Wiki Activity

Backends: DX9: cache result of ImGui_ImplDX9_CheckFormatSupport() as we are going to need it more often.

Browse Source
This commit is contained in:
ocornut 2024-11-20 22:19:34 +01:00
parent 20360e00ce
commit dfbf1b4f6b
1 changed files with 23 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

47
backends/imgui_impl_dx9.cpp
View File

@ -52,6 +52,7 @@ struct ImGui_ImplDX9_Data
LPDIRECT3DTEXTURE9 FontTexture; LPDIRECT3DTEXTURE9 FontTexture;
int VertexBufferSize; int VertexBufferSize;
int IndexBufferSize; int IndexBufferSize;
bool HasRgbaSupport;
ImGui_ImplDX9_Data() { memset((void*)this, 0, sizeof(*this)); VertexBufferSize = 5000; IndexBufferSize = 10000; } ImGui_ImplDX9_Data() { memset((void*)this, 0, sizeof(*this)); VertexBufferSize = 5000; IndexBufferSize = 10000; }
}; };
@ -291,6 +292,24 @@ void ImGui_ImplDX9_RenderDrawData(ImDrawData* draw_data)
state_block->Release(); 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(&param) != 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) bool ImGui_ImplDX9_Init(IDirect3DDevice9* device)
{ {
ImGuiIO& io = ImGui::GetIO(); ImGuiIO& io = ImGui::GetIO();
@ -305,6 +324,7 @@ bool ImGui_ImplDX9_Init(IDirect3DDevice9* device)
bd->pd3dDevice = device; bd->pd3dDevice = device;
bd->pd3dDevice->AddRef(); bd->pd3dDevice->AddRef();
bd->HasRgbaSupport = ImGui_ImplDX9_CheckFormatSupport(bd->pd3dDevice, D3DFMT_A8B8G8R8);
return true; return true;
} }
@ -323,24 +343,6 @@ void ImGui_ImplDX9_Shutdown()
IM_DELETE(bd); IM_DELETE(bd);
} }
static bool ImGui_ImplDX9_CheckFormatSupport(IDirect3DDevice9* pDevice, D3DFORMAT format)
{
IDirect3D9* pd3d = nullptr;
if (pDevice->GetDirect3D(&pd3d) != D3D_OK)
return false;
D3DDEVICE_CREATION_PARAMETERS param = {};
D3DDISPLAYMODE mode = {};
if (pDevice->GetCreationParameters(&param) != 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;
}
static bool ImGui_ImplDX9_CreateFontsTexture() static bool ImGui_ImplDX9_CreateFontsTexture()
{ {
// Build texture atlas // Build texture atlas
@ -352,21 +354,18 @@ static bool ImGui_ImplDX9_CreateFontsTexture()
// Convert RGBA32 to BGRA32 (because RGBA32 is not well supported by DX9 devices) // Convert RGBA32 to BGRA32 (because RGBA32 is not well supported by DX9 devices)
#ifndef IMGUI_USE_BGRA_PACKED_COLOR #ifndef IMGUI_USE_BGRA_PACKED_COLOR
const bool rgba_support = ImGui_ImplDX9_CheckFormatSupport(bd->pd3dDevice, D3DFMT_A8B8G8R8); if (!bd->HasRgbaSupport && io.Fonts->TexPixelsUseColors)
if (!rgba_support && io.Fonts->TexPixelsUseColors)
{ {
ImU32* dst_start = (ImU32*)ImGui::MemAlloc((size_t)width * height * bytes_per_pixel); ImU32* dst_start = (ImU32*)ImGui::MemAlloc((size_t)width * height * bytes_per_pixel);
for (ImU32* src = (ImU32*)pixels, *dst = dst_start, *dst_end = dst_start + (size_t)width * height; dst < dst_end; src++, dst++) for (ImU32* src = (ImU32*)pixels, *dst = dst_start, *dst_end = dst_start + (size_t)width * height; dst < dst_end; src++, dst++)
*dst = IMGUI_COL_TO_DX9_ARGB(*src); *dst = IMGUI_COL_TO_DX9_ARGB(*src);
pixels = (unsigned char*)dst_start; pixels = (unsigned char*)dst_start;
} }
#else
const bool rgba_support = false;
#endif #endif
// Upload texture to graphics system // Upload texture to graphics system
bd->FontTexture = nullptr; bd->FontTexture = nullptr;
if (bd->pd3dDevice->CreateTexture(width, height, 1, D3DUSAGE_DYNAMIC, rgba_support ? D3DFMT_A8B8G8R8 : D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, &bd->FontTexture, nullptr) < 0) if (bd->pd3dDevice->CreateTexture(width, height, 1, D3DUSAGE_DYNAMIC, bd->HasRgbaSupport ? D3DFMT_A8B8G8R8 : D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, &bd->FontTexture, nullptr) < 0)
return false; return false;
D3DLOCKED_RECT tex_locked_rect; D3DLOCKED_RECT tex_locked_rect;
if (bd->FontTexture->LockRect(0, &tex_locked_rect, nullptr, 0) != D3D_OK) if (bd->FontTexture->LockRect(0, &tex_locked_rect, nullptr, 0) != D3D_OK)
@ -379,7 +378,7 @@ static bool ImGui_ImplDX9_CreateFontsTexture()
io.Fonts->SetTexID((ImTextureID)bd->FontTexture); io.Fonts->SetTexID((ImTextureID)bd->FontTexture);
#ifndef IMGUI_USE_BGRA_PACKED_COLOR #ifndef IMGUI_USE_BGRA_PACKED_COLOR
if (!rgba_support && io.Fonts->TexPixelsUseColors) if (!bd->HasRgbaSupport && io.Fonts->TexPixelsUseColors)
ImGui::MemFree(pixels); ImGui::MemFree(pixels);
#endif #endif