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Backends: DX9: Fix handling of colored textures (#3844, #3868)

This commit is contained in:
ocornut 2021-03-03 18:34:07 +01:00
parent 25679a411e
commit 662535f357
1 changed files with 12 additions and 3 deletions
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15
backends/imgui_impl_dx9.cpp
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@ -250,11 +250,15 @@ static bool ImGui_ImplDX9_CreateFontsTexture()
int width, height, bytes_per_pixel;
io.Fonts->GetTexDataAsRGBA32(&pixels, &width, &height, &bytes_per_pixel);
// Convert RGBA32 to BGRA32 as the earlier 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
if (io.Fonts->TexPixelsUseColors)
for (ImU32* p = (ImU32*)pixels, *p_end = p + width * height; p < p_end; p++)
*p = IMGUI_COL_TO_DX9_ARGB(*p);
{
ImU32* dst_start = (ImU32*)ImGui::MemAlloc(width * height * bytes_per_pixel);
for (ImU32* src = (ImU32*)pixels, *dst = dst_start, *dst_end = dst_start + width * height; dst < dst_end; src++, dst++)
*dst = IMGUI_COL_TO_DX9_ARGB(*src);
pixels = (unsigned char*)dst_start;
}
#endif
// Upload texture to graphics system
@ -271,6 +275,11 @@ static bool ImGui_ImplDX9_CreateFontsTexture()
// Store our identifier
io.Fonts->SetTexID((ImTextureID)g_FontTexture);
#ifndef IMGUI_USE_BGRA_PACKED_COLOR
if (io.Fonts->TexPixelsUseColors)
ImGui::MemFree(pixels);
#endif
return true;
}