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base repository: SpaiR/imgui-java
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head repository: Igrium/imgui-java
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  • 9 commits
  • 15 files changed
  • 2 contributors

Commits on Jul 23, 2026

  1. feat(api): add ImTextureData texture-management types 

    Bind Dear ImGui 1.92's texture-management structs and enums so backends can
drive ImGuiBackendFlags_RendererHasTextures:

- ImTextureFormat / ImTextureStatus flag enums (AST-generated).
- ImTextureRect wrapper (x/y/w/h of an update region).
- ImTextureData wrapper exposing the struct fields (status, format, size,
  pixels, texID, update rects, ...) and binding through the C++ SetStatus/
  SetTexID/Create/DestroyPixels methods. getPixels() returns a direct
  ByteBuffer over the native pixel buffer (no copy).

These are the core-library/backend-facing types; end-user application code
does not need them. Follow-up commits expose the per-frame texture lists and
wire the LWJGL GL3 backend.

Co-authored-by: Claude <[email protected]>
    @claude @Igrium
    claude authored and Igrium committed Jul 23, 2026
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  2. feat(api): expose per-frame texture lists for renderer backends 

    Add the accessors a renderer backend needs to honor texture requests each
frame:

- ImDrawData.getTexturesSize()/getTextures(idx) over ImDrawData::Textures
  (may be NULL when texture updates are disabled).
- ImGuiPlatformIO.getTexturesSize()/getTextures(idx) over the platform IO
  texture list, plus Renderer_TextureMaxWidth/Height getters and setters so
  the backend can advertise its maximum texture size.

Co-authored-by: Claude <[email protected]>
    @claude @Igrium
    claude authored and Igrium committed Jul 23, 2026
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  3. feat(api): drive ImTextureData texture updates in the GL3 backend 

    Wire ImGuiImplGl3 to Dear ImGui 1.92's texture-management system and enable
ImGuiBackendFlags_RendererHasTextures end-to-end:

- init(): advertise RendererHasTextures and publish the GL max texture size
  via ImGuiPlatformIO.Renderer_TextureMaxWidth/Height; shutdown() clears the
  flag.
- renderDrawData(): before drawing, iterate ImDrawData's texture list and
  reconcile every non-OK ImTextureData with the GPU.
- updateTexture()/destroyTexture(): create (glTexImage2D from the texture's
  pixel buffer), incrementally update (glTexSubImage2D over UpdateRect
  blocks using UNPACK_ROW_LENGTH) and destroy GL textures, reporting the new
  TexID/status back through the C++ SetTexID/SetStatus methods.
- createDeviceObjects()/newFrame() no longer eagerly build the font texture;
  destroyDeviceObjects() frees every owned texture (RefCount == 1).

The legacy createFontsTexture()/destroyFontsTexture() methods are kept and
deprecated for source compatibility, but are no longer part of the frame
loop.

Co-authored-by: Claude <[email protected]>
    @claude @Igrium
    claude authored and Igrium committed Jul 23, 2026
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  4. feat(api): demonstrate texture management in the example app 

    Add a "Texture Management" section to the example that reads the live
ImTextureData list the GL3 backend now maintains
(ImGuiBackendFlags_RendererHasTextures): it reports the backend flag state,
lists each managed texture's id/size/format/status/texID, and renders the
uploaded font-atlas texture inline via ImGui.image().

Co-authored-by: Claude <[email protected]>
    @claude @Igrium
    claude authored and Igrium committed Jul 23, 2026
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  5. chore(build): update linux native with ImTextureData JNI symbols 

    Rebuild bin/libimgui-java64.so (linux64) so the new ImTextureData /
ImTextureRect / ImDrawData / ImGuiPlatformIO native methods resolve at
runtime; without this the branch throws UnsatisfiedLinkError against the
stale prebuilt library.

NOTE: only the linux64 native is refreshed here — the macOS/Windows natives
in bin/ still predate these JNI methods and will be regenerated by CI's
post-merge native build.

Co-authored-by: Claude <[email protected]>
    @claude @Igrium
    claude authored and Igrium committed Jul 23, 2026
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  6. fix(example): don't call ImFontAtlas.build() under RendererHasTexture… 

    …s backend

With the 1.92 texture-management backend the font atlas is baked lazily by
the renderer. Calling build() explicitly sets PreloadedAllGlyphsRanges and
trips the 'you don't need to call Build()' assertion in ImFontAtlasUpdateNewFrame,
after which NewFrame proceeds with an inconsistent atlas and the render path
crashes.

Co-Authored-By: Claude Opus 4.8 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Jj7rjyyfxUigrtxA4fMRKf
    @claude @Igrium
    claude authored and Igrium committed Jul 23, 2026
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  7. fix(gl3): save/restore GL_UNPACK state in updateTexture to match upst… 

    …ream

Compared updateTexture against the current imgui_impl_opengl3.cpp
ImGui_ImplOpenGL3_UpdateTexture. Upstream backs up GL_UNPACK_ROW_LENGTH and
GL_UNPACK_ALIGNMENT on entry and restores them on exit; the port previously
set them without restoring, breaking the backend's back-up/restore-all-GL-state
contract for hosts with non-default unpack state. Mirror upstream exactly:
save both, set ALIGNMENT=1, set ROW_LENGTH=0 in WantCreate / =width in
WantUpdates, then restore both.

Co-Authored-By: Claude Opus 4.8 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Jj7rjyyfxUigrtxA4fMRKf
    @claude @Igrium
    claude authored and Igrium committed Jul 23, 2026
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  8. renameed tmp_texture_data to _gettextures_1 to fit with convention

    @Igrium
    Igrium committed Jul 23, 2026
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  9. forgot to regenerate api again

    @Igrium
    Igrium committed Jul 23, 2026
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