- xr_input.c/h: an OpenXR action set (aim pose, trigger/select click, a menu-toggle button) plus ray/quad hit-testing, and a visible laser-pointer line drawn from the controller toward the hit point. - xr_menu.c/h + MenuOverlay.java: a second composition-layer quad, toggled by a controller button, showing an off-screen, never-attached Android View tree (one "Keyboard" button so far) driven by synthetic touch events computed from the laser ray's hit UV. - Migrate gl4es from a prebuilt binary baked into the Docker build-image to a vendored source snapshot (android/gl4es-src/) compiled from source at APK build time via CMake add_subdirectory(), patched through a new android/gl4es-patches/ (mirrors the existing engine-patches/ pattern). This was needed to track down and fix a bug hit while building the menu: gl4es's fixed-pipeline emulation (fpe.c) was unconditionally substituting its own shader onto the menu's draw call (fpe_ReleventState() always sets alphafunc to a nonzero sentinel, so its fpe_IsEmpty() check could never see the state as empty), making the menu quad show the game's own rendering instead of its own content. Fixed by routing the menu's blit through a real glBlitFramebuffer() call instead of a shader-based draw, which gl4es's fpe.c has nothing to intercept - documented in README.md's new "Debugging notes" section. - Renumber android/engine-patches/ to close the gap left by removing an unrelated diagnostic-only patch, and strip investigation-journal comments and dead diagnostic code (temporary tracing, env-var probes) left over from finding the bug above. - Restructure README.md into numbered sections, document every engine/gl4es patch, add Android Studio dev/testing-cycle instructions, and generalize Quest-specific wording to any OpenXR headset. Update NOTICE.txt to match (gl4es is now vendored/patched source, not a prebuilt binary; add the OpenXR-SDK loader).
This commit is contained in:
ml
@@ -0,0 +1,387 @@
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Usage
|
||||
----
|
||||
|
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There are many environment variables to control gl4es behavior. All are numeric, except LIBGL_VERSION that take a string, LIBGL_FBO that takes a 2d size (WxH), and both LIBGL_EGL and LIBGL_GLES that take path/filename.
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You can also change many of this variable at runtime using the `glHint(...)` function. See [gl4eshint.h](include/gl4eshint.h) for the list of #define to use in this function.
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|
||||
##### LIBGL_FB
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Controls the Framebuffer output
|
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* 0 : Default, using standard x11 rendering
|
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* 1 : Use Framebuffer output (x11 bypassed, only fullscreen)
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||||
* 2 : Use Framebuffer, but also an intermediary FBO
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* 3 : Use PBuffer, allowing x11 (and windowed) rendering even if driver doesn't support it
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|
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##### LIBGL_FBONOALPHA
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In case of LIBGL_FB=2, control if FBO is RGBA or RGB
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* 0 : Default, use RGBA
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* 1 : Use RGB for FBO
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|
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##### LIBGL_ES
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Controls the version of GLES to use
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* 0 : Default, using GLES 2.0 backend (unless built with DEFAULT_ES 1) (not on Pandora, still GLES 1.1 backend by default)
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* 1 : Use GLES 1.1 backend
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* 2 : Use GLES 2.0 backend
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|
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##### LIBGL_GL
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Controls the version of OpenGL exposed
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* 0 : Default, expose OpenGL 1.5 when using GLES1.1 or OpenGL 2.1 when using GLES2.0
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* 10..14: Export OpenGL 1.0-1.4
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* 15: Expose OpenGL 1.5 (default for GLES 1.1 backend)
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* 20: Expose OpenGL 2.0
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* 21: Expose OpenGL 2.1 (default for GLES 2.0 backend)
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##### LIBGL_XREFRESH
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Debug helper in specific cases
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* 0 : Default, nothing special
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* 1 : xrefresh will be called on cleanup
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|
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##### LIBGL_STACKTRACE
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Automatic Backtrace log
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* 0 : Default, nothing special
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* 1 : stacktrace will be printed on crash
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|
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##### LIBGL_FPS
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Print current FPS to the console
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* 0 : Defaut, don't measure or printf FPS
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* 1 : Print FPS (on stdout) every second
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|
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##### LIBGL_VSYNC
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VSync control
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* 0 : Default, nothing special
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* 1 : vsync enabled
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##### LIBGL_RECYCLEFBO
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Recycling FBO special case (don't delete a created FBO, but recycle it if needed)
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* 0 : Default, nothing special
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* 1 : Recycling of FBO enabled
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##### LIBGL_MIPMAP
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Handling of Manual and Automatic MIPMAP
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* 0 : Default, nothing special
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* 1 : AutoMipMap forced
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* 2 : guess AutoMipMap (based on manual mipmaping on textures)
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* 3 : ignore MipMap (mipmap creation / use entirely disabled)
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* 4 : ignore AutoMipMap on non-squared textures
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* 5 : calculate all sub-mipmap one time when uploading level 1
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##### LIBGL_FORCENPOT
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Forcing NPOT (Non-Power of Two) Texture size.
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* 0 : Default, nothing special
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* 1 : If hardware only support Limited NPOT, then disabling MIPMAP (i.e. LIBGL_MIPMAP=3), so all texture can be NPOT.
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If Hardware support full NPOT, do nothing special. Useful for GLES2 backend where limited NPOT is always supported.
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##### LIBGL_TEXCOPY
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Make a local copy of every texture for easy glGetTexImage2D
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* 0 : Default, nothing special
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* 1 : Texture copy enabled
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##### LIBGL_SHRINK
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Texture shrinking control
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* 0 : Default, nothing special
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* 1 : everything / 2 (using original algorithm for size reduction, all other shrink mode use a refined algorithm)
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* 2 : only textures which one size > 512 are / 2
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* 3 : only textures which one size > 256 are / 2
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* 4 : only textures which one size > 256 are / 2, and the one > 1024 are / 4
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* 5 : only textures which one size > 256 are resized to 256 (if possible, because only /2 and /4 exists), but empty texture are not shrunken
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* 6 : only textures which one size > 128 are / 2, those >= 512 are resized to 256 (if possible, because only /2 and /4 exists), but empty texture are not shrunken
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* 7 : only textures which one size > 512 are / 2, but empty texture are not shrunken
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* 8 : advertise a max texture size *4, but every texture which one size > 2048 are shrunken to 2048
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* 9 : advertise a max texture size *4, but every texture which one size > 4096 are / 4 and the one > 512 are / 2, but empty texture are not shrunken
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* 10: advertise a max texture size *4, but every texture which one size > 2048 are / 4 and the one > 512 are / 2, but empty texture are not shrunken
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* 11: advertise a max texture size *2, but every texture with one dimension > max texture size will get shrunken to max texture size
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|
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##### LIBGL_TEXDUMP
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Texture dump
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* 0 : Default, nothing special
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* 1 : Texture dump enabled
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##### LIBGL_ALPHAHACK
|
||||
Experimental: enable Alpha test only when using texture that contains an alpha channel
|
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* 0 : Default, nothing special
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* 1 : Alpha Hack enabled
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|
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##### LIBGL_NODOWNSAMPLING
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Texture downsampling control (deprecated, use LIBGL_AVOID16BITS instead)
|
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* 0 : Default, DXTc texture are downsampled to 16bits
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* 1 : DXTc texture are left as 32bits RGBA
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|
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##### LIBGL_STREAM
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PANDORA only: enable Texture Streaming (works only on RGB textures)
|
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* 0 : Default, nothing special
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* 1 : Enabled on empty RGB textures
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* 2 : Enabled on all RGB textures
|
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|
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##### LIBGL_COPY
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Removed (Controlled the glCopyTex(Sub)Image2D hack, it's now automatic, depending on how compatible is the read framebuffer)
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##### LIBGL_NOLUMALPHA
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Control the availability of the LUMINANCE_ALPHA format (can be buggy on Pandora model CC)
|
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* 0 : Default,GL_LUMINANCE_ALPHA is available and used if needed
|
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* 1 : GL_LUMINANCE_ALPHA hardware support disabled (a GL_RGBA texture will be used instead)
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||||
|
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##### LIBGL_BLENDHACK
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Experimental: Change Blend GL_SRC_ALPHA, GL_ONE to GL_ONE, GL_ONE
|
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* 0 : Default, nothing special
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* 1 : Change Blend GL_SRC_ALPHA, GL_ONE to GL_ONE, GL_ONE (can be usefull for Xash3D engine)
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|
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##### LIBGL_BLENDCOLOR
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Hack: Export a (faked) glBlendColor
|
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* 0 : Default, don't expose gBlendColor
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* 1 : Exposed the function (if no hardware support, faked function will be used)
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|
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##### LIBGL_VERSION
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Hack: Control the glGetString version. Override version string (should be in the form of "1.x")
|
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|
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##### LIBGL_BATCH
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This has been changed with v1.0.5.
|
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Now BATCH simply try to merge subsequent glDrawXXXXX (glDrawArrays, glDrawElements...). It only try to merge if arrays is between MINBATCH and MAXBATCH (inclusive)
|
||||
The Batching stop when there is a change of GL State, but also if an Array of more then 100*N is encountered.
|
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* 0 : Default: don't try to merge glDrawXXXXX
|
||||
* N : Any number: try to merger arrays, 1st must be between 0 and 100*N
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* MIN-MAX : 2 number separated by minus, to try merge arrays that are between MIN and MAX vertices
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||||
|
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##### LIBGL_NOERROR
|
||||
Hack: glGetError() always return GL_NOERROR
|
||||
* 0 : Default, glGetError behave as it should
|
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* 1 : glGetError never fail.
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|
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##### LIBGL_GAMMA
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||||
Pandora Hack: Set a Gamma value (in decimal formal, 1.0 means no gamma boost)
|
||||
* X.Y : Use X.Y as gamma when creating context (typical value can be 1.6 or 2.0)
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||||
|
||||
##### LIBGL_SRGB
|
||||
ODROID Hack: Enable sRGB Surface (so Gamma corrected), if Hardware support it
|
||||
* 0 : Default, don't try to use sRGB surface
|
||||
* 1 : Enable sRGB Surface (but support will be tested first, must have EGL_KHR_gl_colorspace extension)
|
||||
|
||||
##### LIBGL_FASTMATH
|
||||
Hack: Activate some Fast Math in processor/co-processor
|
||||
* 0 : Default, nothing special
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||||
* 1 : On OpenPandora and CHIP, activate "RunFast" on Cortex-A8 (mode default NaN, flush-to-zero)
|
||||
: Not implemented on other platforms (will do nothing)
|
||||
|
||||
##### LIBGL_SILENTSTUB
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||||
Debug: Hide or Show the Sub / Not found message
|
||||
* 0 : The messages for Stub or absent function are printed
|
||||
* 1 : Default, don't print the STUB or glXGetProcAddress glXXXXX not found message
|
||||
|
||||
##### LIBGL_NOBANNER
|
||||
Show/Hide initial text
|
||||
* 0 : Default, print starting message
|
||||
* 1 : Silent: no LIBGL message at start (combine with LIBGL_SILENTSTUB for more silence)
|
||||
|
||||
##### LIBGL_NPOT
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||||
Expose NPOT (Non Power of Two) Support
|
||||
* 0 : Default, expose the extension that are available by the GLES backend
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||||
* 1 : Expose limited NPOT extension
|
||||
* 2 : Expose GL_ARB_texture_non_power_of_two extension
|
||||
|
||||
##### LIBGL_GLQUERIES
|
||||
Expose glQueries functions
|
||||
* 0 : Don't expose the function (fake one will be used if called)
|
||||
* 1 : Default, expose fake functions (always answer 0)
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||||
|
||||
##### LIBGL_NOTEXMAT
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||||
Handling of Texture Matrix
|
||||
* 0 : Default, perform handling internally (better handling of NPOT texture on all hardware)
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||||
* 1 : Let the driver handle texmat (can be faster in some cases, but NPOT texture may be broken)
|
||||
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||||
##### LIBGL_NOTEST
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||||
Initial Hardware test
|
||||
* 0 : Default, perform initial hardware testing (using a PBuffer)
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||||
* 1 : Do not perform test (no extensions tested or used)
|
||||
|
||||
##### LIBGL_NOVAOCACHE
|
||||
VAO Caching
|
||||
* 0 : Default, try to cache vao to avoid memcpy in render list
|
||||
* 1 : Don't cache VAO
|
||||
|
||||
##### LIBGL_VABGRA
|
||||
Vertex Array BGRA extension
|
||||
* 0 : Default, GL_ARB_vertex_array_bgra not exposed (still emulated)
|
||||
* 1 : Extension exposed may be faster in some cases (Arx Libertatis mainly)
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||||
|
||||
##### LIBGL_BEGINEND
|
||||
Merge of subsequent glBegin/glEnd blocks (will be non-effective if BATCH mode is used)
|
||||
* 0 : Don't try to merge
|
||||
* 1 : Try to merge, even if there is a glColor / glNormal in between (default)
|
||||
|
||||
##### LIBGL_AVOID16BITS
|
||||
Try to avoid 16bits textures
|
||||
* 0 : Default on ImgTec hardware, use 16bits texture if it can avoid a conversion or for DXTc textures
|
||||
* 1 : Default on all other hardware, Use 32bits texture unless specifically requested (using internalformat)
|
||||
|
||||
##### LIBGL_AVOID24BITS
|
||||
Try to avoid 24bits textures (i.e. GL_RGB)
|
||||
* 0 : Default, use 24bits texture when it's possible
|
||||
* 1 : Force 32bits textures when GL_RGB is asked (as internal or not). Not recommended, as it may break some blend functions (especially on GLES 1.1 backend). Does not impact 16bits formats.
|
||||
|
||||
##### LIBGL_FORCE16BITS
|
||||
Try to use 16bits textures
|
||||
* 0 : Default, don't force 16bits texture
|
||||
* 1 : Use 16bits texture instead of 32bits (i.e. use RGBA4 instead of RGBA8 and RGB5 instead of RGB8)
|
||||
|
||||
##### LIBGL_POTFRAMEBUFFER
|
||||
Use only Power Of Two dimension for Framebuffer
|
||||
* 0 : Default, use NPOT dimension if supported
|
||||
* 1 : Force Framebuffer to be created with POT dimension (not advised on GLES2 backend)
|
||||
|
||||
##### LIBGL_NOBGRA
|
||||
Ignore BGRA Texture hardware extension
|
||||
* 0 : Default, use BGRA extension if possible
|
||||
* 1 : Ignore BGRA extension, even if supported by GLES hardware
|
||||
|
||||
##### LIBGL_NOTEXRECT
|
||||
Don't expose Texture rectangle extension (GL_ARB_texture_rectangle)
|
||||
* 0 : Default, the extension is listed
|
||||
* 1 : Don't expose the extension (it's not supported in shaders yet)
|
||||
|
||||
##### LIBGL_NOHIGHP
|
||||
Usage of highp precision in fragment shader (ES2 backend only)
|
||||
* 0 : Default, use highp if available
|
||||
* 1 : Disable usage of highp in Fragment shaders
|
||||
|
||||
##### LIBGL_COMMENTS
|
||||
Comments in shaders are kept (also for generated shaders by fpe_shaders)
|
||||
* 0 : Default, no comments in shaders sent to GLES Hardware
|
||||
* 1 : Comments are left in Shaders sent to GLES Hardware
|
||||
|
||||
##### LIBGL_DEFAULTWRAP
|
||||
Hack to define default WRAP mode for texture
|
||||
* 0 : Default wrap mode is GL_REPEAT (normal OpenGL behavour): default on NPOT hardware
|
||||
* 1 : Default wrap mode is GL_CLAMP_TO_EDGE: default on limited NPOT or non-NPOT hardware
|
||||
* 2 : Default wrap mode is GL_CLAMP_TO_EDGE, enforced (not advised)
|
||||
|
||||
##### LIBGL_FBOUNBIND
|
||||
Workaround on FBO where a bond texture is used for drawing
|
||||
* 0 : Disabled (Default for all other configuration)
|
||||
* 1 : Enabled (Default on ARM and PowerVR hardware)
|
||||
|
||||
##### LIBGL_FBOFORCETEX
|
||||
For the Color Attachment 0 to be a Texture2D (even if program attachs a Renderbuffer) => may speedup glBlitFramebuffer if used
|
||||
* 0 : Don't force (allow Renderbuffer to be used on color attachments)
|
||||
* 1 : Default: For Color Attachment 0 of FBO to be a texture
|
||||
|
||||
##### LIBGL_BLITFULLSCREEN
|
||||
Hack to trigger a SwapBuffers when a Full Framebuffer Blit on default FBO is done
|
||||
* 0 : Don't force
|
||||
* 1 : Default: Activate the hack (usefull with Wine/D3D)
|
||||
|
||||
##### LIBGL_NOARBPROGRAM
|
||||
Don't expose ARB Program extensions (GL_ARB_vertex_program, GL_ARB_fragment_program and GL_EXT_program_parameters)
|
||||
* 0 : Default: expose the ARB Program extensions
|
||||
* 1 : Don't expose the extensions
|
||||
|
||||
##### LIBGL_FBO
|
||||
Hack: define custom dimension for FBO (only used with LIBGL_FBO=2)
|
||||
* WxH : Define FBO of WxH size (ex: LIBGL_FBO=1280x720)
|
||||
|
||||
##### LIBGL_NOTEXARRAY
|
||||
Hack to force using discrete Texture instead of Array in all shader
|
||||
* 0 : Default: Array of texture is used in shaders (not in FPE generated ones)
|
||||
* 1 : Individual texture are forced in shaders (shaders may fail to compile if array are accessed by indice)
|
||||
|
||||
##### LIBGL_LOGSHADERERROR
|
||||
Log to the console Shader Compile error, with initial and ShaderConv'd source of the shader
|
||||
* 0 : Default, don't log
|
||||
* 1 : Log Shader Compilation Errors
|
||||
|
||||
##### LIBGL_SHADERNOGLES
|
||||
Don't use GL_ES part in shaders
|
||||
* 0 : Default, let GL_ES part in shader
|
||||
* 1 : Remove the GL_ES part in shader (useful for Löve for example)
|
||||
|
||||
##### LIBGL_NODEPTHTEX
|
||||
Disable the use of Depth texture
|
||||
* 0 : Default, Use Depth Texture if supported by Hardware
|
||||
* 1 : Disable the use of Depth Texture (renderbuffer will be used in FBO)
|
||||
|
||||
##### LIBGL_FLOAT
|
||||
Expose support for FLOAT and HALF_FLOAT Texture support (and has attachment to FBO)
|
||||
* 0 : Don't exposed, even if supported in hardware
|
||||
* 1 : Default, exposed what is supported by hardware
|
||||
* 2 : Force exposed, even if no supported (will be emulated has GL_UNSIGNED_BYTE if not supported)
|
||||
|
||||
##### LIBGL_GLXRECYCLE
|
||||
Recycle EGLSurface per Drawable, instead of destroying them
|
||||
* 0 : Default, don't recycle
|
||||
* 1 : Don't destroy EGLSurface, per reused them per drawable (can fix EGL_BAD_ALLOC error). EGLSurface are never destroyed in this mode for now.
|
||||
|
||||
##### LIBGL_NOCLEAN
|
||||
Debug: don't clean GLContext when they are destroy
|
||||
* 0 : Default, clean GLContext
|
||||
* 1 : Don't clean GLContext
|
||||
|
||||
##### LIBGL_EGL
|
||||
Define EGL lib to use. Default folder are the standard one for dynamic library loading (LD_LIBRARY_PATH and friend) plus "/opt/vc/lib/", /usr/local/lib/" and "/usr/lib/".
|
||||
* by default try to use libbrcmEGL and libEGL
|
||||
* filename: try to load from the defaults folder (don't forget to use complete filename, with ".so" extension). If not found/loaded, default one will be tried.
|
||||
* /path/to/filename: try to use exact path/filename. If not found/loaded, default one will be tried.
|
||||
|
||||
##### LIBGL_GLES
|
||||
Define GLES(2) lib to use. Default folder are the standard one for dynamic library loading (LD_LIBRARY_PATH and friend) plus "/opt/vc/lib/", /usr/local/lib/" and "/usr/lib/". Be sure to point to correct GLES library depending on wich GLES backend you are using.
|
||||
* by default try to use libGLESv1_CM, libGLES_CM or libbrcmGLESv1_CM for GLES1.1 and libGLESv2_CM, libGLESv2 or libbrcmGLESv2 for GLES2 backend
|
||||
* filename: try to load from the defaults folder (don't forget to use complete filename, with ".so" extension). If not found/loaded, default one will be tried.
|
||||
* /path/to/filename: try to use exact path/filename. If not found/loaded, default one will be tried.
|
||||
|
||||
##### LIBGL_DBGSHADERCONV
|
||||
Log to the console all shaders before and after conversion
|
||||
* 0 : Default: don't log anything
|
||||
* 1 : Log Vertex Shader
|
||||
* 2 : Log Framegent Shader
|
||||
* 4 : Log Shaders before going to Shaderconv
|
||||
* 8 : Log Shaders after going to Shaderconv
|
||||
Note that you can combine (logical or state. So 14 will be only Fragment shader before and after shaderconv)
|
||||
Note also that if neither Fragment and Vertex are defined, both will be selected. Same for Before and After.
|
||||
At last, the value "1" will be changed to "15", to log everything.
|
||||
|
||||
##### LIBGL_NOPSA
|
||||
Disable the use of the Precompiled Shader Archive
|
||||
* 0 : Default: use (and save) the PSA (it's saved on $HOME/.gl4es.psa on linux)
|
||||
* 1 : Don't use PSA.
|
||||
|
||||
##### LIBGL_PSA_FOLDER
|
||||
Set a custom path for Precompile Shader Archive
|
||||
* XXXXX : set that path. Archive will be saved at XXXXX/.gl4es.psa
|
||||
|
||||
##### LIBGL_USEVBO
|
||||
Usage of VBO in certain cases. Only for GLES2+. The 2 and 3 mode are experimental and will probably be slower anyway.
|
||||
* 0 : Disable the use of VBO.
|
||||
* 1 : Default: Use VBO when possible (for Arrays VBO or glList)
|
||||
* 2 : Use VBO when possible (and also on `glLockArrays`).
|
||||
* 3 : Use VBO when possible (and special case on `glLockArrays` for idTech3 engine games).
|
||||
|
||||
##### LIBGL_NOES2COMPAT
|
||||
Don't expose GLX_EXT_create_context_es2_profile extension
|
||||
* 0 : Extension is there
|
||||
* 1 : Don't expose the extension: for SDL2, use it with SDL_VIDEO_GL_DRIVER and SDL_VIDEO_EGL_DRIVER to use GLESv2 driver directly
|
||||
|
||||
##### LIBGL_NOINTOVLHACK
|
||||
Disable the hack in shader converter to define overloaded function with int
|
||||
* 0 : Default: use the hack
|
||||
* 1 : Don't use it (some driver / PVRCapture don't like it much).
|
||||
|
||||
##### LIBGL_GLXNATIVE
|
||||
Disable the filtering of GLXConfig by NATIVE_TYPE
|
||||
* 0 : Default, GLX_X_NATIVE_TYPE attribute are taken into account
|
||||
* 1 : Don't filter GLXConfig by GLX_X_NATIVE_TYPE
|
||||
|
||||
##### LIBGL_NOSHADERLOD
|
||||
Disable GL_EXT_shader_texture_lod
|
||||
* 0 : Default, use the extension if present
|
||||
* 1 : Disable the use of the extension (using crude fallback)
|
||||
|
||||
##### LIBGL_NORMALIZE
|
||||
Force normals to be normliazed in FPE
|
||||
* 0 : Default, don't force normalizations
|
||||
* 1 : Force normalization on normals on FPE, even when it's disabled (workaround for a bug that prevent colors on Minecraft 1.16+)
|
||||
|
||||
###### LIBGL_BLITFB0
|
||||
Blit to FB 0 force a SwapBuffer
|
||||
* 0 : Default, don't force a SwapBuffer when glBlitFramebuffer to draw fb0 is used (unless the full FB0 if blitted)
|
||||
* 1 : Force a SwapBuffer each time glBlitFramebuffer on FB0 is used (can help some windowed Wine games)
|
||||
|
||||
###### LIBGL_DEEPBIND
|
||||
Use RTLD_DEEPBIND when loading EGL and GLES library
|
||||
* 0 : Default except on PYRA, use RTLD_DEEPBIND when loading EGL/GLES libraries
|
||||
* 1 : Default only on PYRA, don't use RTLD_DEEPBIND when loading EGL/GLES libraries
|
||||
Reference in New Issue
Block a user