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* egl: fix KHR_partial_update without EXT_buffer_ageChia-I Wu2019-02-121-1/+6
| | | | | | | | EGL_BUFFER_AGE_EXT can be queried without EXT_buffer_age. Signed-off-by: Chia-I Wu <[email protected]> Acked-by: Lionel Landwerlin <[email protected]> Reviewed-by: Eric Engestrom <[email protected]>
* egl: use coherent variable namesEric Engestrom2019-02-061-29/+29
| | | | | | | | | | | | | | | | | `EGLDisplay` variables (the opaque Khronos type) have mostly been consistently called `dpy`, as this is the name used in the Khronos specs. However, `_EGLDisplay` variables (our internal struct) have been randomly called `dpy` when there was no local variable clash with `EGLDisplay`s, and `disp` otherwise. Let's be consistent and use `dpy` for the Khronos type, and `disp` for our struct. Signed-off-by: Eric Engestrom <[email protected]> Acked-by: Emil Velikov <[email protected]> Acked-by: Eric Anholt <[email protected]>
* egl: add missing includesEric Engestrom2019-01-111-0/+2
| | | | | Signed-off-by: Eric Engestrom <[email protected]> Acked-by: Emil Velikov <[email protected]>
* egl: implement EXT_surface_SMPTE2086_metadata and EXT_surface_CTA861_3_metadataTapani Pälli2018-08-201-0/+169
| | | | | | | | | | | | | | | | | Patch implements common bits for EXT_surface_SMPTE2086_metadata and EXT_surface_CTA861_3_metadata extensions by adding new required attributes and eglQuerySurface + eglSurfaceAttrib changes. Currently none of the drivers are utilizing this data but this patch is enabler in getting there. v2: don't enable extension globally, should be only enabled by EGL drivers that can transfer metadata to the window system (Jason) use EGLint instead of uint16_t (Eric) Signed-off-by: Ville Syrjälä <[email protected]> Signed-off-by: Tapani Pälli <[email protected]> Reviewed-by: Eric Engestrom <[email protected]>
* egl/main: Add bits for EGL_KHR_mutable_render_bufferChad Versace2018-08-071-3/+56
| | | | | | | | A follow-up patch enables EGL_KHR_mutable_render_buffer for Android. This patch is separate from the Android patch because I think it's easier to review the platform-independent bits separately. Reviewed-by: Tapani Pälli <[email protected]>
* egl: Simplify queries for EGL_RENDER_BUFFERChad Versace2018-08-071-3/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There exist *two* queryable EGL_RENDER_BUFFER states in EGL: eglQuerySurface(EGL_RENDER_BUFFER) and eglQueryContext(EGL_RENDER_BUFFER). These changes eliminate potentially very fragile code in the upcoming EGL_KHR_mutable_render_buffer implementation. * eglQuerySurface(EGL_RENDER_BUFFER) The implementation of eglQuerySurface(EGL_RENDER_BUFFER) contained abstruse logic which required comprehending the specification complexities of how the two EGL_RENDER_BUFFER states interact. The function sometimes returned _EGLContext::WindowRenderBuffer, sometimes _EGLSurface::RenderBuffer. Why? The function tried to encode the actual logic from the EGL spec. When did the function return which variable? Go study the EGL spec, hope you understand it, then hope Mesa mutated the EGL_RENDER_BUFFER state in all the correct places. Have fun. To simplify eglQuerySurface(EGL_RENDER_BUFFER), and to improve confidence in its correctness, flatten its indirect logic. For pixmap and pbuffer surfaces, simply return a hard-coded literal value, as the spec suggests. For window surfaces, simply return _EGLSurface::RequestedRenderBuffer. Nothing difficult here. * eglQueryContext(EGL_RENDER_BUFFER) The implementation of this suffered from the same issues as eglQuerySurface, and the solution is the same. confidence in its correctness, flatten its indirect logic. For pixmap and pbuffer surfaces, simply return a hard-coded literal value, as the spec suggests. For window surfaces, simply return _EGLSurface::ActiveRenderBuffer. Reviewed-by: Tapani Pälli <[email protected]>
* egl: deduplicate swap interval clamping logicEric Engestrom2017-08-011-18/+1
| | | | | | | Signed-off-by: Eric Engestrom <[email protected]> Reviewed-by: Daniel Stone <[email protected]> Reviewed-by: Emil Velikov <[email protected]> Reviewed-by: Tapani Pälli <[email protected]>
* egl: fold _eglError() + return EGL_FALSEEmil Velikov2017-06-261-50/+24
| | | | | | | | | | | The function _eglError() already explicitly returns EGL_FALSE, explicitly to simplify the callers. Make use of it. While EGL_FALSE is numerically identical to false, NULL, EGL_NO_FOO, storage is not the same so we cannot use it for "everything". Signed-off-by: Emil Velikov <[email protected]> Reviewed-by: Eric Engestrom <[email protected]>
* egl/android: support for EGL_KHR_partial_updateHarish Krupo2017-06-111-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds support for the EGL_KHR_partial_update extension for android platform. It passes 36/37 tests in dEQP for EGL_KHR_partial_update. 1 test not supported. v2: add fallback for eglSetDamageRegionKHR (Tapani) v3: The native_window_set_surface_damage call is available only from Android version 6.0. Reintroduce the ANDROID_VERSION guard and advertise extension only if version is >= 6.0. (Emil Velikov) v4: use newly introduced ANDROID_API_LEVEL guard rather than ANDROID_VERSION guard to advertise the extension.The extension is advertised only if ANDROID_API_LEVEL >= 23 (Android 6.0 or greater). Add fallback function for platforms other than Android. Fix possible math overflow. (Emil Velikov) Return immediately when n_rects is 0. Place function's entrypoint in alphabetical order. (Eric Engestrom) v5: Replace unnecessary calloc with malloc (Eric) Check for BAD_ALLOC error (Emil) Check for error in native_window_set_damage_region. (Emil, Tapani, Eric). Signed-off-by: Harish Krupo <[email protected]> Reviewed-by: Emil Velikov <[email protected]> Reviewed-by: Eric Engestrom <[email protected]> Reviewed-by: Tapani Pälli <[email protected]>
* egl: fix _eglQuerySurface in EGL_BUFFER_AGE_EXT caseTapani Pälli2017-06-091-1/+5
| | | | | | | | | | | | | | | | | | Specification states that in case of error, value should not be written, patch changes buffer age queries to return -1 in case of error so that we can skip changing the value. In addition, small change to droid_query_buffer_age to return 0 in case buffer does not have a back buffer available. Fixes: dEQP-EGL.functional.negative_partial_update.not_postable_surface Signed-off-by: Tapani Pälli <[email protected]> Reviewed-by: Eric Engestrom <[email protected]> Reviewed-by: Emil Velikov <[email protected]> Reviewed-by: Chad Versace <[email protected]> Cc: [email protected]
* egl: Emit error when EGLSurface is lostChad Versace2017-05-041-0/+1
| | | | | | | | | | | | | | | | | | | | | | Add a new bool, _EGLSurface::Lost, and check it in eglMakeCurrent and eglSwapBuffers. The EGL 1.5 spec says that those functions emit errors when the native surface is no longer valid. This patch just updates core EGL. No driver sets _EGLSurface::Lost yet. I discovered that Mesa failed to detect lost surfaces while debugging an Android CTS camera test, android.hardware.camera2.cts.RobustnessTest#testAbandonRepeatingRequestSurface. This patch doesn't fix the test though, though, because the test expects EGL_BAD_SURFACE when the surface becomes lost, and this patch actually complies with the EGL spec. If I interpreted the EGL spec correctly, EGL_BAD_NATIVE_WINDOW or EGL_BAD_CURRENT_SURFACE is the correct error. Cc: [email protected] Cc: Tomasz Figa <[email protected]> Cc: Tapani Pälli <[email protected]> Reviewed-by: Nicolas Boichat <[email protected]> Reviewed-by: Emil Velikov <[email protected]>
* egl: add missing error-checking to eglReleaseTexImage()Eric Engestrom2016-11-161-3/+40
| | | | | Signed-off-by: Eric Engestrom <[email protected]> Reviewed-by: Tapani Pälli <[email protected]>
* egl: set preserved behavior for surface only if config supports itTapani Pälli2016-10-271-1/+5
| | | | | | | | | | | | | | Otherwise we can end up with mismatching behavior between config and surface when client queries surface attributes. As example, configs for DRI3 do not support preserved behavior but here we were setting preserved behavior for pixmap and pbuffer. Signed-off-by: Tapani Pälli <[email protected]> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98326 Cc: "12.0 13.0" <[email protected]> Reviewed-by: Eric Engestrom <[email protected]> Reviewed-by: Chad Versace <[email protected]> Tested-by: Mark Janes <[email protected]>
* egl: fix type mismatch error type in _eglInitSurfaceTapani Pälli2016-10-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | EGL spec defines EGL_BAD_MATCH for windows, pixmaps and pbuffers in case where user creates a surface but config does not support rendering to such surface type. Following quotes are from EGL 1.5 spec 3.5 "Rendering Surfaces" : for eglCreatePlatformWindowSurface, eglCreateWindowSurface: "If config does not support rendering to windows (the EGL_SURFACE_TYPE attribute does not contain EGL_WINDOW_BIT ), an EGL_BAD_MATCH error is generated." for eglCreatePbufferSurface: "If config does not support pbuffers, an EGL_BAD_MATCH error is generated." for eglCreatePlatformPixmapSurface, eglCreatePixmapSurface: "If config does not support rendering to pixmaps (the EGL_SURFACE_TYPE attribute does not contain EGL_PIXMAP_BIT ), an EGL_BAD_MATCH error is generated." Fixes following dEQP test: dEQP-EGL.functional.negative_api.create_pbuffer_surface Signed-off-by: Tapani Pälli <[email protected]> Reviewed-by: Eric Engestrom <[email protected]>
* egl: Fix the bad surface attributes combination checking for pbuffers. (v3)Guillaume Charifi2016-07-071-21/+15
| | | | | | | | | | | | | | | | | Fixes a regression induced by commit a0674ce5c41903ccd161e89abb149621bfbc40d2: When EGL_TEXTURE_FORMAT and EGL_TEXTURE_TARGET were both specified (and both != EGL_NO_TEXTURE), an error was instantly triggered, before the other one had even a chance to be checked, which is obviously not the intended behaviour. v2: Full commit hash, remove useless variables. v3: [chadv] Add Fixes footers. Fixes: piglit "spec/egl 1.4/eglcreatepbuffersurface and then glclear" Fixes: piglit "spec/egl 1.4/largest possible eglcreatepbuffersurface and then glclear" Signed-off-by: Guillaume Charifi <[email protected]> Reviewed-by: Frank Binns <[email protected]> Reviewed-by: Chad Versace <[email protected]>
* egl: Account for default values of texture target and formatPlamena Manolova2016-06-021-0/+6
| | | | | | | | | | When validating attributes during surface creation we should account for the default values of texture target and format (EGL_NO_TEXTURE) since the user is not obligated to explicitly set both via the attribute list passed to eglCreatePbufferSurface. Signed-off-by: Plamena Manolova <[email protected]> Reviewed-by: Anuj Phogat <[email protected]>
* egl: Additional attribute validation for eglCreatePbufferSurfacePlamena Manolova2016-05-261-0/+13
| | | | | | | | | | | | | eglCreatePbufferSurface should generate an EGL_BAD_MATCH error if: 1: The EGL_TEXTURE_FORMAT attribute is EGL_NO_TEXTURE and EGL_TEXTURE_TARGET is something other than EGL_NO_TEXTURE 2: EGL_TEXTURE_FORMAT is something other than EGL_NO_TEXTURE and EGL_TEXTURE_TARGET is EGL_NO_TEXTURE. This fixes the dEQP-EGL.functional.negative_api.create_pbuffer_surface test. Signed-off-by: Plamena Manolova <[email protected]> Reviewed-by: Ben Widawsky <[email protected]>
* egl: support EGL_LARGEST_PBUFFER in eglCreatePbufferSurface(...)Daniel Czarnowski2016-03-181-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | Patch provides a default for a set pbuffer surface size when EGL_LARGEST_PBUFFER is used by the client. MIN2 macro is moved to egldefines so that it can be shared. Fixes following Piglit test: egl-create-largest-pbuffer-surface From EGL 1.5 spec: "Use EGL_LARGEST_PBUFFER to get the largest available pbuffer when the allocation of the pbuffer would otherwise fail." Currently there exists no API to query largest available pixmap size using xlib or xcb so right now this seems most straightforward way to ensure that we fulfill above API and also we don't attempt to allocate 'too big' pixmap which might succeed on server side but not work in practice when driver starts to use it as a texture. v2: add more explanation about the change (Emil) Signed-off-by: Matt Roper <[email protected]> Cc: "11.0 11.1" <[email protected] Reviewed-by: Emil Velikov <[email protected]>
* egl: Add eglQuerySurface surface type check for EGL_LARGEST_PBUFFER attribFrank Binns2015-08-041-1/+2
| | | | | | | | | | | | | | | | | | | Calling eglQuerySurface on a window or pixmap with the EGL_LARGEST_PBUFFER attribute resulted in the contents of the 'value' parameter being modified. This is the wrong behaviour according to the EGL spec, which states: "Querying EGL_LARGEST_PBUFFER for a pbuffer surface returns the same attribute value specified when the surface was created with eglCreatePbufferSurface. For a window or pixmap surface, the contents of value are not modified." Avoid this from happening by checking that the surface type is EGL_PBUFFER_BIT before modifying the contents of the parameter. Cc: <[email protected]> Signed-off-by: Frank Binns <[email protected]> Reviewed-by: Emil Velikov <[email protected]> Reviewed-by: Eric Anholt <[email protected]>
* egl: implement EGL_KHR_gl_colorspace (v2)Marek Olšák2015-07-221-0/+24
| | | | | | v2: add missing "break" Reviewed-by: Emil Velikov <[email protected]>
* egl: Remove skeleton implementation of EGL_MESA_screen_surfaceAdam Jackson2015-05-111-55/+0
| | | | | | | | No backend wires this up to anything, and the extension spec has been marked obsolete for 4+ years. Reviewed-by: Marek Olšák <[email protected]> Signed-off-by: Adam Jackson <[email protected]>
* dri_interface: Update __DRItexBufferExtensionRec to version 3Emil Velikov2014-04-281-0/+11
| | | | | | | | | | | | | | | | | | | | With commit e59fa4c46c8("dri2: release texture image.") we updated the extension without bumping the version number. The patch itself added an interface required to enable texture_from_pixmap on certain platforms. The new code was effectively never build, as it depended on __DRI_TEX_BUFFER_VERSION >= 3, which never came to be in upstream mesa. This commit bumps the version number, drops the __DRI_TEX_BUFFER_VERSION checks and resolves all the build conflicts. Additionally it add a version check as egl and dri3, as require version 2 of the extension which does not have the releaseTexBuffer hook. Cc: Juan Zhao <[email protected]> Cc: Kristian Høgsberg <[email protected]> Signed-off-by: Emil Velikov <[email protected]> Reviewed-by: Ian Romanick <[email protected]> Reviewed-by: Kristian Høgsberg <[email protected]>
* Revert "egl: Unhide functionality in _eglInitSurface()"Chia-I Wu2014-02-191-3/+1
| | | | | | | This reverts commit 498d10e230663f8604d00608cae6324f779c9cdd. _eglInitResource can and is supposed to be called on subclass objects. Acked-by: Juha-Pekka Heikkila <[email protected]>
* egl: Unhide functionality in _eglInitSurface()Juha-Pekka Heikkila2014-02-071-1/+3
| | | | | | | | | | _eglInitResource() was used to memset entire _EGLSurface by writing more than size of pointed target. This does work as long as Resource is the first element in _EGLSurface, this patch fixes such dependency. Signed-off-by: Juha-Pekka Heikkila <[email protected]> Reviewed-by: Brian Paul <[email protected]>
* s/Tungsten Graphics/VMware/José Fonseca2014-01-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tungsten Graphics Inc. was acquired by VMware Inc. in 2008. Leaving the old copyright name is creating unnecessary confusion, hence this change. This was the sed script I used: $ cat tg2vmw.sed # Run as: # # git reset --hard HEAD && find include scons src -type f -not -name 'sed*' -print0 | xargs -0 sed -i -f tg2vmw.sed # # Rename copyrights s/Tungsten Gra\(ph\|hp\)ics,\? [iI]nc\.\?\(, Cedar Park\)\?\(, Austin\)\?\(, \(Texas\|TX\)\)\?\.\?/VMware, Inc./g /Copyright/s/Tungsten Graphics\(,\? [iI]nc\.\)\?\(, Cedar Park\)\?\(, Austin\)\?\(, \(Texas\|TX\)\)\?\.\?/VMware, Inc./ s/TUNGSTEN GRAPHICS/VMWARE/g # Rename emails s/[email protected]/[email protected]/ s/[email protected]/[email protected]/g s/jrfonseca-at-tungstengraphics-dot-com/jfonseca-at-vmware-dot-com/ s/jrfonseca\[email protected]/[email protected]/g s/keithw\[email protected]/[email protected]/g s/[email protected]/[email protected]/g s/thomas-at-tungstengraphics-dot-com/thellstom-at-vmware-dot-com/ s/[email protected]/[email protected]/ # Remove dead links s@Tungsten Graphics (http://www.tungstengraphics.com)@Tungsten Graphics@g # C string src/gallium/state_trackers/vega/api_misc.c s/"Tungsten Graphics, Inc"/"VMware, Inc"/ Reviewed-by: Brian Paul <[email protected]>
* egl/dri2: Add plumbing for EGL_OPENGL_ES3_BIT_KHRChad Versace2013-01-151-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes error EGL_BAD_ATTRIBUTE in the tests below on Intel Sandybridge: * piglit egl-create-context-verify-gl-flavor, testcase OpenGL ES 3.0 * gles3conform, revision 19700, when runnning GL3Tests with -fbo This plumbing is added in order to comply with the EGL_KHR_create_context spec. According to the EGL_KHR_create_context spec, it is illegal to call eglCreateContext(EGL_CONTEXT_MAJOR_VERSION_KHR=3) with a config whose EGL_RENDERABLE_TYPE does not contain the EGL_OPENGL_ES3_BIT_KHR. The pertinent portion of the spec is quoted below; the key word is "respectively". * If <config> is not a valid EGLConfig, or does not support the requested client API, then an EGL_BAD_CONFIG error is generated (this includes requesting creation of an OpenGL ES 1.x, 2.0, or 3.0 context when the EGL_RENDERABLE_TYPE attribute of <config> does not contain EGL_OPENGL_ES_BIT, EGL_OPENGL_ES2_BIT, or EGL_OPENGL_ES3_BIT_KHR respectively). To create this patch, I searched for all the ES2 bit plumbing by calling `git grep "ES2_BIT\|DRI_API_GLES2" src/egl`, and then at each location added a case for ES3. Signed-off-by: Chad Versace <[email protected]> Reviewed-by: Ian Romanick <[email protected]>
* egl: Add extension infrastructure for EGL_EXT_buffer_ageKristian Høgsberg2013-01-041-0/+8
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* egl: add EGL_NV_post_sub_bufferFredrik Höglund2011-12-201-0/+17
| | | | | | | | | v2: Handle EGL_POST_SUB_BUFFER_SUPPORTED_NV in _eglParseSurfaceAttribList() Signed-off-by: Fredrik Höglund <[email protected]> [olv: remove #ifdef checks]
* egl: make pixmaps and pbuffers EGL_BUFFER_PRESERVEDChia-I Wu2011-07-291-1/+3
| | | | eglSwapBuffers is no-op to these surface types anyway.
* egl: add copyright noticesChia-I Wu2011-07-021-0/+30
| | | | | The list of copyright holders could be incomplete. Please update directly or notify me if your name is missing.
* egl: Add reference count for resources.Chia-I Wu2010-10-231-2/+1
| | | | | This is a really simple mechanism. There is no atomicity and the caller is expected to hold the display lock.
* egl: Move fallback routines to eglfallbacks.c.Chia-I Wu2010-10-221-118/+0
| | | | We do not want them to be all over the places.
* egl: Access config attributes directly.Chia-I Wu2010-10-141-7/+7
| | | | Replace SET_CONFIG_ATTRIB/GET_CONFIG_ATTRIB by direct dereferences.
* egl: Add checks for EGL_MESA_screen_surface.Chia-I Wu2010-07-311-11/+55
| | | | | This allows Mesa EGL to be compiled with eglext.h that does not define EGL_MESA_screen_surface.
* egl: Implement EGL_NOK_texture_from_pixmapKristian Høgsberg2010-05-141-4/+19
| | | | | | | This extension allows a color buffer to be used for both rendering and texturing. EGL allows the use of color buffers of pbuffer drawables for texturing, this extension extends this to allow the use of color buffers of pixmaps too.
* egl: Clean up surface attributes.Chia-I Wu2010-01-311-44/+109
| | | | | | Add missing attributes and use correct types in _EGLSurface. Remove ifdef tests that serve no purpose. Update _eglQuerySurface and _eglSurfaceAttrib for missing queries and checks.
* egl: Initialize display resources with their display.Chia-I Wu2010-01-311-1/+2
| | | | | | | Change _eglInitSurface, _eglInitContext, and _eglInitImage to take an _EGLDisplay instead of an _EGLDriver. This is a more natural form, and plus, the display encodes information such as the extensions supported that might be required for attribute list parsing.
* egl: Refactor _eglInitSurface.Chia-I Wu2010-01-311-141/+146
| | | | Refactor attribute list parsing code to _eglParseSurfaceAttribList.
* egl: Remove code blocks that are commented out.Chia-I Wu2010-01-311-45/+3
| | | | | | They are either unit tests or to demonstrate how functions are supposed to be used. The unit test is outdated and it should be better to take a look at any of the working drivers to see how a function is used.
* egl: Clean up header inclusions.Chia-I Wu2010-01-301-1/+1
| | | | Mainly to remove eglcurrent.h and egldisplay.h from eglglobals.h.
* egl: Remove unnecessary headers.Vinson Lee2010-01-281-1/+0
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* egl: Native types are renamed in EGL 1.3.Chia-I Wu2010-01-251-3/+3
| | | | Rename Native*Type to EGLNative*Type.
* egl: Make surfaces and contexts resources.Chia-I Wu2010-01-241-70/+0
| | | | | Turn _EGLSurface and _EGLContext into _EGLResource so that they can be managed uniformly.
* egl: Move surface functions in egldisplay.[ch] to eglsurface.[ch]Chia-I Wu2010-01-241-0/+70
| | | | | Move functions to where they should be. There should be no real change here.
* egl: Rework eglSwapInterval.Chia-I Wu2009-10-151-5/+22
| | | | | | | This adds error checking to eglSwapInterval and clamps the swap interval. Signed-off-by: Chia-I Wu <[email protected]>
* egl: Remove eglhash.c and eglhash.h.Chia-I Wu2009-08-181-1/+0
| | | | Signed-off-by: Chia-I Wu <[email protected]>
* egl: Some per-driver data should be per-display.Chia-I Wu2009-08-181-1/+1
| | | | | | | Move some fields of _EGLDriver to _EGLDisplay. It also becomes unnecessary to pass _EGLDisplay to drivers when _eglMain is called. Signed-off-by: Chia-I Wu <[email protected]>
* egl: Overhaul driver API.Chia-I Wu2009-08-181-92/+39
| | | | | | | | | | | | The motivation is so that drivers do not need to look up and check for bad display, context, and etc. It also becomes unnecessary for drivers to call the link functions. This commit makes eglapi.[ch] do the lookup and check. As a result, the driver API is overhauled, and almost all sources and drivers need update. The updates are mainly find and replace with human brains. Signed-off-by: Chia-I Wu <[email protected]>
* egl: Correct the default values of surface attributes.Chia-I Wu2009-08-031-1/+2
| | | | | | | EGL_TEXTURE_FORMAT and EGL_TEXTURE_TARGET should default to EGL_NO_TEXTURE. Signed-off-by: Chia-I Wu <[email protected]>
* egl: Replace IsBound by a pointer to the binding.Chia-I Wu2009-08-031-1/+1
| | | | | | | | | IsBound tells if a context or surface is current. What it does not tell is, to which thread a context is current, or to which context a surface is current. This commit replaces IsBound by a pointer to the binding thread or context. Signed-off-by: Chia-I Wu <[email protected]>
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