1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/gl/GLContextProviderEGL.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,894 @@
1.4 +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "mozilla/ArrayUtils.h"
1.10 +
1.11 +#include "GLContextEGL.h"
1.12 +
1.13 +#if defined(XP_UNIX)
1.14 +
1.15 +#ifdef MOZ_WIDGET_GTK
1.16 +#include <gdk/gdkx.h>
1.17 +// we're using default display for now
1.18 +#define GET_NATIVE_WINDOW(aWidget) (EGLNativeWindowType)GDK_WINDOW_XID((GdkWindow *) aWidget->GetNativeData(NS_NATIVE_WINDOW))
1.19 +#elif defined(MOZ_WIDGET_QT)
1.20 +#define GET_NATIVE_WINDOW(aWidget) (EGLNativeWindowType)(aWidget->GetNativeData(NS_NATIVE_SHAREABLE_WINDOW))
1.21 +#elif defined(MOZ_WIDGET_GONK)
1.22 +#define GET_NATIVE_WINDOW(aWidget) ((EGLNativeWindowType)aWidget->GetNativeData(NS_NATIVE_WINDOW))
1.23 +#include "HwcComposer2D.h"
1.24 +#include "libdisplay/GonkDisplay.h"
1.25 +#endif
1.26 +
1.27 +#if defined(ANDROID)
1.28 +/* from widget */
1.29 +#if defined(MOZ_WIDGET_ANDROID)
1.30 +#include "AndroidBridge.h"
1.31 +#include "nsSurfaceTexture.h"
1.32 +#endif
1.33 +
1.34 +#include <android/log.h>
1.35 +#define LOG(args...) __android_log_print(ANDROID_LOG_INFO, "Gonk" , ## args)
1.36 +
1.37 +# if defined(MOZ_WIDGET_GONK)
1.38 +# include "cutils/properties.h"
1.39 +# include <ui/GraphicBuffer.h>
1.40 +
1.41 +using namespace android;
1.42 +# endif
1.43 +
1.44 +#endif
1.45 +
1.46 +#define GLES2_LIB "libGLESv2.so"
1.47 +#define GLES2_LIB2 "libGLESv2.so.2"
1.48 +
1.49 +#elif defined(XP_WIN)
1.50 +
1.51 +#include "nsIFile.h"
1.52 +
1.53 +#define GLES2_LIB "libGLESv2.dll"
1.54 +
1.55 +#ifndef WIN32_LEAN_AND_MEAN
1.56 +#define WIN32_LEAN_AND_MEAN 1
1.57 +#endif
1.58 +
1.59 +#include <windows.h>
1.60 +
1.61 +// a little helper
1.62 +class AutoDestroyHWND {
1.63 +public:
1.64 + AutoDestroyHWND(HWND aWnd = nullptr)
1.65 + : mWnd(aWnd)
1.66 + {
1.67 + }
1.68 +
1.69 + ~AutoDestroyHWND() {
1.70 + if (mWnd) {
1.71 + ::DestroyWindow(mWnd);
1.72 + }
1.73 + }
1.74 +
1.75 + operator HWND() {
1.76 + return mWnd;
1.77 + }
1.78 +
1.79 + HWND forget() {
1.80 + HWND w = mWnd;
1.81 + mWnd = nullptr;
1.82 + return w;
1.83 + }
1.84 +
1.85 + HWND operator=(HWND aWnd) {
1.86 + if (mWnd && mWnd != aWnd) {
1.87 + ::DestroyWindow(mWnd);
1.88 + }
1.89 + mWnd = aWnd;
1.90 + return mWnd;
1.91 + }
1.92 +
1.93 + HWND mWnd;
1.94 +};
1.95 +
1.96 +#else
1.97 +
1.98 +#error "Platform not recognized"
1.99 +
1.100 +#endif
1.101 +
1.102 +#include "mozilla/Preferences.h"
1.103 +#include "gfxUtils.h"
1.104 +#include "gfxFailure.h"
1.105 +#include "gfxASurface.h"
1.106 +#include "gfxPlatform.h"
1.107 +#include "GLContextProvider.h"
1.108 +#include "GLLibraryEGL.h"
1.109 +#include "TextureImageEGL.h"
1.110 +#include "nsDebug.h"
1.111 +#include "nsThreadUtils.h"
1.112 +
1.113 +#include "nsIWidget.h"
1.114 +
1.115 +#include "gfxCrashReporterUtils.h"
1.116 +
1.117 +#include "ScopedGLHelpers.h"
1.118 +#include "GLBlitHelper.h"
1.119 +
1.120 +using namespace mozilla::gfx;
1.121 +
1.122 +#ifdef MOZ_WIDGET_GONK
1.123 +extern nsIntRect gScreenBounds;
1.124 +#endif
1.125 +
1.126 +namespace mozilla {
1.127 +namespace gl {
1.128 +
1.129 +#define ADD_ATTR_2(_array, _k, _v) do { \
1.130 + (_array).AppendElement(_k); \
1.131 + (_array).AppendElement(_v); \
1.132 +} while (0)
1.133 +
1.134 +#define ADD_ATTR_1(_array, _k) do { \
1.135 + (_array).AppendElement(_k); \
1.136 +} while (0)
1.137 +
1.138 +static bool
1.139 +CreateConfig(EGLConfig* aConfig);
1.140 +
1.141 +// append three zeros at the end of attribs list to work around
1.142 +// EGL implementation bugs that iterate until they find 0, instead of
1.143 +// EGL_NONE. See bug 948406.
1.144 +#define EGL_ATTRIBS_LIST_SAFE_TERMINATION_WORKING_AROUND_BUGS \
1.145 + LOCAL_EGL_NONE, 0, 0, 0
1.146 +
1.147 +static EGLint gTerminationAttribs[] = {
1.148 + EGL_ATTRIBS_LIST_SAFE_TERMINATION_WORKING_AROUND_BUGS
1.149 +};
1.150 +
1.151 +static EGLint gContextAttribs[] = {
1.152 + LOCAL_EGL_CONTEXT_CLIENT_VERSION, 2,
1.153 + EGL_ATTRIBS_LIST_SAFE_TERMINATION_WORKING_AROUND_BUGS
1.154 +};
1.155 +
1.156 +static EGLint gContextAttribsRobustness[] = {
1.157 + LOCAL_EGL_CONTEXT_CLIENT_VERSION, 2,
1.158 + //LOCAL_EGL_CONTEXT_ROBUST_ACCESS_EXT, LOCAL_EGL_TRUE,
1.159 + LOCAL_EGL_CONTEXT_RESET_NOTIFICATION_STRATEGY_EXT, LOCAL_EGL_LOSE_CONTEXT_ON_RESET_EXT,
1.160 + EGL_ATTRIBS_LIST_SAFE_TERMINATION_WORKING_AROUND_BUGS
1.161 +};
1.162 +
1.163 +static int
1.164 +next_power_of_two(int v)
1.165 +{
1.166 + v--;
1.167 + v |= v >> 1;
1.168 + v |= v >> 2;
1.169 + v |= v >> 4;
1.170 + v |= v >> 8;
1.171 + v |= v >> 16;
1.172 + v++;
1.173 +
1.174 + return v;
1.175 +}
1.176 +
1.177 +static bool
1.178 +is_power_of_two(int v)
1.179 +{
1.180 + NS_ASSERTION(v >= 0, "bad value");
1.181 +
1.182 + if (v == 0)
1.183 + return true;
1.184 +
1.185 + return (v & (v-1)) == 0;
1.186 +}
1.187 +
1.188 +static void
1.189 +DestroySurface(EGLSurface oldSurface) {
1.190 + if (oldSurface != EGL_NO_SURFACE) {
1.191 + sEGLLibrary.fMakeCurrent(EGL_DISPLAY(),
1.192 + EGL_NO_SURFACE, EGL_NO_SURFACE,
1.193 + EGL_NO_CONTEXT);
1.194 + sEGLLibrary.fDestroySurface(EGL_DISPLAY(), oldSurface);
1.195 + }
1.196 +}
1.197 +
1.198 +static EGLSurface
1.199 +CreateSurfaceForWindow(nsIWidget* widget, const EGLConfig& config) {
1.200 + EGLSurface newSurface = EGL_NO_SURFACE;
1.201 +
1.202 + #ifdef MOZ_ANDROID_OMTC
1.203 + mozilla::AndroidBridge::Bridge()->RegisterCompositor();
1.204 + newSurface = mozilla::AndroidBridge::Bridge()->CreateEGLSurfaceForCompositor();
1.205 + if (newSurface == EGL_NO_SURFACE) {
1.206 + return EGL_NO_SURFACE;
1.207 + }
1.208 + #else
1.209 + MOZ_ASSERT(widget != nullptr);
1.210 + newSurface = sEGLLibrary.fCreateWindowSurface(EGL_DISPLAY(), config, GET_NATIVE_WINDOW(widget), 0);
1.211 + #ifdef MOZ_WIDGET_GONK
1.212 + gScreenBounds.x = 0;
1.213 + gScreenBounds.y = 0;
1.214 + sEGLLibrary.fQuerySurface(EGL_DISPLAY(), newSurface, LOCAL_EGL_WIDTH, &gScreenBounds.width);
1.215 + sEGLLibrary.fQuerySurface(EGL_DISPLAY(), newSurface, LOCAL_EGL_HEIGHT, &gScreenBounds.height);
1.216 + #endif
1.217 + #endif
1.218 + return newSurface;
1.219 +}
1.220 +
1.221 +GLContextEGL::GLContextEGL(
1.222 + const SurfaceCaps& caps,
1.223 + GLContext* shareContext,
1.224 + bool isOffscreen,
1.225 + EGLConfig config,
1.226 + EGLSurface surface,
1.227 + EGLContext context)
1.228 + : GLContext(caps, shareContext, isOffscreen)
1.229 + , mConfig(config)
1.230 + , mSurface(surface)
1.231 + , mSurfaceOverride(EGL_NO_SURFACE)
1.232 + , mContext(context)
1.233 + , mThebesSurface(nullptr)
1.234 + , mBound(false)
1.235 + , mIsPBuffer(false)
1.236 + , mIsDoubleBuffered(false)
1.237 + , mCanBindToTexture(false)
1.238 + , mShareWithEGLImage(false)
1.239 + , mOwnsContext(true)
1.240 +{
1.241 + // any EGL contexts will always be GLESv2
1.242 + SetProfileVersion(ContextProfile::OpenGLES, 200);
1.243 +
1.244 +#ifdef DEBUG
1.245 + printf_stderr("Initializing context %p surface %p on display %p\n", mContext, mSurface, EGL_DISPLAY());
1.246 +#endif
1.247 +#if defined(MOZ_WIDGET_GONK)
1.248 + if (!mIsOffscreen) {
1.249 + mHwc = HwcComposer2D::GetInstance();
1.250 + MOZ_ASSERT(!mHwc->Initialized());
1.251 +
1.252 + if (mHwc->Init(EGL_DISPLAY(), mSurface)) {
1.253 + NS_WARNING("HWComposer initialization failed!");
1.254 + mHwc = nullptr;
1.255 + }
1.256 + }
1.257 +#endif
1.258 +}
1.259 +
1.260 +GLContextEGL::~GLContextEGL()
1.261 +{
1.262 + MarkDestroyed();
1.263 +
1.264 + // Wrapped context should not destroy eglContext/Surface
1.265 + if (!mOwnsContext) {
1.266 + return;
1.267 + }
1.268 +
1.269 +#ifdef DEBUG
1.270 + printf_stderr("Destroying context %p surface %p on display %p\n", mContext, mSurface, EGL_DISPLAY());
1.271 +#endif
1.272 +
1.273 + sEGLLibrary.fDestroyContext(EGL_DISPLAY(), mContext);
1.274 +
1.275 +#if defined(MOZ_WIDGET_GONK) && ANDROID_VERSION < 17
1.276 + if (!mIsOffscreen) {
1.277 + // In ICS, SurfaceFlinger's DisplayHardware::fini() does not destroy the EGLSurface associated with the
1.278 + // native framebuffer. Destroying it causes crashes in the ICS emulator
1.279 + // EGL implementation, specifically because the egl_window_surface_t dtor
1.280 + // calls nativeWindow->cancelBuffer and FramebufferNativeWindow does not initialize
1.281 + // the cancelBuffer function pointer, see bug 986836
1.282 + return;
1.283 + }
1.284 +#endif
1.285 +
1.286 + mozilla::gl::DestroySurface(mSurface);
1.287 +}
1.288 +
1.289 +bool
1.290 +GLContextEGL::Init()
1.291 +{
1.292 +#if defined(ANDROID)
1.293 + // We can't use LoadApitraceLibrary here because the GLContext
1.294 + // expects its own handle to the GL library
1.295 + if (!OpenLibrary(APITRACE_LIB))
1.296 +#endif
1.297 + if (!OpenLibrary(GLES2_LIB)) {
1.298 +#if defined(XP_UNIX)
1.299 + if (!OpenLibrary(GLES2_LIB2)) {
1.300 + NS_WARNING("Couldn't load GLES2 LIB.");
1.301 + return false;
1.302 + }
1.303 +#endif
1.304 + }
1.305 +
1.306 + SetupLookupFunction();
1.307 + if (!InitWithPrefix("gl", true))
1.308 + return false;
1.309 +
1.310 + bool current = MakeCurrent();
1.311 + if (!current) {
1.312 + gfx::LogFailure(NS_LITERAL_CSTRING(
1.313 + "Couldn't get device attachments for device."));
1.314 + return false;
1.315 + }
1.316 +
1.317 + PR_STATIC_ASSERT(sizeof(GLint) >= sizeof(int32_t));
1.318 + mMaxTextureImageSize = INT32_MAX;
1.319 +
1.320 + mShareWithEGLImage = sEGLLibrary.HasKHRImageBase() &&
1.321 + sEGLLibrary.HasKHRImageTexture2D() &&
1.322 + IsExtensionSupported(OES_EGL_image);
1.323 +
1.324 + return true;
1.325 +}
1.326 +
1.327 +bool
1.328 +GLContextEGL::BindTexImage()
1.329 +{
1.330 + if (!mSurface)
1.331 + return false;
1.332 +
1.333 + if (mBound && !ReleaseTexImage())
1.334 + return false;
1.335 +
1.336 + EGLBoolean success = sEGLLibrary.fBindTexImage(EGL_DISPLAY(),
1.337 + (EGLSurface)mSurface, LOCAL_EGL_BACK_BUFFER);
1.338 + if (success == LOCAL_EGL_FALSE)
1.339 + return false;
1.340 +
1.341 + mBound = true;
1.342 + return true;
1.343 +}
1.344 +
1.345 +bool
1.346 +GLContextEGL::ReleaseTexImage()
1.347 +{
1.348 + if (!mBound)
1.349 + return true;
1.350 +
1.351 + if (!mSurface)
1.352 + return false;
1.353 +
1.354 + EGLBoolean success;
1.355 + success = sEGLLibrary.fReleaseTexImage(EGL_DISPLAY(),
1.356 + (EGLSurface)mSurface,
1.357 + LOCAL_EGL_BACK_BUFFER);
1.358 + if (success == LOCAL_EGL_FALSE)
1.359 + return false;
1.360 +
1.361 + mBound = false;
1.362 + return true;
1.363 +}
1.364 +
1.365 +void
1.366 +GLContextEGL::SetEGLSurfaceOverride(EGLSurface surf) {
1.367 + if (Screen()) {
1.368 + /* Blit `draw` to `read` if we need to, before we potentially juggle
1.369 + * `read` around. If we don't, we might attach a different `read`,
1.370 + * and *then* hit AssureBlitted, which will blit a dirty `draw` onto
1.371 + * the wrong `read`!
1.372 + */
1.373 + Screen()->AssureBlitted();
1.374 + }
1.375 +
1.376 + mSurfaceOverride = surf ? (EGLSurface) surf : mSurface;
1.377 + MakeCurrent(true);
1.378 +}
1.379 +
1.380 +bool
1.381 +GLContextEGL::MakeCurrentImpl(bool aForce) {
1.382 + bool succeeded = true;
1.383 +
1.384 + // Assume that EGL has the same problem as WGL does,
1.385 + // where MakeCurrent with an already-current context is
1.386 + // still expensive.
1.387 + if (aForce || sEGLLibrary.fGetCurrentContext() != mContext) {
1.388 + EGLSurface surface = mSurfaceOverride != EGL_NO_SURFACE
1.389 + ? mSurfaceOverride
1.390 + : mSurface;
1.391 + if (surface == EGL_NO_SURFACE) {
1.392 + return false;
1.393 + }
1.394 + succeeded = sEGLLibrary.fMakeCurrent(EGL_DISPLAY(),
1.395 + surface, surface,
1.396 + mContext);
1.397 + if (!succeeded) {
1.398 + int eglError = sEGLLibrary.fGetError();
1.399 + if (eglError == LOCAL_EGL_CONTEXT_LOST) {
1.400 + mContextLost = true;
1.401 + NS_WARNING("EGL context has been lost.");
1.402 + } else {
1.403 + NS_WARNING("Failed to make GL context current!");
1.404 +#ifdef DEBUG
1.405 + printf_stderr("EGL Error: 0x%04x\n", eglError);
1.406 +#endif
1.407 + }
1.408 + }
1.409 + }
1.410 +
1.411 + return succeeded;
1.412 +}
1.413 +
1.414 +bool
1.415 +GLContextEGL::IsCurrent() {
1.416 + return sEGLLibrary.fGetCurrentContext() == mContext;
1.417 +}
1.418 +
1.419 +bool
1.420 +GLContextEGL::RenewSurface() {
1.421 + if (!mOwnsContext) {
1.422 + return false;
1.423 + }
1.424 +#ifndef MOZ_WIDGET_ANDROID
1.425 + MOZ_CRASH("unimplemented");
1.426 + // to support this on non-Android platforms, need to keep track of the nsIWidget that
1.427 + // this GLContext was created for (with CreateForWindow) so that we know what to
1.428 + // pass again to CreateSurfaceForWindow below.
1.429 + // The reason why Android doesn't need this is that it delegates EGLSurface creation to
1.430 + // Java code which is the only thing that knows about our actual widget.
1.431 +#endif
1.432 + // unconditionally release the surface and create a new one. Don't try to optimize this away.
1.433 + // If we get here, then by definition we know that we want to get a new surface.
1.434 + ReleaseSurface();
1.435 + mSurface = mozilla::gl::CreateSurfaceForWindow(nullptr, mConfig); // the nullptr here is where we assume Android.
1.436 + if (mSurface == EGL_NO_SURFACE) {
1.437 + return false;
1.438 + }
1.439 + return MakeCurrent(true);
1.440 +}
1.441 +
1.442 +void
1.443 +GLContextEGL::ReleaseSurface() {
1.444 + if (mOwnsContext) {
1.445 + DestroySurface(mSurface);
1.446 + }
1.447 + mSurface = EGL_NO_SURFACE;
1.448 +}
1.449 +
1.450 +bool
1.451 +GLContextEGL::SetupLookupFunction()
1.452 +{
1.453 + mLookupFunc = (PlatformLookupFunction)sEGLLibrary.mSymbols.fGetProcAddress;
1.454 + return true;
1.455 +}
1.456 +
1.457 +bool
1.458 +GLContextEGL::SwapBuffers()
1.459 +{
1.460 + if (mSurface) {
1.461 +#ifdef MOZ_WIDGET_GONK
1.462 + if (!mIsOffscreen) {
1.463 + if (mHwc) {
1.464 + return mHwc->Render(EGL_DISPLAY(), mSurface);
1.465 + } else {
1.466 + return GetGonkDisplay()->SwapBuffers(EGL_DISPLAY(), mSurface);
1.467 + }
1.468 + } else
1.469 +#endif
1.470 + return sEGLLibrary.fSwapBuffers(EGL_DISPLAY(), mSurface);
1.471 + } else {
1.472 + return false;
1.473 + }
1.474 +}
1.475 +
1.476 +// hold a reference to the given surface
1.477 +// for the lifetime of this context.
1.478 +void
1.479 +GLContextEGL::HoldSurface(gfxASurface *aSurf) {
1.480 + mThebesSurface = aSurf;
1.481 +}
1.482 +
1.483 +already_AddRefed<GLContextEGL>
1.484 +GLContextEGL::CreateGLContext(const SurfaceCaps& caps,
1.485 + GLContextEGL *shareContext,
1.486 + bool isOffscreen,
1.487 + EGLConfig config,
1.488 + EGLSurface surface)
1.489 +{
1.490 + if (sEGLLibrary.fBindAPI(LOCAL_EGL_OPENGL_ES_API) == LOCAL_EGL_FALSE) {
1.491 + NS_WARNING("Failed to bind API to GLES!");
1.492 + return nullptr;
1.493 + }
1.494 +
1.495 + EGLContext eglShareContext = shareContext ? shareContext->mContext
1.496 + : EGL_NO_CONTEXT;
1.497 + EGLint* attribs = sEGLLibrary.HasRobustness() ? gContextAttribsRobustness
1.498 + : gContextAttribs;
1.499 +
1.500 + EGLContext context = sEGLLibrary.fCreateContext(EGL_DISPLAY(),
1.501 + config,
1.502 + eglShareContext,
1.503 + attribs);
1.504 + if (!context && shareContext) {
1.505 + shareContext = nullptr;
1.506 + context = sEGLLibrary.fCreateContext(EGL_DISPLAY(),
1.507 + config,
1.508 + EGL_NO_CONTEXT,
1.509 + attribs);
1.510 + }
1.511 + if (!context) {
1.512 + NS_WARNING("Failed to create EGLContext!");
1.513 + return nullptr;
1.514 + }
1.515 +
1.516 + nsRefPtr<GLContextEGL> glContext = new GLContextEGL(caps,
1.517 + shareContext,
1.518 + isOffscreen,
1.519 + config,
1.520 + surface,
1.521 + context);
1.522 +
1.523 + if (!glContext->Init())
1.524 + return nullptr;
1.525 +
1.526 + return glContext.forget();
1.527 +}
1.528 +
1.529 +EGLSurface
1.530 +GLContextEGL::CreatePBufferSurfaceTryingPowerOfTwo(EGLConfig config,
1.531 + EGLenum bindToTextureFormat,
1.532 + gfxIntSize& pbsize)
1.533 +{
1.534 + nsTArray<EGLint> pbattrs(16);
1.535 + EGLSurface surface = nullptr;
1.536 +
1.537 +TRY_AGAIN_POWER_OF_TWO:
1.538 + pbattrs.Clear();
1.539 + pbattrs.AppendElement(LOCAL_EGL_WIDTH); pbattrs.AppendElement(pbsize.width);
1.540 + pbattrs.AppendElement(LOCAL_EGL_HEIGHT); pbattrs.AppendElement(pbsize.height);
1.541 +
1.542 + if (bindToTextureFormat != LOCAL_EGL_NONE) {
1.543 + pbattrs.AppendElement(LOCAL_EGL_TEXTURE_TARGET);
1.544 + pbattrs.AppendElement(LOCAL_EGL_TEXTURE_2D);
1.545 +
1.546 + pbattrs.AppendElement(LOCAL_EGL_TEXTURE_FORMAT);
1.547 + pbattrs.AppendElement(bindToTextureFormat);
1.548 + }
1.549 +
1.550 + for (size_t i = 0; i < MOZ_ARRAY_LENGTH(gTerminationAttribs); i++) {
1.551 + pbattrs.AppendElement(gTerminationAttribs[i]);
1.552 + }
1.553 +
1.554 + surface = sEGLLibrary.fCreatePbufferSurface(EGL_DISPLAY(), config, &pbattrs[0]);
1.555 + if (!surface) {
1.556 + if (!is_power_of_two(pbsize.width) ||
1.557 + !is_power_of_two(pbsize.height))
1.558 + {
1.559 + if (!is_power_of_two(pbsize.width))
1.560 + pbsize.width = next_power_of_two(pbsize.width);
1.561 + if (!is_power_of_two(pbsize.height))
1.562 + pbsize.height = next_power_of_two(pbsize.height);
1.563 +
1.564 + NS_WARNING("Failed to create pbuffer, trying power of two dims");
1.565 + goto TRY_AGAIN_POWER_OF_TWO;
1.566 + }
1.567 +
1.568 + NS_WARNING("Failed to create pbuffer surface");
1.569 + return nullptr;
1.570 + }
1.571 +
1.572 + return surface;
1.573 +}
1.574 +
1.575 +static const EGLint kEGLConfigAttribsOffscreenPBuffer[] = {
1.576 + LOCAL_EGL_SURFACE_TYPE, LOCAL_EGL_PBUFFER_BIT,
1.577 + LOCAL_EGL_RENDERABLE_TYPE, LOCAL_EGL_OPENGL_ES2_BIT,
1.578 + // Old versions of llvmpipe seem to need this to properly create the pbuffer (bug 981856)
1.579 + LOCAL_EGL_RED_SIZE, 8,
1.580 + LOCAL_EGL_GREEN_SIZE, 8,
1.581 + LOCAL_EGL_BLUE_SIZE, 8,
1.582 + LOCAL_EGL_ALPHA_SIZE, 0,
1.583 + EGL_ATTRIBS_LIST_SAFE_TERMINATION_WORKING_AROUND_BUGS
1.584 +};
1.585 +
1.586 +static const EGLint kEGLConfigAttribsRGB16[] = {
1.587 + LOCAL_EGL_SURFACE_TYPE, LOCAL_EGL_WINDOW_BIT,
1.588 + LOCAL_EGL_RENDERABLE_TYPE, LOCAL_EGL_OPENGL_ES2_BIT,
1.589 + LOCAL_EGL_RED_SIZE, 5,
1.590 + LOCAL_EGL_GREEN_SIZE, 6,
1.591 + LOCAL_EGL_BLUE_SIZE, 5,
1.592 + LOCAL_EGL_ALPHA_SIZE, 0,
1.593 + EGL_ATTRIBS_LIST_SAFE_TERMINATION_WORKING_AROUND_BUGS
1.594 +};
1.595 +
1.596 +static const EGLint kEGLConfigAttribsRGB24[] = {
1.597 + LOCAL_EGL_SURFACE_TYPE, LOCAL_EGL_WINDOW_BIT,
1.598 + LOCAL_EGL_RENDERABLE_TYPE, LOCAL_EGL_OPENGL_ES2_BIT,
1.599 + LOCAL_EGL_RED_SIZE, 8,
1.600 + LOCAL_EGL_GREEN_SIZE, 8,
1.601 + LOCAL_EGL_BLUE_SIZE, 8,
1.602 + LOCAL_EGL_ALPHA_SIZE, 0,
1.603 + EGL_ATTRIBS_LIST_SAFE_TERMINATION_WORKING_AROUND_BUGS
1.604 +};
1.605 +
1.606 +static const EGLint kEGLConfigAttribsRGBA32[] = {
1.607 + LOCAL_EGL_SURFACE_TYPE, LOCAL_EGL_WINDOW_BIT,
1.608 + LOCAL_EGL_RENDERABLE_TYPE, LOCAL_EGL_OPENGL_ES2_BIT,
1.609 + LOCAL_EGL_RED_SIZE, 8,
1.610 + LOCAL_EGL_GREEN_SIZE, 8,
1.611 + LOCAL_EGL_BLUE_SIZE, 8,
1.612 + LOCAL_EGL_ALPHA_SIZE, 8,
1.613 +#if defined(MOZ_WIDGET_GONK) && ANDROID_VERSION >= 17
1.614 + LOCAL_EGL_FRAMEBUFFER_TARGET_ANDROID, LOCAL_EGL_TRUE,
1.615 +#endif
1.616 + EGL_ATTRIBS_LIST_SAFE_TERMINATION_WORKING_AROUND_BUGS
1.617 +};
1.618 +
1.619 +static bool
1.620 +CreateConfig(EGLConfig* aConfig, int32_t depth)
1.621 +{
1.622 + EGLConfig configs[64];
1.623 + const EGLint* attribs;
1.624 + EGLint ncfg = ArrayLength(configs);
1.625 +
1.626 + switch (depth) {
1.627 + case 16:
1.628 + attribs = kEGLConfigAttribsRGB16;
1.629 + break;
1.630 + case 24:
1.631 + attribs = kEGLConfigAttribsRGB24;
1.632 + break;
1.633 + case 32:
1.634 + attribs = kEGLConfigAttribsRGBA32;
1.635 + break;
1.636 + default:
1.637 + NS_ERROR("Unknown pixel depth");
1.638 + return false;
1.639 + }
1.640 +
1.641 + if (!sEGLLibrary.fChooseConfig(EGL_DISPLAY(), attribs,
1.642 + configs, ncfg, &ncfg) ||
1.643 + ncfg < 1) {
1.644 + return false;
1.645 + }
1.646 +
1.647 + for (int j = 0; j < ncfg; ++j) {
1.648 + EGLConfig config = configs[j];
1.649 + EGLint r, g, b, a;
1.650 +
1.651 + if (sEGLLibrary.fGetConfigAttrib(EGL_DISPLAY(), config,
1.652 + LOCAL_EGL_RED_SIZE, &r) &&
1.653 + sEGLLibrary.fGetConfigAttrib(EGL_DISPLAY(), config,
1.654 + LOCAL_EGL_GREEN_SIZE, &g) &&
1.655 + sEGLLibrary.fGetConfigAttrib(EGL_DISPLAY(), config,
1.656 + LOCAL_EGL_BLUE_SIZE, &b) &&
1.657 + sEGLLibrary.fGetConfigAttrib(EGL_DISPLAY(), config,
1.658 + LOCAL_EGL_ALPHA_SIZE, &a) &&
1.659 + ((depth == 16 && r == 5 && g == 6 && b == 5) ||
1.660 + (depth == 24 && r == 8 && g == 8 && b == 8) ||
1.661 + (depth == 32 && r == 8 && g == 8 && b == 8 && a == 8)))
1.662 + {
1.663 + *aConfig = config;
1.664 + return true;
1.665 + }
1.666 + }
1.667 + return false;
1.668 +}
1.669 +
1.670 +// Return true if a suitable EGLConfig was found and pass it out
1.671 +// through aConfig. Return false otherwise.
1.672 +//
1.673 +// NB: It's entirely legal for the returned EGLConfig to be valid yet
1.674 +// have the value null.
1.675 +static bool
1.676 +CreateConfig(EGLConfig* aConfig)
1.677 +{
1.678 + int32_t depth = gfxPlatform::GetPlatform()->GetScreenDepth();
1.679 + if (!CreateConfig(aConfig, depth)) {
1.680 +#ifdef MOZ_WIDGET_ANDROID
1.681 + // Bug 736005
1.682 + // Android doesn't always support 16 bit so also try 24 bit
1.683 + if (depth == 16) {
1.684 + return CreateConfig(aConfig, 24);
1.685 + }
1.686 + // Bug 970096
1.687 + // Some devices that have 24 bit screens only support 16 bit OpenGL?
1.688 + if (depth == 24) {
1.689 + return CreateConfig(aConfig, 16);
1.690 + }
1.691 +#endif
1.692 + return false;
1.693 + } else {
1.694 + return true;
1.695 + }
1.696 +}
1.697 +
1.698 +already_AddRefed<GLContext>
1.699 +GLContextProviderEGL::CreateWrappingExisting(void* aContext, void* aSurface)
1.700 +{
1.701 + if (!sEGLLibrary.EnsureInitialized()) {
1.702 + MOZ_CRASH("Failed to load EGL library!\n");
1.703 + return nullptr;
1.704 + }
1.705 +
1.706 + if (aContext && aSurface) {
1.707 + SurfaceCaps caps = SurfaceCaps::Any();
1.708 + EGLConfig config = EGL_NO_CONFIG;
1.709 + nsRefPtr<GLContextEGL> glContext =
1.710 + new GLContextEGL(caps,
1.711 + nullptr, false,
1.712 + config, (EGLSurface)aSurface, (EGLContext)aContext);
1.713 +
1.714 + glContext->SetIsDoubleBuffered(true);
1.715 + glContext->mOwnsContext = false;
1.716 +
1.717 + return glContext.forget();
1.718 + }
1.719 +
1.720 + return nullptr;
1.721 +}
1.722 +
1.723 +already_AddRefed<GLContext>
1.724 +GLContextProviderEGL::CreateForWindow(nsIWidget *aWidget)
1.725 +{
1.726 + if (!sEGLLibrary.EnsureInitialized()) {
1.727 + MOZ_CRASH("Failed to load EGL library!\n");
1.728 + return nullptr;
1.729 + }
1.730 +
1.731 + bool doubleBuffered = true;
1.732 +
1.733 + EGLConfig config;
1.734 + if (!CreateConfig(&config)) {
1.735 + MOZ_CRASH("Failed to create EGLConfig!\n");
1.736 + return nullptr;
1.737 + }
1.738 +
1.739 + EGLSurface surface = mozilla::gl::CreateSurfaceForWindow(aWidget, config);
1.740 +
1.741 + if (surface == EGL_NO_SURFACE) {
1.742 + MOZ_CRASH("Failed to create EGLSurface!\n");
1.743 + return nullptr;
1.744 + }
1.745 +
1.746 + SurfaceCaps caps = SurfaceCaps::Any();
1.747 + nsRefPtr<GLContextEGL> glContext =
1.748 + GLContextEGL::CreateGLContext(caps,
1.749 + nullptr, false,
1.750 + config, surface);
1.751 +
1.752 + if (!glContext) {
1.753 + MOZ_CRASH("Failed to create EGLContext!\n");
1.754 + DestroySurface(surface);
1.755 + return nullptr;
1.756 + }
1.757 +
1.758 + glContext->MakeCurrent();
1.759 + glContext->SetIsDoubleBuffered(doubleBuffered);
1.760 +
1.761 + return glContext.forget();
1.762 +}
1.763 +
1.764 +already_AddRefed<GLContextEGL>
1.765 +GLContextEGL::CreateEGLPBufferOffscreenContext(const gfxIntSize& size)
1.766 +{
1.767 + EGLConfig config;
1.768 + EGLSurface surface;
1.769 +
1.770 + const EGLint numConfigs = 1; // We only need one.
1.771 + EGLConfig configs[numConfigs];
1.772 + EGLint foundConfigs = 0;
1.773 + if (!sEGLLibrary.fChooseConfig(EGL_DISPLAY(),
1.774 + kEGLConfigAttribsOffscreenPBuffer,
1.775 + configs, numConfigs,
1.776 + &foundConfigs)
1.777 + || foundConfigs == 0)
1.778 + {
1.779 + NS_WARNING("No EGL Config for minimal PBuffer!");
1.780 + return nullptr;
1.781 + }
1.782 +
1.783 + // We absolutely don't care, so just pick the first one.
1.784 + config = configs[0];
1.785 + if (GLContext::DebugMode())
1.786 + sEGLLibrary.DumpEGLConfig(config);
1.787 +
1.788 + gfxIntSize pbSize(size);
1.789 + surface = GLContextEGL::CreatePBufferSurfaceTryingPowerOfTwo(config,
1.790 + LOCAL_EGL_NONE,
1.791 + pbSize);
1.792 + if (!surface) {
1.793 + NS_WARNING("Failed to create PBuffer for context!");
1.794 + return nullptr;
1.795 + }
1.796 +
1.797 + SurfaceCaps dummyCaps = SurfaceCaps::Any();
1.798 + nsRefPtr<GLContextEGL> glContext =
1.799 + GLContextEGL::CreateGLContext(dummyCaps,
1.800 + nullptr, true,
1.801 + config, surface);
1.802 + if (!glContext) {
1.803 + NS_WARNING("Failed to create GLContext from PBuffer");
1.804 + sEGLLibrary.fDestroySurface(EGL_DISPLAY(), surface);
1.805 + return nullptr;
1.806 + }
1.807 +
1.808 + if (!glContext->Init()) {
1.809 + NS_WARNING("Failed to initialize GLContext!");
1.810 + // GLContextEGL::dtor will destroy |surface| for us.
1.811 + return nullptr;
1.812 + }
1.813 +
1.814 + return glContext.forget();
1.815 +}
1.816 +
1.817 +already_AddRefed<GLContextEGL>
1.818 +GLContextEGL::CreateEGLPixmapOffscreenContext(const gfxIntSize& size)
1.819 +{
1.820 + gfxASurface *thebesSurface = nullptr;
1.821 + EGLNativePixmapType pixmap = 0;
1.822 +
1.823 + if (!pixmap) {
1.824 + return nullptr;
1.825 + }
1.826 +
1.827 + EGLSurface surface = 0;
1.828 + EGLConfig config = 0;
1.829 +
1.830 + if (!config) {
1.831 + return nullptr;
1.832 + }
1.833 + MOZ_ASSERT(surface);
1.834 +
1.835 + SurfaceCaps dummyCaps = SurfaceCaps::Any();
1.836 + nsRefPtr<GLContextEGL> glContext =
1.837 + GLContextEGL::CreateGLContext(dummyCaps,
1.838 + nullptr, true,
1.839 + config, surface);
1.840 + if (!glContext) {
1.841 + NS_WARNING("Failed to create GLContext from XSurface");
1.842 + sEGLLibrary.fDestroySurface(EGL_DISPLAY(), surface);
1.843 + return nullptr;
1.844 + }
1.845 +
1.846 + if (!glContext->Init()) {
1.847 + NS_WARNING("Failed to initialize GLContext!");
1.848 + // GLContextEGL::dtor will destroy |surface| for us.
1.849 + return nullptr;
1.850 + }
1.851 +
1.852 + glContext->HoldSurface(thebesSurface);
1.853 +
1.854 + return glContext.forget();
1.855 +}
1.856 +
1.857 +// Under EGL, on Android, pbuffers are supported fine, though
1.858 +// often without the ability to texture from them directly.
1.859 +already_AddRefed<GLContext>
1.860 +GLContextProviderEGL::CreateOffscreen(const gfxIntSize& size,
1.861 + const SurfaceCaps& caps)
1.862 +{
1.863 + if (!sEGLLibrary.EnsureInitialized()) {
1.864 + return nullptr;
1.865 + }
1.866 +
1.867 + gfxIntSize dummySize = gfxIntSize(16, 16);
1.868 + nsRefPtr<GLContextEGL> glContext;
1.869 + glContext = GLContextEGL::CreateEGLPBufferOffscreenContext(dummySize);
1.870 +
1.871 + if (!glContext)
1.872 + return nullptr;
1.873 +
1.874 + if (!glContext->InitOffscreen(ToIntSize(size), caps))
1.875 + return nullptr;
1.876 +
1.877 + return glContext.forget();
1.878 +}
1.879 +
1.880 +// Don't want a global context on Android as 1) share groups across 2 threads fail on many Tegra drivers (bug 759225)
1.881 +// and 2) some mobile devices have a very strict limit on global number of GL contexts (bug 754257)
1.882 +// and 3) each EGL context eats 750k on B2G (bug 813783)
1.883 +GLContext *
1.884 +GLContextProviderEGL::GetGlobalContext()
1.885 +{
1.886 + return nullptr;
1.887 +}
1.888 +
1.889 +void
1.890 +GLContextProviderEGL::Shutdown()
1.891 +{
1.892 +}
1.893 +
1.894 +} /* namespace gl */
1.895 +} /* namespace mozilla */
1.896 +
1.897 +#undef EGL_ATTRIBS_LIST_SAFE_TERMINATION_WORKING_AROUND_BUGS
