#define ATRACE_TAG ATRACE_TAG_GRAPHICS
+#include <dlfcn.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <hardware/gralloc.h>
#include <system/window.h>
+#include <sys/mman.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
using namespace android;
+// This extension has not been ratified yet, so can't be shipped.
+// Implementation is incomplete and untested.
+#define ENABLE_EGL_KHR_GL_COLORSPACE 0
+
// ----------------------------------------------------------------------------
namespace android {
};
/*
- * This is the list of EGL extensions exposed to applications,
- * some of them are mandatory because used by the ANDROID system.
+ * This is the list of EGL extensions exposed to applications.
+ *
+ * Some of them (gBuiltinExtensionString) are implemented entirely in this EGL
+ * wrapper and are always available.
*
- * Mandatory extensions are required per the CDD and not explicitly
- * checked during EGL initialization. the system *assumes* these extensions
- * are present. the system may not function properly if some mandatory
- * extensions are missing.
+ * The rest (gExtensionString) depend on support in the EGL driver, and are
+ * only available if the driver supports them. However, some of these must be
+ * supported because they are used by the Android system itself; these are
+ * listd as mandatory below and are required by the CDD. The system *assumes*
+ * the mandatory extensions are present and may not function properly if some
+ * are missing.
*
- * NOTE: gExtensionString MUST have a single space as the last character.
+ * NOTE: Both strings MUST have a single space as the last character.
*/
+extern char const * const gBuiltinExtensionString =
+ "EGL_KHR_get_all_proc_addresses "
+ "EGL_ANDROID_presentation_time "
+ ;
extern char const * const gExtensionString =
"EGL_KHR_image " // mandatory
"EGL_KHR_image_base " // mandatory
"EGL_KHR_image_pixmap "
"EGL_KHR_lock_surface "
+#if (ENABLE_EGL_KHR_GL_COLORSPACE != 0)
+ "EGL_KHR_gl_colorspace "
+#endif
"EGL_KHR_gl_texture_2D_image "
"EGL_KHR_gl_texture_cubemap_image "
"EGL_KHR_gl_renderbuffer_image "
"EGL_NV_system_time "
"EGL_ANDROID_image_native_buffer " // mandatory
"EGL_KHR_wait_sync " // strongly recommended
- "EGL_ANDROID_presentation_time "
+ "EGL_ANDROID_recordable " // mandatory
;
// extensions not exposed to applications but used by the ANDROID system
// "EGL_IMG_hibernate_process " // optional
// "EGL_ANDROID_native_fence_sync " // strongly recommended
// "EGL_ANDROID_framebuffer_target " // mandatory for HWC 1.1
-// "EGL_ANDROID_recordable " // mandatory
-
+// "EGL_ANDROID_image_crop " // optional
/*
* EGL Extensions entry-points exposed to 3rd party applications
}
// ----------------------------------------------------------------------------
+// Utility procedure to test a NativeWindowType for validity before referencing
+// through the pointer. It's not feasible to test for deliberate forgeries,
+// but this heuristic is good enough to test for basic accidental cases, using
+// the special "magic" value placed in a native-window structure.
+// ----------------------------------------------------------------------------
+EGLBoolean isValidNativeWindow(NativeWindowType window)
+{
+ ANativeWindow *nwindow = static_cast<ANativeWindow*>(window);
+ // the msync system call returns with ENOMEM error for unmapped memory
+ // pages. This is used here as a way to test whether we can read through a
+ // pointer without getting a segfault.
+ uintptr_t pagesize = (uintptr_t) sysconf(_SC_PAGESIZE);
+ uintptr_t addr = ((uintptr_t)(&nwindow->common.magic)) & (~(pagesize - 1));
+ int rc = msync((void *)addr, pagesize, MS_ASYNC);
+ if (0 == rc) {
+ if (nwindow->common.magic == ANDROID_NATIVE_WINDOW_MAGIC)
+ return EGL_TRUE;
+ else
+ return EGL_FALSE;
+ }
+ if (ENOMEM == errno)
+ return EGL_FALSE;
+ ALOGE("error unexpected msync error: %s (%d)",
+ strerror(-errno), errno);
+ return EGL_FALSE;
+}
+
+
+// ----------------------------------------------------------------------------
// surfaces
// ----------------------------------------------------------------------------
+// The EGL_KHR_gl_colorspace spec hasn't been ratified yet, so these haven't
+// been added to the Khronos egl.h.
+#define EGL_GL_COLORSPACE_KHR EGL_VG_COLORSPACE
+#define EGL_GL_COLORSPACE_SRGB_KHR EGL_VG_COLORSPACE_sRGB
+#define EGL_GL_COLORSPACE_LINEAR_KHR EGL_VG_COLORSPACE_LINEAR
+
+// Turn linear formats into corresponding sRGB formats when colorspace is
+// EGL_GL_COLORSPACE_SRGB_KHR, or turn sRGB formats into corresponding linear
+// formats when colorspace is EGL_GL_COLORSPACE_LINEAR_KHR. In any cases where
+// the modification isn't possible, the original format is returned.
+static int modifyFormatColorspace(int fmt, EGLint colorspace) {
+ if (colorspace == EGL_GL_COLORSPACE_LINEAR_KHR) {
+ switch (fmt) {
+ case HAL_PIXEL_FORMAT_sRGB_A_8888: return HAL_PIXEL_FORMAT_RGBA_8888;
+ case HAL_PIXEL_FORMAT_sRGB_X_8888: return HAL_PIXEL_FORMAT_RGBX_8888;
+ }
+ } else if (colorspace == EGL_GL_COLORSPACE_SRGB_KHR) {
+ switch (fmt) {
+ case HAL_PIXEL_FORMAT_RGBA_8888: return HAL_PIXEL_FORMAT_sRGB_A_8888;
+ case HAL_PIXEL_FORMAT_RGBX_8888: return HAL_PIXEL_FORMAT_sRGB_X_8888;
+ }
+ }
+ return fmt;
+}
+
EGLSurface eglCreateWindowSurface( EGLDisplay dpy, EGLConfig config,
NativeWindowType window,
const EGLint *attrib_list)
egl_display_ptr dp = validate_display_connection(dpy, cnx);
if (dp) {
EGLDisplay iDpy = dp->disp.dpy;
- EGLint format;
+ if (!isValidNativeWindow(window)) {
+ ALOGE("EGLNativeWindow %p invalid", window);
+ return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
+ }
if (native_window_api_connect(window, NATIVE_WINDOW_API_EGL) != OK) {
ALOGE("EGLNativeWindowType %p already connected to another API",
window);
- return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
+ return setError(EGL_BAD_ALLOC, EGL_NO_SURFACE);
}
- // set the native window's buffers format to match this config
- if (cnx->egl.eglGetConfigAttrib(iDpy,
- config, EGL_NATIVE_VISUAL_ID, &format)) {
- if (format != 0) {
- int err = native_window_set_buffers_format(window, format);
- if (err != 0) {
- ALOGE("error setting native window pixel format: %s (%d)",
- strerror(-err), err);
- native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
- return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
+ // Set the native window's buffers format to match what this config requests.
+ // Whether to use sRGB gamma is not part of the EGLconfig, but is part
+ // of our native format. So if sRGB gamma is requested, we have to
+ // modify the EGLconfig's format before setting the native window's
+ // format.
+#if WORKAROUND_BUG_10194508
+#warning "WORKAROUND_10194508 enabled"
+ EGLint format;
+ if (!cnx->egl.eglGetConfigAttrib(iDpy, config, EGL_NATIVE_VISUAL_ID,
+ &format)) {
+ ALOGE("eglGetConfigAttrib(EGL_NATIVE_VISUAL_ID) failed: %#x",
+ eglGetError());
+ format = 0;
+ }
+ if (attrib_list) {
+ for (const EGLint* attr = attrib_list; *attr != EGL_NONE;
+ attr += 2) {
+ if (*attr == EGL_GL_COLORSPACE_KHR &&
+ dp->haveExtension("EGL_KHR_gl_colorspace")) {
+ if (ENABLE_EGL_KHR_GL_COLORSPACE) {
+ format = modifyFormatColorspace(format, *(attr+1));
+ } else {
+ // Normally we'd pass through unhandled attributes to
+ // the driver. But in case the driver implements this
+ // extension but we're disabling it, we want to prevent
+ // it getting through -- support will be broken without
+ // our help.
+ ALOGE("sRGB window surfaces not supported");
+ return setError(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE);
+ }
}
}
}
+#else
+ // by default, just pick RGBA_8888
+ EGLint format = HAL_PIXEL_FORMAT_RGBA_8888;
+
+ EGLint a = 0;
+ cnx->egl.eglGetConfigAttrib(iDpy, config, EGL_ALPHA_SIZE, &a);
+ if (a > 0) {
+ // alpha-channel requested, there's really only one suitable format
+ format = HAL_PIXEL_FORMAT_RGBA_8888;
+ } else {
+ EGLint r, g, b;
+ r = g = b = 0;
+ cnx->egl.eglGetConfigAttrib(iDpy, config, EGL_RED_SIZE, &r);
+ cnx->egl.eglGetConfigAttrib(iDpy, config, EGL_GREEN_SIZE, &g);
+ cnx->egl.eglGetConfigAttrib(iDpy, config, EGL_BLUE_SIZE, &b);
+ EGLint colorDepth = r + g + b;
+ if (colorDepth <= 16) {
+ format = HAL_PIXEL_FORMAT_RGB_565;
+ } else {
+ format = HAL_PIXEL_FORMAT_RGBX_8888;
+ }
+ }
+
+ // now select a corresponding sRGB format if needed
+ if (attrib_list && dp->haveExtension("EGL_KHR_gl_colorspace")) {
+ for (const EGLint* attr = attrib_list; *attr != EGL_NONE; attr += 2) {
+ if (*attr == EGL_GL_COLORSPACE_KHR) {
+ if (ENABLE_EGL_KHR_GL_COLORSPACE) {
+ format = modifyFormatColorspace(format, *(attr+1));
+ } else {
+ // Normally we'd pass through unhandled attributes to
+ // the driver. But in case the driver implements this
+ // extension but we're disabling it, we want to prevent
+ // it getting through -- support will be broken without
+ // our help.
+ ALOGE("sRGB window surfaces not supported");
+ return setError(EGL_BAD_ATTRIBUTE, EGL_NO_SURFACE);
+ }
+ }
+ }
+ }
+#endif
+ if (format != 0) {
+ int err = native_window_set_buffers_format(window, format);
+ if (err != 0) {
+ ALOGE("error setting native window pixel format: %s (%d)",
+ strerror(-err), err);
+ native_window_api_disconnect(window, NATIVE_WINDOW_API_EGL);
+ return setError(EGL_BAD_NATIVE_WINDOW, EGL_NO_SURFACE);
+ }
+ }
// the EGL spec requires that a new EGLSurface default to swap interval
// 1, so explicitly set that on the window here.
setError(EGL_BAD_SURFACE, EGL_FALSE);
return;
}
-
- int64_t timestamp = systemTime(SYSTEM_TIME_MONOTONIC);
-
- egl_surface_t const * const s = get_surface(surface);
- native_window_set_buffers_timestamp(s->win.get(), timestamp);
}
// ----------------------------------------------------------------------------
egl_connection_t* cnx = NULL;
const egl_display_ptr dp = validate_display_connection(dpy, cnx);
- if (dpy) {
+ if (dp) {
if (share_list != EGL_NO_CONTEXT) {
+ if (!ContextRef(dp.get(), share_list).get()) {
+ return setError(EGL_BAD_CONTEXT, EGL_NO_CONTEXT);
+ }
egl_context_t* const c = get_context(share_list);
share_list = c->context;
}
GLTrace_eglCreateContext(version, c);
#endif
return c;
- } else {
- EGLint error = eglGetError();
- ALOGE_IF(error == EGL_SUCCESS,
- "eglCreateContext(%p, %p, %p, %p) returned EGL_NO_CONTEXT "
- "but no EGL error!",
- dpy, config, share_list, attrib_list);
}
}
return EGL_NO_CONTEXT;
// validate the context (if not EGL_NO_CONTEXT)
if ((ctx != EGL_NO_CONTEXT) && !_c.get()) {
// EGL_NO_CONTEXT is valid
- return EGL_FALSE;
+ return setError(EGL_BAD_CONTEXT, EGL_FALSE);
}
// these are the underlying implementation's object
impl_ctx = c->context;
} else {
// no context given, use the implementation of the current context
+ if (draw != EGL_NO_SURFACE || read != EGL_NO_SURFACE) {
+ // calling eglMakeCurrent( ..., !=0, !=0, EGL_NO_CONTEXT);
+ return setError(EGL_BAD_MATCH, EGL_FALSE);
+ }
if (cur_c == NULL) {
// no current context
- if (draw != EGL_NO_SURFACE || read != EGL_NO_SURFACE) {
- // calling eglMakeCurrent( ..., !=0, !=0, EGL_NO_CONTEXT);
- return setError(EGL_BAD_MATCH, EGL_FALSE);
- }
// not an error, there is just no current context.
return EGL_TRUE;
}
// retrieve the underlying implementation's draw EGLSurface
if (draw != EGL_NO_SURFACE) {
+ if (!_d.get()) return setError(EGL_BAD_SURFACE, EGL_FALSE);
d = get_surface(draw);
impl_draw = d->surface;
}
// retrieve the underlying implementation's read EGLSurface
if (read != EGL_NO_SURFACE) {
+ if (!_r.get()) return setError(EGL_BAD_SURFACE, EGL_FALSE);
r = get_surface(read);
impl_read = r->surface;
}
}
} else {
// this will ALOGE the error
- result = setError(c->cnx->egl.eglGetError(), EGL_FALSE);
+ egl_connection_t* const cnx = &gEGLImpl;
+ result = setError(cnx->egl.eglGetError(), EGL_FALSE);
}
return result;
}
return err;
}
+static __eglMustCastToProperFunctionPointerType findBuiltinGLWrapper(
+ const char* procname) {
+ const egl_connection_t* cnx = &gEGLImpl;
+ void* proc = NULL;
+
+ proc = dlsym(cnx->libGles2, procname);
+ if (proc) return (__eglMustCastToProperFunctionPointerType)proc;
+
+ proc = dlsym(cnx->libGles1, procname);
+ if (proc) return (__eglMustCastToProperFunctionPointerType)proc;
+
+ return NULL;
+}
+
__eglMustCastToProperFunctionPointerType eglGetProcAddress(const char *procname)
{
// eglGetProcAddress() could be the very first function called
addr = findProcAddress(procname, sExtensionMap, NELEM(sExtensionMap));
if (addr) return addr;
+ addr = findBuiltinGLWrapper(procname);
+ if (addr) return addr;
// this protects accesses to sGLExtentionMap and sGLExtentionSlot
pthread_mutex_lock(&sExtensionMapMutex);
}
if (found) {
-#if USE_FAST_TLS_KEY
addr = gExtensionForwarders[slot];
-#endif
sGLExtentionMap.add(name, addr);
sGLExtentionSlot++;
}
{
clearError();
+#if EGL_TRACE
+ if (getEGLDebugLevel() > 0)
+ GLTrace_eglReleaseThread();
+#endif
+
// If there is context bound to the thread, release it
egl_display_t::loseCurrent(get_context(getContext()));
if (cnx->dso && cnx->egl.eglReleaseThread) {
cnx->egl.eglReleaseThread();
}
-
egl_tls_t::clearTLS();
-#if EGL_TRACE
- if (getEGLDebugLevel() > 0)
- GLTrace_eglReleaseThread();
-#endif
return EGL_TRUE;
}
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