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-rw-r--r--services/surfaceflinger/RenderEngine/RenderEngine.cpp217
-rw-r--r--services/surfaceflinger/RenderEngine/RenderEngine.h10
2 files changed, 216 insertions, 11 deletions
diff --git a/services/surfaceflinger/RenderEngine/RenderEngine.cpp b/services/surfaceflinger/RenderEngine/RenderEngine.cpp
index ba82cad..2871ce9 100644
--- a/services/surfaceflinger/RenderEngine/RenderEngine.cpp
+++ b/services/surfaceflinger/RenderEngine/RenderEngine.cpp
@@ -25,19 +25,51 @@
#include "GLExtensions.h"
#include "Mesh.h"
+EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name);
+
// ---------------------------------------------------------------------------
namespace android {
// ---------------------------------------------------------------------------
-RenderEngine* RenderEngine::create(EGLDisplay display, EGLConfig config) {
- EGLint renderableType = 0;
- EGLint contextClientVersion = 0;
+static bool findExtension(const char* exts, const char* name) {
+ if (!exts)
+ return false;
+ size_t len = strlen(name);
- // query the renderable type, setting the EGL_CONTEXT_CLIENT_VERSION accordingly
- if (!eglGetConfigAttrib(display, config, EGL_RENDERABLE_TYPE, &renderableType)) {
- LOG_ALWAYS_FATAL("can't query EGLConfig RENDERABLE_TYPE");
+ const char* pos = exts;
+ while ((pos = strstr(pos, name)) != NULL) {
+ if (pos[len] == '\0' || pos[len] == ' ')
+ return true;
+ pos += len;
}
+ return false;
+}
+
+RenderEngine* RenderEngine::create(EGLDisplay display, int hwcFormat) {
+ // EGL_ANDROIDX_no_config_context is an experimental extension with no
+ // written specification. It will be replaced by something more formal.
+ // SurfaceFlinger is using it to allow a single EGLContext to render to
+ // both a 16-bit primary display framebuffer and a 32-bit virtual display
+ // framebuffer.
+ //
+ // The code assumes that ES2 or later is available if this extension is
+ // supported.
+ EGLConfig config = EGL_NO_CONFIG;
+ if (!findExtension(
+ eglQueryStringImplementationANDROID(display, EGL_EXTENSIONS),
+ "EGL_ANDROIDX_no_config_context")) {
+ config = chooseEglConfig(display, hwcFormat);
+ }
+
+ EGLint renderableType = 0;
+ if (config == EGL_NO_CONFIG) {
+ renderableType = EGL_OPENGL_ES2_BIT;
+ } else if (!eglGetConfigAttrib(display, config,
+ EGL_RENDERABLE_TYPE, &renderableType)) {
+ LOG_ALWAYS_FATAL("can't query EGLConfig RENDERABLE_TYPE");
+ }
+ EGLint contextClientVersion = 0;
if (renderableType & EGL_OPENGL_ES2_BIT) {
contextClientVersion = 2;
} else if (renderableType & EGL_OPENGL_ES_BIT) {
@@ -66,8 +98,12 @@ RenderEngine* RenderEngine::create(EGLDisplay display, EGLConfig config) {
// now figure out what version of GL did we actually get
// NOTE: a dummy surface is not needed if KHR_create_context is supported
+ EGLConfig dummyConfig = config;
+ if (dummyConfig == EGL_NO_CONFIG) {
+ dummyConfig = chooseEglConfig(display, hwcFormat);
+ }
EGLint attribs[] = { EGL_WIDTH, 1, EGL_HEIGHT, 1, EGL_NONE, EGL_NONE };
- EGLSurface dummy = eglCreatePbufferSurface(display, config, attribs);
+ EGLSurface dummy = eglCreatePbufferSurface(display, dummyConfig, attribs);
LOG_ALWAYS_FATAL_IF(dummy==EGL_NO_SURFACE, "can't create dummy pbuffer");
EGLBoolean success = eglMakeCurrent(display, dummy, dummy, ctxt);
LOG_ALWAYS_FATAL_IF(!success, "can't make dummy pbuffer current");
@@ -96,7 +132,7 @@ RenderEngine* RenderEngine::create(EGLDisplay display, EGLConfig config) {
engine = new GLES20RenderEngine();
break;
}
- engine->setEGLContext(ctxt);
+ engine->setEGLHandles(config, ctxt);
ALOGI("OpenGL ES informations:");
ALOGI("vendor : %s", extensions.getVendor());
@@ -118,10 +154,15 @@ RenderEngine::RenderEngine() : mEGLContext(EGL_NO_CONTEXT) {
RenderEngine::~RenderEngine() {
}
-void RenderEngine::setEGLContext(EGLContext ctxt) {
+void RenderEngine::setEGLHandles(EGLConfig config, EGLContext ctxt) {
+ mEGLConfig = config;
mEGLContext = ctxt;
}
+EGLContext RenderEngine::getEGLConfig() const {
+ return mEGLConfig;
+}
+
EGLContext RenderEngine::getEGLContext() const {
return mEGLContext;
}
@@ -235,5 +276,163 @@ status_t RenderEngine::BindImageAsFramebuffer::getStatus() const {
}
// ---------------------------------------------------------------------------
+
+static status_t selectConfigForAttribute(EGLDisplay dpy, EGLint const* attrs,
+ EGLint attribute, EGLint wanted, EGLConfig* outConfig) {
+ EGLConfig config = NULL;
+ EGLint numConfigs = -1, n = 0;
+ eglGetConfigs(dpy, NULL, 0, &numConfigs);
+ EGLConfig* const configs = new EGLConfig[numConfigs];
+ eglChooseConfig(dpy, attrs, configs, numConfigs, &n);
+
+ if (n) {
+ if (attribute != EGL_NONE) {
+ for (int i=0 ; i<n ; i++) {
+ EGLint value = 0;
+ eglGetConfigAttrib(dpy, configs[i], attribute, &value);
+ if (wanted == value) {
+ *outConfig = configs[i];
+ delete [] configs;
+ return NO_ERROR;
+ }
+ }
+ } else {
+ // just pick the first one
+ *outConfig = configs[0];
+ delete [] configs;
+ return NO_ERROR;
+ }
+ }
+ delete [] configs;
+ return NAME_NOT_FOUND;
+}
+
+class EGLAttributeVector {
+ struct Attribute;
+ class Adder;
+ friend class Adder;
+ KeyedVector<Attribute, EGLint> mList;
+ struct Attribute {
+ Attribute() {};
+ Attribute(EGLint v) : v(v) { }
+ EGLint v;
+ bool operator < (const Attribute& other) const {
+ // this places EGL_NONE at the end
+ EGLint lhs(v);
+ EGLint rhs(other.v);
+ if (lhs == EGL_NONE) lhs = 0x7FFFFFFF;
+ if (rhs == EGL_NONE) rhs = 0x7FFFFFFF;
+ return lhs < rhs;
+ }
+ };
+ class Adder {
+ friend class EGLAttributeVector;
+ EGLAttributeVector& v;
+ EGLint attribute;
+ Adder(EGLAttributeVector& v, EGLint attribute)
+ : v(v), attribute(attribute) {
+ }
+ public:
+ void operator = (EGLint value) {
+ if (attribute != EGL_NONE) {
+ v.mList.add(attribute, value);
+ }
+ }
+ operator EGLint () const { return v.mList[attribute]; }
+ };
+public:
+ EGLAttributeVector() {
+ mList.add(EGL_NONE, EGL_NONE);
+ }
+ void remove(EGLint attribute) {
+ if (attribute != EGL_NONE) {
+ mList.removeItem(attribute);
+ }
+ }
+ Adder operator [] (EGLint attribute) {
+ return Adder(*this, attribute);
+ }
+ EGLint operator [] (EGLint attribute) const {
+ return mList[attribute];
+ }
+ // cast-operator to (EGLint const*)
+ operator EGLint const* () const { return &mList.keyAt(0).v; }
+};
+
+
+static status_t selectEGLConfig(EGLDisplay display, EGLint format,
+ EGLint renderableType, EGLConfig* config) {
+ // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if
+ // it is to be used with WIFI displays
+ status_t err;
+ EGLint wantedAttribute;
+ EGLint wantedAttributeValue;
+
+ EGLAttributeVector attribs;
+ if (renderableType) {
+ attribs[EGL_RENDERABLE_TYPE] = renderableType;
+ attribs[EGL_RECORDABLE_ANDROID] = EGL_TRUE;
+ attribs[EGL_SURFACE_TYPE] = EGL_WINDOW_BIT|EGL_PBUFFER_BIT;
+ attribs[EGL_FRAMEBUFFER_TARGET_ANDROID] = EGL_TRUE;
+ attribs[EGL_RED_SIZE] = 8;
+ attribs[EGL_GREEN_SIZE] = 8;
+ attribs[EGL_BLUE_SIZE] = 8;
+ wantedAttribute = EGL_NONE;
+ wantedAttributeValue = EGL_NONE;
+ } else {
+ // if no renderable type specified, fallback to a simplified query
+ wantedAttribute = EGL_NATIVE_VISUAL_ID;
+ wantedAttributeValue = format;
+ }
+
+ err = selectConfigForAttribute(display, attribs,
+ wantedAttribute, wantedAttributeValue, config);
+ if (err == NO_ERROR) {
+ EGLint caveat;
+ if (eglGetConfigAttrib(display, *config, EGL_CONFIG_CAVEAT, &caveat))
+ ALOGW_IF(caveat == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!");
+ }
+
+ return err;
+}
+
+EGLConfig RenderEngine::chooseEglConfig(EGLDisplay display, int format) {
+ status_t err;
+ EGLConfig config;
+
+ // First try to get an ES2 config
+ err = selectEGLConfig(display, format, EGL_OPENGL_ES2_BIT, &config);
+ if (err != NO_ERROR) {
+ // If ES2 fails, try ES1
+ err = selectEGLConfig(display, format, EGL_OPENGL_ES_BIT, &config);
+ if (err != NO_ERROR) {
+ // still didn't work, probably because we're on the emulator...
+ // try a simplified query
+ ALOGW("no suitable EGLConfig found, trying a simpler query");
+ err = selectEGLConfig(display, format, 0, &config);
+ if (err != NO_ERROR) {
+ // this EGL is too lame for android
+ LOG_ALWAYS_FATAL("no suitable EGLConfig found, giving up");
+ }
+ }
+ }
+
+ // print some debugging info
+ EGLint r,g,b,a;
+ eglGetConfigAttrib(display, config, EGL_RED_SIZE, &r);
+ eglGetConfigAttrib(display, config, EGL_GREEN_SIZE, &g);
+ eglGetConfigAttrib(display, config, EGL_BLUE_SIZE, &b);
+ eglGetConfigAttrib(display, config, EGL_ALPHA_SIZE, &a);
+ ALOGI("EGL information:");
+ ALOGI("vendor : %s", eglQueryString(display, EGL_VENDOR));
+ ALOGI("version : %s", eglQueryString(display, EGL_VERSION));
+ ALOGI("extensions: %s", eglQueryString(display, EGL_EXTENSIONS));
+ ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported");
+ ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, config);
+
+ return config;
+}
+
+// ---------------------------------------------------------------------------
}; // namespace android
// ---------------------------------------------------------------------------
diff --git a/services/surfaceflinger/RenderEngine/RenderEngine.h b/services/surfaceflinger/RenderEngine/RenderEngine.h
index 3c7f9ab..577dc0a 100644
--- a/services/surfaceflinger/RenderEngine/RenderEngine.h
+++ b/services/surfaceflinger/RenderEngine/RenderEngine.h
@@ -25,6 +25,8 @@
#include <EGL/eglext.h>
#include <ui/mat4.h>
+#define EGL_NO_CONFIG ((EGLConfig)0)
+
// ---------------------------------------------------------------------------
namespace android {
// ---------------------------------------------------------------------------
@@ -44,8 +46,9 @@ class RenderEngine {
};
static GlesVersion parseGlesVersion(const char* str);
+ EGLConfig mEGLConfig;
EGLContext mEGLContext;
- void setEGLContext(EGLContext ctxt);
+ void setEGLHandles(EGLConfig config, EGLContext ctxt);
virtual void bindImageAsFramebuffer(EGLImageKHR image, uint32_t* texName, uint32_t* fbName, uint32_t* status) = 0;
virtual void unbindFramebuffer(uint32_t texName, uint32_t fbName) = 0;
@@ -55,7 +58,9 @@ protected:
virtual ~RenderEngine() = 0;
public:
- static RenderEngine* create(EGLDisplay display, EGLConfig config);
+ static RenderEngine* create(EGLDisplay display, int hwcFormat);
+
+ static EGLConfig chooseEglConfig(EGLDisplay display, int format);
// dump the extension strings. always call the base class.
virtual void dump(String8& result);
@@ -107,6 +112,7 @@ public:
virtual size_t getMaxTextureSize() const = 0;
virtual size_t getMaxViewportDims() const = 0;
+ EGLConfig getEGLConfig() const;
EGLContext getEGLContext() const;
};
generated by cgit v1.1 at 2025-08-16 04:36:15 +0000