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replicant-frameworks_native/services/surfaceflinger/RenderEngine/RenderEngine.cpp
Jesse Hall 19e872912a Implement per-display EGLConfig and configless EGLContext 
Bug: 12230666
Change-Id: Icca608b108cbdcab9cf01a9236d8cdbda000a836
Signed-off-by: Jesse Hall <jessehall@google.com>
2013-12-23 21:53:39 -08:00

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/*
* Copyright 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <cutils/log.h>
#include <ui/Rect.h>
#include <ui/Region.h>
#include "RenderEngine.h"
#include "GLES10RenderEngine.h"
#include "GLES11RenderEngine.h"
#include "GLES20RenderEngine.h"
#include "GLExtensions.h"
#include "Mesh.h"
EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name);
// ---------------------------------------------------------------------------
namespace android {
// ---------------------------------------------------------------------------
static bool findExtension(const char* exts, const char* name) {
if (!exts)
return false;
size_t len = strlen(name);
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) {
contextClientVersion = 1;
} else {
LOG_ALWAYS_FATAL("no supported EGL_RENDERABLE_TYPEs");
}
// Also create our EGLContext
EGLint contextAttributes[] = {
EGL_CONTEXT_CLIENT_VERSION, contextClientVersion, // MUST be first
#ifdef EGL_IMG_context_priority
#ifdef HAS_CONTEXT_PRIORITY
#warning "using EGL_IMG_context_priority"
EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG,
#endif
#endif
EGL_NONE, EGL_NONE
};
EGLContext ctxt = eglCreateContext(display, config, NULL, contextAttributes);
// if can't create a GL context, we can only abort.
LOG_ALWAYS_FATAL_IF(ctxt==EGL_NO_CONTEXT, "EGLContext creation failed");
// 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, 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");
GLExtensions& extensions(GLExtensions::getInstance());
extensions.initWithGLStrings(
glGetString(GL_VENDOR),
glGetString(GL_RENDERER),
glGetString(GL_VERSION),
glGetString(GL_EXTENSIONS));
GlesVersion version = parseGlesVersion( extensions.getVersion() );
// initialize the renderer while GL is current
RenderEngine* engine = NULL;
switch (version) {
case GLES_VERSION_1_0:
engine = new GLES10RenderEngine();
break;
case GLES_VERSION_1_1:
engine = new GLES11RenderEngine();
break;
case GLES_VERSION_2_0:
case GLES_VERSION_3_0:
engine = new GLES20RenderEngine();
break;
}
engine->setEGLHandles(config, ctxt);
ALOGI("OpenGL ES informations:");
ALOGI("vendor : %s", extensions.getVendor());
ALOGI("renderer : %s", extensions.getRenderer());
ALOGI("version : %s", extensions.getVersion());
ALOGI("extensions: %s", extensions.getExtension());
ALOGI("GL_MAX_TEXTURE_SIZE = %d", engine->getMaxTextureSize());
ALOGI("GL_MAX_VIEWPORT_DIMS = %d", engine->getMaxViewportDims());
eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
eglDestroySurface(display, dummy);
return engine;
}
RenderEngine::RenderEngine() : mEGLContext(EGL_NO_CONTEXT) {
}
RenderEngine::~RenderEngine() {
}
void RenderEngine::setEGLHandles(EGLConfig config, EGLContext ctxt) {
mEGLConfig = config;
mEGLContext = ctxt;
}
EGLContext RenderEngine::getEGLConfig() const {
return mEGLConfig;
}
EGLContext RenderEngine::getEGLContext() const {
return mEGLContext;
}
void RenderEngine::checkErrors() const {
do {
// there could be more than one error flag
GLenum error = glGetError();
if (error == GL_NO_ERROR)
break;
ALOGE("GL error 0x%04x", int(error));
} while (true);
}
RenderEngine::GlesVersion RenderEngine::parseGlesVersion(const char* str) {
int major, minor;
if (sscanf(str, "OpenGL ES-CM %d.%d", &major, &minor) != 2) {
if (sscanf(str, "OpenGL ES %d.%d", &major, &minor) != 2) {
ALOGW("Unable to parse GL_VERSION string: \"%s\"", str);
return GLES_VERSION_1_0;
}
}
if (major == 1 && minor == 0) return GLES_VERSION_1_0;
if (major == 1 && minor >= 1) return GLES_VERSION_1_1;
if (major == 2 && minor >= 0) return GLES_VERSION_2_0;
if (major == 3 && minor >= 0) return GLES_VERSION_3_0;
ALOGW("Unrecognized OpenGL ES version: %d.%d", major, minor);
return GLES_VERSION_1_0;
}
void RenderEngine::fillRegionWithColor(const Region& region, uint32_t height,
float red, float green, float blue, float alpha) {
size_t c;
Rect const* r = region.getArray(&c);
Mesh mesh(Mesh::TRIANGLES, c*6, 2);
Mesh::VertexArray<vec2> position(mesh.getPositionArray<vec2>());
for (size_t i=0 ; i<c ; i++, r++) {
position[i*6 + 0].x = r->left;
position[i*6 + 0].y = height - r->top;
position[i*6 + 1].x = r->left;
position[i*6 + 1].y = height - r->bottom;
position[i*6 + 2].x = r->right;
position[i*6 + 2].y = height - r->bottom;
position[i*6 + 3].x = r->left;
position[i*6 + 3].y = height - r->top;
position[i*6 + 4].x = r->right;
position[i*6 + 4].y = height - r->bottom;
position[i*6 + 5].x = r->right;
position[i*6 + 5].y = height - r->top;
}
setupFillWithColor(red, green, blue, alpha);
drawMesh(mesh);
}
void RenderEngine::clearWithColor(float red, float green, float blue, float alpha) {
glClearColor(red, green, blue, alpha);
glClear(GL_COLOR_BUFFER_BIT);
}
void RenderEngine::setScissor(
uint32_t left, uint32_t bottom, uint32_t right, uint32_t top) {
glScissor(left, bottom, right, top);
glEnable(GL_SCISSOR_TEST);
}
void RenderEngine::disableScissor() {
glDisable(GL_SCISSOR_TEST);
}
void RenderEngine::genTextures(size_t count, uint32_t* names) {
glGenTextures(count, names);
}
void RenderEngine::deleteTextures(size_t count, uint32_t const* names) {
glDeleteTextures(count, names);
}
void RenderEngine::readPixels(size_t l, size_t b, size_t w, size_t h, uint32_t* pixels) {
glReadPixels(l, b, w, h, GL_RGBA, GL_UNSIGNED_BYTE, pixels);
}
void RenderEngine::dump(String8& result) {
const GLExtensions& extensions(GLExtensions::getInstance());
result.appendFormat("GLES: %s, %s, %s\n",
extensions.getVendor(),
extensions.getRenderer(),
extensions.getVersion());
result.appendFormat("%s\n", extensions.getExtension());
}
// ---------------------------------------------------------------------------
RenderEngine::BindImageAsFramebuffer::BindImageAsFramebuffer(
RenderEngine& engine, EGLImageKHR image) : mEngine(engine)
{
mEngine.bindImageAsFramebuffer(image, &mTexName, &mFbName, &mStatus);
ALOGE_IF(mStatus != GL_FRAMEBUFFER_COMPLETE_OES,
"glCheckFramebufferStatusOES error %d", mStatus);
}
RenderEngine::BindImageAsFramebuffer::~BindImageAsFramebuffer() {
// back to main framebuffer
mEngine.unbindFramebuffer(mTexName, mFbName);
}
status_t RenderEngine::BindImageAsFramebuffer::getStatus() const {
return mStatus == GL_FRAMEBUFFER_COMPLETE_OES ? NO_ERROR : BAD_VALUE;
}
// ---------------------------------------------------------------------------
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
// ---------------------------------------------------------------------------
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