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[android] #5456 - headless view egl - cleanup resources and cleanup code
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@ivovandongen
ivovandongen committed Jul 7, 2016
1 parent f74c311 commit e37fc9b
Showing 1 changed file with 123 additions and 147 deletions.
270 changes: 123 additions & 147 deletions platform/android/src/headless_view_egl.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -7,160 +7,136 @@
#include <EGL/egl.h>

namespace mbgl {
//Android seems to be very specific here...,
static const EGLint configAttribs[] = {
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_DEPTH_SIZE, 0,
EGL_STENCIL_SIZE, 0,
EGL_NONE
};

gl::glProc HeadlessView::initializeExtension(const char* name) {
Log::Info(Event::Android, "Initialize extension: %s", name);
return eglGetProcAddress(name);
}

void HeadlessView::createContext() {
Log::Info(Event::Android, "Create context");

//Connect to display system
glDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
if(glDisplay == EGL_NO_DISPLAY){
throw std::runtime_error("Could not connect to display");
}

//Initialize
EGLint major, minor;
if(!eglInitialize(glDisplay, &major, &minor)) {
Log::Error(Event::Android, "Could not initialize egl");
}

EGLint numConfigs;
if(!eglChooseConfig(glDisplay, configAttribs, &glConfig, 1, &numConfigs)) {
throw std::runtime_error( "Could not choose config");
}

EGLint surfAttribs[] = {
EGL_WIDTH, 512,
EGL_HEIGHT, 512,
EGL_LARGEST_PBUFFER, EGL_TRUE,
EGL_NONE
};

glSurface = eglCreatePbufferSurface(glDisplay, glConfig, surfAttribs);
if(glSurface == EGL_NO_SURFACE) {
throw std::runtime_error("Could not create surface: " + std::to_string(eglGetError()));
}

eglBindAPI(EGL_OPENGL_API);

GLint contextAttrs[] =
{
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
glContext = eglCreateContext(glDisplay, glConfig, EGL_NO_CONTEXT, contextAttrs);

if (glContext == EGL_NO_CONTEXT) {
throw std::runtime_error("Could not create context");
}
}

void HeadlessView::destroyContext() {
Log::Info(Event::Android, "Destroy context");
if (glContext != EGL_NO_CONTEXT) {
eglDestroyContext(glDisplay, glContext);
glContext = EGL_NO_CONTEXT;
}

//Destroy surface?
/*
if (glSurface != EGL_NO_SURFACE) {
eglDestroySurface(glDisplay, glSurface);
glSurface = EGL_NO_SURFACE;
}
*/
//Terminate display?
/*
if(glDisplay != EGL_NO_DISPLAY) {
eglTerminate(glDisplay);
glDisplay = EGL_NO_DISPLAY;
}
*/

//Release thread?
//eglReleaseThread();
}

void HeadlessView::resizeFramebuffer() {
const unsigned int w = dimensions[0] * pixelRatio;
const unsigned int h = dimensions[1] * pixelRatio;

// Create depth/stencil buffer
MBGL_CHECK_ERROR(glGenRenderbuffers(1, &fboDepthStencil));
MBGL_CHECK_ERROR(glBindRenderbuffer(GL_RENDERBUFFER, fboDepthStencil));
MBGL_CHECK_ERROR(glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8_OES, w, h));
MBGL_CHECK_ERROR(glBindRenderbuffer(GL_RENDERBUFFER, 0));

MBGL_CHECK_ERROR(glGenRenderbuffers(1, &fboColor));
MBGL_CHECK_ERROR(glBindRenderbuffer(GL_RENDERBUFFER, fboColor));
MBGL_CHECK_ERROR(glRenderbufferStorage(GL_RENDERBUFFER, GL_RGBA8_OES, w, h));
MBGL_CHECK_ERROR(glBindRenderbuffer(GL_RENDERBUFFER, 0));

MBGL_CHECK_ERROR(glGenFramebuffers(1, &fbo));
MBGL_CHECK_ERROR(glBindFramebuffer(GL_FRAMEBUFFER, fbo));

MBGL_CHECK_ERROR(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, fboColor));
MBGL_CHECK_ERROR(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, fboDepthStencil));
MBGL_CHECK_ERROR(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, fboDepthStencil));

GLenum status = MBGL_CHECK_ERROR(glCheckFramebufferStatus(GL_FRAMEBUFFER));

if (status != GL_FRAMEBUFFER_COMPLETE) {
std::string error("Couldn't create framebuffer: ");
switch (status) {
case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT: (error += "incomplete attachment"); break;
case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT: error += "incomplete missing attachment"; break;
case GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS: error += "incomplete dimensions"; break;
case GL_FRAMEBUFFER_UNSUPPORTED: error += "unsupported"; break;
default: error += "other"; break;
}
throw std::runtime_error(error);
}

MBGL_CHECK_ERROR(glViewport(0, 0, w, h));
}

/*
void HeadlessView::resizeFramebuffer() {
Log::Info(Event::Android, "Resize FB");
//Android seems to be very specific here...,
static const EGLint configAttribs[] = {
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_DEPTH_SIZE, 0,
EGL_STENCIL_SIZE, 0,
EGL_NONE
};

//Make sure we're clean
if(glSurface != EGL_NO_SURFACE) {
eglDestroySurface(glDisplay, glSurface);
gl::glProc HeadlessView::initializeExtension(const char* name) {
Log::Info(Event::Android, "Initialize extension: %s", name);
return eglGetProcAddress(name);
}

const int32_t w = dimensions[0] * pixelRatio;
const int32_t h = dimensions[1] * pixelRatio;
const EGLint pbufferAttribs[] = {
EGL_WIDTH, w,
EGL_HEIGHT, h,
EGL_NONE,
};
Log::Info(Event::Android, "Resizing pbuffer to %dx%d", w, h);
void HeadlessView::createContext() {
Log::Info(Event::Android, "Create context");

//Connect to display system
glDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
if(glDisplay == EGL_NO_DISPLAY){
throw std::runtime_error("Could not connect to display");
}

//Initialize
EGLint major, minor;
if(!eglInitialize(glDisplay, &major, &minor)) {
Log::Error(Event::Android, "Could not initialize egl");
}

//Choose a matching configuration
EGLint numConfigs;
if(!eglChooseConfig(glDisplay, configAttribs, &glConfig, 1, &numConfigs)) {
throw std::runtime_error( "Could not choose config");
}

//Create a PBuffer surface (in conjunction with EGL_SURFACE_TYPE, EGL_PBUFFER_BIT)
EGLint surfAttribs[] = {
EGL_WIDTH, 512,
EGL_HEIGHT, 512,
EGL_LARGEST_PBUFFER, EGL_TRUE,
EGL_NONE
};

glSurface = eglCreatePbufferSurface(glDisplay, glConfig, surfAttribs);
if(glSurface == EGL_NO_SURFACE) {
throw std::runtime_error("Could not create surface: " + std::to_string(eglGetError()));
}

//Bind
eglBindAPI(EGL_OPENGL_API);


//And, create the context finally
GLint contextAttrs[] =
{
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
glContext = eglCreateContext(glDisplay, glConfig, EGL_NO_CONTEXT, contextAttrs);

if (glContext == EGL_NO_CONTEXT) {
throw std::runtime_error("Could not create context");
}
}

glSurface = eglCreatePbufferSurface(glDisplay, glConfig, pbufferAttribs);
void HeadlessView::destroyContext() {
Log::Info(Event::Android, "Destroy context");

//Destroy context
if (glContext != EGL_NO_CONTEXT) {
eglDestroyContext(glDisplay, glContext);
glContext = EGL_NO_CONTEXT;
}

//Destroy surface
if (glSurface != EGL_NO_SURFACE) {
eglDestroySurface(glDisplay, glSurface);
glSurface = EGL_NO_SURFACE;
}

//Terminate display
if(glDisplay != EGL_NO_DISPLAY) {
eglTerminate(glDisplay);
glDisplay = EGL_NO_DISPLAY;
}
}

this->activateContext();
void HeadlessView::resizeFramebuffer() {
const unsigned int w = dimensions[0] * pixelRatio;
const unsigned int h = dimensions[1] * pixelRatio;

// Create depth/stencil buffer
MBGL_CHECK_ERROR(glGenRenderbuffers(1, &fboDepthStencil));
MBGL_CHECK_ERROR(glBindRenderbuffer(GL_RENDERBUFFER, fboDepthStencil));
MBGL_CHECK_ERROR(glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8_OES, w, h));
MBGL_CHECK_ERROR(glBindRenderbuffer(GL_RENDERBUFFER, 0));

MBGL_CHECK_ERROR(glGenRenderbuffers(1, &fboColor));
MBGL_CHECK_ERROR(glBindRenderbuffer(GL_RENDERBUFFER, fboColor));
MBGL_CHECK_ERROR(glRenderbufferStorage(GL_RENDERBUFFER, GL_RGBA8_OES, w, h));
MBGL_CHECK_ERROR(glBindRenderbuffer(GL_RENDERBUFFER, 0));

MBGL_CHECK_ERROR(glGenFramebuffers(1, &fbo));
MBGL_CHECK_ERROR(glBindFramebuffer(GL_FRAMEBUFFER, fbo));

MBGL_CHECK_ERROR(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, fboColor));
MBGL_CHECK_ERROR(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, fboDepthStencil));
MBGL_CHECK_ERROR(glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_STENCIL_ATTACHMENT, GL_RENDERBUFFER, fboDepthStencil));

GLenum status = MBGL_CHECK_ERROR(glCheckFramebufferStatus(GL_FRAMEBUFFER));

if (status != GL_FRAMEBUFFER_COMPLETE) {
std::string error("Couldn't create framebuffer: ");
switch (status) {
case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT: (error += "incomplete attachment"); break;
case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT: error += "incomplete missing attachment"; break;
case GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS: error += "incomplete dimensions"; break;
case GL_FRAMEBUFFER_UNSUPPORTED: error += "unsupported"; break;
default: error += "other"; break;
}
throw std::runtime_error(error);
}

MBGL_CHECK_ERROR(glViewport(0, 0, w, h));
}
*/

void HeadlessView::clearBuffers() {
Log::Info(Event::Android, "Clear buffers");
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