Edgaru089/SFML
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Make EGL pixel format selection follow the same procedure as the other context types and make OpenGL context version parsing more tolerant of garbage data. Fixes #2395

Browse Source
This commit is contained in:
Jonathan De Wachter 2016-09-28 18:43:10 +07:00 committed by Chris Thrasher
parent 7004db1cd9
commit 6a3feda5ab
3 changed files with 118 additions and 65 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
src/SFML/Graphics/RenderTextureImplFBO.cpp
View File

@ -263,15 +263,17 @@ bool RenderTextureImplFBO::create(const Vector2u& size, unsigned int textureId,
static_cast<GLsizei>(size.x),
static_cast<GLsizei>(size.y)));
m_stencil = true;
#else
m_stencil = false;
err() << "Impossible to create render texture (failed to create the attached depth/stencil buffer)"
<< std::endl;
return false;
#endif // SFML_OPENGL_ES
m_stencil = true;
}
else if (settings.depthBits)
{
@ -355,14 +357,16 @@ bool RenderTextureImplFBO::create(const Vector2u& size, unsigned int textureId,
static_cast<GLsizei>(size.y)));
}
m_multisample = true;
#else
m_multisample = false;
err() << "Impossible to create render texture (failed to create the multisample render buffers)" << std::endl;
return false;
#endif // SFML_OPENGL_ES
m_multisample = true;
}
}

131
src/SFML/Window/EglContext.cpp
View File

@ -31,6 +31,7 @@
#include <SFML/Window/EglContext.hpp>
#include <SFML/Window/WindowImpl.hpp>
#include <memory>
#include <mutex>
#include <ostream>
#ifdef SFML_SYSTEM_ANDROID
@ -80,18 +81,27 @@ EGLDisplay getInitializedDisplay()
////////////////////////////////////////////////////////////
void ensureInit()
{
static bool initialized = false;
if (!initialized)
{
initialized = true;
static std::once_flag flag;
// We don't check the return value since the extension
// flags are cleared even if loading fails
gladLoaderLoadEGL(EGL_NO_DISPLAY);
std::call_once(flag,
[]()
{
if (!gladLoaderLoadEGL(EGL_NO_DISPLAY))
{
// At this point, the failure is unrecoverable
// Dump a message to the console and let the application terminate
sf::err() << "Failed to load EGL entry points" << std::endl;
assert(false);
return false;
}
// Continue loading with a display
gladLoaderLoadEGL(getInitializedDisplay());
}
return true;
});
}
} // namespace EglContextImpl
} // namespace
@ -287,67 +297,100 @@ EGLConfig EglContext::getBestConfig(EGLDisplay display, unsigned int bitsPerPixe
{
EglContextImpl::ensureInit();
// Set our video settings constraint
const EGLint attributes[] =
{EGL_BUFFER_SIZE,
static_cast<EGLint>(bitsPerPixel),
EGL_DEPTH_SIZE,
static_cast<EGLint>(settings.depthBits),
EGL_STENCIL_SIZE,
static_cast<EGLint>(settings.stencilBits),
EGL_SAMPLE_BUFFERS,
settings.antialiasingLevel ? 1 : 0,
EGL_SAMPLES,
static_cast<EGLint>(settings.antialiasingLevel),
EGL_SURFACE_TYPE,
EGL_WINDOW_BIT | EGL_PBUFFER_BIT,
EGL_RENDERABLE_TYPE,
EGL_OPENGL_ES_BIT,
EGL_NONE};
// Determine the number of available configs
EGLint configCount;
EGLConfig configs[1];
eglCheck(eglGetConfigs(display, nullptr, 0, &configCount));
// Ask EGL for the best config matching our video settings
eglCheck(eglChooseConfig(display, attributes, configs, 1, &configCount));
// Retrieve the list of available configs
auto configs = std::make_unique<EGLConfig[]>(static_cast<std::size_t>(configCount));
// TODO: This should check EGL_CONFORMANT and pick the first conformant configuration.
eglCheck(eglGetConfigs(display, configs.get(), configCount, &configCount));
return configs[0];
// Evaluate all the returned configs, and pick the best one
int bestScore = 0x7FFFFFFF;
EGLConfig bestConfig{};
for (std::size_t i = 0; i < static_cast<std::size_t>(configCount); ++i)
{
// Check mandatory attributes
int surfaceType;
int renderableType;
eglCheck(eglGetConfigAttrib(display, configs[i], EGL_SURFACE_TYPE, &surfaceType));
eglCheck(eglGetConfigAttrib(display, configs[i], EGL_RENDERABLE_TYPE, &renderableType));
if (!(surfaceType & (EGL_WINDOW_BIT | EGL_PBUFFER_BIT)) || !(renderableType & EGL_OPENGL_ES_BIT))
continue;
// Extract the components of the current config
int red;
int green;
int blue;
int alpha;
int depth;
int stencil;
int multiSampling;
int samples;
int caveat;
eglCheck(eglGetConfigAttrib(display, configs[i], EGL_RED_SIZE, &red));
eglCheck(eglGetConfigAttrib(display, configs[i], EGL_GREEN_SIZE, &green));
eglCheck(eglGetConfigAttrib(display, configs[i], EGL_BLUE_SIZE, &blue));
eglCheck(eglGetConfigAttrib(display, configs[i], EGL_ALPHA_SIZE, &alpha));
eglCheck(eglGetConfigAttrib(display, configs[i], EGL_DEPTH_SIZE, &depth));
eglCheck(eglGetConfigAttrib(display, configs[i], EGL_STENCIL_SIZE, &stencil));
eglCheck(eglGetConfigAttrib(display, configs[i], EGL_SAMPLE_BUFFERS, &multiSampling));
eglCheck(eglGetConfigAttrib(display, configs[i], EGL_SAMPLES, &samples));
eglCheck(eglGetConfigAttrib(display, configs[i], EGL_CONFIG_CAVEAT, &caveat));
// Evaluate the config
int color = red + green + blue + alpha;
int score = evaluateFormat(bitsPerPixel, settings, color, depth, stencil, multiSampling ? samples : 0, caveat == EGL_NONE, false);
// If it's better than the current best, make it the new best
if (score < bestScore)
{
bestScore = score;
bestConfig = configs[i];
}
}
assert(bestScore < 0x7FFFFFFF);
return bestConfig;
}
////////////////////////////////////////////////////////////
void EglContext::updateSettings()
{
m_settings.majorVersion = 1;
m_settings.minorVersion = 1;
m_settings.attributeFlags = ContextSettings::Default;
m_settings.depthBits = 0;
m_settings.stencilBits = 0;
m_settings.antialiasingLevel = 0;
EGLBoolean result = EGL_FALSE;
EGLint tmp = 0;
// Update the internal context settings with the current config
eglCheck(result = eglGetConfigAttrib(m_display, m_config, EGL_DEPTH_SIZE, &tmp));
if (result == EGL_FALSE)
err() << "Failed to retrieve EGL_DEPTH_SIZE" << std::endl;
if (result != EGL_FALSE)
m_settings.depthBits = static_cast<unsigned int>(tmp);
eglCheck(result = eglGetConfigAttrib(m_display, m_config, EGL_STENCIL_SIZE, &tmp));
if (result == EGL_FALSE)
err() << "Failed to retrieve EGL_STENCIL_SIZE" << std::endl;
if (result != EGL_FALSE)
m_settings.stencilBits = static_cast<unsigned int>(tmp);
eglCheck(result = eglGetConfigAttrib(m_display, m_config, EGL_SAMPLE_BUFFERS, &tmp));
if ((result != EGL_FALSE) && tmp)
{
eglCheck(result = eglGetConfigAttrib(m_display, m_config, EGL_SAMPLES, &tmp));
if (result == EGL_FALSE)
err() << "Failed to retrieve EGL_SAMPLES" << std::endl;
if (result != EGL_FALSE)
m_settings.antialiasingLevel = static_cast<unsigned int>(tmp);
m_settings.majorVersion = 1;
m_settings.minorVersion = 1;
m_settings.attributeFlags = ContextSettings::Default;
}
}

16
src/SFML/Window/GlContext.cpp
View File

@ -275,8 +275,6 @@ std::vector<std::string> extensions;
// Load our extensions vector with the supported extensions
void loadExtensions()
{
extensions.clear();
auto glGetErrorFunc = reinterpret_cast<glGetErrorFuncType>(sf::priv::GlContext::getFunction("glGetError"));
auto glGetIntegervFunc = reinterpret_cast<glGetIntegervFuncType>(sf::priv::GlContext::getFunction("glGetIntegerv"));
auto glGetStringFunc = reinterpret_cast<glGetStringFuncType>(sf::priv::GlContext::getFunction("glGetString"));
@ -290,11 +288,14 @@ void loadExtensions()
auto glGetStringiFunc = reinterpret_cast<glGetStringiFuncType>(sf::priv::GlContext::getFunction("glGetStringi"));
if (glGetErrorFunc() == GL_INVALID_ENUM || !glGetStringiFunc)
if (glGetErrorFunc() == GL_INVALID_ENUM || !majorVersion || !glGetStringiFunc)
{
// Try to load the < 3.0 way
const char* extensionString = reinterpret_cast<const char*>(glGetStringFunc(GL_EXTENSIONS));
assert(extensionString);
if (extensionString)
{
extensions.clear();
do
{
@ -306,6 +307,7 @@ void loadExtensions()
extensions.emplace_back(extension, extensionString);
} while (*extensionString++);
}
}
else
{
// Try to load the >= 3.0 way
@ -314,9 +316,13 @@ void loadExtensions()
if (numExtensions)
{
extensions.clear();
for (unsigned int i = 0; i < static_cast<unsigned int>(numExtensions); ++i)
{
const char* extensionString = reinterpret_cast<const char*>(glGetStringiFunc(GL_EXTENSIONS, i));
if (extensionString)
extensions.emplace_back(extensionString);
}
}
@ -807,7 +813,7 @@ void GlContext::initialize(const ContextSettings& requestedSettings)
glGetIntegervFunc(GL_MAJOR_VERSION, &majorVersion);
glGetIntegervFunc(GL_MINOR_VERSION, &minorVersion);
if (glGetErrorFunc() != GL_INVALID_ENUM)
if ((glGetErrorFunc() != GL_INVALID_ENUM) && (majorVersion != 0))
{
m_settings.majorVersion = static_cast<unsigned int>(majorVersion);
m_settings.minorVersion = static_cast<unsigned int>(minorVersion);