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GL/ContextEGL: Use pbuffer when surfaceless not supported

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This commit is contained in:
Connor McLaughlin 2020-11-07 21:41:25 +10:00
parent b6ec587e5b
commit ac89379ca6
2 changed files with 44 additions and 2 deletions
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43
src/common/gl/context_egl.cpp
View file

@ -48,6 +48,15 @@ bool ContextEGL::Initialize(const Version* versions_to_try, size_t num_versions_
}
Log_InfoPrintf("EGL Version: %d.%d", egl_major, egl_minor);
const char* extensions = eglQueryString(m_display, EGL_EXTENSIONS);
if (extensions)
{
Log_InfoPrintf("EGL Extensions: %s", extensions);
m_supports_surfaceless = std::strstr(extensions, "EGL_KHR_surfaceless_context") != nullptr;
}
if (!m_supports_surfaceless)
Log_WarningPrint("EGL implementation does not support surfaceless contexts, emulating with pbuffers");
for (size_t i = 0; i < num_versions_to_try; i++)
{
if (CreateContextAndSurface(versions_to_try[i], nullptr, true))
@ -75,7 +84,7 @@ bool ContextEGL::ChangeSurface(const WindowInfo& new_wi)
}
m_wi = new_wi;
if (m_wi.type != WindowInfo::Type::Surfaceless && !CreateSurface())
if (!CreateSurface())
return false;
if (was_current && !eglMakeCurrent(m_display, m_surface, m_surface, m_context))
@ -139,6 +148,7 @@ std::unique_ptr<Context> ContextEGL::CreateSharedContext(const WindowInfo& wi)
{
std::unique_ptr<ContextEGL> context = std::make_unique<ContextEGL>(wi);
context->m_display = m_display;
context->m_supports_surfaceless = m_supports_surfaceless;
if (!context->CreateContextAndSurface(m_version, m_context, false))
return nullptr;
@ -153,6 +163,14 @@ EGLNativeWindowType ContextEGL::GetNativeWindow(EGLConfig config)
bool ContextEGL::CreateSurface()
{
if (m_wi.type == WindowInfo::Type::Surfaceless)
{
if (m_supports_surfaceless)
return true;
else
return CreatePBufferSurface();
}
EGLNativeWindowType native_window = GetNativeWindow(m_config);
m_surface = eglCreateWindowSurface(m_display, m_config, native_window, nullptr);
if (!m_surface)
@ -177,6 +195,27 @@ bool ContextEGL::CreateSurface()
return true;
}
bool ContextEGL::CreatePBufferSurface()
{
const u32 width = std::max<u32>(m_wi.surface_width, 1);
const u32 height = std::max<u32>(m_wi.surface_height, 1);
// TODO: Format
EGLint attrib_list[] = {
EGL_WIDTH, static_cast<EGLint>(width), EGL_HEIGHT, static_cast<EGLint>(height), EGL_NONE,
};
m_surface = eglCreatePbufferSurface(m_display, m_config, attrib_list);
if (!m_surface)
{
Log_ErrorPrintf("eglCreatePbufferSurface() failed: %d", eglGetError());
return false;
}
Log_DevPrintf("Created %ux%u pbuffer surface", width, height);
return true;
}
bool ContextEGL::CreateContext(const Version& version, EGLContext share_context)
{
int surface_attribs[16] = {
@ -264,7 +303,7 @@ bool ContextEGL::CreateContextAndSurface(const Version& version, EGLContext shar
if (!CreateContext(version, share_context))
return false;
if (m_wi.type != WindowInfo::Type::Surfaceless && !CreateSurface())
if (!CreateSurface())
{
Log_ErrorPrintf("Failed to create surface for context");
eglDestroyContext(m_display, m_context);

3
src/common/gl/context_egl.h
View file

@ -30,12 +30,15 @@ protected:
bool CreateContext(const Version& version, EGLContext share_context);
bool CreateContextAndSurface(const Version& version, EGLContext share_context, bool make_current);
bool CreateSurface();
bool CreatePBufferSurface();
EGLDisplay m_display = EGL_NO_DISPLAY;
EGLSurface m_surface = EGL_NO_SURFACE;
EGLContext m_context = EGL_NO_CONTEXT;
EGLConfig m_config = {};
bool m_supports_surfaceless = false;
};
} // namespace GL