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client egl context and viewport in kotlin UI

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This commit is contained in:
omigamedev
2025-12-28 21:46:18 +01:00
parent 19400fd2b2
commit 6830c61e31
5 changed files with 175 additions and 15 deletions
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57
src/main/cpp/egl_context.cpp
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@@ -2,8 +2,10 @@
#include "logger.h"
#include <glad/gles2.h>
#include <glad/egl.h>
#include <android/native_window_jni.h>
#include <vector>
bool egl::Context::create()
bool egl::Context::create(ANativeWindow* window)
{
int version = gladLoaderLoadEGL(EGL_NO_DISPLAY);
if (version == 0)
@@ -12,7 +14,7 @@ bool egl::Context::create()
return false;
}
if (m_display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
m_display == EGL_NO_DISPLAY)
m_display == EGL_NO_DISPLAY)
{
Logger::Log("eglGetDisplay failed");
return false;
@@ -24,14 +26,22 @@ bool egl::Context::create()
return false;
}
version = gladLoaderLoadEGL(EGL_DEFAULT_DISPLAY);
const EGLint config_attribs[] =
std::vector<EGLint> config_attribs =
{
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES3_BIT,
EGL_NONE,
};
if (window)
{
config_attribs.append_range(std::to_array({
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_BLUE_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_RED_SIZE, 8,
}));
}
config_attribs.push_back(EGL_NONE);
EGLint num_configs;
if (!eglChooseConfig(m_display, config_attribs, &m_config, 1, &num_configs) || num_configs == 0)
if (!eglChooseConfig(m_display, config_attribs.data(), &m_config, 1, &num_configs) || num_configs == 0)
{
Logger::Log("eglChooseConfig failed");
return false;
@@ -48,11 +58,22 @@ bool egl::Context::create()
Logger::Log("eglCreateContext failed");
return false;
}
if (!eglMakeCurrent(m_display, EGL_NO_SURFACE, EGL_NO_SURFACE, m_context))
if (window)
{
m_surface = eglCreateWindowSurface(m_display, m_config, window, nullptr);
m_native_window = window;
}
if (!eglMakeCurrent(m_display, m_surface, m_surface, m_context))
{
Logger::Log("eglMakeCurrent failed");
return false;
}
int gl_version = gladLoaderLoadGLES2();
if (gl_version == 0)
{
Logger::Log("glad failed to load GLES2");
return false;
}
return true;
}
@@ -61,18 +82,36 @@ void egl::Context::destroy()
if (m_display != EGL_NO_DISPLAY)
{
eglMakeCurrent(m_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
if (m_surface != EGL_NO_SURFACE)
{
eglDestroySurface(m_display, m_surface);
}
if (m_context != EGL_NO_CONTEXT)
{
eglDestroyContext(m_display, m_context);
}
if (m_native_window)
{
ANativeWindow_release(m_native_window);
}
eglTerminate(m_display);
}
m_display = EGL_NO_DISPLAY;
m_context = EGL_NO_CONTEXT;
m_config = EGL_NO_CONFIG_KHR;
m_surface = EGL_NO_SURFACE;
m_native_window = nullptr;
}
egl::Context::Context()
: m_display(EGL_NO_DISPLAY), m_config(EGL_NO_CONFIG_KHR), m_context(EGL_NO_CONTEXT)
egl::Context::Context() :
m_display(EGL_NO_DISPLAY), m_config(EGL_NO_CONFIG_KHR),
m_context(EGL_NO_CONTEXT), m_surface(EGL_NO_SURFACE),
m_native_window(nullptr)
{
Logger::Log("egl::Context::Context");
}
void egl::Context::swap()
{
eglSwapBuffers(m_display, m_surface);
}