121 lines
3.4 KiB
C++
121 lines
3.4 KiB
C++
#include "cube-egl.h"
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#include "cube.h"
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#include <kms++util/kms++util.h>
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using namespace std;
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static void print_egl_config(EGLDisplay dpy, EGLConfig cfg)
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{
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auto getconf = [dpy, cfg](EGLint a) { EGLint v = -1; eglGetConfigAttrib(dpy, cfg, a, &v); return v; };
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printf("EGL Config %d: color buf %d/%d/%d/%d = %d, depth %d, stencil %d, native visualid %d, native visualtype %d\n",
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getconf(EGL_CONFIG_ID),
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getconf(EGL_ALPHA_SIZE),
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getconf(EGL_RED_SIZE),
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getconf(EGL_GREEN_SIZE),
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getconf(EGL_BLUE_SIZE),
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getconf(EGL_BUFFER_SIZE),
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getconf(EGL_DEPTH_SIZE),
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getconf(EGL_STENCIL_SIZE),
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getconf(EGL_NATIVE_VISUAL_ID),
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getconf(EGL_NATIVE_VISUAL_TYPE));
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}
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EglState::EglState(void* native_display)
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{
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EGLBoolean b;
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EGLint major, minor, n;
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static const EGLint context_attribs[] = {
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EGL_CONTEXT_CLIENT_VERSION, 2,
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EGL_NONE
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};
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static const EGLint config_attribs[] = {
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EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
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EGL_RED_SIZE, 8,
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EGL_GREEN_SIZE, 8,
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EGL_BLUE_SIZE, 8,
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EGL_ALPHA_SIZE, 0,
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EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
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EGL_NONE
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};
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m_display = eglGetDisplay((EGLNativeDisplayType)native_display);
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FAIL_IF(!m_display, "failed to get egl display");
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b = eglInitialize(m_display, &major, &minor);
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FAIL_IF(!b, "failed to initialize");
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if (s_verbose) {
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printf("Using display %p with EGL version %d.%d\n", m_display, major, minor);
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printf("EGL_VENDOR: %s\n", eglQueryString(m_display, EGL_VENDOR));
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printf("EGL_VERSION: %s\n", eglQueryString(m_display, EGL_VERSION));
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printf("EGL_EXTENSIONS: %s\n", eglQueryString(m_display, EGL_EXTENSIONS));
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printf("EGL_CLIENT_APIS: %s\n", eglQueryString(m_display, EGL_CLIENT_APIS));
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}
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b = eglBindAPI(EGL_OPENGL_ES_API);
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FAIL_IF(!b, "failed to bind api EGL_OPENGL_ES_API");
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if (s_verbose) {
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EGLint numConfigs;
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b = eglGetConfigs(m_display, nullptr, 0, &numConfigs);
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FAIL_IF(!b, "failed to get number of configs");
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EGLConfig configs[numConfigs];
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b = eglGetConfigs(m_display, configs, numConfigs, &numConfigs);
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printf("Available configs:\n");
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for (int i = 0; i < numConfigs; ++i)
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print_egl_config(m_display, configs[i]);
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}
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b = eglChooseConfig(m_display, config_attribs, &m_config, 1, &n);
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FAIL_IF(!b || n != 1, "failed to choose config");
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if (s_verbose) {
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printf("Chosen config:\n");
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print_egl_config(m_display, m_config);
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}
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m_context = eglCreateContext(m_display, m_config, EGL_NO_CONTEXT, context_attribs);
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FAIL_IF(!m_context, "failed to create context");
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EGLBoolean ok = eglMakeCurrent(m_display, EGL_NO_SURFACE, EGL_NO_SURFACE, m_context);
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FAIL_IF(!ok, "eglMakeCurrent() failed");
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}
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EglState::~EglState()
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{
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eglMakeCurrent(m_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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eglTerminate(m_display);
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}
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EglSurface::EglSurface(const EglState& egl, void* native_window)
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: egl(egl)
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{
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esurface = eglCreateWindowSurface(egl.display(), egl.config(), (EGLNativeWindowType)native_window, NULL);
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FAIL_IF(esurface == EGL_NO_SURFACE, "failed to create egl surface");
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}
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EglSurface::~EglSurface()
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{
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eglDestroySurface(egl.display(), esurface);
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}
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void EglSurface::make_current()
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{
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EGLBoolean ok = eglMakeCurrent(egl.display(), esurface, esurface, egl.context());
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FAIL_IF(!ok, "eglMakeCurrent() failed");
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}
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void EglSurface::swap_buffers()
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{
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EGLBoolean ok = eglSwapBuffers(egl.display(), esurface);
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FAIL_IF(!ok, "eglMakeCurrent() failed");
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}
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