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Refactor EGL handling
This commit is contained in:
Drew DeVault
parent
4aaf76cb66
commit
c24351681f
26 changed files with 156 additions and 98 deletions
243
render/egl.c
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243
render/egl.c
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#include <EGL/egl.h>
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#include <EGL/eglext.h>
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#include <GLES2/gl2.h>
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#include <gbm.h> // GBM_FORMAT_XRGB8888
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#include <stdlib.h>
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#include <wlr/util/log.h>
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#include <wlr/egl.h>
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// Extension documentation
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// https://www.khronos.org/registry/EGL/extensions/KHR/EGL_KHR_image_base.txt.
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// https://cgit.freedesktop.org/mesa/mesa/tree/docs/specs/WL_bind_wayland_display.spec
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const char *egl_error(void) {
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switch (eglGetError()) {
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case EGL_SUCCESS:
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return "Success";
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case EGL_NOT_INITIALIZED:
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return "Not initialized";
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case EGL_BAD_ACCESS:
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return "Bad access";
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case EGL_BAD_ALLOC:
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return "Bad alloc";
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case EGL_BAD_ATTRIBUTE:
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return "Bad attribute";
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case EGL_BAD_CONTEXT:
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return "Bad Context";
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case EGL_BAD_CONFIG:
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return "Bad Config";
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case EGL_BAD_CURRENT_SURFACE:
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return "Bad current surface";
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case EGL_BAD_DISPLAY:
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return "Bad display";
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case EGL_BAD_SURFACE:
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return "Bad surface";
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case EGL_BAD_MATCH:
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return "Bad match";
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case EGL_BAD_PARAMETER:
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return "Bad parameter";
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case EGL_BAD_NATIVE_PIXMAP:
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return "Bad native pixmap";
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case EGL_BAD_NATIVE_WINDOW:
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return "Bad native window";
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case EGL_CONTEXT_LOST:
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return "Context lost";
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default:
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return "Unknown";
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}
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}
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static bool egl_exts(struct wlr_egl *egl) {
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egl->get_platform_display = (PFNEGLGETPLATFORMDISPLAYEXTPROC)
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eglGetProcAddress("eglGetPlatformDisplayEXT");
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if (!egl->get_platform_display) {
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wlr_log(L_ERROR, "Failed to load EGL extension 'eglGetPlatformDisplayEXT'");
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return false;
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}
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egl->create_platform_window_surface = (PFNEGLCREATEPLATFORMWINDOWSURFACEEXTPROC)
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eglGetProcAddress("eglCreatePlatformWindowSurfaceEXT");
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if (!egl->get_platform_display) {
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wlr_log(L_ERROR,
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"Failed to load EGL extension 'eglCreatePlatformWindowSurfaceEXT'");
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return false;
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}
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return true;
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}
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static bool egl_get_config(EGLDisplay disp, EGLConfig *out, EGLenum platform) {
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EGLint count = 0, matched = 0, ret;
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ret = eglGetConfigs(disp, NULL, 0, &count);
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if (ret == EGL_FALSE || count == 0) {
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wlr_log(L_ERROR, "eglGetConfigs returned no configs");
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return false;
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}
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EGLConfig configs[count];
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ret = eglChooseConfig(disp, NULL, configs, count, &matched);
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if (ret == EGL_FALSE) {
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wlr_log(L_ERROR, "eglChooseConfig failed");
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return false;
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}
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for (int i = 0; i < matched; ++i) {
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EGLint gbm_format;
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if (platform == EGL_PLATFORM_WAYLAND_EXT) {
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*out = configs[i];
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return true;
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}
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if (!eglGetConfigAttrib(disp,
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configs[i],
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EGL_NATIVE_VISUAL_ID,
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&gbm_format)) {
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continue;
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}
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if (gbm_format == GBM_FORMAT_ARGB8888) {
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*out = configs[i];
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return true;
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}
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}
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wlr_log(L_ERROR, "no valid egl config found");
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return false;
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}
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bool wlr_egl_init(struct wlr_egl *egl, EGLenum platform,
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void *remote_display) {
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if (!egl_exts(egl)) {
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return false;
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}
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if (eglBindAPI(EGL_OPENGL_ES_API) == EGL_FALSE) {
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wlr_log(L_ERROR, "Failed to bind to the OpenGL ES API: %s", egl_error());
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goto error;
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}
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egl->display = egl->get_platform_display(platform, remote_display, NULL);
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if (egl->display == EGL_NO_DISPLAY) {
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wlr_log(L_ERROR, "Failed to create EGL display: %s", egl_error());
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goto error;
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}
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EGLint major, minor;
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if (eglInitialize(egl->display, &major, &minor) == EGL_FALSE) {
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wlr_log(L_ERROR, "Failed to initialize EGL: %s", egl_error());
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goto error;
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}
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if (!egl_get_config(egl->display, &egl->config, platform)) {
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wlr_log(L_ERROR, "Failed to get EGL config");
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goto error;
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}
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static const EGLint attribs[] = {EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE};
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egl->context = eglCreateContext(egl->display, egl->config,
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EGL_NO_CONTEXT, attribs);
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if (egl->context == EGL_NO_CONTEXT) {
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wlr_log(L_ERROR, "Failed to create EGL context: %s", egl_error());
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goto error;
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}
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eglMakeCurrent(egl->display, EGL_NO_SURFACE, EGL_NO_SURFACE, egl->context);
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egl->egl_exts = eglQueryString(egl->display, EGL_EXTENSIONS);
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if (strstr(egl->egl_exts, "EGL_WL_bind_wayland_display") == NULL ||
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strstr(egl->egl_exts, "EGL_KHR_image_base") == NULL) {
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wlr_log(L_ERROR, "Required egl extensions not supported");
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goto error;
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}
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egl->eglCreateImageKHR = (PFNEGLCREATEIMAGEKHRPROC)
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eglGetProcAddress("eglCreateImageKHR");
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egl->eglDestroyImageKHR = (PFNEGLDESTROYIMAGEKHRPROC)
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eglGetProcAddress("eglDestroyImageKHR");
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egl->eglQueryWaylandBufferWL = (PFNEGLQUERYWAYLANDBUFFERWL)
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(void*) eglGetProcAddress("eglQueryWaylandBufferWL");
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egl->eglBindWaylandDisplayWL = (PFNEGLBINDWAYLANDDISPLAYWL)
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(void*) eglGetProcAddress("eglBindWaylandDisplayWL");
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egl->eglUnbindWaylandDisplayWL = (PFNEGLUNBINDWAYLANDDISPLAYWL)
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(void*) eglGetProcAddress("eglUnbindWaylandDisplayWL");
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egl->gl_exts = (const char*) glGetString(GL_EXTENSIONS);
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wlr_log(L_INFO, "Using EGL %d.%d", (int)major, (int)minor);
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wlr_log(L_INFO, "Supported EGL extensions: %s", egl->egl_exts);
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wlr_log(L_INFO, "Using %s", glGetString(GL_VERSION));
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wlr_log(L_INFO, "Supported OpenGL ES extensions: %s", egl->gl_exts);
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return true;
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error:
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eglTerminate(egl->display);
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eglReleaseThread();
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eglMakeCurrent(EGL_NO_DISPLAY, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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return false;
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}
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void wlr_egl_free(struct wlr_egl *egl) {
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if (egl->wl_display && egl->eglUnbindWaylandDisplayWL) {
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egl->eglUnbindWaylandDisplayWL(egl->display, egl->wl_display);
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}
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eglDestroyContext(egl->display, egl->context);
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eglTerminate(egl->display);
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eglReleaseThread();
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eglMakeCurrent(EGL_NO_DISPLAY, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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}
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bool wlr_egl_bind_display(struct wlr_egl *egl, struct wl_display *local_display) {
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if (!egl->eglBindWaylandDisplayWL) {
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return false;
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}
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if (egl->eglBindWaylandDisplayWL(egl->display, local_display)) {
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egl->wl_display = local_display;
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return true;
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}
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return false;
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}
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bool wlr_egl_query_buffer(struct wlr_egl *egl, struct wl_resource *buf,
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int attrib, int *value) {
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if (!egl->eglQueryWaylandBufferWL) {
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return false;
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}
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return egl->eglQueryWaylandBufferWL(egl->display, buf, attrib, value);
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}
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EGLImage wlr_egl_create_image(struct wlr_egl *egl, EGLenum target,
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EGLClientBuffer buffer, const EGLint *attribs) {
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if (!egl->eglCreateImageKHR) {
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return false;
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}
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return egl->eglCreateImageKHR(egl->display, egl->context, target,
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buffer, attribs);
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}
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bool wlr_egl_destroy_image(struct wlr_egl *egl, EGLImage image) {
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if (!egl->eglDestroyImageKHR) {
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return false;
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}
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egl->eglDestroyImageKHR(egl->display, image);
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return true;
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}
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EGLSurface wlr_egl_create_surface(struct wlr_egl *egl, void *window) {
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EGLSurface surf = egl->create_platform_window_surface(egl->display, egl->config,
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window, NULL);
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if (surf == EGL_NO_SURFACE) {
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wlr_log(L_ERROR, "Failed to create EGL surface: %s", egl_error());
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return EGL_NO_SURFACE;
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}
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return surf;
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}
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