mirror of
https://github.com/godotengine/godot.git
synced 2024-12-03 09:52:18 +08:00
514 lines
13 KiB
C
514 lines
13 KiB
C
#include <assert.h>
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#include <ctype.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/keycodes.h>
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#include <time.h>
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#include "bbutil.h"
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EGLDisplay egl_disp;
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EGLSurface egl_surf;
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static EGLConfig egl_conf;
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static EGLContext egl_ctx;
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static screen_context_t screen_ctx;
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static screen_window_t screen_win;
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static screen_display_t screen_disp;
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static void
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bbutil_egl_perror(const char *msg) {
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static const char *errmsg[] = {
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"function succeeded",
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"EGL is not initialized, or could not be initialized, for the specified display",
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"cannot access a requested resource",
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"failed to allocate resources for the requested operation",
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"an unrecognized attribute or attribute value was passed in an attribute list",
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"an EGLConfig argument does not name a valid EGLConfig",
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"an EGLContext argument does not name a valid EGLContext",
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"the current surface of the calling thread is no longer valid",
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"an EGLDisplay argument does not name a valid EGLDisplay",
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"arguments are inconsistent",
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"an EGLNativePixmapType argument does not refer to a valid native pixmap",
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"an EGLNativeWindowType argument does not refer to a valid native window",
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"one or more argument values are invalid",
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"an EGLSurface argument does not name a valid surface configured for rendering",
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"a power management event has occurred",
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};
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fprintf(stderr, "%s: %s\n", msg, errmsg[eglGetError() - EGL_SUCCESS]);
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}
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EGLConfig bbutil_choose_config(EGLDisplay egl_disp, enum RENDERING_API api) {
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EGLConfig egl_conf = (EGLConfig)0;
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EGLConfig *egl_configs;
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EGLint egl_num_configs;
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EGLint val;
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EGLBoolean rc;
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EGLint i;
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rc = eglGetConfigs(egl_disp, NULL, 0, &egl_num_configs);
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if (rc != EGL_TRUE) {
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bbutil_egl_perror("eglGetConfigs");
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return egl_conf;
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}
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if (egl_num_configs == 0) {
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fprintf(stderr, "eglGetConfigs: could not find a configuration\n");
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return egl_conf;
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}
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egl_configs = malloc(egl_num_configs * sizeof(*egl_configs));
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if (egl_configs == NULL) {
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fprintf(stderr, "could not allocate memory for %d EGL configs\n", egl_num_configs);
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return egl_conf;
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}
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rc = eglGetConfigs(egl_disp, egl_configs,
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egl_num_configs, &egl_num_configs);
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if (rc != EGL_TRUE) {
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bbutil_egl_perror("eglGetConfigs");
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free(egl_configs);
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return egl_conf;
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}
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for (i = 0; i < egl_num_configs; i++) {
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eglGetConfigAttrib(egl_disp, egl_configs[i], EGL_SURFACE_TYPE, &val);
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if (!(val & EGL_WINDOW_BIT)) {
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continue;
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}
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eglGetConfigAttrib(egl_disp, egl_configs[i], EGL_RENDERABLE_TYPE, &val);
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if (!(val & api)) {
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continue;
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}
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eglGetConfigAttrib(egl_disp, egl_configs[i], EGL_DEPTH_SIZE, &val);
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if ((api & (GL_ES_1|GL_ES_2)) && (val == 0)) {
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continue;
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}
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eglGetConfigAttrib(egl_disp, egl_configs[i], EGL_RED_SIZE, &val);
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if (val != 8) {
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continue;
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}
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eglGetConfigAttrib(egl_disp, egl_configs[i], EGL_GREEN_SIZE, &val);
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if (val != 8) {
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continue;
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}
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eglGetConfigAttrib(egl_disp, egl_configs[i], EGL_BLUE_SIZE, &val);
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if (val != 8) {
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continue;
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}
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eglGetConfigAttrib(egl_disp, egl_configs[i], EGL_BUFFER_SIZE, &val);
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if (val != 32) {
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continue;
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}
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egl_conf = egl_configs[i];
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break;
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}
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free(egl_configs);
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if (egl_conf == (EGLConfig)0) {
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fprintf(stderr, "bbutil_choose_config: could not find a matching configuration\n");
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}
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return egl_conf;
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}
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int
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bbutil_init_egl(screen_context_t ctx, enum RENDERING_API api) {
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int usage;
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int format = SCREEN_FORMAT_RGBX8888;
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int nbuffers = 2;
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EGLint interval = 1;
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int rc;
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EGLint attributes[] = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE };
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if (api == GL_ES_1) {
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usage = SCREEN_USAGE_OPENGL_ES1 | SCREEN_USAGE_ROTATION;
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} else if (api == GL_ES_2) {
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usage = SCREEN_USAGE_OPENGL_ES2 | SCREEN_USAGE_ROTATION;
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} else if (api == VG) {
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usage = SCREEN_USAGE_OPENVG | SCREEN_USAGE_ROTATION;
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} else {
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fprintf(stderr, "invalid api setting\n");
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return EXIT_FAILURE;
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}
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//Simple egl initialization
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screen_ctx = ctx;
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egl_disp = eglGetDisplay(EGL_DEFAULT_DISPLAY);
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if (egl_disp == EGL_NO_DISPLAY) {
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bbutil_egl_perror("eglGetDisplay");
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bbutil_terminate();
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return EXIT_FAILURE;
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}
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rc = eglInitialize(egl_disp, NULL, NULL);
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if (rc != EGL_TRUE) {
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bbutil_egl_perror("eglInitialize");
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bbutil_terminate();
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return EXIT_FAILURE;
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}
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if ((api == GL_ES_1) || (api == GL_ES_2)) {
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rc = eglBindAPI(EGL_OPENGL_ES_API);
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} else if (api == VG) {
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rc = eglBindAPI(EGL_OPENVG_API);
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}
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if (rc != EGL_TRUE) {
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bbutil_egl_perror("eglBindApi");
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bbutil_terminate();
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return EXIT_FAILURE;
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}
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egl_conf = bbutil_choose_config(egl_disp, api);
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if (egl_conf == (EGLConfig)0) {
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bbutil_terminate();
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return EXIT_FAILURE;
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}
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if (api == GL_ES_2) {
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egl_ctx = eglCreateContext(egl_disp, egl_conf, EGL_NO_CONTEXT, attributes);
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} else {
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egl_ctx = eglCreateContext(egl_disp, egl_conf, EGL_NO_CONTEXT, NULL);
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}
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if (egl_ctx == EGL_NO_CONTEXT) {
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bbutil_egl_perror("eglCreateContext");
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bbutil_terminate();
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return EXIT_FAILURE;
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}
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rc = screen_create_window(&screen_win, screen_ctx);
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if (rc) {
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perror("screen_create_window");
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bbutil_terminate();
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return EXIT_FAILURE;
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}
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rc = screen_set_window_property_iv(screen_win, SCREEN_PROPERTY_FORMAT, &format);
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if (rc) {
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perror("screen_set_window_property_iv(SCREEN_PROPERTY_FORMAT)");
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bbutil_terminate();
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return EXIT_FAILURE;
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}
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rc = screen_set_window_property_iv(screen_win, SCREEN_PROPERTY_USAGE, &usage);
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if (rc) {
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perror("screen_set_window_property_iv(SCREEN_PROPERTY_USAGE)");
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bbutil_terminate();
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return EXIT_FAILURE;
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}
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rc = screen_get_window_property_pv(screen_win, SCREEN_PROPERTY_DISPLAY, (void **)&screen_disp);
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if (rc) {
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perror("screen_get_window_property_pv");
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bbutil_terminate();
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return EXIT_FAILURE;
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}
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int screen_resolution[2];
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rc = screen_get_display_property_iv(screen_disp, SCREEN_PROPERTY_SIZE, screen_resolution);
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if (rc) {
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perror("screen_get_display_property_iv");
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bbutil_terminate();
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return EXIT_FAILURE;
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}
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int angle = atoi(getenv("ORIENTATION"));
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screen_display_mode_t screen_mode;
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rc = screen_get_display_property_pv(screen_disp, SCREEN_PROPERTY_MODE, (void**)&screen_mode);
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if (rc) {
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perror("screen_get_display_property_pv");
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bbutil_terminate();
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return EXIT_FAILURE;
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}
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int size[2];
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rc = screen_get_window_property_iv(screen_win, SCREEN_PROPERTY_BUFFER_SIZE, size);
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if (rc) {
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perror("screen_get_window_property_iv");
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bbutil_terminate();
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return EXIT_FAILURE;
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}
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int buffer_size[2] = {size[0], size[1]};
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if ((angle == 0) || (angle == 180)) {
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if (((screen_mode.width > screen_mode.height) && (size[0] < size[1])) ||
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((screen_mode.width < screen_mode.height) && (size[0] > size[1]))) {
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buffer_size[1] = size[0];
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buffer_size[0] = size[1];
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}
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} else if ((angle == 90) || (angle == 270)){
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if (((screen_mode.width > screen_mode.height) && (size[0] > size[1])) ||
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((screen_mode.width < screen_mode.height && size[0] < size[1]))) {
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buffer_size[1] = size[0];
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buffer_size[0] = size[1];
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}
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} else {
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fprintf(stderr, "Navigator returned an unexpected orientation angle.\n");
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bbutil_terminate();
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return EXIT_FAILURE;
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}
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rc = screen_set_window_property_iv(screen_win, SCREEN_PROPERTY_BUFFER_SIZE, buffer_size);
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if (rc) {
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perror("screen_set_window_property_iv");
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bbutil_terminate();
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return EXIT_FAILURE;
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}
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rc = screen_set_window_property_iv(screen_win, SCREEN_PROPERTY_ROTATION, &angle);
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if (rc) {
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perror("screen_set_window_property_iv");
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bbutil_terminate();
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return EXIT_FAILURE;
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}
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rc = screen_create_window_buffers(screen_win, nbuffers);
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if (rc) {
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perror("screen_create_window_buffers");
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bbutil_terminate();
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return EXIT_FAILURE;
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}
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rc = screen_create_window_group(screen_win, get_window_group_id());
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if (rc) {
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perror("screen_create_window_group");
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bbutil_terminate();
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return EXIT_FAILURE;
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}
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/* if (screen_create_window_group(screen_win, get_window_group_id()) != 0) goto fail; */
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int idle_mode = SCREEN_IDLE_MODE_KEEP_AWAKE;
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screen_set_window_property_iv(screen_win, SCREEN_PROPERTY_IDLE_MODE, &idle_mode);
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egl_surf = eglCreateWindowSurface(egl_disp, egl_conf, screen_win, NULL);
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if (egl_surf == EGL_NO_SURFACE) {
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bbutil_egl_perror("eglCreateWindowSurface");
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bbutil_terminate();
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return EXIT_FAILURE;
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}
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rc = eglMakeCurrent(egl_disp, egl_surf, egl_surf, egl_ctx);
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if (rc != EGL_TRUE) {
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bbutil_egl_perror("eglMakeCurrent");
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bbutil_terminate();
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return EXIT_FAILURE;
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}
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rc = eglSwapInterval(egl_disp, interval);
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if (rc != EGL_TRUE) {
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bbutil_egl_perror("eglSwapInterval");
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bbutil_terminate();
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return EXIT_FAILURE;
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}
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return EXIT_SUCCESS;
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}
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int
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bbutil_init_gl2d() {
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#if 0
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EGLint surface_width, surface_height;
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if ((egl_disp == EGL_NO_DISPLAY) || (egl_surf == EGL_NO_SURFACE) ){
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return EXIT_FAILURE;
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}
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eglQuerySurface(egl_disp, egl_surf, EGL_WIDTH, &surface_width);
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eglQuerySurface(egl_disp, egl_surf, EGL_HEIGHT, &surface_height);
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glShadeModel(GL_SMOOTH);
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glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
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glViewport(0, 0, surface_width, surface_height);
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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glOrthof(0.0f, (float)(surface_width) / (float)(surface_height), 0.0f, 1.0f, -1.0f, 1.0f);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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#endif
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return EXIT_SUCCESS;
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}
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int
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bbutil_init(screen_context_t ctx, enum RENDERING_API api) {
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if (EXIT_SUCCESS != bbutil_init_egl(ctx, api)) {
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return EXIT_FAILURE;
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}
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if ((GL_ES_1 == api) && (EXIT_SUCCESS != bbutil_init_gl2d())) {
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return EXIT_FAILURE;
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}
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return EXIT_SUCCESS;
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}
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int bbutil_is_flipped() {
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int ret;
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screen_get_window_property_iv(screen_win, SCREEN_PROPERTY_FLIP, &ret);
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return ret;
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};
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int bbutil_get_rotation() {
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int ret;
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screen_get_window_property_iv(screen_win, SCREEN_PROPERTY_ROTATION, &ret);
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return ret;
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};
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void
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bbutil_terminate() {
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//Typical EGL cleanup
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if (egl_disp != EGL_NO_DISPLAY) {
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eglMakeCurrent(egl_disp, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
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if (egl_surf != EGL_NO_SURFACE) {
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eglDestroySurface(egl_disp, egl_surf);
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egl_surf = EGL_NO_SURFACE;
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}
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if (egl_ctx != EGL_NO_CONTEXT) {
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eglDestroyContext(egl_disp, egl_ctx);
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egl_ctx = EGL_NO_CONTEXT;
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}
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if (screen_win != NULL) {
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screen_destroy_window(screen_win);
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screen_win = NULL;
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}
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eglTerminate(egl_disp);
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egl_disp = EGL_NO_DISPLAY;
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}
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eglReleaseThread();
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}
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void
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bbutil_swap() {
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int rc = eglSwapBuffers(egl_disp, egl_surf);
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if (rc != EGL_TRUE) {
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bbutil_egl_perror("eglSwapBuffers");
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}
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}
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void
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bbutil_clear() {
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glClear(GL_COLOR_BUFFER_BIT);
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}
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char *
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get_window_group_id()
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{
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static char s_window_group_id[16] = "";
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if (s_window_group_id[0] == '\0') {
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snprintf(s_window_group_id, sizeof(s_window_group_id), "%d", getpid());
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}
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return s_window_group_id;
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}
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int bbutil_rotate_screen_surface(int angle) {
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int rc, rotation, skip = 1, temp;;
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EGLint interval = 1;
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int size[2];
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if ((angle != 0) && (angle != 90) && (angle != 180) && (angle != 270)) {
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fprintf(stderr, "Invalid angle\n");
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return EXIT_FAILURE;
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}
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rc = screen_get_window_property_iv(screen_win, SCREEN_PROPERTY_ROTATION, &rotation);
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if (rc) {
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perror("screen_set_window_property_iv");
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return EXIT_FAILURE;
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}
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rc = screen_get_window_property_iv(screen_win, SCREEN_PROPERTY_BUFFER_SIZE, size);
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if (rc) {
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perror("screen_set_window_property_iv");
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return EXIT_FAILURE;
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}
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switch (angle - rotation) {
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case -270:
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case -90:
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case 90:
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case 270:
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temp = size[0];
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size[0] = size[1];
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size[1] = temp;
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skip = 0;
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break;
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}
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if (!skip) {
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rc = eglMakeCurrent(egl_disp, NULL, NULL, NULL);
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if (rc != EGL_TRUE) {
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bbutil_egl_perror("eglMakeCurrent");
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return EXIT_FAILURE;
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}
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rc = eglDestroySurface(egl_disp, egl_surf);
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if (rc != EGL_TRUE) {
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bbutil_egl_perror("eglMakeCurrent");
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return EXIT_FAILURE;
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}
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rc = screen_set_window_property_iv(screen_win, SCREEN_PROPERTY_SOURCE_SIZE, size);
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if (rc) {
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perror("screen_set_window_property_iv");
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return EXIT_FAILURE;
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}
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rc = screen_set_window_property_iv(screen_win, SCREEN_PROPERTY_BUFFER_SIZE, size);
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if (rc) {
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perror("screen_set_window_property_iv");
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return EXIT_FAILURE;
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}
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egl_surf = eglCreateWindowSurface(egl_disp, egl_conf, screen_win, NULL);
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if (egl_surf == EGL_NO_SURFACE) {
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bbutil_egl_perror("eglCreateWindowSurface");
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return EXIT_FAILURE;
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}
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rc = eglMakeCurrent(egl_disp, egl_surf, egl_surf, egl_ctx);
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if (rc != EGL_TRUE) {
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bbutil_egl_perror("eglMakeCurrent");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
rc = eglSwapInterval(egl_disp, interval);
|
|
if (rc != EGL_TRUE) {
|
|
bbutil_egl_perror("eglSwapInterval");
|
|
return EXIT_FAILURE;
|
|
}
|
|
}
|
|
|
|
rc = screen_set_window_property_iv(screen_win, SCREEN_PROPERTY_ROTATION, &angle);
|
|
if (rc) {
|
|
perror("screen_set_window_property_iv");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|