diff --git a/clients/Makefile.am b/clients/Makefile.am index a6927d79..86fe535e 100644 --- a/clients/Makefile.am +++ b/clients/Makefile.am @@ -41,11 +41,16 @@ endif if BUILD_SIMPLE_EGL_CLIENTS simple_egl_clients_programs = \ - simple-egl + simple-egl \ + transformed simple_egl_SOURCES = simple-egl.c simple_egl_CPPFLAGS = $(SIMPLE_EGL_CLIENT_CFLAGS) simple_egl_LDADD = $(SIMPLE_EGL_CLIENT_LIBS) -lm + +transformed_SOURCES = transformed.c +transformed_CPPFLAGS = $(SIMPLE_EGL_CLIENT_CFLAGS) +transformed_LDADD = $(SIMPLE_EGL_CLIENT_LIBS) -lm endif if BUILD_CLIENTS diff --git a/clients/transformed.c b/clients/transformed.c new file mode 100644 index 00000000..9c019fbb --- /dev/null +++ b/clients/transformed.c @@ -0,0 +1,787 @@ +/* + * Copyright © 2011 Benjamin Franzke + * Copyright © 2012 Intel Corporation + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that copyright + * notice and this permission notice appear in supporting documentation, and + * that the name of the copyright holders not be used in advertising or + * publicity pertaining to distribution of the software without specific, + * written prior permission. The copyright holders make no representations + * about the suitability of this software for any purpose. It is provided "as + * is" without express or implied warranty. + * + * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE + * OF THIS SOFTWARE. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include + +#include +#include + +#include +#include + +struct window; +struct seat; + +struct display { + struct wl_display *display; + struct wl_registry *registry; + struct wl_compositor *compositor; + struct wl_shell *shell; + struct wl_seat *seat; + struct wl_pointer *pointer; + struct wl_keyboard *keyboard; + struct wl_shm *shm; + struct wl_list output_list; + struct { + EGLDisplay dpy; + EGLContext ctx; + EGLConfig conf; + } egl; + struct window *window; +}; + +struct output { + struct wl_output *output; + int transform; + struct wl_list link; +}; + +struct geometry { + int width, height; +}; + +struct window { + struct display *display; + struct geometry geometry, window_size; + struct { + GLuint fbo; + GLuint color_rbo; + + GLuint transform_uniform; + + GLuint pos; + GLuint col; + } gl; + + struct output *output; + struct wl_egl_window *native; + struct wl_surface *surface; + struct wl_shell_surface *shell_surface; + EGLSurface egl_surface; + struct wl_callback *callback; + int fullscreen, configured; +}; + +static const char *vert_shader_text = + "uniform mat4 transform;\n" + "attribute vec4 pos;\n" + "attribute vec4 color;\n" + "varying vec4 v_color;\n" + "void main() {\n" + " gl_Position = transform * pos;\n" + " v_color = color;\n" + "}\n"; + +static const char *frag_shader_text = + "precision mediump float;\n" + "varying vec4 v_color;\n" + "void main() {\n" + " gl_FragColor = v_color;\n" + "}\n"; + +static int running = 1; + +static void +init_egl(struct display *display) +{ + static const EGLint context_attribs[] = { + EGL_CONTEXT_CLIENT_VERSION, 2, + EGL_NONE + }; + + EGLint config_attribs[] = { + EGL_SURFACE_TYPE, EGL_WINDOW_BIT, + EGL_RED_SIZE, 1, + EGL_GREEN_SIZE, 1, + EGL_BLUE_SIZE, 1, + EGL_ALPHA_SIZE, 0, + EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, + EGL_NONE + }; + + EGLint major, minor, n; + EGLBoolean ret; + + display->egl.dpy = eglGetDisplay(display->display); + assert(display->egl.dpy); + + ret = eglInitialize(display->egl.dpy, &major, &minor); + assert(ret == EGL_TRUE); + ret = eglBindAPI(EGL_OPENGL_ES_API); + assert(ret == EGL_TRUE); + + ret = eglChooseConfig(display->egl.dpy, config_attribs, + &display->egl.conf, 1, &n); + assert(ret && n == 1); + + display->egl.ctx = eglCreateContext(display->egl.dpy, + display->egl.conf, + EGL_NO_CONTEXT, context_attribs); + assert(display->egl.ctx); + +} + +static void +fini_egl(struct display *display) +{ + /* Required, otherwise segfault in egl_dri2.c: dri2_make_current() + * on eglReleaseThread(). */ + eglMakeCurrent(display->egl.dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, + EGL_NO_CONTEXT); + + eglTerminate(display->egl.dpy); + eglReleaseThread(); +} + +static GLuint +create_shader(struct window *window, const char *source, GLenum shader_type) +{ + GLuint shader; + GLint status; + + shader = glCreateShader(shader_type); + assert(shader != 0); + + glShaderSource(shader, 1, (const char **) &source, NULL); + glCompileShader(shader); + + glGetShaderiv(shader, GL_COMPILE_STATUS, &status); + if (!status) { + char log[1000]; + GLsizei len; + glGetShaderInfoLog(shader, 1000, &len, log); + fprintf(stderr, "Error: compiling %s: %*s\n", + shader_type == GL_VERTEX_SHADER ? "vertex" : "fragment", + len, log); + exit(1); + } + + return shader; +} + +static void +init_gl(struct window *window) +{ + GLuint frag, vert; + GLuint program; + GLint status; + + frag = create_shader(window, frag_shader_text, GL_FRAGMENT_SHADER); + vert = create_shader(window, vert_shader_text, GL_VERTEX_SHADER); + + program = glCreateProgram(); + glAttachShader(program, frag); + glAttachShader(program, vert); + glLinkProgram(program); + + glGetProgramiv(program, GL_LINK_STATUS, &status); + if (!status) { + char log[1000]; + GLsizei len; + glGetProgramInfoLog(program, 1000, &len, log); + fprintf(stderr, "Error: linking:\n%*s\n", len, log); + exit(1); + } + + glUseProgram(program); + + window->gl.pos = 0; + window->gl.col = 1; + + glBindAttribLocation(program, window->gl.pos, "pos"); + glBindAttribLocation(program, window->gl.col, "color"); + glLinkProgram(program); + + window->gl.transform_uniform = + glGetUniformLocation(program, "transform"); +} + +static void +handle_ping(void *data, struct wl_shell_surface *shell_surface, + uint32_t serial) +{ + wl_shell_surface_pong(shell_surface, serial); +} + +static void +handle_configure(void *data, struct wl_shell_surface *shell_surface, + uint32_t edges, int32_t width, int32_t height) +{ + struct window *window = data; + int transform = WL_OUTPUT_TRANSFORM_NORMAL; + int32_t tmp; + + window->geometry.width = width; + window->geometry.height = height; + + if (!window->fullscreen) + window->window_size = window->geometry; + + if (window->output) + transform = window->output->transform; + + switch (transform) { + case WL_OUTPUT_TRANSFORM_90: + case WL_OUTPUT_TRANSFORM_270: + case WL_OUTPUT_TRANSFORM_FLIPPED_90: + case WL_OUTPUT_TRANSFORM_FLIPPED_270: + tmp = width; + width = height; + height = tmp; + break; + default: + break; + } + + if (window->native) + wl_egl_window_resize(window->native, width, height, 0, 0); +} + +static void +handle_popup_done(void *data, struct wl_shell_surface *shell_surface) +{ +} + +static const struct wl_shell_surface_listener shell_surface_listener = { + handle_ping, + handle_configure, + handle_popup_done +}; + +static void +toggle_fullscreen(struct window *window, int fullscreen); + +static void +surface_enter(void *data, struct wl_surface *wl_surface, + struct wl_output *wl_output) +{ + struct window *window = data; + struct output *output = NULL; + + wl_list_for_each(output, &window->display->output_list, link) { + if (output->output == wl_output) + break; + } + + if (output && output->output == wl_output) { + /* We use the output information only for rendering according + * to the output transform. Since we can't "please" two + * different outputs if they have a different transform, just + * do it according to the last output the surface entered. */ + window->output = output; + + /* Force a redraw with the new transform */ + toggle_fullscreen(window, window->fullscreen); + } +} + +static void +surface_leave(void *data, struct wl_surface *wl_surface, + struct wl_output *wl_output) +{ + struct window *window = data; + struct output *output = NULL; + + wl_list_for_each(output, &window->display->output_list, link) { + if (output->output == wl_output) + break; + } + + if (output && output->output == wl_output && output == window->output) + window->output = NULL; +} + +static const struct wl_surface_listener surface_listener = { + surface_enter, + surface_leave +}; + +static void +redraw(struct window *window); + +static void +configure_callback(void *data, struct wl_callback *callback, uint32_t time) +{ + struct window *window = data; + + wl_callback_destroy(callback); + + redraw(window); +} + +static struct wl_callback_listener configure_callback_listener = { + configure_callback, +}; + +static void +toggle_fullscreen(struct window *window, int fullscreen) +{ + struct wl_callback *callback; + + window->fullscreen = fullscreen; + + if (fullscreen) { + wl_shell_surface_set_fullscreen(window->shell_surface, + WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT, + 0, NULL); + } else { + wl_shell_surface_set_toplevel(window->shell_surface); + handle_configure(window, window->shell_surface, 0, + window->window_size.width, + window->window_size.height); + } + + callback = wl_display_sync(window->display->display); + wl_callback_add_listener(callback, &configure_callback_listener, + window); +} + +static void +create_surface(struct window *window) +{ + struct display *display = window->display; + EGLBoolean ret; + + window->surface = wl_compositor_create_surface(display->compositor); + window->shell_surface = wl_shell_get_shell_surface(display->shell, + window->surface); + + wl_surface_add_listener(window->surface, &surface_listener, window); + wl_shell_surface_add_listener(window->shell_surface, + &shell_surface_listener, window); + + window->native = + wl_egl_window_create(window->surface, + window->window_size.width, + window->window_size.height); + window->egl_surface = + eglCreateWindowSurface(display->egl.dpy, + display->egl.conf, + window->native, NULL); + + wl_shell_surface_set_title(window->shell_surface, "simple-egl"); + + ret = eglMakeCurrent(window->display->egl.dpy, window->egl_surface, + window->egl_surface, window->display->egl.ctx); + assert(ret == EGL_TRUE); + + toggle_fullscreen(window, window->fullscreen); +} + +static void +destroy_surface(struct window *window) +{ + wl_egl_window_destroy(window->native); + + wl_shell_surface_destroy(window->shell_surface); + wl_surface_destroy(window->surface); + + if (window->callback) + wl_callback_destroy(window->callback); +} + +static void +update_transform(struct window *window) +{ + int transform = WL_OUTPUT_TRANSFORM_NORMAL; + int swap_w_h = 0; + int flip; + + GLfloat mat[4][4] = { + { 1, 0, 0, 0 }, + { 0, 1, 0, 0 }, + { 0, 0, 1, 0 }, + { 0, 0, 0, 1 } + }; + + + if (window->output) + transform = window->output->transform; + + switch(transform) { + case WL_OUTPUT_TRANSFORM_FLIPPED: + case WL_OUTPUT_TRANSFORM_FLIPPED_90: + case WL_OUTPUT_TRANSFORM_FLIPPED_180: + case WL_OUTPUT_TRANSFORM_FLIPPED_270: + flip = -1; + break; + default: + flip = 1; + break; + } + + switch (transform) { + case WL_OUTPUT_TRANSFORM_NORMAL: + case WL_OUTPUT_TRANSFORM_FLIPPED: + mat[0][0] = flip; + mat[0][1] = 0; + mat[1][0] = 0; + mat[1][1] = 1; + break; + case WL_OUTPUT_TRANSFORM_90: + case WL_OUTPUT_TRANSFORM_FLIPPED_90: + mat[0][0] = 0; + mat[0][1] = -flip; + mat[1][0] = 1; + mat[1][1] = 0; + swap_w_h = 1; + break; + case WL_OUTPUT_TRANSFORM_180: + case WL_OUTPUT_TRANSFORM_FLIPPED_180: + mat[0][0] = -flip; + mat[0][1] = 0; + mat[1][0] = 0; + mat[1][1] = -1; + break; + case WL_OUTPUT_TRANSFORM_270: + case WL_OUTPUT_TRANSFORM_FLIPPED_270: + mat[0][0] = 0; + mat[0][1] = flip; + mat[1][0] = -1; + mat[1][1] = 0; + swap_w_h = 1; + break; + default: + break; + } + + if (swap_w_h) + glViewport(0, 0, window->geometry.height, + window->geometry.width); + else + glViewport(0, 0, window->geometry.width, + window->geometry.height); + + glUniformMatrix4fv(window->gl.transform_uniform, 1, GL_FALSE, + (GLfloat *) mat); + wl_surface_set_buffer_transform(window->surface, transform); + printf("Rendering buffer with transform == %d\n", transform); +} + +static void +redraw(struct window *window) +{ + static const GLfloat verts[8][2] = { + { 0.0, 0.0 }, + { 0.0, 1.0 }, + { 0.0, 0.0 }, + { 1.0, 0.0 }, + { 0.0, 0.0 }, + { -1.0, 0.0 }, + { 0.0, 0.0 }, + { 0.0, -1.0 } + }; + static const GLfloat colors[8][3] = { + { 1, 0, 0 }, + { 1, 0, 0 }, + { 0, 1, 0 }, + { 0, 1, 0 }, + { 1, 1, 1 }, + { 1, 1, 1 }, + { 1, 1, 1 }, + { 1, 1, 1 } + }; + struct wl_region *region; + + update_transform(window); + + glClearColor(0.0, 0.0, 0.0, 1.0); + glClear(GL_COLOR_BUFFER_BIT); + + glVertexAttribPointer(window->gl.pos, 2, GL_FLOAT, GL_FALSE, 0, verts); + glVertexAttribPointer(window->gl.col, 3, GL_FLOAT, GL_FALSE, 0, colors); + glEnableVertexAttribArray(window->gl.pos); + glEnableVertexAttribArray(window->gl.col); + + glDrawArrays(GL_LINES, 0, 8); + + glDisableVertexAttribArray(window->gl.pos); + glDisableVertexAttribArray(window->gl.col); + + region = wl_compositor_create_region(window->display->compositor); + wl_region_add(region, 0, 0, + window->geometry.width, + window->geometry.height); + wl_surface_set_opaque_region(window->surface, region); + wl_region_destroy(region); + + eglSwapBuffers(window->display->egl.dpy, window->egl_surface); +} + +static void +pointer_handle_enter(void *data, struct wl_pointer *pointer, + uint32_t serial, struct wl_surface *surface, + wl_fixed_t sx, wl_fixed_t sy) +{ + wl_pointer_set_cursor(pointer, serial, NULL, 0, 0); +} + +static void +pointer_handle_leave(void *data, struct wl_pointer *pointer, + uint32_t serial, struct wl_surface *surface) +{ +} + +static void +pointer_handle_motion(void *data, struct wl_pointer *pointer, + uint32_t time, wl_fixed_t sx, wl_fixed_t sy) +{ +} + +static void +pointer_handle_button(void *data, struct wl_pointer *wl_pointer, + uint32_t serial, uint32_t time, uint32_t button, + uint32_t state) +{ +} + +static void +pointer_handle_axis(void *data, struct wl_pointer *wl_pointer, + uint32_t time, uint32_t axis, wl_fixed_t value) +{ +} + +static const struct wl_pointer_listener pointer_listener = { + pointer_handle_enter, + pointer_handle_leave, + pointer_handle_motion, + pointer_handle_button, + pointer_handle_axis, +}; + +static void +keyboard_handle_keymap(void *data, struct wl_keyboard *keyboard, + uint32_t format, int fd, uint32_t size) +{ +} + +static void +keyboard_handle_enter(void *data, struct wl_keyboard *keyboard, + uint32_t serial, struct wl_surface *surface, + struct wl_array *keys) +{ +} + +static void +keyboard_handle_leave(void *data, struct wl_keyboard *keyboard, + uint32_t serial, struct wl_surface *surface) +{ +} + +static void +keyboard_handle_key(void *data, struct wl_keyboard *keyboard, + uint32_t serial, uint32_t time, uint32_t key, + uint32_t state) +{ + struct display *d = data; + + if (key == KEY_F11 && state) + toggle_fullscreen(d->window, d->window->fullscreen ^ 1); + else if (key == KEY_ESC && state) + running = 0; +} + +static void +keyboard_handle_modifiers(void *data, struct wl_keyboard *keyboard, + uint32_t serial, uint32_t mods_depressed, + uint32_t mods_latched, uint32_t mods_locked, + uint32_t group) +{ +} + +static const struct wl_keyboard_listener keyboard_listener = { + keyboard_handle_keymap, + keyboard_handle_enter, + keyboard_handle_leave, + keyboard_handle_key, + keyboard_handle_modifiers, +}; + +static void +seat_handle_capabilities(void *data, struct wl_seat *seat, + enum wl_seat_capability caps) +{ + struct display *d = data; + + if ((caps & WL_SEAT_CAPABILITY_POINTER) && !d->pointer) { + d->pointer = wl_seat_get_pointer(seat); + wl_pointer_add_listener(d->pointer, &pointer_listener, d); + } else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && d->pointer) { + wl_pointer_destroy(d->pointer); + d->pointer = NULL; + } + + if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !d->keyboard) { + d->keyboard = wl_seat_get_keyboard(seat); + wl_keyboard_add_listener(d->keyboard, &keyboard_listener, d); + } else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && d->keyboard) { + wl_keyboard_destroy(d->keyboard); + d->keyboard = NULL; + } +} + +static const struct wl_seat_listener seat_listener = { + seat_handle_capabilities, +}; + +static void +output_handle_geometry(void *data, struct wl_output *wl_output, int x, int y, + int physical_width, int physical_height, int subpixel, + const char *make, const char *model, int transform) +{ + struct output *output = data; + + output->transform = transform; +} + +static void +output_handle_mode(void *data, struct wl_output *output, uint32_t flags, + int width, int height, int refresh) +{ +} + +static const struct wl_output_listener output_listener = { + output_handle_geometry, + output_handle_mode +}; + +static void +registry_handle_global(void *data, struct wl_registry *registry, + uint32_t name, const char *interface, uint32_t version) +{ + struct display *d = data; + + if (strcmp(interface, "wl_compositor") == 0) { + d->compositor = + wl_registry_bind(registry, name, + &wl_compositor_interface, 1); + } else if (strcmp(interface, "wl_shell") == 0) { + d->shell = wl_registry_bind(registry, name, + &wl_shell_interface, 1); + } else if (strcmp(interface, "wl_seat") == 0) { + d->seat = wl_registry_bind(registry, name, + &wl_seat_interface, 1); + wl_seat_add_listener(d->seat, &seat_listener, d); + } else if (strcmp(interface, "wl_output") == 0) { + struct output *output = malloc(sizeof *output); + + if (!output) + return; + + output->output = wl_registry_bind(registry, name, + &wl_output_interface, 1); + wl_output_add_listener(output->output, &output_listener, + output); + wl_list_insert(&d->output_list, &output->link); + } +} + +static const struct wl_registry_listener registry_listener = { + registry_handle_global +}; + +static void +signal_int(int signum) +{ + running = 0; +} + +static void +usage(int error_code) +{ + fprintf(stderr, "Usage: simple-egl [OPTIONS]\n\n" + " -f\tRun in fullscreen mode\n" + " -h\tThis help text\n\n"); + + exit(error_code); +} + +int +main(int argc, char **argv) +{ + struct sigaction sigint; + struct display display = { 0 }; + struct window window = { 0 }; + int i, ret = 0; + + window.display = &display; + display.window = &window; + window.window_size.width = 500; + window.window_size.height = 250; + + wl_list_init(&display.output_list); + + for (i = 1; i < argc; i++) { + if (strcmp("-f", argv[i]) == 0) + window.fullscreen = 1; + else if (strcmp("-h", argv[i]) == 0) + usage(EXIT_SUCCESS); + else + usage(EXIT_FAILURE); + } + + display.display = wl_display_connect(NULL); + assert(display.display); + + display.registry = wl_display_get_registry(display.display); + wl_registry_add_listener(display.registry, + ®istry_listener, &display); + + wl_display_dispatch(display.display); + + init_egl(&display); + create_surface(&window); + init_gl(&window); + + sigint.sa_handler = signal_int; + sigemptyset(&sigint.sa_mask); + sigint.sa_flags = SA_RESETHAND; + sigaction(SIGINT, &sigint, NULL); + + while (running && ret != -1) + ret = wl_display_dispatch(display.display); + + fprintf(stderr, "simple-egl exiting\n"); + + destroy_surface(&window); + fini_egl(&display); + + if (display.shell) + wl_shell_destroy(display.shell); + + if (display.compositor) + wl_compositor_destroy(display.compositor); + + wl_display_flush(display.display); + wl_display_disconnect(display.display); + + return 0; +}