diff options
Diffstat (limited to 'clients/nested-client.c')
| -rw-r--r-- | clients/nested-client.c | 363 |
1 files changed, 363 insertions, 0 deletions
diff --git a/clients/nested-client.c b/clients/nested-client.c new file mode 100644 index 00000000..1161a992 --- /dev/null +++ b/clients/nested-client.c @@ -0,0 +1,363 @@ +/* + * Copyright © 2013 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 <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include <wayland-egl.h> +#include <wayland-cursor.h> + +#include <GLES2/gl2.h> +#include <EGL/egl.h> + +struct window; +struct seat; + +struct nested_client { + struct wl_display *display; + struct wl_registry *registry; + struct wl_compositor *compositor; + + EGLDisplay egl_display; + EGLContext egl_context; + EGLConfig egl_config; + EGLSurface egl_surface; + struct program *color_program; + + GLuint vert, frag, program; + GLuint rotation; + GLuint pos; + GLuint col; + + struct wl_surface *surface; + struct wl_egl_window *native; + int width, height; +}; + +#define POS 0 +#define COL 1 + +static GLuint +create_shader(const char *source, GLenum shader_type) +{ + GLuint shader; + GLint status; + + shader = glCreateShader(shader_type); + if (shader == 0) + return 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); + return 0; + } + + return shader; +} + +static void +create_program(struct nested_client *client, + const char *vert, const char *frag) +{ + GLint status; + + client->vert = create_shader(vert, GL_VERTEX_SHADER); + client->frag = create_shader(frag, GL_FRAGMENT_SHADER); + + client->program = glCreateProgram(); + glAttachShader(client->program, client->frag); + glAttachShader(client->program, client->vert); + glBindAttribLocation(client->program, POS, "pos"); + glBindAttribLocation(client->program, COL, "color"); + glLinkProgram(client->program); + + glGetProgramiv(client->program, GL_LINK_STATUS, &status); + if (!status) { + char log[1000]; + GLsizei len; + glGetProgramInfoLog(client->program, 1000, &len, log); + fprintf(stderr, "Error: linking:\n%*s\n", len, log); + exit(1); + } + + client->rotation = + glGetUniformLocation(client->program, "rotation"); +} + +static const char vertex_shader_text[] = + "uniform mat4 rotation;\n" + "attribute vec4 pos;\n" + "attribute vec4 color;\n" + "varying vec4 v_color;\n" + "void main() {\n" + " gl_Position = rotation * pos;\n" + " v_color = color;\n" + "}\n"; + +static const char color_fragment_shader_text[] = + "precision mediump float;\n" + "varying vec4 v_color;\n" + "void main() {\n" + " gl_FragColor = v_color;\n" + "}\n"; + +static void +render_triangle(struct nested_client *client, uint32_t time) +{ + static const GLfloat verts[3][2] = { + { -0.5, -0.5 }, + { 0.5, -0.5 }, + { 0, 0.5 } + }; + static const GLfloat colors[3][3] = { + { 1, 0, 0 }, + { 0, 1, 0 }, + { 0, 0, 1 } + }; + GLfloat angle; + GLfloat rotation[4][4] = { + { 1, 0, 0, 0 }, + { 0, 1, 0, 0 }, + { 0, 0, 1, 0 }, + { 0, 0, 0, 1 } + }; + static const int32_t speed_div = 5; + static uint32_t start_time = 0; + + if (client->program == 0) + create_program(client, vertex_shader_text, + color_fragment_shader_text); + + if (start_time == 0) + start_time = time; + + angle = ((time - start_time) / speed_div) % 360 * M_PI / 180.0; + rotation[0][0] = cos(angle); + rotation[0][2] = sin(angle); + rotation[2][0] = -sin(angle); + rotation[2][2] = cos(angle); + + glClearColor(0.4, 0.4, 0.4, 1.0); + glClear(GL_COLOR_BUFFER_BIT); + + glUseProgram(client->program); + + glViewport(0, 0, client->width, client->height); + + glUniformMatrix4fv(client->rotation, 1, GL_FALSE, + (GLfloat *) rotation); + + glVertexAttribPointer(POS, 2, GL_FLOAT, GL_FALSE, 0, verts); + glVertexAttribPointer(COL, 3, GL_FLOAT, GL_FALSE, 0, colors); + glEnableVertexAttribArray(POS); + glEnableVertexAttribArray(COL); + + glDrawArrays(GL_TRIANGLES, 0, 3); + + glDisableVertexAttribArray(POS); + glDisableVertexAttribArray(COL); + + glFlush(); +} + +static void +frame_callback(void *data, struct wl_callback *callback, uint32_t time); + +static const struct wl_callback_listener frame_listener = { + frame_callback +}; + +static void +frame_callback(void *data, struct wl_callback *callback, uint32_t time) +{ + struct nested_client *client = data; + + if (callback) + wl_callback_destroy(callback); + + callback = wl_surface_frame(client->surface); + wl_callback_add_listener(callback, &frame_listener, client); + + render_triangle(client, time); + + eglSwapBuffers(client->egl_display, client->egl_surface); +} + +static void +registry_handle_global(void *data, struct wl_registry *registry, + uint32_t name, const char *interface, uint32_t version) +{ + struct nested_client *client = data; + + if (strcmp(interface, "wl_compositor") == 0) { + client->compositor = + wl_registry_bind(registry, name, + &wl_compositor_interface, 1); + } +} + +static void +registry_handle_global_remove(void *data, struct wl_registry *registry, + uint32_t name) +{ +} + +static const struct wl_registry_listener registry_listener = { + registry_handle_global, + registry_handle_global_remove +}; + +static struct nested_client * +nested_client_create(void) +{ + static const EGLint context_attribs[] = { + EGL_CONTEXT_CLIENT_VERSION, 2, + EGL_NONE + }; + + static const EGLint config_attribs[] = { + EGL_SURFACE_TYPE, EGL_WINDOW_BIT, + EGL_RED_SIZE, 1, + EGL_GREEN_SIZE, 1, + EGL_BLUE_SIZE, 1, + EGL_ALPHA_SIZE, 1, + EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, + EGL_NONE + }; + + EGLint major, minor, n; + EGLBoolean ret; + + struct nested_client *client; + + client = malloc(sizeof *client); + if (client == NULL) + return NULL; + + client->width = 250; + client->height = 250; + + client->display = wl_display_connect(NULL); + + client->registry = wl_display_get_registry(client->display); + wl_registry_add_listener(client->registry, + ®istry_listener, client); + + /* get globals */ + wl_display_roundtrip(client->display); + + client->egl_display = eglGetDisplay(client->display); + if (client->egl_display == NULL) + return NULL; + + ret = eglInitialize(client->egl_display, &major, &minor); + if (!ret) + return NULL; + ret = eglBindAPI(EGL_OPENGL_ES_API); + if (!ret) + return NULL; + + ret = eglChooseConfig(client->egl_display, config_attribs, + &client->egl_config, 1, &n); + if (!ret || n != 1) + return NULL; + + client->egl_context = eglCreateContext(client->egl_display, + client->egl_config, + EGL_NO_CONTEXT, + context_attribs); + if (!client->egl_context) + return NULL; + + client->surface = wl_compositor_create_surface(client->compositor); + + client->native = wl_egl_window_create(client->surface, + client->width, client->height); + + client->egl_surface = + eglCreateWindowSurface(client->egl_display, + client->egl_config, + client->native, NULL); + + eglMakeCurrent(client->egl_display, client->egl_surface, + client->egl_surface, client->egl_context); + + wl_egl_window_resize(client->native, + client->width, client->height, 0, 0); + + frame_callback(client, NULL, 0); + + return client; +} + +static void +nested_client_destroy(struct nested_client *client) +{ + eglMakeCurrent(client->egl_display, + EGL_NO_SURFACE, EGL_NO_SURFACE, + EGL_NO_CONTEXT); + + wl_egl_window_destroy(client->native); + + wl_surface_destroy(client->surface); + + if (client->compositor) + wl_compositor_destroy(client->compositor); + + wl_registry_destroy(client->registry); + wl_display_flush(client->display); + wl_display_disconnect(client->display); +} + +int +main(int argc, char **argv) +{ + struct nested_client *client; + int ret = 0; + + if (getenv("WAYLAND_SOCKET") == NULL) { + fprintf(stderr, + "must be run by nested, don't run standalone\n"); + return EXIT_FAILURE; + } + + client = nested_client_create(); + if (client == NULL) + return EXIT_FAILURE; + + while (ret != -1) + ret = wl_display_dispatch(client->display); + + nested_client_destroy(client); + + return 0; +} |