mirror of
https://gitlab.freedesktop.org/wayland/weston
synced 2024-09-06 18:05:39 +00:00
![Emil Velikov](/assets/img/avatar_default.png)
Signed-off-by: Emil Velikov <emil.velikov@collabora.com> Reviewed-by: Daniel Stone <daniels@collabora.com>
373 lines
8.8 KiB
C
373 lines
8.8 KiB
C
/*
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* Copyright © 2013 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include "config.h"
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#include <stdint.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 <wayland-egl.h>
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#include <wayland-cursor.h>
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#include <GLES2/gl2.h>
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#include <EGL/egl.h>
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#include "../shared/platform.h"
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struct window;
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struct seat;
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struct nested_client {
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struct wl_display *display;
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struct wl_registry *registry;
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struct wl_compositor *compositor;
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EGLDisplay egl_display;
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EGLContext egl_context;
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EGLConfig egl_config;
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EGLSurface egl_surface;
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struct program *color_program;
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GLuint vert, frag, program;
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GLuint rotation;
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GLuint pos;
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GLuint col;
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struct wl_surface *surface;
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struct wl_egl_window *native;
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int width, height;
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};
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#define POS 0
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#define COL 1
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static GLuint
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create_shader(const char *source, GLenum shader_type)
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{
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GLuint shader;
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GLint status;
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shader = glCreateShader(shader_type);
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if (shader == 0)
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return 0;
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glShaderSource(shader, 1, (const char **) &source, NULL);
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glCompileShader(shader);
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glGetShaderiv(shader, GL_COMPILE_STATUS, &status);
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if (!status) {
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char log[1000];
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GLsizei len;
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glGetShaderInfoLog(shader, 1000, &len, log);
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fprintf(stderr, "Error: compiling %s: %*s\n",
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shader_type == GL_VERTEX_SHADER ? "vertex" : "fragment",
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len, log);
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return 0;
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}
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return shader;
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}
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static void
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create_program(struct nested_client *client,
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const char *vert, const char *frag)
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{
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GLint status;
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client->vert = create_shader(vert, GL_VERTEX_SHADER);
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client->frag = create_shader(frag, GL_FRAGMENT_SHADER);
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client->program = glCreateProgram();
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glAttachShader(client->program, client->frag);
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glAttachShader(client->program, client->vert);
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glBindAttribLocation(client->program, POS, "pos");
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glBindAttribLocation(client->program, COL, "color");
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glLinkProgram(client->program);
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glGetProgramiv(client->program, GL_LINK_STATUS, &status);
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if (!status) {
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char log[1000];
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GLsizei len;
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glGetProgramInfoLog(client->program, 1000, &len, log);
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fprintf(stderr, "Error: linking:\n%*s\n", len, log);
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exit(1);
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}
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client->rotation =
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glGetUniformLocation(client->program, "rotation");
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}
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static const char vertex_shader_text[] =
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"uniform mat4 rotation;\n"
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"attribute vec4 pos;\n"
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"attribute vec4 color;\n"
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"varying vec4 v_color;\n"
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"void main() {\n"
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" gl_Position = rotation * pos;\n"
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" v_color = color;\n"
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"}\n";
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static const char color_fragment_shader_text[] =
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"precision mediump float;\n"
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"varying vec4 v_color;\n"
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"void main() {\n"
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" gl_FragColor = v_color;\n"
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"}\n";
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static void
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render_triangle(struct nested_client *client, uint32_t time)
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{
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static const GLfloat verts[3][2] = {
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{ -0.5, -0.5 },
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{ 0.5, -0.5 },
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{ 0, 0.5 }
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};
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static const GLfloat colors[3][3] = {
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{ 1, 0, 0 },
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{ 0, 1, 0 },
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{ 0, 0, 1 }
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};
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GLfloat angle;
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GLfloat rotation[4][4] = {
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{ 1, 0, 0, 0 },
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{ 0, 1, 0, 0 },
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{ 0, 0, 1, 0 },
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{ 0, 0, 0, 1 }
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};
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static const int32_t speed_div = 5;
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static uint32_t start_time = 0;
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if (client->program == 0)
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create_program(client, vertex_shader_text,
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color_fragment_shader_text);
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if (start_time == 0)
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start_time = time;
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angle = ((time - start_time) / speed_div) % 360 * M_PI / 180.0;
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rotation[0][0] = cos(angle);
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rotation[0][2] = sin(angle);
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rotation[2][0] = -sin(angle);
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rotation[2][2] = cos(angle);
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glClearColor(0.4, 0.4, 0.4, 1.0);
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glClear(GL_COLOR_BUFFER_BIT);
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glUseProgram(client->program);
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glViewport(0, 0, client->width, client->height);
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glUniformMatrix4fv(client->rotation, 1, GL_FALSE,
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(GLfloat *) rotation);
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glVertexAttribPointer(POS, 2, GL_FLOAT, GL_FALSE, 0, verts);
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glVertexAttribPointer(COL, 3, GL_FLOAT, GL_FALSE, 0, colors);
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glEnableVertexAttribArray(POS);
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glEnableVertexAttribArray(COL);
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glDrawArrays(GL_TRIANGLES, 0, 3);
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glDisableVertexAttribArray(POS);
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glDisableVertexAttribArray(COL);
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glFlush();
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}
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static void
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frame_callback(void *data, struct wl_callback *callback, uint32_t time);
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static const struct wl_callback_listener frame_listener = {
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frame_callback
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};
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static void
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frame_callback(void *data, struct wl_callback *callback, uint32_t time)
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{
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struct nested_client *client = data;
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if (callback)
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wl_callback_destroy(callback);
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callback = wl_surface_frame(client->surface);
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wl_callback_add_listener(callback, &frame_listener, client);
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render_triangle(client, time);
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eglSwapBuffers(client->egl_display, client->egl_surface);
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}
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static void
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registry_handle_global(void *data, struct wl_registry *registry,
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uint32_t name, const char *interface, uint32_t version)
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{
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struct nested_client *client = data;
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if (strcmp(interface, "wl_compositor") == 0) {
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client->compositor =
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wl_registry_bind(registry, name,
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&wl_compositor_interface, 1);
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}
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}
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static void
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registry_handle_global_remove(void *data, struct wl_registry *registry,
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uint32_t name)
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{
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}
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static const struct wl_registry_listener registry_listener = {
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registry_handle_global,
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registry_handle_global_remove
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};
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static struct nested_client *
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nested_client_create(void)
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{
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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, 1,
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EGL_GREEN_SIZE, 1,
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EGL_BLUE_SIZE, 1,
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EGL_ALPHA_SIZE, 1,
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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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EGLint major, minor, n;
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EGLBoolean ret;
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struct nested_client *client;
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client = malloc(sizeof *client);
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if (client == NULL)
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return NULL;
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client->width = 250;
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client->height = 250;
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client->display = wl_display_connect(NULL);
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client->registry = wl_display_get_registry(client->display);
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wl_registry_add_listener(client->registry,
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®istry_listener, client);
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/* get globals */
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wl_display_roundtrip(client->display);
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client->egl_display =
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weston_platform_get_egl_display(EGL_PLATFORM_WAYLAND_KHR,
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client->display, NULL);
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if (client->egl_display == NULL)
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return NULL;
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ret = eglInitialize(client->egl_display, &major, &minor);
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if (!ret)
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return NULL;
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ret = eglBindAPI(EGL_OPENGL_ES_API);
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if (!ret)
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return NULL;
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ret = eglChooseConfig(client->egl_display, config_attribs,
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&client->egl_config, 1, &n);
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if (!ret || n != 1)
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return NULL;
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client->egl_context = eglCreateContext(client->egl_display,
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client->egl_config,
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EGL_NO_CONTEXT,
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context_attribs);
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if (!client->egl_context)
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return NULL;
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client->surface = wl_compositor_create_surface(client->compositor);
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client->native = wl_egl_window_create(client->surface,
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client->width, client->height);
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client->egl_surface = weston_platform_create_egl_surface(client->egl_display,
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client->egl_config,
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client->native, NULL);
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eglMakeCurrent(client->egl_display, client->egl_surface,
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client->egl_surface, client->egl_context);
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wl_egl_window_resize(client->native,
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client->width, client->height, 0, 0);
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frame_callback(client, NULL, 0);
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return client;
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}
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static void
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nested_client_destroy(struct nested_client *client)
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{
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eglMakeCurrent(client->egl_display,
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EGL_NO_SURFACE, EGL_NO_SURFACE,
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EGL_NO_CONTEXT);
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weston_platform_destroy_egl_surface(client->egl_display,
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client->egl_surface);
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wl_egl_window_destroy(client->native);
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wl_surface_destroy(client->surface);
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if (client->compositor)
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wl_compositor_destroy(client->compositor);
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wl_registry_destroy(client->registry);
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wl_display_flush(client->display);
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wl_display_disconnect(client->display);
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}
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int
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main(int argc, char **argv)
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{
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struct nested_client *client;
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int ret = 0;
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if (getenv("WAYLAND_SOCKET") == NULL) {
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fprintf(stderr,
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"must be run by nested, don't run standalone\n");
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return EXIT_FAILURE;
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}
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client = nested_client_create();
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if (client == NULL)
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return EXIT_FAILURE;
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while (ret != -1)
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ret = wl_display_dispatch(client->display);
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nested_client_destroy(client);
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return 0;
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}
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