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weston/compositor.c

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/*
* Copyright © 2008 Kristian Høgsberg
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdarg.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <unistd.h>
#include <cairo.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <math.h>
#include <time.h>
#include <linux/input.h>
#define GL_GLEXT_PROTOTYPES
#define EGL_EGLEXT_PROTOTYPES
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include "wayland.h"
#include "wayland-protocol.h"
#include "cairo-util.h"
#include "compositor.h"
const char *option_background = "background.jpg";
int option_connector = 0;
static const GOptionEntry option_entries[] = {
{ "background", 'b', 0, G_OPTION_ARG_STRING,
&option_background, "Background image" },
{ "connector", 'c', 0, G_OPTION_ARG_INT,
&option_connector, "KMS connector" },
{ NULL }
};
static void
wlsc_matrix_init(struct wlsc_matrix *matrix)
{
static const struct wlsc_matrix identity = {
{ 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1 }
};
memcpy(matrix, &identity, sizeof identity);
}
static void
wlsc_matrix_multiply(struct wlsc_matrix *m, const struct wlsc_matrix *n)
{
struct wlsc_matrix tmp;
const GLfloat *row, *column;
div_t d;
int i, j;
for (i = 0; i < 16; i++) {
tmp.d[i] = 0;
d = div(i, 4);
row = m->d + d.quot * 4;
column = n->d + d.rem;
for (j = 0; j < 4; j++)
tmp.d[i] += row[j] * column[j * 4];
}
memcpy(m, &tmp, sizeof tmp);
}
static void
wlsc_matrix_translate(struct wlsc_matrix *matrix, GLfloat x, GLfloat y, GLfloat z)
{
struct wlsc_matrix translate = {
{ 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, x, y, z, 1 }
};
wlsc_matrix_multiply(matrix, &translate);
}
static void
wlsc_matrix_scale(struct wlsc_matrix *matrix, GLfloat x, GLfloat y, GLfloat z)
{
struct wlsc_matrix scale = {
{ x, 0, 0, 0, 0, y, 0, 0, 0, 0, z, 0, 0, 0, 0, 1 }
};
wlsc_matrix_multiply(matrix, &scale);
}
static void
wlsc_matrix_rotate(struct wlsc_matrix *matrix,
GLfloat angle, GLfloat x, GLfloat y, GLfloat z)
{
GLfloat c = cos(angle);
GLfloat s = sin(angle);
struct wlsc_matrix rotate = {
{ x * x * (1 - c) + c, y * x * (1 - c) + z * s, x * z * (1 - c) - y * s, 0,
x * y * (1 - c) - z * s, y * y * (1 - c) + c, y * z * (1 - c) + x * s, 0,
x * z * (1 - c) + y * s, y * z * (1 - c) - x * s, z * z * (1 - c) + c, 0,
0, 0, 0, 1 }
};
wlsc_matrix_multiply(matrix, &rotate);
}
static void
wlsc_matrix_transform(struct wlsc_matrix *matrix, struct wlsc_vector *v)
{
int i, j;
struct wlsc_vector t;
for (i = 0; i < 4; i++) {
t.f[i] = 0;
for (j = 0; j < 4; j++)
t.f[i] += v->f[j] * matrix->d[i + j * 4];
}
*v = t;
}
static void
wlsc_surface_init(struct wlsc_surface *surface,
struct wlsc_compositor *compositor, struct wl_visual *visual,
int32_t x, int32_t y, int32_t width, int32_t height)
{
glGenTextures(1, &surface->texture);
surface->compositor = compositor;
surface->visual = visual;
wlsc_matrix_init(&surface->matrix);
wlsc_matrix_scale(&surface->matrix, width, height, 1);
wlsc_matrix_translate(&surface->matrix, x, y, 0);
wlsc_matrix_init(&surface->matrix_inv);
wlsc_matrix_translate(&surface->matrix_inv, -x, -y, 0);
wlsc_matrix_scale(&surface->matrix_inv, 1.0 / width, 1.0 / height, 1);
}
static struct wlsc_surface *
wlsc_surface_create_from_cairo_surface(struct wlsc_compositor *ec,
cairo_surface_t *surface,
int x, int y, int width, int height)
{
struct wlsc_surface *es;
int stride;
void *data;
stride = cairo_image_surface_get_stride(surface);
data = cairo_image_surface_get_data(surface);
es = malloc(sizeof *es);
if (es == NULL)
return NULL;
wlsc_surface_init(es, ec, &ec->premultiplied_argb_visual,
x, y, width, height);
glBindTexture(GL_TEXTURE_2D, es->texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0,
GL_RGBA, GL_UNSIGNED_BYTE, data);
return es;
}
static void
wlsc_surface_destroy(struct wlsc_surface *surface,
struct wlsc_compositor *compositor)
{
struct wlsc_listener *l;
wl_list_remove(&surface->link);
glDeleteTextures(1, &surface->texture);
wl_client_remove_surface(surface->base.client, &surface->base);
wl_list_for_each(l, &compositor->surface_destroy_listener_list, link)
l->func(l, surface);
free(surface);
}
static void
pointer_path(cairo_t *cr, int x, int y)
{
const int end = 3, tx = 4, ty = 12, dx = 5, dy = 10;
const int width = 16, height = 16;
cairo_move_to(cr, x, y);
cairo_line_to(cr, x + tx, y + ty);
cairo_line_to(cr, x + dx, y + dy);
cairo_line_to(cr, x + width - end, y + height);
cairo_line_to(cr, x + width, y + height - end);
cairo_line_to(cr, x + dy, y + dx);
cairo_line_to(cr, x + ty, y + tx);
cairo_close_path(cr);
}
static struct wlsc_surface *
pointer_create(struct wlsc_compositor *ec, int x, int y, int width, int height)
{
struct wlsc_surface *es;
const int hotspot_x = 16, hotspot_y = 16;
cairo_surface_t *surface;
cairo_t *cr;
surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
width, height);
cr = cairo_create(surface);
pointer_path(cr, hotspot_x + 5, hotspot_y + 4);
cairo_set_line_width(cr, 2);
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_stroke_preserve(cr);
cairo_fill(cr);
blur_surface(surface, width);
pointer_path(cr, hotspot_x, hotspot_y);
cairo_stroke_preserve(cr);
cairo_set_source_rgb(cr, 1, 1, 1);
cairo_fill(cr);
cairo_destroy(cr);
es = wlsc_surface_create_from_cairo_surface(ec,
surface,
x - hotspot_x,
y - hotspot_y,
width, height);
cairo_surface_destroy(surface);
return es;
}
static struct wlsc_surface *
background_create(struct wlsc_output *output, const char *filename)
{
struct wlsc_surface *background;
GdkPixbuf *pixbuf;
GError *error = NULL;
void *data;
GLenum format;
background = malloc(sizeof *background);
if (background == NULL)
return NULL;
g_type_init();
pixbuf = gdk_pixbuf_new_from_file_at_scale(filename,
output->width,
output->height,
FALSE, &error);
if (error != NULL) {
free(background);
return NULL;
}
data = gdk_pixbuf_get_pixels(pixbuf);
wlsc_surface_init(background, output->compositor,
&output->compositor->rgb_visual,
output->x, output->y, output->width, output->height);
glBindTexture(GL_TEXTURE_2D, background->texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
if (gdk_pixbuf_get_has_alpha(pixbuf))
format = GL_RGBA;
else
format = GL_RGB;
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB,
output->width, output->height, 0,
format, GL_UNSIGNED_BYTE, data);
return background;
}
static void
wlsc_surface_draw(struct wlsc_surface *es, struct wlsc_output *output)
{
struct wlsc_compositor *ec = es->compositor;
struct wlsc_matrix tmp;
tmp = es->matrix;
wlsc_matrix_multiply(&tmp, &output->matrix);
glUniformMatrix4fv(ec->proj_uniform, 1, GL_FALSE, tmp.d);
glUniform1i(ec->tex_uniform, 0);
if (es->visual == &ec->argb_visual) {
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
} else if (es->visual == &ec->premultiplied_argb_visual) {
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
} else {
glDisable(GL_BLEND);
}
glBindTexture(GL_TEXTURE_2D, es->texture);
glEnable(GL_TEXTURE_2D);
glBindBuffer(GL_ARRAY_BUFFER, ec->vbo);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE,
5 * sizeof(GLfloat), NULL);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE,
5 * sizeof(GLfloat), (GLfloat *) 0 + 3);
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
}
static void
wlsc_surface_raise(struct wlsc_surface *surface)
{
struct wlsc_compositor *compositor = surface->compositor;
wl_list_remove(&surface->link);
wl_list_insert(compositor->surface_list.prev, &surface->link);
}
static void
wlsc_surface_lower(struct wlsc_surface *surface)
{
struct wlsc_compositor *compositor = surface->compositor;
wl_list_remove(&surface->link);
wl_list_insert(&compositor->surface_list, &surface->link);
}
void
wlsc_compositor_finish_frame(struct wlsc_compositor *compositor, int msecs)
{
wl_display_post_frame(compositor->wl_display,
&compositor->base,
compositor->current_frame, msecs);
wl_event_source_timer_update(compositor->timer_source, 5);
compositor->current_frame++;
}
static void
wlsc_output_repaint(struct wlsc_output *output)
{
struct wlsc_compositor *ec = output->compositor;
struct wlsc_surface *es;
struct wlsc_input_device *eid;
glViewport(0, 0, output->width, output->height);
if (output->background)
wlsc_surface_draw(output->background, output);
else
glClear(GL_COLOR_BUFFER_BIT);
wl_list_for_each(es, &ec->surface_list, link)
wlsc_surface_draw(es, output);
wl_list_for_each(eid, &ec->input_device_list, link)
wlsc_surface_draw(eid->sprite, output);
}
static void
repaint(void *data)
{
struct wlsc_compositor *ec = data;
struct wlsc_output *output;
if (!ec->repaint_needed) {
ec->repaint_on_timeout = 0;
return;
}
wl_list_for_each(output, &ec->output_list, link)
wlsc_output_repaint(output);
ec->present(ec);
ec->repaint_needed = 0;
}
static void
wlsc_compositor_schedule_repaint(struct wlsc_compositor *compositor)
{
compositor->repaint_needed = 1;
if (compositor->repaint_on_timeout)
return;
wl_event_source_timer_update(compositor->timer_source, 1);
compositor->repaint_on_timeout = 1;
}
static void
surface_destroy(struct wl_client *client,
struct wl_surface *surface)
{
struct wlsc_surface *es = (struct wlsc_surface *) surface;
struct wlsc_compositor *ec = es->compositor;
wlsc_surface_destroy(es, ec);
wlsc_compositor_schedule_repaint(ec);
}
static void
surface_attach(struct wl_client *client,
struct wl_surface *surface, uint32_t name,
uint32_t width, uint32_t height, uint32_t stride,
struct wl_object *visual)
{
struct wlsc_surface *es = (struct wlsc_surface *) surface;
struct wlsc_compositor *ec = es->compositor;
EGLint attribs[] = {
EGL_WIDTH, 0,
EGL_HEIGHT, 0,
EGL_IMAGE_STRIDE_MESA, 0,
EGL_IMAGE_FORMAT_MESA, EGL_IMAGE_FORMAT_ARGB8888_MESA,
EGL_NONE
};
es->width = width;
es->height = height;
if (visual == &ec->argb_visual.base)
es->visual = &ec->argb_visual;
else if (visual == &ec->premultiplied_argb_visual.base)
es->visual = &ec->premultiplied_argb_visual;
else if (visual == &ec->rgb_visual.base)
es->visual = &ec->rgb_visual;
else
/* FIXME: Smack client with an exception event */;
glBindTexture(GL_TEXTURE_2D, es->texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
if (es->image)
eglDestroyImageKHR(ec->display, es->image);
attribs[1] = width;
attribs[3] = height;
attribs[5] = stride / 4;
es->image = eglCreateImageKHR(ec->display, ec->context,
EGL_DRM_IMAGE_MESA,
(EGLClientBuffer) name, attribs);
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, es->image);
}
static void
surface_map(struct wl_client *client,
struct wl_surface *surface,
int32_t x, int32_t y, int32_t width, int32_t height)
{
struct wlsc_surface *es = (struct wlsc_surface *) surface;
wlsc_matrix_init(&es->matrix);
wlsc_matrix_scale(&es->matrix, width, height, 1);
wlsc_matrix_translate(&es->matrix, x, y, 0);
wlsc_matrix_init(&es->matrix_inv);
wlsc_matrix_translate(&es->matrix_inv, -x, -y, 0);
wlsc_matrix_scale(&es->matrix_inv, 1.0 / width, 1.0 / height, 1);
}
static void
surface_damage(struct wl_client *client,
struct wl_surface *surface,
int32_t x, int32_t y, int32_t width, int32_t height)
{
/* FIXME: This need to take a damage region, of course. */
}
const static struct wl_surface_interface surface_interface = {
surface_destroy,
surface_attach,
surface_map,
surface_damage
};
static void
compositor_create_surface(struct wl_client *client,
struct wl_compositor *compositor, uint32_t id)
{
struct wlsc_compositor *ec = (struct wlsc_compositor *) compositor;
struct wlsc_surface *surface;
surface = malloc(sizeof *surface);
if (surface == NULL)
/* FIXME: Send OOM event. */
return;
wlsc_surface_init(surface, ec, NULL, 0, 0, 0, 0);
wl_list_insert(ec->surface_list.prev, &surface->link);
wl_client_add_surface(client, &surface->base,
&surface_interface, id);
}
static void
compositor_commit(struct wl_client *client,
struct wl_compositor *compositor, uint32_t key)
{
struct wlsc_compositor *ec = (struct wlsc_compositor *) compositor;
wlsc_compositor_schedule_repaint(ec);
wl_client_send_acknowledge(client, compositor, key, ec->current_frame);
}
const static struct wl_compositor_interface compositor_interface = {
compositor_create_surface,
compositor_commit
};
static void
wlsc_surface_transform(struct wlsc_surface *surface,
int32_t x, int32_t y, int32_t *sx, int32_t *sy)
{
struct wlsc_vector v = { { x, y, 0, 1 } };
wlsc_matrix_transform(&surface->matrix_inv, &v);
*sx = v.f[0] * surface->width;
*sy = v.f[1] * surface->height;
}
static void
wlsc_input_device_set_keyboard_focus(struct wlsc_input_device *device,
struct wlsc_surface *surface)
{
if (device->keyboard_focus == surface)
return;
if (device->keyboard_focus &&
(!surface || device->keyboard_focus->base.client != surface->base.client))
wl_surface_post_event(&device->keyboard_focus->base,
&device->base,
WL_INPUT_KEYBOARD_FOCUS, NULL, &device->keys);
if (surface)
wl_surface_post_event(&surface->base,
&device->base,
WL_INPUT_KEYBOARD_FOCUS,
&surface->base, &device->keys);
device->keyboard_focus = surface;
}
static void
wlsc_input_device_set_pointer_focus(struct wlsc_input_device *device,
struct wlsc_surface *surface)
{
if (device->pointer_focus == surface)
return;
if (device->pointer_focus &&
(!surface || device->pointer_focus->base.client != surface->base.client))
wl_surface_post_event(&device->pointer_focus->base,
&device->base,
WL_INPUT_POINTER_FOCUS, NULL);
if (surface)
wl_surface_post_event(&surface->base,
&device->base,
WL_INPUT_POINTER_FOCUS, &surface->base);
device->pointer_focus = surface;
}
static struct wlsc_surface *
pick_surface(struct wlsc_input_device *device, int32_t *sx, int32_t *sy)
{
struct wlsc_compositor *ec = device->ec;
struct wlsc_surface *es;
if (device->grab > 0) {
wlsc_surface_transform(device->grab_surface,
device->x, device->y, sx, sy);
return device->grab_surface;
}
wl_list_for_each(es, &ec->surface_list, link) {
wlsc_surface_transform(es, device->x, device->y, sx, sy);
if (0 <= *sx && *sx < es->width &&
0 <= *sy && *sy < es->height)
return es;
}
return NULL;
}
void
notify_motion(struct wlsc_input_device *device, int x, int y)
{
struct wlsc_surface *es;
struct wlsc_compositor *ec = device->ec;
struct wlsc_output *output;
const int hotspot_x = 16, hotspot_y = 16;
int32_t sx, sy;
/* FIXME: We need some multi head love here. */
output = container_of(ec->output_list.next, struct wlsc_output, link);
if (x < output->x)
x = 0;
if (y < output->y)
y = 0;
if (x >= output->x + output->width)
x = output->x + output->width - 1;
if (y >= output->y + output->height)
y = output->y + output->height - 1;
device->x = x;
device->y = y;
es = pick_surface(device, &sx, &sy);
wlsc_input_device_set_pointer_focus(device, es);
if (es)
wl_surface_post_event(&es->base, &device->base,
WL_INPUT_MOTION, x, y, sx, sy);
wlsc_matrix_init(&device->sprite->matrix);
wlsc_matrix_scale(&device->sprite->matrix, 64, 64, 1);
wlsc_matrix_translate(&device->sprite->matrix,
x - hotspot_x, y - hotspot_y, 0);
wlsc_compositor_schedule_repaint(device->ec);
}
void
notify_button(struct wlsc_input_device *device,
int32_t button, int32_t state)
{
struct wlsc_surface *surface;
struct wlsc_compositor *compositor = device->ec;
int32_t sx, sy;
surface = pick_surface(device, &sx, &sy);
if (surface) {
if (state) {
wlsc_surface_raise(surface);
device->grab++;
device->grab_surface = surface;
wlsc_input_device_set_keyboard_focus(device,
surface);
} else {
device->grab--;
}
/* FIXME: Swallow click on raise? */
wl_surface_post_event(&surface->base, &device->base,
WL_INPUT_BUTTON, button, state,
device->x, device->y, sx, sy);
wlsc_compositor_schedule_repaint(compositor);
}
}
void
notify_key(struct wlsc_input_device *device,
uint32_t key, uint32_t state)
{
struct wlsc_compositor *compositor = device->ec;
uint32_t *k, *end;
uint32_t modifier;
switch (key | compositor->modifier_state) {
case KEY_BACKSPACE | MODIFIER_CTRL | MODIFIER_ALT:
kill(0, SIGTERM);
return;
}
switch (key) {
case KEY_LEFTCTRL:
case KEY_RIGHTCTRL:
modifier = MODIFIER_CTRL;
break;
case KEY_LEFTALT:
case KEY_RIGHTALT:
modifier = MODIFIER_ALT;
break;
default:
modifier = 0;
break;
}
if (state)
compositor->modifier_state |= modifier;
else
compositor->modifier_state &= ~modifier;
end = device->keys.data + device->keys.size;
for (k = device->keys.data; k < end; k++) {
if (*k == key)
*k = *--end;
}
device->keys.size = (void *) end - device->keys.data;
if (state) {
k = wl_array_add(&device->keys, sizeof *k);
*k = key;
}
if (device->keyboard_focus != NULL)
wl_surface_post_event(&device->keyboard_focus->base,
&device->base,
WL_INPUT_KEY, key, state);
}
static void
handle_surface_destroy(struct wlsc_listener *listener,
struct wlsc_surface *surface)
{
struct wlsc_input_device *device =
container_of(listener, struct wlsc_input_device, listener);
struct wlsc_surface *focus;
int32_t sx, sy;
if (device->grab_surface == surface) {
device->grab_surface = NULL;
device->grab = 0;
}
if (device->keyboard_focus == surface)
wlsc_input_device_set_keyboard_focus(device, NULL);
if (device->pointer_focus == surface) {
focus = pick_surface(device, &sx, &sy);
wlsc_input_device_set_pointer_focus(device, focus);
fprintf(stderr, "lost pointer focus surface, reverting to %p\n", focus);
}
}
void
wlsc_input_device_init(struct wlsc_input_device *device,
struct wlsc_compositor *ec)
{
device->base.interface = &wl_input_device_interface;
device->base.implementation = NULL;
wl_display_add_object(ec->wl_display, &device->base);
wl_display_add_global(ec->wl_display, &device->base, NULL);
device->x = 100;
device->y = 100;
device->ec = ec;
device->sprite = pointer_create(ec, device->x, device->y, 64, 64);
device->listener.func = handle_surface_destroy;
wl_list_insert(ec->surface_destroy_listener_list.prev,
&device->listener.link);
wl_list_insert(ec->input_device_list.prev, &device->link);
}
static void
wlsc_output_post_geometry(struct wl_client *client, struct wl_object *global)
{
struct wlsc_output *output =
container_of(global, struct wlsc_output, base);
wl_client_post_event(client, global,
WL_OUTPUT_GEOMETRY,
output->width, output->height);
}
static const char vertex_shader[] =
"uniform mat4 proj;\n"
"attribute vec4 position;\n"
"attribute vec2 texcoord;\n"
"varying vec2 v_texcoord;\n"
"void main()\n"
"{\n"
" gl_Position = proj * position;\n"
" v_texcoord = texcoord;\n"
"}\n";
static const char fragment_shader[] =
/* "precision mediump float;\n" */
"varying vec2 v_texcoord;\n"
"uniform sampler2D tex;\n"
"void main()\n"
"{\n"
" gl_FragColor = texture2D(tex, v_texcoord)\n;"
"}\n";
static int
init_shaders(struct wlsc_compositor *ec)
{
GLuint v, f, program;
const char *p;
char msg[512];
GLfloat vertices[4 * 5];
GLint status;
p = vertex_shader;
v = glCreateShader(GL_VERTEX_SHADER);
glShaderSource(v, 1, &p, NULL);
glCompileShader(v);
glGetShaderiv(v, GL_COMPILE_STATUS, &status);
if (!status) {
glGetShaderInfoLog(v, sizeof msg, NULL, msg);
fprintf(stderr, "vertex shader info: %s\n", msg);
return -1;
}
p = fragment_shader;
f = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(f, 1, &p, NULL);
glCompileShader(f);
glGetShaderiv(f, GL_COMPILE_STATUS, &status);
if (!status) {
glGetShaderInfoLog(f, sizeof msg, NULL, msg);
fprintf(stderr, "fragment shader info: %s\n", msg);
return -1;
}
program = glCreateProgram();
glAttachShader(program, v);
glAttachShader(program, f);
glBindAttribLocation(program, 0, "position");
glBindAttribLocation(program, 1, "texcoord");
glLinkProgram(program);
glGetProgramiv(program, GL_LINK_STATUS, &status);
if (!status) {
glGetProgramInfoLog(program, sizeof msg, NULL, msg);
fprintf(stderr, "link info: %s\n", msg);
return -1;
}
glUseProgram(program);
ec->proj_uniform = glGetUniformLocation(program, "proj");
ec->tex_uniform = glGetUniformLocation(program, "tex");
vertices[ 0] = 0.0;
vertices[ 1] = 0.0;
vertices[ 2] = 0.0;
vertices[ 3] = 0.0;
vertices[ 4] = 0.0;
vertices[ 5] = 0.0;
vertices[ 6] = 1.0;
vertices[ 7] = 0.0;
vertices[ 8] = 0.0;
vertices[ 9] = 1.0;
vertices[10] = 1.0;
vertices[11] = 0.0;
vertices[12] = 0.0;
vertices[13] = 1.0;
vertices[14] = 0.0;
vertices[15] = 1.0;
vertices[16] = 1.0;
vertices[17] = 0.0;
vertices[18] = 1.0;
vertices[19] = 1.0;
glGenBuffers(1, &ec->vbo);
glBindBuffer(GL_ARRAY_BUFFER, ec->vbo);
glBufferData(GL_ARRAY_BUFFER, sizeof vertices, vertices, GL_STATIC_DRAW);
return 0;
}
static const struct wl_interface visual_interface = {
"visual", 1,
};
static void
add_visuals(struct wlsc_compositor *ec)
{
ec->argb_visual.base.interface = &visual_interface;
ec->argb_visual.base.implementation = NULL;
wl_display_add_object(ec->wl_display, &ec->argb_visual.base);
wl_display_add_global(ec->wl_display, &ec->argb_visual.base, NULL);
ec->premultiplied_argb_visual.base.interface = &visual_interface;
ec->premultiplied_argb_visual.base.implementation = NULL;
wl_display_add_object(ec->wl_display,
&ec->premultiplied_argb_visual.base);
wl_display_add_global(ec->wl_display,
&ec->premultiplied_argb_visual.base, NULL);
ec->rgb_visual.base.interface = &visual_interface;
ec->rgb_visual.base.implementation = NULL;
wl_display_add_object(ec->wl_display, &ec->rgb_visual.base);
wl_display_add_global(ec->wl_display, &ec->rgb_visual.base, NULL);
}
void
wlsc_output_init(struct wlsc_output *output, struct wlsc_compositor *c,
int x, int y, int width, int height)
{
output->compositor = c;
output->x = x;
output->y = y;
output->width = width;
output->height = height;
output->background =
background_create(output, option_background);
wlsc_matrix_init(&output->matrix);
wlsc_matrix_translate(&output->matrix,
-output->x - output->width / 2.0,
-output->y - output->height / 2.0, 0);
wlsc_matrix_scale(&output->matrix,
2.0 / output->width, 2.0 / output->height, 1);
output->base.interface = &wl_output_interface;
wl_display_add_object(c->wl_display, &output->base);
wl_display_add_global(c->wl_display, &output->base,
wlsc_output_post_geometry);
}
int
wlsc_compositor_init(struct wlsc_compositor *ec, struct wl_display *display)
{
struct wl_event_loop *loop;
ec->wl_display = display;
wl_display_set_compositor(display, &ec->base, &compositor_interface);
add_visuals(ec);
wl_list_init(&ec->surface_list);
wl_list_init(&ec->input_device_list);
wl_list_init(&ec->output_list);
wl_list_init(&ec->surface_destroy_listener_list);
screenshooter_create(ec);
glGenFramebuffers(1, &ec->fbo);
glBindFramebuffer(GL_FRAMEBUFFER, ec->fbo);
glActiveTexture(GL_TEXTURE0);
if (init_shaders(ec) < 0)
return -1;
loop = wl_display_get_event_loop(ec->wl_display);
ec->timer_source = wl_event_loop_add_timer(loop, repaint, ec);
wlsc_compositor_schedule_repaint(ec);
return 0;
}
/* The plan here is to generate a random anonymous socket name and
* advertise that through a service on the session dbus.
*/
static const char socket_name[] = "\0wayland";
int main(int argc, char *argv[])
{
struct wl_display *display;
struct wlsc_compositor *ec;
GError *error = NULL;
GOptionContext *context;
context = g_option_context_new(NULL);
g_option_context_add_main_entries(context, option_entries, "Wayland");
if (!g_option_context_parse(context, &argc, &argv, &error)) {
fprintf(stderr, "option parsing failed: %s\n", error->message);
exit(EXIT_FAILURE);
}
display = wl_display_create();
if (getenv("DISPLAY"))
ec = x11_compositor_create(display);
else
ec = drm_compositor_create(display);
if (ec == NULL) {
fprintf(stderr, "failed to create compositor\n");
exit(EXIT_FAILURE);
}
if (wl_display_add_socket(display, socket_name, sizeof socket_name)) {
fprintf(stderr, "failed to add socket: %m\n");
exit(EXIT_FAILURE);
}
wl_display_run(display);
return 0;
}
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