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clients: Add a client that renders transformed buffers

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This new client, called transformed, renders a cross with the top part
red and the right green, with the same transform as the output the
surface is in.

This is based on simple-egl.
Ander Conselvan de Oliveira 12 years ago committed by Kristian Høgsberg
parent 2908a3df0d
commit 1b4312d326
2 changed files with 793 additions and 1 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 7
      clients/Makefile.am
  2. 787
      clients/transformed.c

7
clients/Makefile.am
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@ -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

787
clients/transformed.c
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@ -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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <math.h>
#include <assert.h>
#include <signal.h>
#include <linux/input.h>
#include <wayland-client.h>
#include <wayland-egl.h>
#include <GLES2/gl2.h>
#include <EGL/egl.h>
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,
&registry_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;
}
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