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weston/clients/simple-dmabuf-egl.c

1572 lines
40 KiB

/*
* Copyright © 2011 Benjamin Franzke
* Copyright © 2010 Intel Corporation
* Copyright © 2014,2018 Collabora Ltd.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "config.h"
#include <assert.h>
#include <fcntl.h>
#include <getopt.h>
#include <signal.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/time.h>
#include <xf86drm.h>
#include <gbm.h>
#include <wayland-client.h>
#include "shared/helpers.h"
#include "shared/platform.h"
#include "shared/weston-drm-fourcc.h"
#include <libweston/zalloc.h>
#include "xdg-shell-client-protocol.h"
#include "fullscreen-shell-unstable-v1-client-protocol.h"
#include "linux-dmabuf-unstable-v1-client-protocol.h"
#include "weston-direct-display-client-protocol.h"
#include "linux-explicit-synchronization-unstable-v1-client-protocol.h"
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include "shared/weston-egl-ext.h"
/* Possible options that affect the displayed image */
#define OPT_IMMEDIATE (1 << 0) /* create wl_buffer immediately */
#define OPT_IMPLICIT_SYNC (1 << 1) /* force implicit sync */
#define OPT_MANDELBROT (1 << 2) /* render mandelbrot */
#define OPT_DIRECT_DISPLAY (1 << 3) /* direct-display */
#define MAX_BUFFER_PLANES 4
struct display {
struct wl_display *display;
struct wl_registry *registry;
struct wl_compositor *compositor;
struct xdg_wm_base *wm_base;
struct zwp_fullscreen_shell_v1 *fshell;
struct zwp_linux_dmabuf_v1 *dmabuf;
struct weston_direct_display_v1 *direct_display;
struct zwp_linux_explicit_synchronization_v1 *explicit_sync;
uint32_t format;
bool format_supported;
uint64_t *modifiers;
int modifiers_count;
int req_dmabuf_immediate;
bool use_explicit_sync;
struct {
EGLDisplay display;
EGLContext context;
EGLConfig conf;
bool has_dma_buf_import_modifiers;
bool has_no_config_context;
PFNEGLQUERYDMABUFMODIFIERSEXTPROC query_dma_buf_modifiers;
PFNEGLCREATEIMAGEKHRPROC create_image;
PFNEGLDESTROYIMAGEKHRPROC destroy_image;
PFNGLEGLIMAGETARGETTEXTURE2DOESPROC image_target_texture_2d;
PFNEGLCREATESYNCKHRPROC create_sync;
PFNEGLDESTROYSYNCKHRPROC destroy_sync;
PFNEGLCLIENTWAITSYNCKHRPROC client_wait_sync;
PFNEGLDUPNATIVEFENCEFDANDROIDPROC dup_native_fence_fd;
PFNEGLWAITSYNCKHRPROC wait_sync;
} egl;
struct {
int drm_fd;
struct gbm_device *device;
} gbm;
};
struct buffer {
struct display *display;
struct wl_buffer *buffer;
int busy;
struct gbm_bo *bo;
int width;
int height;
int format;
uint64_t modifier;
int plane_count;
int dmabuf_fds[MAX_BUFFER_PLANES];
uint32_t strides[MAX_BUFFER_PLANES];
uint32_t offsets[MAX_BUFFER_PLANES];
EGLImageKHR egl_image;
GLuint gl_texture;
GLuint gl_fbo;
struct zwp_linux_buffer_release_v1 *buffer_release;
/* The buffer owns the release_fence_fd, until it passes ownership
* to it to EGL (see wait_for_buffer_release_fence). */
int release_fence_fd;
};
#define NUM_BUFFERS 4
struct window {
struct display *display;
int width, height;
struct wl_surface *surface;
struct xdg_surface *xdg_surface;
struct xdg_toplevel *xdg_toplevel;
struct zwp_linux_surface_synchronization_v1 *surface_sync;
struct buffer buffers[NUM_BUFFERS];
struct wl_callback *callback;
bool initialized;
bool wait_for_configure;
struct {
GLuint program;
GLuint pos;
GLuint color;
GLuint offset_uniform;
} gl;
bool render_mandelbrot;
};
static sig_atomic_t running = 1;
static void
redraw(void *data, struct wl_callback *callback, uint32_t time);
static void
buffer_release(void *data, struct wl_buffer *buffer)
{
struct buffer *mybuf = data;
mybuf->busy = 0;
}
static const struct wl_buffer_listener buffer_listener = {
buffer_release
};
static void
buffer_free(struct buffer *buf)
{
int i;
if (buf->release_fence_fd >= 0)
close(buf->release_fence_fd);
if (buf->buffer_release)
zwp_linux_buffer_release_v1_destroy(buf->buffer_release);
if (buf->gl_fbo)
glDeleteFramebuffers(1, &buf->gl_fbo);
if (buf->gl_texture)
glDeleteTextures(1, &buf->gl_texture);
if (buf->egl_image) {
buf->display->egl.destroy_image(buf->display->egl.display,
buf->egl_image);
}
if (buf->buffer)
wl_buffer_destroy(buf->buffer);
if (buf->bo)
gbm_bo_destroy(buf->bo);
for (i = 0; i < buf->plane_count; ++i) {
if (buf->dmabuf_fds[i] >= 0)
close(buf->dmabuf_fds[i]);
}
}
static void
create_succeeded(void *data,
struct zwp_linux_buffer_params_v1 *params,
struct wl_buffer *new_buffer)
{
struct buffer *buffer = data;
buffer->buffer = new_buffer;
/* When not using explicit synchronization listen to wl_buffer.release
* for release notifications, otherwise we are going to use
* zwp_linux_buffer_release_v1. */
if (!buffer->display->use_explicit_sync) {
wl_buffer_add_listener(buffer->buffer, &buffer_listener,
buffer);
}
zwp_linux_buffer_params_v1_destroy(params);
}
static void
create_failed(void *data, struct zwp_linux_buffer_params_v1 *params)
{
struct buffer *buffer = data;
buffer->buffer = NULL;
running = 0;
zwp_linux_buffer_params_v1_destroy(params);
fprintf(stderr, "Error: zwp_linux_buffer_params.create failed.\n");
}
static const struct zwp_linux_buffer_params_v1_listener params_listener = {
create_succeeded,
create_failed
};
static bool
create_fbo_for_buffer(struct display *display, struct buffer *buffer)
{
static const int general_attribs = 3;
static const int plane_attribs = 5;
static const int entries_per_attrib = 2;
EGLint attribs[(general_attribs + plane_attribs * MAX_BUFFER_PLANES) *
entries_per_attrib + 1];
unsigned int atti = 0;
attribs[atti++] = EGL_WIDTH;
attribs[atti++] = buffer->width;
attribs[atti++] = EGL_HEIGHT;
attribs[atti++] = buffer->height;
attribs[atti++] = EGL_LINUX_DRM_FOURCC_EXT;
attribs[atti++] = buffer->format;
#define ADD_PLANE_ATTRIBS(plane_idx) { \
attribs[atti++] = EGL_DMA_BUF_PLANE ## plane_idx ## _FD_EXT; \
attribs[atti++] = buffer->dmabuf_fds[plane_idx]; \
attribs[atti++] = EGL_DMA_BUF_PLANE ## plane_idx ## _OFFSET_EXT; \
attribs[atti++] = (int) buffer->offsets[plane_idx]; \
attribs[atti++] = EGL_DMA_BUF_PLANE ## plane_idx ## _PITCH_EXT; \
attribs[atti++] = (int) buffer->strides[plane_idx]; \
if (display->egl.has_dma_buf_import_modifiers) { \
attribs[atti++] = EGL_DMA_BUF_PLANE ## plane_idx ## _MODIFIER_LO_EXT; \
attribs[atti++] = buffer->modifier & 0xFFFFFFFF; \
attribs[atti++] = EGL_DMA_BUF_PLANE ## plane_idx ## _MODIFIER_HI_EXT; \
attribs[atti++] = buffer->modifier >> 32; \
} \
}
if (buffer->plane_count > 0)
ADD_PLANE_ATTRIBS(0);
if (buffer->plane_count > 1)
ADD_PLANE_ATTRIBS(1);
if (buffer->plane_count > 2)
ADD_PLANE_ATTRIBS(2);
if (buffer->plane_count > 3)
ADD_PLANE_ATTRIBS(3);
#undef ADD_PLANE_ATTRIBS
attribs[atti] = EGL_NONE;
assert(atti < ARRAY_LENGTH(attribs));
buffer->egl_image = display->egl.create_image(display->egl.display,
EGL_NO_CONTEXT,
EGL_LINUX_DMA_BUF_EXT,
NULL, attribs);
if (buffer->egl_image == EGL_NO_IMAGE_KHR) {
fprintf(stderr, "EGLImageKHR creation failed\n");
return false;
}
eglMakeCurrent(display->egl.display, EGL_NO_SURFACE, EGL_NO_SURFACE,
display->egl.context);
glGenTextures(1, &buffer->gl_texture);
glBindTexture(GL_TEXTURE_2D, buffer->gl_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_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
display->egl.image_target_texture_2d(GL_TEXTURE_2D, buffer->egl_image);
glGenFramebuffers(1, &buffer->gl_fbo);
glBindFramebuffer(GL_FRAMEBUFFER, buffer->gl_fbo);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D, buffer->gl_texture, 0);
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
fprintf(stderr, "FBO creation failed\n");
return false;
}
return true;
}
static int
create_dmabuf_buffer(struct display *display, struct buffer *buffer,
int width, int height, uint32_t opts)
{
/* Y-Invert the buffer image, since we are going to renderer to the
* buffer through a FBO. */
static uint32_t flags = ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_Y_INVERT;
struct zwp_linux_buffer_params_v1 *params;
int i;
buffer->display = display;
buffer->width = width;
buffer->height = height;
buffer->format = display->format;
buffer->release_fence_fd = -1;
#ifdef HAVE_GBM_MODIFIERS
if (display->modifiers_count > 0) {
buffer->bo = gbm_bo_create_with_modifiers(display->gbm.device,
buffer->width,
buffer->height,
buffer->format,
display->modifiers,
display->modifiers_count);
if (buffer->bo)
buffer->modifier = gbm_bo_get_modifier(buffer->bo);
}
#endif
if (!buffer->bo) {
buffer->bo = gbm_bo_create(display->gbm.device,
buffer->width,
buffer->height,
buffer->format,
GBM_BO_USE_RENDERING);
buffer->modifier = DRM_FORMAT_MOD_INVALID;
}
if (!buffer->bo) {
fprintf(stderr, "create_bo failed\n");
goto error;
}
#ifdef HAVE_GBM_MODIFIERS
buffer->plane_count = gbm_bo_get_plane_count(buffer->bo);
for (i = 0; i < buffer->plane_count; ++i) {
int ret;
union gbm_bo_handle handle;
handle = gbm_bo_get_handle_for_plane(buffer->bo, i);
if (handle.s32 == -1) {
fprintf(stderr, "error: failed to get gbm_bo_handle\n");
goto error;
}
ret = drmPrimeHandleToFD(display->gbm.drm_fd, handle.u32, 0,
&buffer->dmabuf_fds[i]);
if (ret < 0 || buffer->dmabuf_fds[i] < 0) {
fprintf(stderr, "error: failed to get dmabuf_fd\n");
goto error;
}
buffer->strides[i] = gbm_bo_get_stride_for_plane(buffer->bo, i);
buffer->offsets[i] = gbm_bo_get_offset(buffer->bo, i);
}
#else
buffer->plane_count = 1;
buffer->strides[0] = gbm_bo_get_stride(buffer->bo);
buffer->dmabuf_fds[0] = gbm_bo_get_fd(buffer->bo);
if (buffer->dmabuf_fds[0] < 0) {
fprintf(stderr, "error: failed to get dmabuf_fd\n");
goto error;
}
#endif
params = zwp_linux_dmabuf_v1_create_params(display->dmabuf);
if ((opts & OPT_DIRECT_DISPLAY) && display->direct_display) {
weston_direct_display_v1_enable(display->direct_display, params);
/* turn off Y_INVERT otherwise linux-dmabuf will reject it and
* we need all dmabuf flags turned off */
flags &= ~ZWP_LINUX_BUFFER_PARAMS_V1_FLAGS_Y_INVERT;
fprintf(stdout, "image is y-inverted as direct-display flag was set, "
"dmabuf y-inverted attribute flag was removed\n");
}
for (i = 0; i < buffer->plane_count; ++i) {
zwp_linux_buffer_params_v1_add(params,
buffer->dmabuf_fds[i],
i,
buffer->offsets[i],
buffer->strides[i],
buffer->modifier >> 32,
buffer->modifier & 0xffffffff);
}
zwp_linux_buffer_params_v1_add_listener(params, &params_listener, buffer);
if (display->req_dmabuf_immediate) {
buffer->buffer =
zwp_linux_buffer_params_v1_create_immed(params,
buffer->width,
buffer->height,
buffer->format,
flags);
/* When not using explicit synchronization listen to
* wl_buffer.release for release notifications, otherwise we
* are going to use zwp_linux_buffer_release_v1. */
if (!buffer->display->use_explicit_sync) {
wl_buffer_add_listener(buffer->buffer,
&buffer_listener,
buffer);
}
}
else {
zwp_linux_buffer_params_v1_create(params,
buffer->width,
buffer->height,
buffer->format,
flags);
}
if (!create_fbo_for_buffer(display, buffer))
goto error;
return 0;
error:
buffer_free(buffer);
return -1;
}
static void
xdg_surface_handle_configure(void *data, struct xdg_surface *surface,
uint32_t serial)
{
struct window *window = data;
xdg_surface_ack_configure(surface, serial);
if (window->initialized && window->wait_for_configure)
redraw(window, NULL, 0);
window->wait_for_configure = false;
}
static const struct xdg_surface_listener xdg_surface_listener = {
xdg_surface_handle_configure,
};
static void
xdg_toplevel_handle_configure(void *data, struct xdg_toplevel *toplevel,
int32_t width, int32_t height,
struct wl_array *states)
{
}
static void
xdg_toplevel_handle_close(void *data, struct xdg_toplevel *xdg_toplevel)
{
running = 0;
}
static const struct xdg_toplevel_listener xdg_toplevel_listener = {
xdg_toplevel_handle_configure,
xdg_toplevel_handle_close,
};
static const char *vert_shader_text =
"uniform float offset;\n"
"attribute vec4 pos;\n"
"attribute vec4 color;\n"
"varying vec4 v_color;\n"
"void main() {\n"
" gl_Position = pos + vec4(offset, offset, 0.0, 0.0);\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 const char *vert_shader_mandelbrot_text =
"uniform float offset;\n"
"attribute vec4 pos;\n"
"varying vec2 v_pos;\n"
"void main() {\n"
" v_pos = pos.xy;\n"
" gl_Position = pos + vec4(offset, offset, 0.0, 0.0);\n"
"}\n";
/* Mandelbrot set shader using the escape time algorithm. */
static const char *frag_shader_mandelbrot_text =
"precision mediump float;\n"
"varying vec2 v_pos;\n"
"void main() {\n"
" const int max_iteration = 500;\n"
" // Scale and translate position to get a nice mandelbrot drawing for\n"
" // the used v_pos x and y range (-0.5 to 0.5).\n"
" float x0 = 3.0 * v_pos.x - 0.5;\n"
" float y0 = 3.0 * v_pos.y;\n"
" float x = 0.0;\n"
" float y = 0.0;\n"
" int iteration = 0;\n"
" while (x * x + y * y <= 4.0 && iteration < max_iteration) {\n"
" float xtemp = x * x - y * y + x0;\n"
" y = 2.0 * x * y + y0;\n"
" x = xtemp;\n"
" ++iteration;\n"
" }\n"
" float red = iteration == max_iteration ?\n"
" 0.0 : 1.0 - fract(float(iteration) / 20.0);\n"
" gl_FragColor = vec4(red, 0.0, 0.0, 1.0);\n"
"}\n";
static GLuint
create_shader(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);
return 0;
}
return shader;
}
static GLuint
create_and_link_program(GLuint vert, GLuint frag)
{
GLint status;
GLuint program = glCreateProgram();
glAttachShader(program, vert);
glAttachShader(program, frag);
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);
return 0;
}
return program;
}
static bool
window_set_up_gl(struct window *window)
{
GLuint vert = create_shader(
window->render_mandelbrot ? vert_shader_mandelbrot_text :
vert_shader_text,
GL_VERTEX_SHADER);
GLuint frag = create_shader(
window->render_mandelbrot ? frag_shader_mandelbrot_text :
frag_shader_text,
GL_FRAGMENT_SHADER);
window->gl.program = create_and_link_program(vert, frag);
glDeleteShader(vert);
glDeleteShader(frag);
window->gl.pos = glGetAttribLocation(window->gl.program, "pos");
window->gl.color = glGetAttribLocation(window->gl.program, "color");
glUseProgram(window->gl.program);
window->gl.offset_uniform =
glGetUniformLocation(window->gl.program, "offset");
return window->gl.program != 0;
}
static void
destroy_window(struct window *window)
{
int i;
if (window->gl.program)
glDeleteProgram(window->gl.program);
if (window->callback)
wl_callback_destroy(window->callback);
for (i = 0; i < NUM_BUFFERS; i++) {
if (window->buffers[i].buffer)
buffer_free(&window->buffers[i]);
}
if (window->xdg_toplevel)
xdg_toplevel_destroy(window->xdg_toplevel);
if (window->xdg_surface)
xdg_surface_destroy(window->xdg_surface);
if (window->surface_sync)
zwp_linux_surface_synchronization_v1_destroy(window->surface_sync);
wl_surface_destroy(window->surface);
free(window);
}
static struct window *
create_window(struct display *display, int width, int height, int opts)
{
struct window *window;
int i;
int ret;
window = zalloc(sizeof *window);
if (!window)
return NULL;
window->callback = NULL;
window->display = display;
window->width = width;
window->height = height;
window->surface = wl_compositor_create_surface(display->compositor);
if (display->wm_base) {
window->xdg_surface =
xdg_wm_base_get_xdg_surface(display->wm_base,
window->surface);
assert(window->xdg_surface);
xdg_surface_add_listener(window->xdg_surface,
&xdg_surface_listener, window);
window->xdg_toplevel =
xdg_surface_get_toplevel(window->xdg_surface);
assert(window->xdg_toplevel);
xdg_toplevel_add_listener(window->xdg_toplevel,
&xdg_toplevel_listener, window);
xdg_toplevel_set_title(window->xdg_toplevel, "simple-dmabuf-egl");
xdg_toplevel_set_app_id(window->xdg_toplevel,
"org.freedesktop.weston.simple-dmabuf-egl");
window->wait_for_configure = true;
wl_surface_commit(window->surface);
} else if (display->fshell) {
zwp_fullscreen_shell_v1_present_surface(display->fshell,
window->surface,
ZWP_FULLSCREEN_SHELL_V1_PRESENT_METHOD_DEFAULT,
NULL);
} else {
assert(0);
}
if (display->explicit_sync) {
window->surface_sync =
zwp_linux_explicit_synchronization_v1_get_synchronization(
display->explicit_sync, window->surface);
assert(window->surface_sync);
}
for (i = 0; i < NUM_BUFFERS; ++i) {
int j;
for (j = 0; j < MAX_BUFFER_PLANES; ++j)
window->buffers[i].dmabuf_fds[j] = -1;
}
for (i = 0; i < NUM_BUFFERS; ++i) {
ret = create_dmabuf_buffer(display, &window->buffers[i],
width, height, opts);
if (ret < 0)
goto error;
}
window->render_mandelbrot = opts & OPT_MANDELBROT;
if (!window_set_up_gl(window))
goto error;
return window;
error:
if (window)
destroy_window(window);
return NULL;
}
static int
create_egl_fence_fd(struct window *window)
{
struct display *d = window->display;
EGLSyncKHR sync = d->egl.create_sync(d->egl.display,
EGL_SYNC_NATIVE_FENCE_ANDROID,
NULL);
int fd;
assert(sync != EGL_NO_SYNC_KHR);
/* We need to flush before we can get the fence fd. */
glFlush();
fd = d->egl.dup_native_fence_fd(d->egl.display, sync);
assert(fd >= 0);
d->egl.destroy_sync(d->egl.display, sync);
return fd;
}
static struct buffer *
window_next_buffer(struct window *window)
{
int i;
for (i = 0; i < NUM_BUFFERS; i++)
if (!window->buffers[i].busy)
return &window->buffers[i];
return NULL;
}
static const struct wl_callback_listener frame_listener;
/* Renders a square moving from the lower left corner to the
* upper right corner of the window. The square's vertices have
* the following colors:
*
* green +-----+ yellow
* | |
* | |
* red +-----+ blue
*/
static void
render(struct window *window, struct buffer *buffer)
{
/* Complete a movement iteration in 5000 ms. */
static const uint64_t iteration_ms = 5000;
static const GLfloat verts[4][2] = {
{ -0.5, -0.5 },
{ -0.5, 0.5 },
{ 0.5, -0.5 },
{ 0.5, 0.5 }
};
static const GLfloat colors[4][3] = {
{ 1, 0, 0 },
{ 0, 1, 0 },
{ 0, 0, 1 },
{ 1, 1, 0 }
};
GLfloat offset;
struct timeval tv;
uint64_t time_ms;
gettimeofday(&tv, NULL);
time_ms = tv.tv_sec * 1000 + tv.tv_usec / 1000;
/* Split time_ms in repeating windows of [0, iteration_ms) and map them
* to offsets in the [-0.5, 0.5) range. */
offset = (time_ms % iteration_ms) / (float) iteration_ms - 0.5;
/* Direct all GL draws to the buffer through the FBO */
glBindFramebuffer(GL_FRAMEBUFFER, buffer->gl_fbo);
glViewport(0, 0, window->width, window->height);
glUniform1f(window->gl.offset_uniform, offset);
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.color, 3, GL_FLOAT, GL_FALSE, 0, colors);
glEnableVertexAttribArray(window->gl.pos);
glEnableVertexAttribArray(window->gl.color);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glDisableVertexAttribArray(window->gl.pos);
glDisableVertexAttribArray(window->gl.color);
}
static void
render_mandelbrot(struct window *window, struct buffer *buffer)
{
/* Complete a movement iteration in 5000 ms. */
static const uint64_t iteration_ms = 5000;
/* Split drawing in a square grid consisting of grid_side * grid_side
* cells. */
static const int grid_side = 4;
GLfloat norm_cell_side = 1.0 / grid_side;
int num_cells = grid_side * grid_side;
GLfloat offset;
struct timeval tv;
uint64_t time_ms;
int i;
gettimeofday(&tv, NULL);
time_ms = tv.tv_sec * 1000 + tv.tv_usec / 1000;
/* Split time_ms in repeating windows of [0, iteration_ms) and map them
* to offsets in the [-0.5, 0.5) range. */
offset = (time_ms % iteration_ms) / (float) iteration_ms - 0.5;
/* Direct all GL draws to the buffer through the FBO */
glBindFramebuffer(GL_FRAMEBUFFER, buffer->gl_fbo);
glViewport(0, 0, window->width, window->height);
glUniform1f(window->gl.offset_uniform, offset);
glClearColor(0.6, 0.6, 0.6, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
for (i = 0; i < num_cells; ++i) {
/* Calculate the vertex coordinates of the current grid cell. */
int row = i / grid_side;
int col = i % grid_side;
GLfloat left = -0.5 + norm_cell_side * col;
GLfloat right = left + norm_cell_side;
GLfloat top = 0.5 - norm_cell_side * row;
GLfloat bottom = top - norm_cell_side;
GLfloat verts[4][2] = {
{ left, bottom },
{ left, top },
{ right, bottom },
{ right, top }
};
/* ... and draw it. */
glVertexAttribPointer(window->gl.pos, 2, GL_FLOAT, GL_FALSE, 0, verts);
glEnableVertexAttribArray(window->gl.pos);
glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
glDisableVertexAttribArray(window->gl.pos);
}
}
static void
buffer_fenced_release(void *data,
struct zwp_linux_buffer_release_v1 *release,
int32_t fence)
{
struct buffer *buffer = data;
assert(release == buffer->buffer_release);
assert(buffer->release_fence_fd == -1);
buffer->busy = 0;
buffer->release_fence_fd = fence;
zwp_linux_buffer_release_v1_destroy(buffer->buffer_release);
buffer->buffer_release = NULL;
}
static void
buffer_immediate_release(void *data,
struct zwp_linux_buffer_release_v1 *release)
{
struct buffer *buffer = data;
assert(release == buffer->buffer_release);
assert(buffer->release_fence_fd == -1);
buffer->busy = 0;
zwp_linux_buffer_release_v1_destroy(buffer->buffer_release);
buffer->buffer_release = NULL;
}
static const struct zwp_linux_buffer_release_v1_listener buffer_release_listener = {
buffer_fenced_release,
buffer_immediate_release,
};
static void
wait_for_buffer_release_fence(struct buffer *buffer)
{
struct display *d = buffer->display;
EGLint attrib_list[] = {
EGL_SYNC_NATIVE_FENCE_FD_ANDROID, buffer->release_fence_fd,
EGL_NONE,
};
EGLSyncKHR sync = d->egl.create_sync(d->egl.display,
EGL_SYNC_NATIVE_FENCE_ANDROID,
attrib_list);
int ret;
assert(sync);
/* EGLSyncKHR takes ownership of the fence fd. */
buffer->release_fence_fd = -1;
if (d->egl.wait_sync)
ret = d->egl.wait_sync(d->egl.display, sync, 0);
else
ret = d->egl.client_wait_sync(d->egl.display, sync, 0,
EGL_FOREVER_KHR);
assert(ret == EGL_TRUE);
ret = d->egl.destroy_sync(d->egl.display, sync);
assert(ret == EGL_TRUE);
}
static void
redraw(void *data, struct wl_callback *callback, uint32_t time)
{
struct window *window = data;
struct buffer *buffer;
buffer = window_next_buffer(window);
if (!buffer) {
fprintf(stderr,
!callback ? "Failed to create the first buffer.\n" :
"All buffers busy at redraw(). Server bug?\n");
abort();
}
if (buffer->release_fence_fd >= 0)
wait_for_buffer_release_fence(buffer);
if (window->render_mandelbrot)
render_mandelbrot(window, buffer);
else
render(window, buffer);
if (window->display->use_explicit_sync) {
int fence_fd = create_egl_fence_fd(window);
zwp_linux_surface_synchronization_v1_set_acquire_fence(
window->surface_sync, fence_fd);
close(fence_fd);
buffer->buffer_release =
zwp_linux_surface_synchronization_v1_get_release(window->surface_sync);
zwp_linux_buffer_release_v1_add_listener(
buffer->buffer_release, &buffer_release_listener, buffer);
} else {
glFinish();
}
wl_surface_attach(window->surface, buffer->buffer, 0, 0);
wl_surface_damage(window->surface, 0, 0, window->width, window->height);
if (callback)
wl_callback_destroy(callback);
window->callback = wl_surface_frame(window->surface);
wl_callback_add_listener(window->callback, &frame_listener, window);
wl_surface_commit(window->surface);
buffer->busy = 1;
}
static const struct wl_callback_listener frame_listener = {
redraw
};
static void
dmabuf_modifiers(void *data, struct zwp_linux_dmabuf_v1 *zwp_linux_dmabuf,
uint32_t format, uint32_t modifier_hi, uint32_t modifier_lo)
{
struct display *d = data;
uint64_t modifier = ((uint64_t)modifier_hi << 32) | modifier_lo;
if (format != d->format) {
return;
}
d->format_supported = true;
if (modifier != DRM_FORMAT_MOD_INVALID) {
++d->modifiers_count;
d->modifiers = realloc(d->modifiers,
d->modifiers_count * sizeof(*d->modifiers));
d->modifiers[d->modifiers_count - 1] = modifier;
}
}
static void
dmabuf_format(void *data, struct zwp_linux_dmabuf_v1 *zwp_linux_dmabuf, uint32_t format)
{
/* XXX: deprecated */
}
static const struct zwp_linux_dmabuf_v1_listener dmabuf_listener = {
dmabuf_format,
dmabuf_modifiers
};
static void
xdg_wm_base_ping(void *data, struct xdg_wm_base *wm_base, uint32_t serial)
{
xdg_wm_base_pong(wm_base, serial);
}
static const struct xdg_wm_base_listener xdg_wm_base_listener = {
xdg_wm_base_ping,
};
static void
registry_handle_global(void *data, struct wl_registry *registry,
uint32_t id, const char *interface, uint32_t version)
{
struct display *d = data;
if (strcmp(interface, "wl_compositor") == 0) {
d->compositor =
wl_registry_bind(registry,
id, &wl_compositor_interface, 1);
} else if (strcmp(interface, "xdg_wm_base") == 0) {
d->wm_base = wl_registry_bind(registry,
id, &xdg_wm_base_interface, 1);
xdg_wm_base_add_listener(d->wm_base, &xdg_wm_base_listener, d);
} else if (strcmp(interface, "zwp_fullscreen_shell_v1") == 0) {
d->fshell = wl_registry_bind(registry,
id, &zwp_fullscreen_shell_v1_interface, 1);
} else if (strcmp(interface, "zwp_linux_dmabuf_v1") == 0) {
if (version < 3)
return;
d->dmabuf = wl_registry_bind(registry,
id, &zwp_linux_dmabuf_v1_interface, 3);
zwp_linux_dmabuf_v1_add_listener(d->dmabuf, &dmabuf_listener, d);
} else if (strcmp(interface, "zwp_linux_explicit_synchronization_v1") == 0) {
d->explicit_sync = wl_registry_bind(
registry, id,
&zwp_linux_explicit_synchronization_v1_interface, 1);
} else if (strcmp(interface, "weston_direct_display_v1") == 0) {
d->direct_display = wl_registry_bind(registry,
id, &weston_direct_display_v1_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 void
destroy_display(struct display *display)
{
if (display->gbm.device)
gbm_device_destroy(display->gbm.device);
if (display->gbm.drm_fd >= 0)
close(display->gbm.drm_fd);
if (display->egl.context != EGL_NO_CONTEXT)
eglDestroyContext(display->egl.display, display->egl.context);
if (display->egl.display != EGL_NO_DISPLAY)
eglTerminate(display->egl.display);
free(display->modifiers);
if (display->dmabuf)
zwp_linux_dmabuf_v1_destroy(display->dmabuf);
if (display->wm_base)
xdg_wm_base_destroy(display->wm_base);
if (display->fshell)
zwp_fullscreen_shell_v1_release(display->fshell);
if (display->compositor)
wl_compositor_destroy(display->compositor);
if (display->registry)
wl_registry_destroy(display->registry);
if (display->display) {
wl_display_flush(display->display);
wl_display_disconnect(display->display);
}
free(display);
}
static bool
display_set_up_egl(struct display *display)
{
static const EGLint context_attribs[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
EGLint major, minor, ret, count;
const char *egl_extensions = NULL;
const char *gl_extensions = NULL;
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
};
display->egl.display =
weston_platform_get_egl_display(EGL_PLATFORM_GBM_KHR,
display->gbm.device, NULL);
if (display->egl.display == EGL_NO_DISPLAY) {
fprintf(stderr, "Failed to create EGLDisplay\n");
goto error;
}
if (eglInitialize(display->egl.display, &major, &minor) == EGL_FALSE) {
fprintf(stderr, "Failed to initialize EGLDisplay\n");
goto error;
}
if (eglBindAPI(EGL_OPENGL_ES_API) == EGL_FALSE) {
fprintf(stderr, "Failed to bind OpenGL ES API\n");
goto error;
}
egl_extensions = eglQueryString(display->egl.display, EGL_EXTENSIONS);
assert(egl_extensions != NULL);
if (!weston_check_egl_extension(egl_extensions,
"EGL_EXT_image_dma_buf_import")) {
fprintf(stderr, "EGL_EXT_image_dma_buf_import not supported\n");
goto error;
}
if (!weston_check_egl_extension(egl_extensions,
"EGL_KHR_surfaceless_context")) {
fprintf(stderr, "EGL_KHR_surfaceless_context not supported\n");
goto error;
}
if (weston_check_egl_extension(egl_extensions,
"EGL_KHR_no_config_context")) {
display->egl.has_no_config_context = true;
}
if (display->egl.has_no_config_context) {
display->egl.conf = EGL_NO_CONFIG_KHR;
} else {
fprintf(stderr,
"Warning: EGL_KHR_no_config_context not supported\n");
ret = eglChooseConfig(display->egl.display, config_attribs,
&display->egl.conf, 1, &count);
assert(ret && count >= 1);
}
display->egl.context = eglCreateContext(display->egl.display,
display->egl.conf,
EGL_NO_CONTEXT,
context_attribs);
if (display->egl.context == EGL_NO_CONTEXT) {
fprintf(stderr, "Failed to create EGLContext\n");
goto error;
}
eglMakeCurrent(display->egl.display, EGL_NO_SURFACE, EGL_NO_SURFACE,
display->egl.context);
gl_extensions = (const char *) glGetString(GL_EXTENSIONS);
assert(gl_extensions != NULL);
if (!weston_check_egl_extension(gl_extensions,
"GL_OES_EGL_image")) {
fprintf(stderr, "GL_OES_EGL_image not supported\n");
goto error;
}
if (weston_check_egl_extension(egl_extensions,
"EGL_EXT_image_dma_buf_import_modifiers")) {
display->egl.has_dma_buf_import_modifiers = true;
display->egl.query_dma_buf_modifiers =
(void *) eglGetProcAddress("eglQueryDmaBufModifiersEXT");
assert(display->egl.query_dma_buf_modifiers);
}
display->egl.create_image =
(void *) eglGetProcAddress("eglCreateImageKHR");
assert(display->egl.create_image);
display->egl.destroy_image =
(void *) eglGetProcAddress("eglDestroyImageKHR");
assert(display->egl.destroy_image);
display->egl.image_target_texture_2d =
(void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
assert(display->egl.image_target_texture_2d);
if (weston_check_egl_extension(egl_extensions, "EGL_KHR_fence_sync") &&
weston_check_egl_extension(egl_extensions,
"EGL_ANDROID_native_fence_sync")) {
display->egl.create_sync =
(void *) eglGetProcAddress("eglCreateSyncKHR");
assert(display->egl.create_sync);
display->egl.destroy_sync =
(void *) eglGetProcAddress("eglDestroySyncKHR");
assert(display->egl.destroy_sync);
display->egl.client_wait_sync =
(void *) eglGetProcAddress("eglClientWaitSyncKHR");
assert(display->egl.client_wait_sync);
display->egl.dup_native_fence_fd =
(void *) eglGetProcAddress("eglDupNativeFenceFDANDROID");
assert(display->egl.dup_native_fence_fd);
}
if (weston_check_egl_extension(egl_extensions,
"EGL_KHR_wait_sync")) {
display->egl.wait_sync =
(void *) eglGetProcAddress("eglWaitSyncKHR");
assert(display->egl.wait_sync);
}
return true;
error:
return false;
}
static bool
display_update_supported_modifiers_for_egl(struct display *d)
{
uint64_t *egl_modifiers = NULL;
int num_egl_modifiers = 0;
EGLBoolean ret;
int i;
bool try_modifiers = d->egl.has_dma_buf_import_modifiers;
if (try_modifiers) {
ret = d->egl.query_dma_buf_modifiers(d->egl.display,
d->format,
0, /* max_modifiers */
NULL, /* modifiers */
NULL, /* external_only */
&num_egl_modifiers);
if (ret == EGL_FALSE) {
fprintf(stderr, "Failed to query num EGL modifiers for format\n");
goto error;
}
}
if (!num_egl_modifiers)
try_modifiers = false;
/* If EGL doesn't support modifiers, don't use them at all. */
if (!try_modifiers) {
d->modifiers_count = 0;
free(d->modifiers);
d->modifiers = NULL;
return true;
}
egl_modifiers = zalloc(num_egl_modifiers * sizeof(*egl_modifiers));
ret = d->egl.query_dma_buf_modifiers(d->egl.display,
d->format,
num_egl_modifiers,
egl_modifiers,
NULL, /* external_only */
&num_egl_modifiers);
if (ret == EGL_FALSE) {
fprintf(stderr, "Failed to query EGL modifiers for format\n");
goto error;
}
/* Poor person's set intersection: d->modifiers INTERSECT
* egl_modifiers. If a modifier is not supported, replace it with
* DRM_FORMAT_MOD_INVALID in the d->modifiers array.
*/
for (i = 0; i < d->modifiers_count; ++i) {
uint64_t mod = d->modifiers[i];
bool egl_supported = false;
int j;
for (j = 0; j < num_egl_modifiers; ++j) {
if (egl_modifiers[j] == mod) {
egl_supported = true;
break;
}
}
if (!egl_supported)
d->modifiers[i] = DRM_FORMAT_MOD_INVALID;
}
free(egl_modifiers);
return true;
error:
free(egl_modifiers);
return false;
}
static bool
display_set_up_gbm(struct display *display, char const* drm_render_node)
{
display->gbm.drm_fd = open(drm_render_node, O_RDWR);
if (display->gbm.drm_fd < 0) {
fprintf(stderr, "Failed to open drm render node %s\n",
drm_render_node);
return false;
}
display->gbm.device = gbm_create_device(display->gbm.drm_fd);
if (display->gbm.device == NULL) {
fprintf(stderr, "Failed to create gbm device\n");
return false;
}
return true;
}
static struct display *
create_display(char const *drm_render_node, uint32_t format, int opts)
{
struct display *display = NULL;
display = zalloc(sizeof *display);
if (display == NULL) {
fprintf(stderr, "out of memory\n");
goto error;
}
display->gbm.drm_fd = -1;
display->display = wl_display_connect(NULL);
assert(display->display);
display->format = format;
display->req_dmabuf_immediate = opts & OPT_IMMEDIATE;
display->registry = wl_display_get_registry(display->display);
wl_registry_add_listener(display->registry,
&registry_listener, display);
wl_display_roundtrip(display->display);
if (display->dmabuf == NULL) {
fprintf(stderr, "No zwp_linux_dmabuf global\n");
goto error;
}
wl_display_roundtrip(display->display);
if (!display->format_supported) {
fprintf(stderr, "format 0x%"PRIX32" is not available\n",
display->format);
goto error;
}
/* GBM needs to be initialized before EGL, so that we have a valid
* render node gbm_device to create the EGL display from. */
if (!display_set_up_gbm(display, drm_render_node))
goto error;
if (!display_set_up_egl(display))
goto error;
if (!display_update_supported_modifiers_for_egl(display))
goto error;
/* We use explicit synchronization only if the user hasn't disabled it,
* the compositor supports it, we can handle fence fds. */
display->use_explicit_sync =
!(opts & OPT_IMPLICIT_SYNC) &&
display->explicit_sync &&
display->egl.dup_native_fence_fd;
if (opts & OPT_IMPLICIT_SYNC) {
fprintf(stderr, "Warning: Not using explicit sync, disabled by user\n");
} else if (!display->explicit_sync) {
fprintf(stderr,
"Warning: zwp_linux_explicit_synchronization_v1 not supported,\n"
" will not use explicit synchronization\n");
} else if (!display->egl.dup_native_fence_fd) {
fprintf(stderr,
"Warning: EGL_ANDROID_native_fence_sync not supported,\n"
" will not use explicit synchronization\n");
} else if (!display->egl.wait_sync) {
fprintf(stderr,
"Warning: EGL_KHR_wait_sync not supported,\n"
" will not use server-side wait\n");
}
return display;
error:
if (display != NULL)
destroy_display(display);
return NULL;
}
static void
signal_int(int signum)
{
running = 0;
}
static void
print_usage_and_exit(void)
{
printf("usage flags:\n"
"\t'-i,--import-immediate=<>'"
"\n\t\t0 to import dmabuf via roundtrip, "
"\n\t\t1 to enable import without roundtrip\n"
"\t'-d,--drm-render-node=<>'"
"\n\t\tthe full path to the drm render node to use\n"
"\t'-s,--size=<>'"
"\n\t\tthe window size in pixels (default: 256)\n"
"\t'-e,--explicit-sync=<>'"
"\n\t\t0 to disable explicit sync, "
"\n\t\t1 to enable explicit sync (default: 1)\n"
"\t'-f,--format=0x<>'"
"\n\t\tthe DRM format code to use\n"
"\t'-m,--mandelbrot'"
"\n\t\trender a mandelbrot set with multiple draw calls\n"
"\t'-g,--direct-display'"
"\n\t\tenables weston-direct-display extension to attempt "
"direct scan-out;\n\t\tnote this will cause the image to be "
"displayed inverted as GL uses a\n\t\tdifferent texture "
"coordinate system\n");
exit(0);
}
static int
is_true(const char* c)
{
if (!strcmp(c, "1"))
return 1;
else if (!strcmp(c, "0"))
return 0;
else
print_usage_and_exit();
return 0;
}
int
main(int argc, char **argv)
{
struct sigaction sigint;
struct display *display;
struct window *window;
uint32_t format = DRM_FORMAT_XRGB8888;
int opts = 0;
char const *drm_render_node = "/dev/dri/renderD128";
int c, option_index, ret = 0;
int window_size = 256;
static struct option long_options[] = {
{"import-immediate", required_argument, 0, 'i' },
{"drm-render-node", required_argument, 0, 'd' },
{"size", required_argument, 0, 's' },
{"explicit-sync", required_argument, 0, 'e' },
{"format", required_argument, 0, 'f' },
{"mandelbrot", no_argument, 0, 'm' },
{"direct-display", no_argument, 0, 'g' },
{"help", no_argument , 0, 'h' },
{0, 0, 0, 0}
};
while ((c = getopt_long(argc, argv, "hi:d:s:e:f:mg",
long_options, &option_index)) != -1) {
switch (c) {
case 'i':
if (is_true(optarg))
opts |= OPT_IMMEDIATE;
break;
case 'd':
drm_render_node = optarg;
break;
case 's':
window_size = strtol(optarg, NULL, 10);
break;
case 'e':
if (!is_true(optarg))
opts |= OPT_IMPLICIT_SYNC;
break;
case 'm':
opts |= OPT_MANDELBROT;
break;
case 'g':
opts |= OPT_DIRECT_DISPLAY;
break;
case 'f':
format = strtoul(optarg, NULL, 0);
break;
default:
print_usage_and_exit();
}
}
display = create_display(drm_render_node, format, opts);
if (!display)
return 1;
window = create_window(display, window_size, window_size, opts);
if (!window)
return 1;
sigint.sa_handler = signal_int;
sigemptyset(&sigint.sa_mask);
sigint.sa_flags = SA_RESETHAND;
sigaction(SIGINT, &sigint, NULL);
/* Here we retrieve the linux-dmabuf objects if executed without immed,
* or error */
wl_display_roundtrip(display->display);
if (!running)
return 1;
window->initialized = true;
if (!window->wait_for_configure)
redraw(window, NULL, 0);
while (running && ret != -1)
ret = wl_display_dispatch(display->display);
fprintf(stderr, "simple-dmabuf-egl exiting\n");
destroy_window(window);
destroy_display(display);
return 0;
}