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/*
* gxr
* Copyright 2018 Collabora Ltd.
* Author: Lubosz Sarnecki <lubosz.sarnecki@collabora.com>
* SPDX-License-Identifier: MIT
*/
#include <math.h>
#include <glib.h>
#include <GL/gl.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <gdk/gdk.h>
#include "gxr.h"
#define MAXWIDTH 1920
#define MAXHEIGHT 1080
#define MAXSTRIDE MAXWIDTH * 4
#include "cairo_content.h"
#define OVERLAY_NUM 10
typedef struct Example
{
GMainLoop *loop;
GxrContext *context;
GxrOverlay *overlays[OVERLAY_NUM];
GulkanTexture *textures[OVERLAY_NUM];
int tex_count;
} Example;
typedef struct ExampleOverlayNum
{
Example *example;
int i;
} ExampleOverlayNum;
static cairo_surface_t*
create_cairo_surface (unsigned char *image, char *text)
{
int WIDTH = MAXWIDTH;
int HEIGHT = MAXHEIGHT;
/* To test with randomized texture dimensions
WIDTH -= rand () % 50;
HEIGHT -= rand () % 50;
*/
int STRIDE = (WIDTH * 4);
cairo_surface_t *surface =
cairo_image_surface_create_for_data (image,
CAIRO_FORMAT_ARGB32,
WIDTH, HEIGHT,
STRIDE);
cairo_t *cr = cairo_create (surface);
cairo_rectangle (cr, 0, 0, WIDTH, HEIGHT);
cairo_set_source_rgb (cr, 0.2, 0, 0);
cairo_fill (cr);
cairo_select_font_face (cr, "cairo :monospace",
CAIRO_FONT_SLANT_NORMAL,
CAIRO_FONT_WEIGHT_NORMAL);
cairo_set_font_size (cr, 72);
cairo_move_to (cr, 50, 50);
cairo_set_source_rgb (cr, 0.9, 0.9, 0.9);
cairo_show_text (cr, text);
cairo_destroy (cr);
return surface;
}
static unsigned char image[MAXSTRIDE*MAXHEIGHT];
static gboolean
timeout_callback (gpointer data)
{
ExampleOverlayNum *en = (ExampleOverlayNum*) data;
Example *self = en->example;
GxrOverlay *overlay = self->overlays[en->i];
char key[16];
snprintf (key, 16, "texture-%d", self->tex_count++);
cairo_surface_t *surface = create_cairo_surface (image, key);
if (surface == NULL) {
fprintf (stderr, "Could not create cairo surface.\n");
return -1;
}
GulkanClient *gc = gxr_context_get_gulkan (self->context);
GulkanTexture *n =
gulkan_texture_new_from_cairo_surface (gc,
surface,
VK_FORMAT_R8G8B8A8_UNORM,
VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL);
gxr_overlay_submit_texture (overlay, n);
if (self->textures[en->i] != NULL)
{
g_object_unref (self->textures[en->i]);
self->textures[en->i] = NULL;
}
self->textures[en->i] = n;
cairo_surface_destroy (surface);
gxr_overlay_poll_event (overlay);
return TRUE;
}
static void
_press_cb (GxrOverlay *overlay,
GdkEventButton *event,
gpointer data)
{
(void) overlay;
Example *self = (Example*) data;
g_print ("press: %d %f %f (%d)\n",
event->button, event->x, event->y, event->time);
GMainLoop *loop = self->loop;
g_main_loop_quit (loop);
}
static void
_destroy_cb (GxrOverlay *overlay,
gpointer data)
{
(void) overlay;
Example *self = (Example*) data;
g_print ("destroy\n");
g_main_loop_quit (self->loop);
}
int main () {
Example ex = {
.loop = g_main_loop_new (NULL, FALSE),
.tex_count = 0,
.context = gxr_context_new (GXR_APP_OVERLAY, "Overlay Multi Stresstest", 1)
};
ExampleOverlayNum nums[OVERLAY_NUM];
for (int i = 0; i < OVERLAY_NUM; i++)
{
nums[i].example = &ex;
nums[i].i = i;
}
/* create openvr overlay */
float x_offset = 0;
for (int i = 0; i < OVERLAY_NUM; i++)
{
ex.textures[i] = NULL;
char key[16];
snprintf (key, 16, "test-%d", i);
ex.overlays[i] = gxr_overlay_new (ex.context, key);
if (ex.overlays[i] == NULL)
{
fprintf (stderr, "Overlay unavailable.\n");
return -1;
}
float diff = 0;
if (i > 0)
gxr_overlay_get_width_meters (ex.overlays[i-1], &diff);
x_offset += diff;
g_print ("Offset %f\n", x_offset);
graphene_point3d_t p = { .x = -2 + x_offset, .y = 0.5, .z = -2 };
gxr_overlay_set_translation (ex.overlays[i], &p);
if (!gxr_overlay_show (ex.overlays[i]))
return -1;
g_signal_connect (ex.overlays[i], "button-press-event", (GCallback) _press_cb, &ex);
g_signal_connect (ex.overlays[i], "destroy", (GCallback) _destroy_cb, &ex);
g_timeout_add (75, timeout_callback, &nums[i]);
}
g_main_loop_run (ex.loop);
g_main_loop_unref (ex.loop);
for (int i = 0; i < OVERLAY_NUM; i++)
{
g_object_unref (ex.overlays[i]);
g_object_unref (ex.textures[i]);
}
g_object_unref (ex.context);
return 0;
}
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