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/*
* gxr
* Copyright 2018 Collabora Ltd.
* Author: Lubosz Sarnecki <lubosz.sarnecki@collabora.com>
* SPDX-License-Identifier: MIT
*/
#include <glib.h>
#include <gdk/gdk.h>
#include <amdgpu_drm.h>
#include <amdgpu.h>
#include <fcntl.h>
#include "gxr.h"
#include "dmabuf_content.h"
static GulkanTexture *texture;
static gboolean
timeout_callback (gpointer data)
{
GxrOverlay *overlay = (GxrOverlay*) data;
gxr_overlay_poll_event (overlay);
return TRUE;
}
static void*
allocate_dmabuf_amd (gsize size, int *fd)
{
amdgpu_device_handle amd_dev;
amdgpu_bo_handle amd_bo;
/* use render node to avoid needing to authenticate: */
int dev_fd = open ("/dev/dri/renderD128", 02, 0);
uint32_t major_version;
uint32_t minor_version;
int ret = amdgpu_device_initialize (dev_fd,
&major_version,
&minor_version,
&amd_dev);
if (ret < 0)
{
g_printerr ("Could not create amdgpu device: %s\n", strerror (-ret));
return NULL;
}
g_print ("Initialized amdgpu drm device with fd %d. Version %d.%d\n",
dev_fd, major_version, minor_version);
struct amdgpu_bo_alloc_request alloc_buffer =
{
.alloc_size = (uint64_t) size,
.preferred_heap = AMDGPU_GEM_DOMAIN_GTT,
};
ret = amdgpu_bo_alloc (amd_dev, &alloc_buffer, &amd_bo);
if (ret < 0)
{
g_printerr ("amdgpu_bo_alloc failed: %s\n", strerror(-ret));
return NULL;
}
uint32_t shared_handle;
ret = amdgpu_bo_export (amd_bo,
amdgpu_bo_handle_type_dma_buf_fd,
&shared_handle);
if (ret < 0)
{
g_printerr ("amdgpu_bo_export failed: %s\n", strerror (-ret));
return NULL;
}
*fd = (int) shared_handle;
void *cpu_buffer;
ret = amdgpu_bo_cpu_map (amd_bo, &cpu_buffer);
if (ret < 0)
{
g_printerr ("amdgpu_bo_cpu_map failed: %s\n", strerror (-ret));
return NULL;
}
return cpu_buffer;
}
static void
_press_cb (GxrOverlay *overlay,
GdkEventButton *event,
gpointer data)
{
(void) overlay;
g_print ("press: %d %f %f (%d)\n",
event->button, event->x, event->y, event->time);
GMainLoop *loop = (GMainLoop*) data;
g_main_loop_quit (loop);
}
static void
_show_cb (GxrOverlay *overlay,
gpointer data)
{
(void) data;
g_print ("show\n");
/* skip rendering if the overlay isn't available or visible */
gboolean is_invisible = !gxr_overlay_is_visible (overlay) &&
!gxr_overlay_thumbnail_is_visible (overlay);
if (is_invisible)
return;
gxr_overlay_submit_texture (overlay, texture);
}
static void
_destroy_cb (GxrOverlay *overlay,
gpointer data)
{
(void) overlay;
g_print ("destroy\n");
GMainLoop *loop = (GMainLoop*) data;
g_main_loop_quit (loop);
}
#define ALIGN(_v, _d) (((_v) + ((_d) - 1)) & ~((_d) - 1))
int
main ()
{
GMainLoop *loop = g_main_loop_new (NULL, FALSE);
/* create dmabuf */
uint32_t width = 512;
uint32_t height = 512;
int fd = -1;
guint stride = (guint) ALIGN ((int)width, 32) * 4;
gsize size = stride * height;
char* map = (char*) allocate_dmabuf_amd (size, &fd);
dma_buf_fill (map, width, height, stride);
GxrContext *context = gxr_context_new (GXR_APP_OVERLAY, "Overlay Dma-Buf", 1);
GulkanClient *client = gxr_context_get_gulkan (context);
VkExtent2D extent = { width, height };
texture = gulkan_texture_new_from_dmabuf (client, fd, extent,
VK_FORMAT_B8G8R8A8_UNORM);
if (texture == NULL)
{
g_printerr ("Unable to initialize vulkan dmabuf texture.\n");
return -1;
}
if (!gulkan_texture_transfer_layout (texture,
VK_IMAGE_LAYOUT_UNDEFINED,
VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL))
{
g_printerr ("Unable to transfer layout.\n");
return -1;
}
GxrOverlay *overlay = gxr_overlay_new (context, "vulkan.dmabuf");
if (!overlay)
{
g_printerr ("Overlay unavailable.\n");
return -1;
}
g_signal_connect (overlay, "button-press-event", (GCallback) _press_cb, loop);
g_signal_connect (overlay, "show", (GCallback) _show_cb, NULL);
g_signal_connect (overlay, "destroy", (GCallback) _destroy_cb, loop);
g_timeout_add (20, timeout_callback, overlay);
g_main_loop_run (loop);
g_main_loop_unref (loop);
g_print ("bye\n");
g_object_unref (overlay);
g_object_unref (texture);
g_object_unref (context);
return 0;
}
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