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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2017 Red Hat
* Copyright (c) 2018 DisplayLink (UK) Ltd.
*
* 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 "config.h"
#define GL_GLEXT_PROTOTYPES
#include "backends/native/meta-renderer-native-gles3.h"
#include <GLES3/gl3.h>
#include <drm_fourcc.h>
#include <errno.h>
#include <gio/gio.h>
#include <string.h>
#include "backends/meta-egl-ext.h"
#include "backends/meta-gles3.h"
#include "backends/meta-gles3-table.h"
/*
* GL/gl.h being included may conflit with gl3.h on some architectures.
* Make sure that hasn't happened on any architecture.
*/
#ifdef GL_VERSION_1_1
#error "Somehow included OpenGL headers when we shouldn't have"
#endif
static void
paint_egl_image (MetaGles3 *gles3,
EGLImageKHR egl_image,
int width,
int height)
{
GLuint texture;
GLuint framebuffer;
meta_gles3_clear_error (gles3);
GLBAS (gles3, glGenFramebuffers, (1, &framebuffer));
GLBAS (gles3, glBindFramebuffer, (GL_READ_FRAMEBUFFER, framebuffer));
GLBAS (gles3, glActiveTexture, (GL_TEXTURE0));
GLBAS (gles3, glGenTextures, (1, &texture));
GLBAS (gles3, glBindTexture, (GL_TEXTURE_2D, texture));
GLEXT (gles3, glEGLImageTargetTexture2DOES, (GL_TEXTURE_2D, egl_image));
GLBAS (gles3, glTexParameteri, (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
GL_NEAREST));
GLBAS (gles3, glTexParameteri, (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
GL_NEAREST));
GLBAS (gles3, glTexParameteri, (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,
GL_CLAMP_TO_EDGE));
GLBAS (gles3, glTexParameteri, (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,
GL_CLAMP_TO_EDGE));
GLBAS (gles3, glTexParameteri, (GL_TEXTURE_2D, GL_TEXTURE_WRAP_R_OES,
GL_CLAMP_TO_EDGE));
GLBAS (gles3, glFramebufferTexture2D, (GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D, texture, 0));
GLBAS (gles3, glBindFramebuffer, (GL_READ_FRAMEBUFFER, framebuffer));
GLBAS (gles3, glBlitFramebuffer, (0, height, width, 0,
0, 0, width, height,
GL_COLOR_BUFFER_BIT,
GL_NEAREST));
}
gboolean
meta_renderer_native_gles3_blit_shared_bo (MetaEgl *egl,
MetaGles3 *gles3,
EGLDisplay egl_display,
EGLContext egl_context,
EGLSurface egl_surface,
struct gbm_bo *shared_bo,
GError **error)
{
int shared_bo_fd;
unsigned int width;
unsigned int height;
uint32_t i, n_planes;
uint32_t strides[4] = { 0 };
uint32_t offsets[4] = { 0 };
uint64_t modifiers[4] = { 0 };
int fds[4] = { -1, -1, -1, -1 };
uint32_t format;
EGLImageKHR egl_image;
gboolean use_modifiers;
shared_bo_fd = gbm_bo_get_fd (shared_bo);
if (shared_bo_fd < 0)
{
g_set_error (error, G_IO_ERROR, G_IO_ERROR_FAILED,
"Failed to export gbm_bo: %s", strerror (errno));
return FALSE;
}
width = gbm_bo_get_width (shared_bo);
height = gbm_bo_get_height (shared_bo);
format = gbm_bo_get_format (shared_bo);
n_planes = gbm_bo_get_plane_count (shared_bo);
for (i = 0; i < n_planes; i++)
{
strides[i] = gbm_bo_get_stride_for_plane (shared_bo, i);
offsets[i] = gbm_bo_get_offset (shared_bo, i);
modifiers[i] = gbm_bo_get_modifier (shared_bo);
fds[i] = shared_bo_fd;
}
/* Workaround for https://gitlab.gnome.org/GNOME/mutter/issues/18 */
if (modifiers[0] == DRM_FORMAT_MOD_LINEAR ||
modifiers[0] == DRM_FORMAT_MOD_INVALID)
use_modifiers = FALSE;
else
use_modifiers = TRUE;
egl_image = meta_egl_create_dmabuf_image (egl,
egl_display,
width,
height,
format,
n_planes,
fds,
strides,
offsets,
use_modifiers ? modifiers : NULL,
error);
close (shared_bo_fd);
if (!egl_image)
return FALSE;
paint_egl_image (gles3, egl_image, width, height);
meta_egl_destroy_image (egl, egl_display, egl_image, NULL);
return TRUE;
}
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