mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-12-26 13:41:07 +00:00
116 lines
3.3 KiB
C
116 lines
3.3 KiB
C
/* gskglattachmentstate.c
|
|
*
|
|
* Copyright 2020 Christian Hergert <chergert@redhat.com>
|
|
*
|
|
* This file is free software; you can redistribute it and/or modify it under
|
|
* the terms of the GNU Lesser General Public License as published by the Free
|
|
* Software Foundation; either version 2.1 of the License, or (at your option)
|
|
* any later version.
|
|
*
|
|
* This file 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 Lesser General Public
|
|
* License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* SPDX-License-Identifier: LGPL-2.1-or-later
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include "gskglattachmentstateprivate.h"
|
|
|
|
GskGLAttachmentState *
|
|
gsk_gl_attachment_state_new (void)
|
|
{
|
|
GskGLAttachmentState *self;
|
|
|
|
self = g_atomic_rc_box_new0 (GskGLAttachmentState);
|
|
|
|
self->fbo.changed = FALSE;
|
|
self->fbo.id = 0;
|
|
self->n_changed = 0;
|
|
|
|
/* Initialize textures, assume we are 2D by default since it
|
|
* doesn't really matter until we bind something other than
|
|
* GL_TEXTURE0 to it anyway.
|
|
*/
|
|
for (guint i = 0; i < G_N_ELEMENTS (self->textures); i++)
|
|
{
|
|
self->textures[i].target = GL_TEXTURE_2D;
|
|
self->textures[i].texture = GL_TEXTURE0;
|
|
self->textures[i].id = 0;
|
|
self->textures[i].changed = FALSE;
|
|
self->textures[i].initial = TRUE;
|
|
self->textures[i].sampler = sampler_index (GL_LINEAR, GL_LINEAR);
|
|
}
|
|
|
|
return self;
|
|
}
|
|
|
|
GskGLAttachmentState *
|
|
gsk_gl_attachment_state_ref (GskGLAttachmentState *self)
|
|
{
|
|
return g_atomic_rc_box_acquire (self);
|
|
}
|
|
|
|
void
|
|
gsk_gl_attachment_state_unref (GskGLAttachmentState *self)
|
|
{
|
|
g_atomic_rc_box_release (self);
|
|
}
|
|
|
|
void
|
|
gsk_gl_attachment_state_bind_texture (GskGLAttachmentState *self,
|
|
GLenum target,
|
|
GLenum texture,
|
|
guint id,
|
|
GLint min_filter,
|
|
GLint mag_filter)
|
|
{
|
|
GskGLBindTexture *attach;
|
|
unsigned int sampler;
|
|
|
|
g_assert (self != NULL);
|
|
g_assert (target == GL_TEXTURE_1D ||
|
|
target == GL_TEXTURE_2D ||
|
|
target == GL_TEXTURE_3D);
|
|
g_assert (texture >= GL_TEXTURE0 && texture <= GL_TEXTURE16);
|
|
g_assert (texture - GL_TEXTURE0 < G_N_ELEMENTS (self->textures));
|
|
|
|
attach = &self->textures[texture - GL_TEXTURE0];
|
|
|
|
sampler = sampler_index (min_filter, mag_filter);
|
|
|
|
if (attach->target != target || attach->texture != texture || attach->id != id ||
|
|
attach->sampler != sampler)
|
|
{
|
|
attach->target = target;
|
|
attach->texture = texture;
|
|
attach->id = id;
|
|
attach->initial = FALSE;
|
|
attach->sampler = sampler;
|
|
|
|
if (attach->changed == FALSE)
|
|
{
|
|
attach->changed = TRUE;
|
|
self->n_changed++;
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
gsk_gl_attachment_state_bind_framebuffer (GskGLAttachmentState *self,
|
|
guint id)
|
|
{
|
|
g_assert (self != NULL);
|
|
|
|
if (self->fbo.id != id)
|
|
{
|
|
self->fbo.id = id;
|
|
self->fbo.changed = TRUE;
|
|
}
|
|
}
|