117 lines
3.3 KiB
C
117 lines
3.3 KiB
C
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/* gskglattachmentstate.c
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*
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* Copyright 2020 Christian Hergert <chergert@redhat.com>
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*
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* This file is free software; you can redistribute it and/or modify it under
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* the terms of the GNU Lesser General Public License as published by the Free
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* Software Foundation; either version 2.1 of the License, or (at your option)
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* any later version.
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*
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* This file is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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* License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*/
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#include "config.h"
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#include "gskglattachmentstateprivate.h"
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GskGLAttachmentState *
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gsk_gl_attachment_state_new (void)
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{
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GskGLAttachmentState *self;
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self = g_atomic_rc_box_new0 (GskGLAttachmentState);
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self->fbo.changed = FALSE;
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self->fbo.id = 0;
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self->n_changed = 0;
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/* Initialize textures, assume we are 2D by default since it
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* doesn't really matter until we bind something other than
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* GL_TEXTURE0 to it anyway.
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*/
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for (guint i = 0; i < G_N_ELEMENTS (self->textures); i++)
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{
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self->textures[i].target = GL_TEXTURE_2D;
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self->textures[i].texture = GL_TEXTURE0;
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self->textures[i].id = 0;
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self->textures[i].changed = FALSE;
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self->textures[i].initial = TRUE;
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self->textures[i].sampler = sampler_index (GL_LINEAR, GL_LINEAR);
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}
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return self;
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}
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GskGLAttachmentState *
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gsk_gl_attachment_state_ref (GskGLAttachmentState *self)
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{
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return g_atomic_rc_box_acquire (self);
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}
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void
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gsk_gl_attachment_state_unref (GskGLAttachmentState *self)
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{
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g_atomic_rc_box_release (self);
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}
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void
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gsk_gl_attachment_state_bind_texture (GskGLAttachmentState *self,
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GLenum target,
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GLenum texture,
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guint id,
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GLint min_filter,
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GLint mag_filter)
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{
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GskGLBindTexture *attach;
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unsigned int sampler;
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g_assert (self != NULL);
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g_assert (target == GL_TEXTURE_1D ||
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target == GL_TEXTURE_2D ||
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target == GL_TEXTURE_3D ||
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target == GL_TEXTURE_EXTERNAL_OES);
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g_assert (texture >= GL_TEXTURE0 && texture <= GL_TEXTURE16);
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g_assert (texture - GL_TEXTURE0 < G_N_ELEMENTS (self->textures));
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attach = &self->textures[texture - GL_TEXTURE0];
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sampler = sampler_index (min_filter, mag_filter);
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if (attach->target != target || attach->texture != texture || attach->id != id ||
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attach->sampler != sampler)
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{
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attach->target = target;
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attach->texture = texture;
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attach->id = id;
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attach->initial = FALSE;
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attach->sampler = sampler;
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if (attach->changed == FALSE)
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{
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attach->changed = TRUE;
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self->n_changed++;
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}
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}
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}
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void
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gsk_gl_attachment_state_bind_framebuffer (GskGLAttachmentState *self,
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guint id)
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{
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g_assert (self != NULL);
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if (self->fbo.id != id)
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{
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self->fbo.id = id;
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self->fbo.changed = TRUE;
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}
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}
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