LookingGlass/client/renderers/EGL/texture_framebuffer.c

133 lines
3.5 KiB
C

/**
* Looking Glass
* Copyright © 2017-2021 The Looking Glass Authors
* https://looking-glass.io
*
* 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 "texture.h"
#include <assert.h>
#include "texture_buffer.h"
#include "common/debug.h"
#include "common/KVMFR.h"
#include "common/rects.h"
struct TexDamage
{
int count;
FrameDamageRect rects[KVMFR_MAX_DAMAGE_RECTS];
};
typedef struct TexFB
{
TextureBuffer base;
struct TexDamage damage[EGL_TEX_BUFFER_MAX];
}
TexFB;
static bool eglTexFB_init(EGL_Texture ** texture, EGLDisplay * display)
{
TexFB * this = calloc(sizeof(*this), 1);
*texture = &this->base.base;
EGL_Texture * parent = &this->base.base;
if (!eglTexBuffer_stream_init(&parent, display))
{
free(this);
*texture = NULL;
return false;
}
for (int i = 0; i < EGL_TEX_BUFFER_MAX; ++i)
this->damage[i].count = -1;
return true;
}
static bool eglTexFB_update(EGL_Texture * texture, const EGL_TexUpdate * update)
{
TextureBuffer * parent = UPCAST(TextureBuffer, texture);
TexFB * this = UPCAST(TexFB , parent );
assert(update->type == EGL_TEXTYPE_FRAMEBUFFER);
LG_LOCK(parent->copyLock);
struct TexDamage * damage = this->damage + parent->bufIndex;
bool damageAll = !update->rects || update->rectCount == 0 || damage->count < 0 ||
damage->count + update->rectCount > KVMFR_MAX_DAMAGE_RECTS;
if (damageAll)
framebuffer_read(
update->frame,
parent->buf[parent->bufIndex].map,
parent->format.stride,
parent->format.height,
parent->format.width,
parent->format.bpp,
parent->format.stride
);
else
{
memcpy(damage->rects + damage->count, update->rects,
update->rectCount * sizeof(FrameDamageRect));
damage->count += update->rectCount;
rectsFramebufferToBuffer(
damage->rects,
damage->count,
parent->buf[parent->bufIndex].map,
parent->format.stride,
parent->format.height,
update->frame,
parent->format.stride
);
}
parent->buf[parent->bufIndex].updated = true;
for (int i = 0; i < EGL_TEX_BUFFER_MAX; ++i)
{
struct TexDamage * damage = this->damage + i;
if (i == parent->bufIndex)
damage->count = 0;
else if (update->rects && update->rectCount > 0 && damage->count >= 0 &&
damage->count + update->rectCount <= KVMFR_MAX_DAMAGE_RECTS)
{
memcpy(damage->rects + damage->count, update->rects,
update->rectCount * sizeof(FrameDamageRect));
damage->count += update->rectCount;
}
else
damage->count = -1;
}
LG_UNLOCK(parent->copyLock);
return true;
}
EGL_TextureOps EGL_TextureFrameBuffer =
{
.init = eglTexFB_init,
.free = eglTexBuffer_free,
.setup = eglTexBuffer_stream_setup,
.update = eglTexFB_update,
.process = eglTexBuffer_stream_process,
.bind = eglTexBuffer_stream_bind
};