looking-glass/client/renderers/EGL/texture_buffer.h
Geoffrey McRae b4b4a37b2b [client] egl: switch to using GL_TEXTURE_EXTERNAL_OES for DMABUF
According to Erik @ NVidia the open source NVidia driver will not
create a EGLImage from a DMABUF if the target is not
GL_TEXTURE_EXTERNAL_OES. This change set converts the dmabuf texture
from GL_TEXTURE_2D to GL_TEXTURE_EXTERNAL_OES and at runtime performs a
global search & replace on fragment shaders as needed to remain
compatible, replacing `sampler2D` with `samplerExternalOES`.

Ref: https://github.com/NVIDIA/open-gpu-kernel-modules/discussions/243#discussioncomment-3283415
2023-03-09 09:20:01 +11:00

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C

/**
* Looking Glass
* Copyright © 2017-2022 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
*/
#pragma once
#include "texture.h"
#include "texture_util.h"
#include "common/locking.h"
#define EGL_TEX_BUFFER_MAX 2
typedef struct TextureBuffer
{
EGL_Texture base;
bool free;
int texCount;
GLuint tex[EGL_TEX_BUFFER_MAX];
EGL_TexBuffer buf[EGL_TEX_BUFFER_MAX];
int bufFree;
GLsync sync;
LG_Lock copyLock;
int bufIndex;
int rIndex;
}
TextureBuffer;
bool egl_texBufferInit(EGL_Texture ** texture_, EGL_TexType type,
EGLDisplay * display);
void egl_texBufferFree(EGL_Texture * texture_);
bool egl_texBufferSetup(EGL_Texture * texture_, const EGL_TexSetup * setup);
EGL_TexStatus egl_texBufferProcess(EGL_Texture * texture_);
EGL_TexStatus egl_texBufferGet(EGL_Texture * texture_, GLuint * tex);
EGL_TexStatus egl_texBufferBind(EGL_Texture * texture_);
bool egl_texBufferStreamInit(EGL_Texture ** texture_, EGL_TexType type,
EGLDisplay * display);
bool egl_texBufferStreamSetup(EGL_Texture * texture_,
const EGL_TexSetup * setup);
EGL_TexStatus egl_texBufferStreamProcess(EGL_Texture * texture_);
EGL_TexStatus egl_texBufferStreamGet(EGL_Texture * texture_, GLuint * tex);