LookingGlass/client/renderers/EGL/texture_util.h

75 lines
2.4 KiB
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 "egltypes.h"
//typedef struct EGL_TexSetup EGL_TexSetup;
typedef struct EGL_TexFormat
{
EGL_PixelFormat pixFmt;
size_t bpp;
GLenum format;
GLenum intFormat;
GLenum dataType;
unsigned int fourcc;
size_t bufferSize;
size_t width , height;
size_t stride, pitch;
}
EGL_TexFormat;
typedef struct EGL_TexBuffer
{
size_t size;
GLuint pbo;
void * map;
bool updated;
}
EGL_TexBuffer;
bool egl_texUtilGetFormat(const EGL_TexSetup * setup, EGL_TexFormat * fmt);
bool egl_texUtilGenBuffers(const EGL_TexFormat * fmt, EGL_TexBuffer * buffers,
int count);
void egl_texUtilFreeBuffers(EGL_TexBuffer * buffers, int count);
bool egl_texUtilMapBuffer(EGL_TexBuffer * buffer);
void egl_texUtilUnmapBuffer(EGL_TexBuffer * buffer);
/**
* the following comes from drm_fourcc.h and is included here to avoid the
* external dependency for the few simple defines we need
*/
#define fourcc_code(a, b, c, d) ((uint32_t)(a) | ((uint32_t)(b) << 8) | \
((uint32_t)(c) << 16) | ((uint32_t)(d) << 24))
#define DRM_FORMAT_ARGB8888 fourcc_code('A', 'R', '2', '4')
#define DRM_FORMAT_ABGR8888 fourcc_code('A', 'B', '2', '4')
#define DRM_FORMAT_BGRA1010102 fourcc_code('B', 'A', '3', '0')
#define DRM_FORMAT_ABGR16161616F fourcc_code('A', 'B', '4', 'H')
#define DRM_FORMAT_MOD_VENDOR_NONE 0
#define fourcc_mod_code(vendor, val) \
((((uint64_t)DRM_FORMAT_MOD_VENDOR_## vendor) << 56) | \
((val) & 0x00ffffffffffffffULL))
#define DRM_FORMAT_MOD_LINEAR fourcc_mod_code(NONE, 0)