mirror of
https://github.com/gnif/LookingGlass.git
synced 2025-10-14 19:38:10 +00:00
[client] use cmake to generate renderers/fonts/clipboards headers/code
This is in preperation of cmake options to enable/disable various functionallity.
This commit is contained in:
Geoffrey McRae
267
client/renderers/EGL/texture.c
Normal file
267
client/renderers/EGL/texture.c
Normal file
@@ -0,0 +1,267 @@
|
||||
/*
|
||||
Looking Glass - KVM FrameRelay (KVMFR) Client
|
||||
Copyright (C) 2017-2019 Geoffrey McRae <geoff@hostfission.com>
|
||||
https://looking-glass.hostfission.com
|
||||
|
||||
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 "debug.h"
|
||||
#include "utils.h"
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <stdio.h>
|
||||
|
||||
#include <SDL2/SDL_egl.h>
|
||||
|
||||
struct EGL_Texture
|
||||
{
|
||||
enum EGL_PixelFormat pixFmt;
|
||||
size_t width, height;
|
||||
bool streaming;
|
||||
|
||||
int textureCount;
|
||||
GLuint textures[3];
|
||||
GLuint samplers[3];
|
||||
size_t planes[3][3];
|
||||
GLintptr offsets[3];
|
||||
GLenum intFormat;
|
||||
GLenum format;
|
||||
GLenum dataType;
|
||||
|
||||
bool hasPBO;
|
||||
GLuint pbo[2];
|
||||
int pboIndex;
|
||||
bool needsUpdate;
|
||||
size_t pboBufferSize;
|
||||
};
|
||||
|
||||
bool egl_texture_init(EGL_Texture ** texture)
|
||||
{
|
||||
*texture = (EGL_Texture *)malloc(sizeof(EGL_Texture));
|
||||
if (!*texture)
|
||||
{
|
||||
DEBUG_ERROR("Failed to malloc EGL_Texture");
|
||||
return false;
|
||||
}
|
||||
|
||||
memset(*texture, 0, sizeof(EGL_Texture));
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void egl_texture_free(EGL_Texture ** texture)
|
||||
{
|
||||
if (!*texture)
|
||||
return;
|
||||
|
||||
if ((*texture)->textureCount > 0)
|
||||
{
|
||||
glDeleteTextures((*texture)->textureCount, (*texture)->textures);
|
||||
glDeleteSamplers((*texture)->textureCount, (*texture)->samplers);
|
||||
}
|
||||
|
||||
if ((*texture)->hasPBO)
|
||||
glDeleteBuffers(2, (*texture)->pbo);
|
||||
|
||||
free(*texture);
|
||||
*texture = NULL;
|
||||
}
|
||||
|
||||
bool egl_texture_setup(EGL_Texture * texture, enum EGL_PixelFormat pixFmt, size_t width, size_t height, size_t stride, bool streaming)
|
||||
{
|
||||
int textureCount;
|
||||
|
||||
texture->pixFmt = pixFmt;
|
||||
texture->width = width;
|
||||
texture->height = height;
|
||||
texture->streaming = streaming;
|
||||
|
||||
switch(pixFmt)
|
||||
{
|
||||
case EGL_PF_BGRA:
|
||||
textureCount = 1;
|
||||
texture->format = GL_BGRA;
|
||||
texture->planes[0][0] = width;
|
||||
texture->planes[0][1] = height;
|
||||
texture->planes[0][2] = stride / 4;
|
||||
texture->offsets[0] = 0;
|
||||
texture->intFormat = GL_BGRA;
|
||||
texture->dataType = GL_UNSIGNED_BYTE;
|
||||
texture->pboBufferSize = height * stride;
|
||||
break;
|
||||
|
||||
case EGL_PF_RGBA:
|
||||
textureCount = 1;
|
||||
texture->format = GL_RGBA;
|
||||
texture->planes[0][0] = width;
|
||||
texture->planes[0][1] = height;
|
||||
texture->planes[0][2] = stride / 4;
|
||||
texture->offsets[0] = 0;
|
||||
texture->intFormat = GL_BGRA;
|
||||
texture->dataType = GL_UNSIGNED_BYTE;
|
||||
texture->pboBufferSize = height * stride;
|
||||
break;
|
||||
|
||||
case EGL_PF_RGBA10:
|
||||
textureCount = 1;
|
||||
texture->format = GL_RGBA;
|
||||
texture->planes[0][0] = width;
|
||||
texture->planes[0][1] = height;
|
||||
texture->planes[0][2] = stride / 4;
|
||||
texture->offsets[0] = 0;
|
||||
texture->intFormat = GL_RGB10_A2;
|
||||
texture->dataType = GL_UNSIGNED_INT_2_10_10_10_REV;
|
||||
texture->pboBufferSize = height * stride;
|
||||
break;
|
||||
|
||||
case EGL_PF_YUV420:
|
||||
textureCount = 3;
|
||||
texture->format = GL_RED;
|
||||
texture->planes[0][0] = width;
|
||||
texture->planes[0][1] = height;
|
||||
texture->planes[0][2] = stride;
|
||||
texture->planes[1][0] = width / 2;
|
||||
texture->planes[1][1] = height / 2;
|
||||
texture->planes[1][2] = stride / 2;
|
||||
texture->planes[2][0] = width / 2;
|
||||
texture->planes[2][1] = height / 2;
|
||||
texture->planes[2][2] = stride / 2;
|
||||
texture->offsets[0] = 0;
|
||||
texture->offsets[1] = stride * height;
|
||||
texture->offsets[2] = texture->offsets[1] + (texture->offsets[1] / 4);
|
||||
texture->dataType = GL_UNSIGNED_BYTE;
|
||||
texture->pboBufferSize = texture->offsets[2] + (texture->offsets[1] / 4);
|
||||
break;
|
||||
|
||||
default:
|
||||
DEBUG_ERROR("Unsupported pixel format");
|
||||
return false;
|
||||
}
|
||||
|
||||
if (textureCount > texture->textureCount)
|
||||
{
|
||||
if (texture->textureCount > 0)
|
||||
{
|
||||
glDeleteTextures(texture->textureCount, texture->textures);
|
||||
glDeleteSamplers(texture->textureCount, texture->samplers);
|
||||
}
|
||||
|
||||
texture->textureCount = textureCount;
|
||||
glGenTextures(texture->textureCount, texture->textures);
|
||||
glGenSamplers(texture->textureCount, texture->samplers);
|
||||
}
|
||||
|
||||
for(int i = 0; i < textureCount; ++i)
|
||||
{
|
||||
glSamplerParameteri(texture->samplers[i], GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
||||
glSamplerParameteri(texture->samplers[i], GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
||||
glSamplerParameteri(texture->samplers[i], GL_TEXTURE_WRAP_S , GL_CLAMP_TO_EDGE);
|
||||
glSamplerParameteri(texture->samplers[i], GL_TEXTURE_WRAP_T , GL_CLAMP_TO_EDGE);
|
||||
|
||||
glBindTexture(GL_TEXTURE_2D, texture->textures[i]);
|
||||
glTexImage2D(GL_TEXTURE_2D, 0, texture->intFormat, texture->planes[i][0], texture->planes[i][1],
|
||||
0, texture->format, texture->dataType, NULL);
|
||||
}
|
||||
glBindTexture(GL_TEXTURE_2D, 0);
|
||||
|
||||
if (streaming)
|
||||
{
|
||||
if (!texture->hasPBO)
|
||||
{
|
||||
glGenBuffers(2, texture->pbo);
|
||||
texture->hasPBO = true;
|
||||
}
|
||||
|
||||
for(int i = 0; i < 2; ++i)
|
||||
{
|
||||
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, texture->pbo[i]);
|
||||
glBufferData(
|
||||
GL_PIXEL_UNPACK_BUFFER,
|
||||
height * stride,
|
||||
NULL,
|
||||
GL_DYNAMIC_DRAW
|
||||
);
|
||||
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
|
||||
}
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool egl_texture_update(EGL_Texture * texture, const uint8_t * buffer)
|
||||
{
|
||||
if (texture->streaming)
|
||||
{
|
||||
if (texture->needsUpdate)
|
||||
{
|
||||
DEBUG_ERROR("Previous frame was not consumed");
|
||||
return false;
|
||||
}
|
||||
|
||||
if (++texture->pboIndex == 2)
|
||||
texture->pboIndex = 0;
|
||||
|
||||
/* initiate the data upload */
|
||||
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, texture->pbo[texture->pboIndex]);
|
||||
glBufferSubData(GL_PIXEL_UNPACK_BUFFER, 0, texture->pboBufferSize, buffer);
|
||||
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
|
||||
texture->needsUpdate = true;
|
||||
}
|
||||
else
|
||||
{
|
||||
for(int i = 0; i < texture->textureCount; ++i)
|
||||
{
|
||||
glBindTexture(GL_TEXTURE_2D, texture->textures[i]);
|
||||
glPixelStorei(GL_UNPACK_ROW_LENGTH, texture->planes[i][0]);
|
||||
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, texture->planes[i][0], texture->planes[i][1],
|
||||
texture->format, texture->dataType, buffer + texture->offsets[i]);
|
||||
}
|
||||
glBindTexture(GL_TEXTURE_2D, 0);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
void egl_texture_bind(EGL_Texture * texture)
|
||||
{
|
||||
if (texture->streaming && texture->needsUpdate)
|
||||
{
|
||||
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, texture->pbo[texture->pboIndex]);
|
||||
for(int i = 0; i < texture->textureCount; ++i)
|
||||
{
|
||||
glBindTexture(GL_TEXTURE_2D, texture->textures[i]);
|
||||
glPixelStorei(GL_UNPACK_ROW_LENGTH, texture->planes[i][2]);
|
||||
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, texture->planes[i][0], texture->planes[i][1],
|
||||
texture->format, texture->dataType, (const void *)texture->offsets[i]);
|
||||
}
|
||||
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, 0);
|
||||
glBindTexture(GL_TEXTURE_2D, 0);
|
||||
|
||||
texture->needsUpdate = false;
|
||||
}
|
||||
|
||||
for(int i = 0; i < texture->textureCount; ++i)
|
||||
{
|
||||
glActiveTexture(GL_TEXTURE0 + i);
|
||||
glBindTexture(GL_TEXTURE_2D, texture->textures[i]);
|
||||
glBindSampler(i, texture->samplers[i]);
|
||||
}
|
||||
}
|
||||
|
||||
int egl_texture_count(EGL_Texture * texture)
|
||||
{
|
||||
return texture->textureCount;
|
||||
}
|
||||
Reference in New Issue
Block a user