mirror of
https://github.com/Genymobile/scrcpy
synced 2024-11-17 03:25:38 +00:00
57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
|
#include "opengl.h"
|
||
|
|
|
||
|
|
#include <assert.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include "SDL2/SDL.h"
|
||
|
|
|
||
|
|
void
|
||
|
|
sc_opengl_init(struct sc_opengl *gl) {
|
||
|
|
gl->GetString = SDL_GL_GetProcAddress("glGetString");
|
||
|
|
assert(gl->GetString);
|
||
|
|
|
||
|
|
gl->TexParameterf = SDL_GL_GetProcAddress("glTexParameterf");
|
||
|
|
assert(gl->TexParameterf);
|
||
|
|
|
||
|
|
gl->TexParameteri = SDL_GL_GetProcAddress("glTexParameteri");
|
||
|
|
assert(gl->TexParameteri);
|
||
|
|
|
||
|
|
// optional
|
||
|
|
gl->GenerateMipmap = SDL_GL_GetProcAddress("glGenerateMipmap");
|
||
|
|
|
||
|
|
const char *version = (const char *) gl->GetString(GL_VERSION);
|
||
|
|
assert(version);
|
||
|
|
gl->version = version;
|
||
|
|
|
||
|
|
#define OPENGL_ES_PREFIX "OpenGL ES "
|
||
|
|
/* starts with "OpenGL ES " */
|
||
|
|
gl->is_opengles = !strncmp(gl->version, OPENGL_ES_PREFIX,
|
||
|
|
sizeof(OPENGL_ES_PREFIX) - 1);
|
||
|
|
if (gl->is_opengles) {
|
||
|
|
/* skip the prefix */
|
||
|
|
version += sizeof(PREFIX) - 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
int r = sscanf(version, "%d.%d", &gl->version_major, &gl->version_minor);
|
||
|
|
if (r != 2) {
|
||
|
|
// failed to parse the version
|
||
|
|
gl->version_major = 0;
|
||
|
|
gl->version_minor = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
bool
|
||
|
|
sc_opengl_version_at_least(struct sc_opengl *gl,
|
||
|
|
int minver_major, int minver_minor,
|
||
|
|
int minver_es_major, int minver_es_minor)
|
||
|
|
{
|
||
|
|
if (gl->is_opengles) {
|
||
|
|
return gl->version_major > minver_es_major
|
||
|
|
|| (gl->version_major == minver_es_major
|
||
|
|
&& gl->version_minor >= minver_es_minor);
|
||
|
|
}
|
||
|
|
|
||
|
|
return gl->version_major > minver_major
|
||
|
|
|| (gl->version_major == minver_major
|
||
|
|
&& gl->version_minor >= minver_minor);
|
||
|
|
}
|