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/*
* Copyright © 2010-2011 Linaro Limited
*
* This file is part of the glmark2 OpenGL (ES) 2.0 benchmark.
*
* glmark2 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 3 of the License, or (at your option) any later
* version.
*
* glmark2 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
* glmark2. If not, see <http://www.gnu.org/licenses/>.
*
* Authors:
* Alexandros Frantzis (glmark2)
*/
#include "canvas-x11-egl.h"
#include "log.h"
#include "options.h"
#include <fstream>
#include <sstream>
/*********************
* Protected methods *
*********************/
XVisualInfo *
CanvasX11EGL::get_xvisualinfo()
{
XVisualInfo vis_tmpl;
XVisualInfo *vis_info;
int num_visuals;
EGLint vid;
if (!ensure_egl_config())
return 0;
if (!eglGetConfigAttrib(egl_display_, egl_config_,
EGL_NATIVE_VISUAL_ID, &vid))
{
Log::error("eglGetConfigAttrib() failed with error: %d\n",
eglGetError());
return 0;
}
/* The X window visual must match the EGL config */
vis_tmpl.visualid = vid;
vis_info = XGetVisualInfo(xdpy_, VisualIDMask, &vis_tmpl,
&num_visuals);
if (!vis_info) {
Log::error("couldn't get X visual\n");
return 0;
}
return vis_info;
}
bool
CanvasX11EGL::make_current()
{
if (!ensure_egl_surface())
return false;
if (egl_context_ == eglGetCurrentContext())
return true;
if (!eglMakeCurrent(egl_display_, egl_surface_, egl_surface_, egl_context_)) {
Log::error("Error: eglMakeCurrent failed with error %d\n", eglGetError());
return false;
}
if (!eglSwapInterval(egl_display_, 0))
Log::info("** Failed to set swap interval. Results may be bounded above by refresh rate.\n");
init_gl_extensions();
return true;
}
/*******************
* Private methods *
*******************/
bool
CanvasX11EGL::ensure_egl_display()
{
if (egl_display_)
return true;
egl_display_ = eglGetDisplay((EGLNativeDisplayType) xdpy_);
if (!egl_display_) {
Log::error("eglGetDisplay() failed with error: %d\n",
eglGetError());
return false;
}
if (!eglInitialize(egl_display_, NULL, NULL)) {
Log::error("eglInitialize() failed with error: %d\n",
eglGetError());
return false;
egl_display_ = 0;
}
return true;
}
bool
CanvasX11EGL::ensure_egl_config()
{
static const EGLint attribs[] = {
EGL_RED_SIZE, 1,
EGL_GREEN_SIZE, 1,
EGL_BLUE_SIZE, 1,
EGL_ALPHA_SIZE, 1,
EGL_DEPTH_SIZE, 1,
#ifdef USE_GLESv2
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
#elif USE_GL
EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
#endif
EGL_NONE
};
EGLint num_configs;
EGLint vid;
if (egl_config_)
return true;
if (!ensure_egl_display())
return false;
if (!eglChooseConfig(egl_display_, attribs, &egl_config_,
1, &num_configs))
{
Log::error("eglChooseConfig() failed with error: %d\n",
eglGetError());
return false;
}
if (!eglGetConfigAttrib(egl_display_, egl_config_,
EGL_NATIVE_VISUAL_ID, &vid))
{
Log::error("eglGetConfigAttrib() failed with error: %d\n",
eglGetError());
return false;
}
if (Options::show_debug) {
int buf, red, green, blue, alpha, depth, id, native_id;
eglGetConfigAttrib(egl_display_, egl_config_, EGL_CONFIG_ID, &id);
eglGetConfigAttrib(egl_display_, egl_config_, EGL_NATIVE_VISUAL_ID, &native_id);
eglGetConfigAttrib(egl_display_, egl_config_, EGL_BUFFER_SIZE, &buf);
eglGetConfigAttrib(egl_display_, egl_config_, EGL_RED_SIZE, &red);
eglGetConfigAttrib(egl_display_, egl_config_, EGL_GREEN_SIZE, &green);
eglGetConfigAttrib(egl_display_, egl_config_, EGL_BLUE_SIZE, &blue);
eglGetConfigAttrib(egl_display_, egl_config_, EGL_ALPHA_SIZE, &alpha);
eglGetConfigAttrib(egl_display_, egl_config_, EGL_DEPTH_SIZE, &depth);
Log::debug("EGL chosen config ID: 0x%x Native Visual ID: 0x%x\n"
" Buffer: %d bits\n"
" Red: %d bits\n"
" Green: %d bits\n"
" Blue: %d bits\n"
" Alpha: %d bits\n"
" Depth: %d bits\n",
id, native_id,
buf, red, green, blue, alpha, depth);
}
return true;
}
bool
CanvasX11EGL::ensure_egl_surface()
{
static const EGLint ctx_attribs[] = {
#ifdef USE_GLESv2
EGL_CONTEXT_CLIENT_VERSION, 2,
#endif
EGL_NONE
};
if (egl_surface_)
return true;
if (!ensure_egl_display())
return false;
#ifdef USE_GLESv2
eglBindAPI(EGL_OPENGL_ES_API);
#elif USE_GL
eglBindAPI(EGL_OPENGL_API);
#endif
egl_context_ = eglCreateContext(egl_display_, egl_config_,
EGL_NO_CONTEXT, ctx_attribs);
if (!egl_context_) {
Log::error("eglCreateContext() failed with error: %d\n",
eglGetError());
return false;
}
egl_surface_ = eglCreateWindowSurface(egl_display_, egl_config_,
(EGLNativeWindowType) xwin_,
NULL);
if (!egl_surface_) {
Log::error("eglCreateWindowSurface failed with error: %d\n",
eglGetError());
return false;
}
return true;
}
void
CanvasX11EGL::init_gl_extensions()
{
#if USE_GLESv2
/*
* Parse the extensions we care about from the extension string.
* Don't even bother to get function pointers until we know the
* extension is present.
*/
std::string extString;
const char* exts = reinterpret_cast<const char*>(glGetString(GL_EXTENSIONS));
if (exts) {
extString = exts;
}
if (extString.find("GL_OES_mapbuffer") != std::string::npos) {
GLExtensions::MapBuffer =
reinterpret_cast<PFNGLMAPBUFFEROESPROC>(eglGetProcAddress("glMapBufferOES"));
GLExtensions::UnmapBuffer =
reinterpret_cast<PFNGLUNMAPBUFFEROESPROC>(eglGetProcAddress("glUnmapBufferOES"));
}
#elif USE_GL
GLExtensions::MapBuffer = glMapBuffer;
GLExtensions::UnmapBuffer = glUnmapBuffer;
#endif
}
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