141 lines
3.3 KiB
C++
141 lines
3.3 KiB
C++
/*****************************************************************************\
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Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
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This file is licensed under the Snes9x License.
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For further information, consult the LICENSE file in the root directory.
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\*****************************************************************************/
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#include <cstdlib>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "glx_context.hpp"
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GTKGLXContext::GTKGLXContext()
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{
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display = NULL;
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context = NULL;
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version_major = -1;
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version_minor = -1;
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gladLoaderLoadGLX(nullptr, 0);
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}
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GTKGLXContext::~GTKGLXContext()
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{
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if (context)
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glXDestroyContext(display, context);
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}
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bool GTKGLXContext::attach(Display *dpy, Window xid)
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{
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GLXFBConfig *fbconfigs;
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int num_fbconfigs;
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int attribs[] = {
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GLX_DOUBLEBUFFER, True,
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GLX_X_RENDERABLE, True,
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GLX_RED_SIZE, 8,
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GLX_GREEN_SIZE, 8,
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GLX_BLUE_SIZE, 8,
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None
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};
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this->xid = xid;
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display = dpy;
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XWindowAttributes wa{};
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XGetWindowAttributes(display, xid, &wa);
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screen = XScreenNumberOfScreen(wa.screen);
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glXQueryVersion(display, &version_major, &version_minor);
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if (version_major < 2 && version_minor < 3)
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return false;
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fbconfigs = glXChooseFBConfig(display, screen, attribs, &num_fbconfigs);
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if (!fbconfigs || num_fbconfigs < 1)
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{
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printf("Couldn't match a GLX framebuffer config.\n");
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return false;
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}
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fbconfig = fbconfigs[0];
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free(fbconfigs);
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return true;
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}
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bool GTKGLXContext::create_context()
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{
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int context_attribs[] = {
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GLX_CONTEXT_PROFILE_MASK_ARB, GLX_CONTEXT_CORE_PROFILE_BIT_ARB,
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GLX_CONTEXT_MAJOR_VERSION_ARB, 3,
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GLX_CONTEXT_MINOR_VERSION_ARB, 3,
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None
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};
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const char *extensions = glXQueryExtensionsString(display, screen);
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XSetErrorHandler([](Display *dpy, XErrorEvent *event) -> int {
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printf("XError: type: %d code: %d\n", event->type, event->error_code);
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return X_OK;
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});
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if (strstr(extensions, "GLX_ARB_create_context"))
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context = glXCreateContextAttribsARB(display, fbconfig, NULL, True, context_attribs);
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if (!context)
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context = glXCreateNewContext(display, fbconfig, GLX_RGBA_TYPE, NULL, True);
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XSetErrorHandler(nullptr);
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if (!context)
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{
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printf("Couldn't create GLX context.\n");
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return false;
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}
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return true;
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}
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void GTKGLXContext::resize()
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{
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while (!ready())
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usleep(100);
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unsigned int width;
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unsigned int height;
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glXQueryDrawable(display, xid, GLX_WIDTH, &width);
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glXQueryDrawable(display, xid, GLX_HEIGHT, &height);
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this->width = width;
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this->height = height;
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make_current();
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}
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void GTKGLXContext::swap_buffers()
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{
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glXSwapBuffers(display, xid);
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}
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bool GTKGLXContext::ready()
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{
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return true;
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}
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void GTKGLXContext::make_current()
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{
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glXMakeCurrent(display, xid, context);
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}
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void GTKGLXContext::swap_interval(int frames)
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{
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if (GLAD_GLX_EXT_swap_control)
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glXSwapIntervalEXT(display, xid, frames);
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else if (GLAD_GLX_SGI_swap_control)
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glXSwapIntervalSGI(frames);
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#ifdef GLX_MESA_swap_control
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else if (GLAD_GLX_MESA_swap_control)
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glXSwapIntervalMESA(frames);
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#endif
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}
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