use OpenGL swap interval on Windows and X11
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@ -102,3 +102,12 @@ resize_dst(SWindowData *window_data, uint32_t width, uint32_t height) {
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window_data->dst_width = (uint32_t) (width * window_data->factor_width);
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window_data->dst_height = (uint32_t) (height * window_data->factor_height);
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}
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#if !defined(USE_OPENGL_API)
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//-------------------------------------
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void
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set_target_fps_aux() {
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}
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#endif
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@ -20,6 +20,7 @@ extern "C" {
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void calc_dst_factor(SWindowData *window_data, uint32_t width, uint32_t height);
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void resize_dst(SWindowData *window_data, uint32_t width, uint32_t height);
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void set_target_fps_aux();
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#if defined(__cplusplus)
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}
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@ -6,6 +6,7 @@
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double g_timer_frequency;
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double g_timer_resolution;
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double g_time_for_frame = 1.0 / 60.0;
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bool g_use_hardware_sync = false;
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//-------------------------------------
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extern uint64_t mfb_timer_tick(void);
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@ -20,6 +21,7 @@ mfb_set_target_fps(uint32_t fps) {
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else {
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g_time_for_frame = 1.0 / fps;
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}
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set_target_fps_aux();
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}
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//-------------------------------------
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@ -1,6 +1,7 @@
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#if defined(USE_OPENGL_API)
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#include "MiniFB_GL.h"
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#include "MiniFB_internal.h"
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#if defined(_WIN32) || defined(WIN32)
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#include <windows/WindowData_Win.h>
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#include <gl/gl.h>
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@ -19,6 +20,10 @@
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#define UseCleanUp(x)
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#endif
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extern double g_time_for_frame;
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extern bool g_use_hardware_sync;
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//-------------------------------------
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#if defined(_WIN32) || defined(WIN32)
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bool
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@ -59,6 +64,44 @@ setup_pixel_format(HDC hDC) {
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return true;
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}
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typedef BOOL (WINAPI * PFNWGLSWAPINTERVALEXTPROC)(int);
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typedef int (WINAPI * PFNWGLGETSWAPINTERVALEXTPROC)(void);
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PFNWGLSWAPINTERVALEXTPROC SwapIntervalEXT = 0x0;
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PFNWGLGETSWAPINTERVALEXTPROC GetSwapIntervalEXT = 0x0;
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#elif defined(linux)
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bool
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setup_pixel_format(SWindowData_X11 *window_data_x11) {
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GLint glxAttribs[] = {
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GLX_RGBA,
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GLX_DOUBLEBUFFER,
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GLX_DEPTH_SIZE, 24,
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GLX_STENCIL_SIZE, 8,
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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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GLX_DEPTH_SIZE, 24,
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GLX_STENCIL_SIZE, 8,
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GLX_SAMPLE_BUFFERS, 0,
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GLX_SAMPLES, 0,
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None
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};
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XVisualInfo* visualInfo = glXChooseVisual(window_data_x11->display, window_data_x11->screen, glxAttribs);
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if (visualInfo == 0) {
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fprintf(stderr, "Could not create correct visual window.\n");
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XCloseDisplay(window_data_x11->display);
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return false;
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}
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return true;
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}
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typedef void (*PFNGLXSWAPINTERVALEXTPROC)(Display*,GLXDrawable,int);
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PFNGLXSWAPINTERVALEXTPROC SwapIntervalEXT = 0x0;
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#endif
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//-------------------------------------
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@ -69,10 +112,15 @@ create_GL_context(SWindowData *window_data) {
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if (setup_pixel_format(window_data_win->hdc) == false)
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return false;
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window_data_win->hGLRC = wglCreateContext(window_data_win->hdc);
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wglMakeCurrent(window_data_win->hdc, window_data_win->hGLRC);
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init_GL(window_data);
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SwapIntervalEXT = (PFNWGLSWAPINTERVALEXTPROC) wglGetProcAddress("wglSwapIntervalEXT");
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GetSwapIntervalEXT = (PFNWGLGETSWAPINTERVALEXTPROC) wglGetProcAddress("wglGetSwapIntervalEXT");
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set_target_fps_aux();
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return true;
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#elif defined(linux)
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@ -89,26 +137,8 @@ create_GL_context(SWindowData *window_data) {
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//fprintf(stdout, "GLX version: %d.%d\n", majorGLX, minorGLX);
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}
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GLint glxAttribs[] = {
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GLX_RGBA,
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GLX_DOUBLEBUFFER,
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GLX_DEPTH_SIZE, 24,
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GLX_STENCIL_SIZE, 8,
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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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GLX_DEPTH_SIZE, 24,
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GLX_STENCIL_SIZE, 8,
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GLX_SAMPLE_BUFFERS, 0,
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GLX_SAMPLES, 0,
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None
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};
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XVisualInfo* visualInfo = glXChooseVisual(window_data_x11->display, window_data_x11->screen, glxAttribs);
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if (visualInfo == 0) {
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fprintf(stderr, "Could not create correct visual window.\n");
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XCloseDisplay(window_data_x11->display);
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if (setup_pixel_format(window_data_x11) == false)
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return false;
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}
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window_data_x11->context = glXCreateContext(window_data_x11->display, visualInfo, NULL, GL_TRUE);
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glXMakeCurrent(window_data_x11->display, window_data_x11->window, window_data_x11->context);
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@ -120,6 +150,9 @@ create_GL_context(SWindowData *window_data) {
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init_GL(window_data);
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SwapIntervalEXT = (PFNGLXSWAPINTERVALEXTPROC) getProcAddressGLX("glXSwapIntervalEXT");
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set_target_fps_aux();
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return true;
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#endif
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}
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@ -289,4 +322,47 @@ redraw_GL(SWindowData *window_data, const void *pixels) {
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#endif
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}
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//-------------------------------------
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void
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set_target_fps_aux() {
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// Assuming the monitor refresh rate is 60 hz
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int interval = (int) ((60.0 * g_time_for_frame) + 0.5);
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#if defined(_WIN32) || defined(WIN32)
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if (SwapIntervalEXT != 0x0) {
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bool success = SwapIntervalEXT(interval);
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if (GetSwapIntervalEXT != 0x0) {
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int currentInterval = GetSwapIntervalEXT();
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if (interval != currentInterval) {
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fprintf(stderr, "Cannot set target swap interval. Current swap interval is %d\n", currentInterval);
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}
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}
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else if (success == false) {
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fprintf(stderr, "Cannot set target swap interval.\n");
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}
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g_use_hardware_sync = true;
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}
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#elif defined(linux)
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#define kGLX_SWAP_INTERVAL_EXT 0x20F1
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#define kGLX_MAX_SWAP_INTERVAL_EXT 0x20F2
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if (SwapIntervalEXT != 0x0) {
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Display *dpy = glXGetCurrentDisplay();
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GLXDrawable drawable = glXGetCurrentDrawable();
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unsigned int currentInterval, maxInterval;
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SwapIntervalEXT(dpy, drawable, interval);
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glXQueryDrawable(dpy, drawable, kGLX_SWAP_INTERVAL_EXT, ¤tInterval);
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if (interval != currentInterval) {
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glXQueryDrawable(dpy, drawable, kGLX_MAX_SWAP_INTERVAL_EXT, &maxInterval);
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fprintf(stderr, "Cannot set target swap interval. Current swap interval is %d (max: %d)\n", currentInterval, maxInterval);
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}
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g_use_hardware_sync = true;
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}
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#endif
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}
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#endif
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@ -192,7 +192,7 @@ WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) {
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if(mfb_EnableNonClientDpiScaling)
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mfb_EnableNonClientDpiScaling(hWnd);
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return DefWindowProc(hWnd, message, wParam, lParam);;
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return DefWindowProc(hWnd, message, wParam, lParam);
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}
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// TODO
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@ -647,11 +647,10 @@ mfb_update_events(struct mfb_window *window) {
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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extern double g_time_for_frame;
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extern bool g_use_hardware_sync;
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bool
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mfb_wait_sync(struct mfb_window *window) {
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MSG msg;
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if (window == 0x0) {
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return false;
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}
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@ -662,6 +661,11 @@ mfb_wait_sync(struct mfb_window *window) {
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return false;
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}
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if(g_use_hardware_sync) {
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return true;
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}
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MSG msg;
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SWindowData_Win *window_data_win = (SWindowData_Win *) window_data->specific;
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double current;
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uint32_t millis = 1;
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@ -433,6 +433,7 @@ mfb_update_events(struct mfb_window *window) {
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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extern double g_time_for_frame;
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extern bool g_use_hardware_sync;
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bool
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mfb_wait_sync(struct mfb_window *window) {
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@ -446,6 +447,10 @@ mfb_wait_sync(struct mfb_window *window) {
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return false;
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}
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if(g_use_hardware_sync) {
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return true;
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}
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SWindowData_X11 *window_data_x11 = (SWindowData_X11 *) window_data->specific;
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XFlush(window_data_x11->display);
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XEvent event;
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