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Merge pull request #5564 from vanfanel/master

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Add experimental way to make max_swapchain=2 work Rpi with GLES on dispmanx
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Jean-André Santoni 2017-10-19 16:53:27 +07:00 committed by GitHub
commit 628acf5296
1 changed files with 9 additions and 0 deletions
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9
gfx/drivers_context/vc_egl_ctx.c
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@ -311,6 +311,15 @@ static bool gfx_ctx_vc_set_video_mode(void *data,
frontend_driver_install_signal_handler();
gfx_ctx_vc_set_swap_interval(&vc->egl, vc->egl.interval);
/* If we set this env variable, Broadcom's EGL implementation will block
* on vsync with a double buffer when we call eglSwapBuffers. Less input lag! */
if (video_info->max_swapchain_images <= 2)
setenv("V3D_DOUBLE_BUFFER", "1", 1);
else
setenv("V3D_DOUBLE_BUFFER", "0", 1);
gfx_ctx_vc_set_swap_interval(&vc->egl, vc->egl.interval);
g_egl_inited = true;
#endif