From: Eric Anholt Date: Sun, 21 Dec 2014 19:51:33 +0000 (-0800) Subject: egl: Inform the client API when ancillary buffers may become undefined. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=70e8ccc459d9bf579ad7efeae453cb8641266c94;p=mesa.git egl: Inform the client API when ancillary buffers may become undefined. This is part of the EGL spec, and is useful for a tiled renderer to avoid the memory bandwidth cost of storing the depth/stencil buffers. Reviewed-by: Jose Fonseca --- diff --git a/include/GL/internal/dri_interface.h b/include/GL/internal/dri_interface.h index 8c5ceb98c28..1d670b1e083 100644 --- a/include/GL/internal/dri_interface.h +++ b/include/GL/internal/dri_interface.h @@ -279,6 +279,7 @@ struct __DRItexBufferExtensionRec { #define __DRI2_FLUSH_DRAWABLE (1 << 0) /* the drawable should be flushed. */ #define __DRI2_FLUSH_CONTEXT (1 << 1) /* glFlush should be called */ +#define __DRI2_FLUSH_INVALIDATE_ANCILLARY (1 << 2) enum __DRI2throttleReason { __DRI2_THROTTLE_SWAPBUFFER, diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c index 2a6811ce3f5..86e5f248d1e 100644 --- a/src/egl/drivers/dri2/egl_dri2.c +++ b/src/egl/drivers/dri2/egl_dri2.c @@ -1087,6 +1087,42 @@ dri2_swap_interval(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf, return dri2_dpy->vtbl->swap_interval(drv, dpy, surf, interval); } +/** + * Asks the client API to flush any rendering to the drawable so that we can + * do our swapbuffers. + */ +void +dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw) +{ + struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp); + struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw); + + if (dri2_dpy->flush) { + if (dri2_dpy->flush->base.version >= 4) { + /* We know there's a current context because: + * + * "If surface is not bound to the calling thread’s current + * context, an EGL_BAD_SURFACE error is generated." + */ + _EGLContext *ctx = _eglGetCurrentContext(); + struct dri2_egl_context *dri2_ctx = dri2_egl_context(ctx); + + /* From the EGL 1.4 spec (page 52): + * + * "The contents of ancillary buffers are always undefined + * after calling eglSwapBuffers." + */ + dri2_dpy->flush->flush_with_flags(dri2_ctx->dri_context, + dri2_surf->dri_drawable, + __DRI2_FLUSH_DRAWABLE | + __DRI2_FLUSH_INVALIDATE_ANCILLARY, + __DRI2_THROTTLE_SWAPBUFFER); + } else { + dri2_dpy->flush->flush(dri2_surf->dri_drawable); + } + } +} + static EGLBoolean dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surf) { diff --git a/src/egl/drivers/dri2/egl_dri2.h b/src/egl/drivers/dri2/egl_dri2.h index 52f05fbfd3c..9efe1f733fd 100644 --- a/src/egl/drivers/dri2/egl_dri2.h +++ b/src/egl/drivers/dri2/egl_dri2.h @@ -332,4 +332,7 @@ dri2_initialize_wayland(_EGLDriver *drv, _EGLDisplay *disp); EGLBoolean dri2_initialize_android(_EGLDriver *drv, _EGLDisplay *disp); +void +dri2_flush_drawable_for_swapbuffers(_EGLDisplay *disp, _EGLSurface *draw); + #endif /* EGL_DRI2_INCLUDED */ diff --git a/src/egl/drivers/dri2/platform_android.c b/src/egl/drivers/dri2/platform_android.c index 61a99ba68f1..f4825261bad 100644 --- a/src/egl/drivers/dri2/platform_android.c +++ b/src/egl/drivers/dri2/platform_android.c @@ -311,7 +311,7 @@ droid_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw) dri2_drv->glFlush(); } - (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable); + dri2_flush_drawable_for_swapbuffers(disp, draw); if (dri2_surf->buffer) droid_window_enqueue_buffer(dri2_surf); diff --git a/src/egl/drivers/dri2/platform_drm.c b/src/egl/drivers/dri2/platform_drm.c index 753c60f1426..02e87f7771b 100644 --- a/src/egl/drivers/dri2/platform_drm.c +++ b/src/egl/drivers/dri2/platform_drm.c @@ -431,7 +431,7 @@ dri2_drm_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw) dri2_surf->back = NULL; } - (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable); + dri2_flush_drawable_for_swapbuffers(disp, draw); (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable); } diff --git a/src/egl/drivers/dri2/platform_wayland.c b/src/egl/drivers/dri2/platform_wayland.c index ba0eb10163a..e8b441316ee 100644 --- a/src/egl/drivers/dri2/platform_wayland.c +++ b/src/egl/drivers/dri2/platform_wayland.c @@ -649,17 +649,7 @@ dri2_wl_swap_buffers_with_damage(_EGLDriver *drv, } } - if (dri2_dpy->flush->base.version >= 4) { - ctx = _eglGetCurrentContext(); - dri2_ctx = dri2_egl_context(ctx); - (*dri2_dpy->flush->flush_with_flags)(dri2_ctx->dri_context, - dri2_surf->dri_drawable, - __DRI2_FLUSH_DRAWABLE, - __DRI2_THROTTLE_SWAPBUFFER); - } else { - (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable); - } - + dri2_flush_drawable_for_swapbuffers(disp, draw); (*dri2_dpy->flush->invalidate)(dri2_surf->dri_drawable); wl_surface_commit(dri2_surf->wl_win->surface); diff --git a/src/egl/drivers/dri2/platform_x11.c b/src/egl/drivers/dri2/platform_x11.c index f8c4b707a29..dd88e900e8d 100644 --- a/src/egl/drivers/dri2/platform_x11.c +++ b/src/egl/drivers/dri2/platform_x11.c @@ -771,8 +771,7 @@ dri2_x11_swap_buffers_msc(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw, if (draw->SwapBehavior == EGL_BUFFER_PRESERVED || !dri2_dpy->swap_available) return dri2_copy_region(drv, disp, draw, dri2_surf->region) ? 0 : -1; - if (dri2_dpy->flush) - (*dri2_dpy->flush->flush)(dri2_surf->dri_drawable); + dri2_flush_drawable_for_swapbuffers(disp, draw); cookie = xcb_dri2_swap_buffers_unchecked(dri2_dpy->conn, dri2_surf->drawable, msc_hi, msc_lo, divisor_hi, divisor_lo, remainder_hi, remainder_lo);