From 52c554a79d3ed3104a9f7d112faa9129073b5a25 Mon Sep 17 00:00:00 2001 From: Kristian Høgsberg Date: Thu, 6 May 2010 22:01:35 -0400 Subject: egl: Implement EGL_NOK_swap_region This extension adds a new function which provides an alternative to eglSwapBuffers. eglSwapBuffersRegionNOK accepts two new parameters in addition to those in eglSwapBuffers. The new parameters consist of a pointer to a list of 4-integer blocks defining rectangles (x, y, width, height) and an integer specifying the number of rectangles in the list. --- src/egl/drivers/dri2/egl_dri2.c | 47 +++++++++++++++++++++++++++++++++++++++-- src/egl/main/eglapi.c | 32 ++++++++++++++++++++++++++++ src/egl/main/eglapi.h | 7 ++++++ src/egl/main/egldisplay.h | 1 + src/egl/main/eglmisc.c | 1 + 5 files changed, 86 insertions(+), 2 deletions(-) (limited to 'src') diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c index 6386737376..82f409d294 100644 --- a/src/egl/drivers/dri2/egl_dri2.c +++ b/src/egl/drivers/dri2/egl_dri2.c @@ -51,6 +51,8 @@ #include "eglsurface.h" #include "eglimage.h" +#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) + struct dri2_egl_driver { _EGLDriver base; @@ -778,6 +780,7 @@ dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp, disp->Extensions.KHR_image_pixmap = EGL_TRUE; disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE; disp->Extensions.KHR_gl_texture_2D_image = EGL_TRUE; + disp->Extensions.NOK_swap_region = EGL_TRUE; /* we're supporting EGL 1.4 */ *major = 1; @@ -1067,7 +1070,8 @@ dri2_create_pbuffer_surface(_EGLDriver *drv, _EGLDisplay *disp, } static EGLBoolean -dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw) +dri2_copy_region(_EGLDriver *drv, _EGLDisplay *disp, + _EGLSurface *draw, xcb_xfixes_region_t region) { struct dri2_egl_driver *dri2_drv = dri2_egl_driver(drv); struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp); @@ -1099,7 +1103,7 @@ dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw) cookie = xcb_dri2_copy_region_unchecked(dri2_dpy->conn, dri2_surf->drawable, - dri2_surf->region, + region, XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT, XCB_DRI2_ATTACHMENT_BUFFER_FAKE_FRONT_LEFT); free(xcb_dri2_copy_region_reply(dri2_dpy->conn, cookie, NULL)); @@ -1107,6 +1111,44 @@ dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw) return EGL_TRUE; } +static EGLBoolean +dri2_swap_buffers(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw) +{ + struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw); + + return dri2_copy_region(drv, disp, draw, dri2_surf->region); +} + +static EGLBoolean +dri2_swap_buffers_region(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *draw, + EGLint numRects, const EGLint *rects) +{ + struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp); + struct dri2_egl_surface *dri2_surf = dri2_egl_surface(draw); + EGLBoolean ret; + xcb_xfixes_region_t region; + xcb_rectangle_t rectangles[16]; + int i; + + if (numRects > ARRAY_SIZE(rectangles)) + return dri2_copy_region(drv, disp, draw, dri2_surf->region); + + /* FIXME: Invert y here? */ + for (i = 0; i < numRects; i++) { + rectangles[i].x = rects[i * 4]; + rectangles[i].y = rects[i * 4 + 1]; + rectangles[i].width = rects[i * 4 + 2]; + rectangles[i].height = rects[i * 4 + 3]; + } + + region = xcb_generate_id(dri2_dpy->conn); + xcb_xfixes_create_region(dri2_dpy->conn, region, numRects, rectangles); + ret = dri2_copy_region(drv, disp, draw, region); + xcb_xfixes_destroy_region(dri2_dpy->conn, region); + + return ret; +} + /* * Called from eglGetProcAddress() via drv->API.GetProcAddress(). */ @@ -1415,6 +1457,7 @@ _eglMain(const char *args) dri2_drv->base.API.ReleaseTexImage = dri2_release_tex_image; dri2_drv->base.API.CreateImageKHR = dri2_create_image_khr; dri2_drv->base.API.DestroyImageKHR = dri2_destroy_image_khr; + dri2_drv->base.API.SwapBuffersRegionNOK = dri2_swap_buffers_region; dri2_drv->base.Name = "DRI2"; dri2_drv->base.Unload = dri2_unload; diff --git a/src/egl/main/eglapi.c b/src/egl/main/eglapi.c index f57dda8883..923992da48 100644 --- a/src/egl/main/eglapi.c +++ b/src/egl/main/eglapi.c @@ -838,6 +838,9 @@ eglGetProcAddress(const char *procname) { "eglCreateImageKHR", (_EGLProc) eglCreateImageKHR }, { "eglDestroyImageKHR", (_EGLProc) eglDestroyImageKHR }, #endif /* EGL_KHR_image_base */ +#ifdef EGL_NOK_swap_region + { "eglSwapBuffersRegionNOK", (_EGLProc) eglSwapBuffersRegionNOK }, +#endif { NULL, NULL } }; EGLint i; @@ -1246,3 +1249,32 @@ eglDestroyImageKHR(EGLDisplay dpy, EGLImageKHR image) #endif /* EGL_KHR_image_base */ + + +#ifdef EGL_NOK_swap_region + +EGLBoolean +eglSwapBuffersRegionNOK(EGLDisplay dpy, EGLSurface surface, + EGLint numRects, const EGLint *rects) +{ + _EGLContext *ctx = _eglGetCurrentContext(); + _EGLDisplay *disp = _eglLockDisplay(dpy); + _EGLSurface *surf = _eglLookupSurface(surface, disp); + _EGLDriver *drv; + EGLBoolean ret; + + _EGL_CHECK_SURFACE(disp, surf, EGL_FALSE, drv); + + /* surface must be bound to current context in EGL 1.4 */ + if (!ctx || !_eglIsContextLinked(ctx) || surf != ctx->DrawSurface) + RETURN_EGL_ERROR(disp, EGL_BAD_SURFACE, EGL_FALSE); + + if (drv->API.SwapBuffersRegionNOK) + ret = drv->API.SwapBuffersRegionNOK(drv, disp, surf, numRects, rects); + else + ret = drv->API.SwapBuffers(drv, disp, surf); + + RETURN_EGL_EVAL(disp, ret); +} + +#endif /* EGL_NOK_swap_region */ diff --git a/src/egl/main/eglapi.h b/src/egl/main/eglapi.h index 3e2ba8dd41..d8c8b49a49 100644 --- a/src/egl/main/eglapi.h +++ b/src/egl/main/eglapi.h @@ -76,6 +76,9 @@ typedef _EGLImage *(*CreateImageKHR_t)(_EGLDriver *drv, _EGLDisplay *dpy, _EGLCo typedef EGLBoolean (*DestroyImageKHR_t)(_EGLDriver *drv, _EGLDisplay *dpy, _EGLImage *image); #endif /* EGL_KHR_image_base */ +#ifdef EGL_NOK_swap_region +typedef EGLBoolean (*SwapBuffersRegionNOK_t)(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf, EGLint numRects, const EGLint *rects); +#endif /** * The API dispatcher jumps through these functions @@ -134,6 +137,10 @@ struct _egl_api CreateImageKHR_t CreateImageKHR; DestroyImageKHR_t DestroyImageKHR; #endif /* EGL_KHR_image_base */ + +#ifdef EGL_NOK_swap_region + SwapBuffersRegionNOK_t SwapBuffersRegionNOK; +#endif }; #endif /* EGLAPI_INCLUDED */ diff --git a/src/egl/main/egldisplay.h b/src/egl/main/egldisplay.h index 21bf22b5fe..0b7f9d8303 100644 --- a/src/egl/main/egldisplay.h +++ b/src/egl/main/egldisplay.h @@ -46,6 +46,7 @@ struct _egl_extensions EGLBoolean KHR_gl_texture_cubemap_image; EGLBoolean KHR_gl_texture_3D_image; EGLBoolean KHR_gl_renderbuffer_image; + EGLBoolean NOK_swap_region; char String[_EGL_MAX_EXTENSIONS_LEN]; }; diff --git a/src/egl/main/eglmisc.c b/src/egl/main/eglmisc.c index 984e426686..82ddb6cad9 100644 --- a/src/egl/main/eglmisc.c +++ b/src/egl/main/eglmisc.c @@ -96,6 +96,7 @@ _eglUpdateExtensionsString(_EGLDisplay *dpy) _EGL_CHECK_EXTENSION(KHR_gl_texture_3D_image); _EGL_CHECK_EXTENSION(KHR_gl_renderbuffer_image); + _EGL_CHECK_EXTENSION(NOK_swap_region); #undef _EGL_CHECK_EXTENSION } -- cgit v1.2.3