egl: Add EGL_MESA_drm_image extension

Create EGLImages from DRM buffer handles.

4 files changed, 55 insertions, 0 deletions

diff --git a/src/egl/main/eglapi.c b/src/egl/main/eglapi.c
index c62459ec6f..31c5419bbc 100644
--- a/src/egl/main/eglapi.c
+++ b/src/egl/main/eglapi.c
@@ -894,6 +894,10 @@ eglGetProcAddress(const char *procname)
 #ifdef EGL_NOK_swap_region
       { "eglSwapBuffersRegionNOK", (_EGLProc) eglSwapBuffersRegionNOK },
 #endif
+#ifdef EGL_MESA_drm_image
+      { "eglCreateDRMImageMESA", (_EGLProc) eglCreateDRMImageMESA },
+      { "eglExportDRMImageMESA", (_EGLProc) eglExportDRMImageMESA },
+#endif
       { NULL, NULL }
    };
    EGLint i;
@@ -1416,3 +1420,42 @@ eglSwapBuffersRegionNOK(EGLDisplay dpy, EGLSurface surface,
 }
 
 #endif /* EGL_NOK_swap_region */
+
+
+#ifdef EGL_MESA_drm_image
+
+EGLImageKHR EGLAPIENTRY
+eglCreateDRMImageMESA(EGLDisplay dpy, const EGLint *attr_list)
+{
+   _EGLDisplay *disp = _eglLockDisplay(dpy);
+   _EGLDriver *drv;
+   _EGLImage *img;
+   EGLImageKHR ret;
+
+   _EGL_CHECK_DISPLAY(disp, EGL_NO_IMAGE_KHR, drv);
+
+   img = drv->API.CreateDRMImageMESA(drv, disp, attr_list);
+   ret = (img) ? _eglLinkImage(img, disp) : EGL_NO_IMAGE_KHR;
+
+   RETURN_EGL_EVAL(disp, ret);
+}
+
+EGLBoolean EGLAPIENTRY
+eglExportDRMImageMESA(EGLDisplay dpy, EGLImageKHR image,
+		      EGLint *name, EGLint *handle, EGLint *stride)
+{
+   _EGLDisplay *disp = _eglLockDisplay(dpy);
+   _EGLImage *img = _eglLookupImage(image, disp);
+   _EGLDriver *drv;
+   EGLBoolean ret;
+
+   _EGL_CHECK_DISPLAY(disp, EGL_FALSE, drv);
+   if (!img)
+      RETURN_EGL_ERROR(disp, EGL_BAD_PARAMETER, EGL_FALSE);
+
+   ret = drv->API.ExportDRMImageMESA(drv, disp, img, name, handle, stride);
+
+   RETURN_EGL_EVAL(disp, ret);
+}
+
+#endif
diff --git a/src/egl/main/eglapi.h b/src/egl/main/eglapi.h
index 5045a9a272..127becc9ac 100644
--- a/src/egl/main/eglapi.h
+++ b/src/egl/main/eglapi.h
@@ -90,6 +90,11 @@ typedef EGLBoolean (*GetSyncAttribKHR_t)(_EGLDriver *drv, _EGLDisplay *dpy, _EGL
 typedef EGLBoolean (*SwapBuffersRegionNOK_t)(_EGLDriver *drv, _EGLDisplay *disp, _EGLSurface *surf, EGLint numRects, const EGLint *rects);
 #endif
 
+#ifdef EGL_MESA_drm_image
+typedef _EGLImage *(*CreateDRMImageMESA_t)(_EGLDriver *drv, _EGLDisplay *disp, const EGLint *attr_list);
+typedef EGLBoolean (*ExportDRMImageMESA_t)(_EGLDriver *drv, _EGLDisplay *disp, _EGLImage *img, EGLint *name, EGLint *handle, EGLint *stride);
+#endif
+
 /**
  * The API dispatcher jumps through these functions
  */
@@ -159,6 +164,11 @@ struct _egl_api
 #ifdef EGL_NOK_swap_region
    SwapBuffersRegionNOK_t SwapBuffersRegionNOK;
 #endif
+
+#ifdef EGL_MESA_drm_image
+   CreateDRMImageMESA_t CreateDRMImageMESA;
+   ExportDRMImageMESA_t ExportDRMImageMESA;
+#endif
 };
 
 #endif /* EGLAPI_INCLUDED */
diff --git a/src/egl/main/egldisplay.h b/src/egl/main/egldisplay.h
index 97c9d196ec..3863cce010 100644
--- a/src/egl/main/egldisplay.h
+++ b/src/egl/main/egldisplay.h
@@ -54,6 +54,7 @@ struct _egl_extensions
    EGLBoolean MESA_screen_surface;
    EGLBoolean MESA_copy_context;
    EGLBoolean MESA_drm_display;
+   EGLBoolean MESA_drm_image;
 
    EGLBoolean KHR_image_base;
    EGLBoolean KHR_image_pixmap;
diff --git a/src/egl/main/eglmisc.c b/src/egl/main/eglmisc.c
index b10783bcb9..eb3dde1fb4 100644
--- a/src/egl/main/eglmisc.c
+++ b/src/egl/main/eglmisc.c
@@ -85,6 +85,7 @@ _eglUpdateExtensionsString(_EGLDisplay *dpy)
    _EGL_CHECK_EXTENSION(MESA_screen_surface);
    _EGL_CHECK_EXTENSION(MESA_copy_context);
    _EGL_CHECK_EXTENSION(MESA_drm_display);
+   _EGL_CHECK_EXTENSION(MESA_drm_image);
 
    _EGL_CHECK_EXTENSION(KHR_image_base);
    _EGL_CHECK_EXTENSION(KHR_image_pixmap);