egl: Overhaul driver API.

The motivation is so that drivers do not need to look up and check for
bad display, context, and etc.  It also becomes unnecessary for drivers
to call the link functions.

This commit makes eglapi.[ch] do the lookup and check.  As a result, the
driver API is overhauled, and almost all sources and drivers need
update.  The updates are mainly find and replace with human brains.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>

1 files changed, 25 insertions, 84 deletions

diff --git a/src/egl/main/eglscreen.c b/src/egl/main/eglscreen.c
index b6bde65e8b..14a1e9f8fe 100644
--- a/src/egl/main/eglscreen.c
+++ b/src/egl/main/eglscreen.c
@@ -52,13 +52,9 @@ _eglInitScreen(_EGLScreen *screen)
  * Given a public screen handle, return the internal _EGLScreen object.
  */
 _EGLScreen *
-_eglLookupScreen(EGLDisplay dpy, EGLScreenMESA screen)
+_eglLookupScreen(EGLScreenMESA screen, _EGLDisplay *display)
 {
    EGLint i;
-   _EGLDisplay *display = _eglLookupDisplay(dpy);
-
-   if (!display)
-      return NULL;
 
    for (i = 0; i < display->NumScreens; i++) {
       if (display->Screens[i]->Handle == screen)
@@ -89,17 +85,11 @@ _eglAddScreen(_EGLDisplay *display, _EGLScreen *screen)
 
 
 EGLBoolean
-_eglGetScreensMESA(_EGLDriver *drv, EGLDisplay dpy, EGLScreenMESA *screens,
+_eglGetScreensMESA(_EGLDriver *drv, _EGLDisplay *display, EGLScreenMESA *screens,
                    EGLint max_screens, EGLint *num_screens)
 {
-   _EGLDisplay *display = _eglLookupDisplay(dpy);
    EGLint n;
 
-   if (!display) {
-      _eglError(EGL_BAD_DISPLAY, "eglGetScreensMESA");
-      return EGL_FALSE;
-   }
-
    if (display->NumScreens > max_screens) {
       n = max_screens;
    }
@@ -122,33 +112,26 @@ _eglGetScreensMESA(_EGLDriver *drv, EGLDisplay dpy, EGLScreenMESA *screens,
 /**
  * Example function - drivers should do a proper implementation.
  */
-EGLSurface
-_eglCreateScreenSurfaceMESA(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config,
+_EGLSurface *
+_eglCreateScreenSurfaceMESA(_EGLDriver *drv, _EGLDisplay *dpy, _EGLConfig *conf,
                             const EGLint *attrib_list)
 {
 #if 0 /* THIS IS JUST EXAMPLE CODE */
    _EGLSurface *surf;
-   _EGLConfig *conf;
-
-   conf = _eglLookupConfig(drv, dpy, config);
-   if (!conf) {
-      _eglError(EGL_BAD_CONFIG, "eglCreateScreenSurfaceMESA");
-      return EGL_NO_SURFACE;
-   }
 
    surf = (_EGLSurface *) calloc(1, sizeof(_EGLSurface));
    if (!surf)
-      return EGL_NO_SURFACE;
+      return NULL;
 
    if (!_eglInitSurface(drv, surf, EGL_SCREEN_BIT_MESA,
                         conf, attrib_list)) {
       free(surf);
-      return EGL_NO_SURFACE;
+      return NULL;
    }
 
-   return _eglLinkSurface(surf, _eglLookupDisplay(dpy));
+   return surf;
 #endif
-   return EGL_NO_SURFACE;
+   return NULL;
 }
 
 
@@ -160,28 +143,15 @@ _eglCreateScreenSurfaceMESA(_EGLDriver *drv, EGLDisplay dpy, EGLConfig config,
  * this with code that _really_ shows the surface.
  */
 EGLBoolean
-_eglShowScreenSurfaceMESA(_EGLDriver *drv, EGLDisplay dpy,
-                          EGLScreenMESA screen, EGLSurface surface,
-                          EGLModeMESA m)
+_eglShowScreenSurfaceMESA(_EGLDriver *drv, _EGLDisplay *dpy,
+                          _EGLScreen *scrn, _EGLSurface *surf,
+                          _EGLMode *mode)
 {
-   _EGLScreen *scrn = _eglLookupScreen(dpy, screen);
-   _EGLMode *mode = _eglLookupMode(dpy, m);
-
-   if (!scrn) {
-      _eglError(EGL_BAD_SCREEN_MESA, "eglShowSurfaceMESA");
-      return EGL_FALSE;
-   }
-   if (!mode && (m != EGL_NO_MODE_MESA )) {
-      _eglError(EGL_BAD_MODE_MESA, "eglShowSurfaceMESA");
-      return EGL_FALSE;
-   }
-
-   if (surface == EGL_NO_SURFACE) {
+   if (!surf) {
       scrn->CurrentSurface = NULL;
    }
    else {
-      _EGLSurface *surf = _eglLookupSurface(surface);
-      if (!surf || surf->Type != EGL_SCREEN_BIT_MESA) {
+      if (surf->Type != EGL_SCREEN_BIT_MESA) {
          _eglError(EGL_BAD_SURFACE, "eglShowSurfaceMESA");
          return EGL_FALSE;
       }
@@ -206,18 +176,10 @@ _eglShowScreenSurfaceMESA(_EGLDriver *drv, EGLDisplay dpy,
  * this with code that _really_ sets the mode.
  */
 EGLBoolean
-_eglScreenModeMESA(_EGLDriver *drv, EGLDisplay dpy, EGLScreenMESA screen,
-                   EGLModeMESA mode)
+_eglScreenModeMESA(_EGLDriver *drv, _EGLDisplay *dpy, _EGLScreen *scrn,
+                   _EGLMode *m)
 {
-   _EGLScreen *scrn = _eglLookupScreen(dpy, screen);
-
-   if (!scrn) {
-      _eglError(EGL_BAD_SCREEN_MESA, "eglScreenModeMESA");
-      return EGL_FALSE;
-   }
-
-   scrn->CurrentMode = _eglLookupMode(dpy, mode);
-
+   scrn->CurrentMode = m;
    return EGL_TRUE;
 }
 
@@ -226,15 +188,9 @@ _eglScreenModeMESA(_EGLDriver *drv, EGLDisplay dpy, EGLScreenMESA screen,
  * Set a screen's surface origin.
  */
 EGLBoolean
-_eglScreenPositionMESA(_EGLDriver *drv, EGLDisplay dpy,
-                       EGLScreenMESA screen, EGLint x, EGLint y)
+_eglScreenPositionMESA(_EGLDriver *drv, _EGLDisplay *dpy,
+                       _EGLScreen *scrn, EGLint x, EGLint y)
 {
-   _EGLScreen *scrn = _eglLookupScreen(dpy, screen);
-   if (!scrn) {
-      _eglError(EGL_BAD_SCREEN_MESA, "eglScreenPositionMESA");
-      return EGL_FALSE;
-   }
-
    scrn->OriginX = x;
    scrn->OriginY = y;
 
@@ -246,14 +202,10 @@ _eglScreenPositionMESA(_EGLDriver *drv, EGLDisplay dpy,
  * Query a screen's current surface.
  */
 EGLBoolean
-_eglQueryScreenSurfaceMESA(_EGLDriver *drv, EGLDisplay dpy,
-                           EGLScreenMESA screen, EGLSurface *surface)
+_eglQueryScreenSurfaceMESA(_EGLDriver *drv, _EGLDisplay *dpy,
+                           _EGLScreen *scrn, _EGLSurface **surf)
 {
-   const _EGLScreen *scrn = _eglLookupScreen(dpy, screen);
-   if (scrn->CurrentSurface)
-      *surface = scrn->CurrentSurface->Handle;
-   else
-      *surface = EGL_NO_SURFACE;
+   *surf = scrn->CurrentSurface;
    return EGL_TRUE;
 }
 
@@ -262,29 +214,18 @@ _eglQueryScreenSurfaceMESA(_EGLDriver *drv, EGLDisplay dpy,
  * Query a screen's current mode.
  */
 EGLBoolean
-_eglQueryScreenModeMESA(_EGLDriver *drv, EGLDisplay dpy, EGLScreenMESA screen,
-                        EGLModeMESA *mode)
+_eglQueryScreenModeMESA(_EGLDriver *drv, _EGLDisplay *dpy, _EGLScreen *scrn,
+                        _EGLMode **m)
 {
-   const _EGLScreen *scrn = _eglLookupScreen(dpy, screen);
-   if (scrn->CurrentMode)
-      *mode = scrn->CurrentMode->Handle;
-   else
-      *mode = EGL_NO_MODE_MESA;
+   *m = scrn->CurrentMode;
    return EGL_TRUE;
 }
 
 
 EGLBoolean
-_eglQueryScreenMESA(_EGLDriver *drv, EGLDisplay dpy, EGLScreenMESA screen,
+_eglQueryScreenMESA(_EGLDriver *drv, _EGLDisplay *dpy, _EGLScreen *scrn,
                     EGLint attribute, EGLint *value)
 {
-   const _EGLScreen *scrn = _eglLookupScreen(dpy, screen);
-
-   if (!scrn) {
-      _eglError(EGL_BAD_SCREEN_MESA, "eglQueryScreenMESA");
-      return EGL_FALSE;
-   }
-
    switch (attribute) {
    case EGL_SCREEN_POSITION_MESA:
       value[0] = scrn->OriginX;