egl: call _eglError within _eglParseImageAttribList

As per EGL_KHR_image_base:

   If an attribute specified in <attrib_list> is not one of the
   attributes listed in Table bbb, the error EGL_BAD_PARAMETER is
   generated.

We should set the error as opposed to simply log it.

Currently we have a partial solution, whereby only some of the callers
call _eglError().

Since that has proven to be less robust, simply set the error by the
function itself and change the return type to EGLBoolean, updating the
callers.

So now the code is slightly simpler. Plus the follow-up fixes will be
easier to manage.

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>

src/egl/drivers/dri2/egl_dri2.c

@@ -1719,7 +1719,6 @@ dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
    const struct wl_drm_components_descriptor *f;
    __DRIimage *dri_image;
    _EGLImageAttribs attrs;
-   EGLint err;
    int32_t plane;
 
    buffer = wayland_drm_buffer_get(dri2_dpy->wl_server_drm,
@@ -1727,13 +1726,10 @@ dri2_create_image_wayland_wl_buffer(_EGLDisplay *disp, _EGLContext *ctx,
    if (!buffer)
        return NULL;
 
-   err = _eglParseImageAttribList(&attrs, disp, attr_list);
-   plane = attrs.PlaneWL;
-   if (err != EGL_SUCCESS) {
-      _eglError(EGL_BAD_PARAMETER, "dri2_create_image_wayland_wl_buffer");
+   if (!_eglParseImageAttribList(&attrs, disp, attr_list))
       return NULL;
-   }
 
+   plane = attrs.PlaneWL;
    f = buffer->driver_format;
    if (plane < 0 || plane >= f->nplanes) {
       _eglError(EGL_BAD_PARAMETER,
@@ -1819,7 +1815,7 @@ dri2_create_image_khr_texture(_EGLDisplay *disp, _EGLContext *ctx,
       return EGL_NO_IMAGE_KHR;
    }
 
-   if (_eglParseImageAttribList(&attrs, disp, attr_list) != EGL_SUCCESS)
+   if (!_eglParseImageAttribList(&attrs, disp, attr_list))
       return EGL_NO_IMAGE_KHR;
 
    switch (target) {
@@ -1906,8 +1902,7 @@ dri2_create_image_mesa_drm_buffer(_EGLDisplay *disp, _EGLContext *ctx,
 
    name = (EGLint) (uintptr_t) buffer;
 
-   err = _eglParseImageAttribList(&attrs, disp, attr_list);
-   if (err != EGL_SUCCESS)
+   if (!_eglParseImageAttribList(&attrs, disp, attr_list))
       return NULL;
 
    if (attrs.Width <= 0 || attrs.Height <= 0 ||
@@ -2199,7 +2194,6 @@ dri2_create_image_dma_buf(_EGLDisplay *disp, _EGLContext *ctx,
 {
    struct dri2_egl_display *dri2_dpy = dri2_egl_display(disp);
    _EGLImage *res;
-   EGLint err;
    _EGLImageAttribs attrs;
    __DRIimage *dri_image;
    unsigned num_fds;
@@ -2221,11 +2215,8 @@ dri2_create_image_dma_buf(_EGLDisplay *disp, _EGLContext *ctx,
       return NULL;
    }
 
-   err = _eglParseImageAttribList(&attrs, disp, attr_list);
-   if (err != EGL_SUCCESS) {
-      _eglError(err, "bad attribute");
+   if (!_eglParseImageAttribList(&attrs, disp, attr_list))
       return NULL;
-   }
 
    if (!dri2_check_dma_buf_attribs(&attrs))
       return NULL;
@@ -2298,7 +2289,6 @@ dri2_create_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp,
    _EGLImageAttribs attrs;
    unsigned int dri_use, valid_mask;
    int format;
-   EGLint err = EGL_SUCCESS;
 
    (void) drv;
 
@@ -2307,11 +2297,8 @@ dri2_create_drm_image_mesa(_EGLDriver *drv, _EGLDisplay *disp,
       return EGL_NO_IMAGE_KHR;
    }
 
-   err = _eglParseImageAttribList(&attrs, disp, attr_list);
-   if (err != EGL_SUCCESS) {
-      _eglError(EGL_BAD_PARAMETER, __func__);
+   if (!_eglParseImageAttribList(&attrs, disp, attr_list))
       return EGL_NO_IMAGE_KHR;
-   }
 
    if (attrs.Width <= 0 || attrs.Height <= 0) {
       _eglError(EGL_BAD_PARAMETER, __func__);

src/egl/main/eglimage.c

@@ -30,14 +30,18 @@
 #include <assert.h>
 #include <string.h>
 
+#include "eglcurrent.h"
 #include "eglimage.h"
 #include "egllog.h"
 
 
 /**
- * Parse the list of image attributes and return the proper error code.
+ * Parse the list of image attributes.
+ *
+ * Returns EGL_TRUE on success and EGL_FALSE otherwise.
+ * Function calls _eglError to set the correct error code.
  */
-EGLint
+EGLBoolean
 _eglParseImageAttribList(_EGLImageAttribs *attrs, _EGLDisplay *dpy,
                          const EGLint *attrib_list)
 {
@@ -48,7 +52,7 @@ _eglParseImageAttribList(_EGLImageAttribs *attrs, _EGLDisplay *dpy,
    memset(attrs, 0, sizeof(*attrs));
 
    if (!attrib_list)
-      return err;
+      return EGL_TRUE;
 
    for (i = 0; attrib_list[i] != EGL_NONE; i++) {
       EGLint attr = attrib_list[i++];
@@ -233,15 +237,12 @@ _eglParseImageAttribList(_EGLImageAttribs *attrs, _EGLDisplay *dpy,
          break;
 
       default:
-         /* unknown attrs are ignored */
-         break;
+         return _eglError(EGL_BAD_ATTRIBUTE, __func__);
       }
 
-      if (err != EGL_SUCCESS) {
-         _eglLog(_EGL_DEBUG, "bad image attribute 0x%04x", attr);
-         break;
-      }
+      if (err != EGL_SUCCESS)
+         return _eglError(err, __func__);
    }
 
-   return err;
+   return EGL_TRUE;
 }

src/egl/main/eglimage.h

@@ -91,7 +91,7 @@ struct _egl_image
 };
 
 
-extern EGLint
+EGLBoolean
 _eglParseImageAttribList(_EGLImageAttribs *attrs, _EGLDisplay *dpy,
                          const EGLint *attrib_list);