egl/dri2: Add plumbing for EGL_OPENGL_ES3_BIT_KHR

Fixes error EGL_BAD_ATTRIBUTE in the tests below on Intel Sandybridge:
    * piglit egl-create-context-verify-gl-flavor, testcase OpenGL ES 3.0
    * gles3conform, revision 19700, when runnning GL3Tests with -fbo

This plumbing is added in order to comply with the EGL_KHR_create_context
spec. According to the EGL_KHR_create_context spec, it is illegal to call
eglCreateContext(EGL_CONTEXT_MAJOR_VERSION_KHR=3) with a config whose
EGL_RENDERABLE_TYPE does not contain the EGL_OPENGL_ES3_BIT_KHR. The
pertinent
portion of the spec is quoted below; the key word is "respectively".

  * If <config> is not a valid EGLConfig, or does not support the
    requested client API, then an EGL_BAD_CONFIG error is generated
    (this includes requesting creation of an OpenGL ES 1.x, 2.0, or
    3.0 context when the EGL_RENDERABLE_TYPE attribute of <config>
    does not contain EGL_OPENGL_ES_BIT, EGL_OPENGL_ES2_BIT, or
    EGL_OPENGL_ES3_BIT_KHR respectively).

To create this patch, I searched for all the ES2 bit plumbing by calling
`git grep "ES2_BIT\|DRI_API_GLES2" src/egl`, and then at each location
added a case for ES3.

Signed-off-by: Chad Versace <[email protected]>
Reviewed-by: Ian Romanick <[email protected]>

5 files changed, 12 insertions, 2 deletions

diff --git a/src/egl/main/eglconfig.c b/src/egl/main/eglconfig.c
index e1d53da3cd5..b18f30123a9 100644
--- a/src/egl/main/eglconfig.c
+++ b/src/egl/main/eglconfig.c
@@ -331,6 +331,7 @@ _eglValidateConfig(const _EGLConfig *conf, EGLBoolean for_matching)
             mask = EGL_OPENGL_ES_BIT |
                    EGL_OPENVG_BIT |
                    EGL_OPENGL_ES2_BIT |
+                   EGL_OPENGL_ES3_BIT_KHR |
                    EGL_OPENGL_BIT;
             break;
          default:
diff --git a/src/egl/main/eglcontext.c b/src/egl/main/eglcontext.c
index 4efb76bb986..86af91d7deb 100644
--- a/src/egl/main/eglcontext.c
+++ b/src/egl/main/eglcontext.c
@@ -54,9 +54,11 @@ _eglGetContextAPIBit(_EGLContext *ctx)
          bit = EGL_OPENGL_ES_BIT;
          break;
       case 2:
-      case 3:
          bit = EGL_OPENGL_ES2_BIT;
          break;
+      case 3:
+         bit = EGL_OPENGL_ES3_BIT_KHR;
+         break;
       default:
          break;
       }
diff --git a/src/egl/main/eglcurrent.h b/src/egl/main/eglcurrent.h
index a64821eb125..45fcc64aad4 100644
--- a/src/egl/main/eglcurrent.h
+++ b/src/egl/main/eglcurrent.h
@@ -37,6 +37,7 @@
    (EGL_OPENGL_ES_BIT   | \
     EGL_OPENVG_BIT      | \
     EGL_OPENGL_ES2_BIT  | \
+    EGL_OPENGL_ES3_BIT_KHR | \
     EGL_OPENGL_BIT)
 
 
diff --git a/src/egl/main/eglmisc.c b/src/egl/main/eglmisc.c
index d445c41810c..92b0eae5f2a 100644
--- a/src/egl/main/eglmisc.c
+++ b/src/egl/main/eglmisc.c
@@ -140,6 +140,9 @@ _eglUpdateAPIsString(_EGLDisplay *dpy)
    if (dpy->ClientAPIs & EGL_OPENGL_ES2_BIT)
       strcat(apis, "OpenGL_ES2 ");
 
+   if (dpy->ClientAPIs & EGL_OPENGL_ES3_BIT_KHR)
+      strcat(apis, "OpenGL_ES3 ");
+
    if (dpy->ClientAPIs & EGL_OPENVG_BIT)
       strcat(apis, "OpenVG ");
 
diff --git a/src/egl/main/eglsurface.c b/src/egl/main/eglsurface.c
index 9fc53674fd0..fa57f833683 100644
--- a/src/egl/main/eglsurface.c
+++ b/src/egl/main/eglsurface.c
@@ -435,11 +435,14 @@ _eglSurfaceAttrib(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSurface *surface,
 {
    EGLint confval;
    EGLint err = EGL_SUCCESS;
+   EGLint all_es_bits = EGL_OPENGL_ES_BIT |
+                        EGL_OPENGL_ES2_BIT |
+                        EGL_OPENGL_ES3_BIT_KHR;
 
    switch (attribute) {
    case EGL_MIPMAP_LEVEL:
       confval = surface->Config->RenderableType;
-      if (!(confval & (EGL_OPENGL_ES_BIT | EGL_OPENGL_ES2_BIT))) {
+      if (!(confval & all_es_bits)) {
          err = EGL_BAD_PARAMETER;
          break;
       }