egl: Implement EGL_NOK_texture_from_pixmap

This extension allows a color buffer to be used for both rendering and
texturing.  EGL allows the use of color buffers of pbuffer drawables
for texturing, this extension extends this to allow the use of color
buffers of pixmaps too.

1 files changed, 6 insertions, 18 deletions

diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c
index 82f409d294..a7030f03db 100644
--- a/src/egl/drivers/dri2/egl_dri2.c
+++ b/src/egl/drivers/dri2/egl_dri2.c
@@ -165,7 +165,7 @@ EGLint dri2_to_egl_attribute_map[] = {
    0,				/* __DRI_ATTRIB_BIND_TO_TEXTURE_RGBA */
    0,				/* __DRI_ATTRIB_BIND_TO_MIPMAP_TEXTURE */
    0,				/* __DRI_ATTRIB_BIND_TO_TEXTURE_TARGETS */
-   0,				/* __DRI_ATTRIB_YINVERTED */
+   EGL_Y_INVERTED_NOK,		/* __DRI_ATTRIB_YINVERTED */
 };
 
 static void
@@ -781,6 +781,7 @@ dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp,
    disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
    disp->Extensions.KHR_gl_texture_2D_image = EGL_TRUE;
    disp->Extensions.NOK_swap_region = EGL_TRUE;
+   disp->Extensions.NOK_texture_from_pixmap = EGL_TRUE;
 
    /* we're supporting EGL 1.4 */
    *major = 1;
@@ -1229,19 +1230,8 @@ dri2_bind_tex_image(_EGLDriver *drv,
    ctx = _eglGetCurrentContext();
    dri2_ctx = dri2_egl_context(ctx);
 
-   if (buffer != EGL_BACK_BUFFER) {
-      _eglError(EGL_BAD_PARAMETER, "eglBindTexImage");
+   if (!_eglBindTexImage(drv, disp, surf, buffer))
       return EGL_FALSE;
-   }
-
-   /* We allow binding pixmaps too... Not conformat, but we can do it
-    * for free and it's useful for X compositors.  Supposedly there's
-    * a EGL_NOKIA_texture_from_pixmap extension that allows that, but
-    * I couldn't find it at this time. */
-   if ((dri2_surf->base.Type & (EGL_PBUFFER_BIT | EGL_PIXMAP_BIT)) == 0) {
-      _eglError(EGL_BAD_SURFACE, "eglBindTexImage");
-      return EGL_FALSE;
-   }
 
    switch (dri2_surf->base.TextureFormat) {
    case EGL_TEXTURE_RGB:
@@ -1251,8 +1241,7 @@ dri2_bind_tex_image(_EGLDriver *drv,
       format = __DRI_TEXTURE_FORMAT_RGBA;
       break;
    default:
-      _eglError(EGL_BAD_MATCH, "eglBindTexImage");
-      return EGL_FALSE;
+      assert(0);
    }
 
    switch (dri2_surf->base.TextureTarget) {
@@ -1260,15 +1249,14 @@ dri2_bind_tex_image(_EGLDriver *drv,
       target = GL_TEXTURE_2D;
       break;
    default:
-      _eglError(EGL_BAD_PARAMETER, "eglBindTexImage");
-      return EGL_FALSE;
+      assert(0);
    }
 
    (*dri2_dpy->tex_buffer->setTexBuffer2)(dri2_ctx->dri_context,
 					  target, format,
 					  dri2_surf->dri_drawable);
 
-   return dri2_surf->base.BoundToTexture = EGL_TRUE;
+   return EGL_TRUE;
 }
 
 static EGLBoolean