5 files changed, 37 insertions, 14 deletions

diff --git a/src/gallium/state_trackers/dri/dri_context.c b/src/gallium/state_trackers/dri/dri_context.c
index 6c617197ec..830e511fef 100644
--- a/src/gallium/state_trackers/dri/dri_context.c
+++ b/src/gallium/state_trackers/dri/dri_context.c
@@ -109,9 +109,6 @@ dri_destroy_context(__DRIcontextPrivate * cPriv)
     */
    st_flush(ctx->st, 0, NULL);
 
-   if (screen->dummyContext == ctx)
-      screen->dummyContext = NULL;
-
    /* Also frees ctx->pipe?
     */
    st_destroy_context(ctx->st);
@@ -153,11 +150,6 @@ dri_make_current(__DRIcontextPrivate * cPriv,
 
       ++ctx->bind_count;
 
-      /* This is for situations in which we need a rendering context but
-       * there may not be any currently bound.
-       */
-      screen->dummyContext = ctx;
-
       if (ctx->dPriv != driDrawPriv) {
 	 ctx->dPriv = driDrawPriv;
 	 ctx->d_stamp = driDrawPriv->lastStamp - 1;
diff --git a/src/gallium/state_trackers/dri/dri_drawable.c b/src/gallium/state_trackers/dri/dri_drawable.c
index 1d91fbb89f..0a952f7b28 100644
--- a/src/gallium/state_trackers/dri/dri_drawable.c
+++ b/src/gallium/state_trackers/dri/dri_drawable.c
@@ -204,6 +204,30 @@ dri_get_buffers(__DRIdrawablePrivate * dPriv)
    st_resize_framebuffer(drawable->stfb, dri_drawable->w, dri_drawable->h);
 }
 
+/**
+ * These are used for GLX_EXT_texture_from_pixmap
+ */
+void dri2_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
+                          GLint format, __DRIdrawable *dPriv)
+{
+   struct dri_drawable *drawable = dri_drawable(dPriv);
+   struct pipe_surface *ps;
+
+   dri_get_buffers(drawable->dPriv);
+   st_get_framebuffer_surface(drawable->stfb, ST_SURFACE_FRONT_LEFT, &ps);
+
+   st_bind_texture_surface(ps, target == GL_TEXTURE_2D ? ST_TEXTURE_2D :
+                           ST_TEXTURE_RECT, 0,
+                           format == GLX_TEXTURE_FORMAT_RGBA_EXT ?
+                           PIPE_FORMAT_R8G8B8A8_UNORM : PIPE_FORMAT_R8G8B8X8_UNORM);
+}
+
+void dri2_set_tex_buffer(__DRIcontext *pDRICtx, GLint target,
+                         __DRIdrawable *dPriv)
+{
+   dri2_set_tex_buffer2(pDRICtx, target, GLX_TEXTURE_FORMAT_RGBA_EXT, dPriv);
+}
+
 void
 dri_flush_frontbuffer(struct pipe_screen *screen,
 		      struct pipe_surface *surf, void *context_private)
diff --git a/src/gallium/state_trackers/dri/dri_drawable.h b/src/gallium/state_trackers/dri/dri_drawable.h
index 2fbd5f1eb7..dfd0b8766d 100644
--- a/src/gallium/state_trackers/dri/dri_drawable.h
+++ b/src/gallium/state_trackers/dri/dri_drawable.h
@@ -91,6 +91,12 @@ void dri_get_buffers(__DRIdrawablePrivate * dPriv);
 
 void dri_destroy_buffer(__DRIdrawablePrivate * dPriv);
 
+void dri2_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
+                          GLint glx_texture_format, __DRIdrawable *dPriv);
+
+void dri2_set_tex_buffer(__DRIcontext *pDRICtx, GLint target,
+                         __DRIdrawable *dPriv);
+
 void
 dri1_update_drawables(struct dri_context *ctx,
 		      struct dri_drawable *draw, struct dri_drawable *read);
diff --git a/src/gallium/state_trackers/dri/dri_screen.c b/src/gallium/state_trackers/dri/dri_screen.c
index 5f78b7264a..25555128f9 100644
--- a/src/gallium/state_trackers/dri/dri_screen.c
+++ b/src/gallium/state_trackers/dri/dri_screen.c
@@ -57,12 +57,19 @@ PUBLIC const char __driConfigOptions[] =
 
    const uint __driNConfigOptions = 3;
 
+static const __DRItexBufferExtension dri2TexBufferExtension = {
+    { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
+   dri2_set_tex_buffer,
+   dri2_set_tex_buffer2,
+};
+
    static const __DRIextension *dri_screen_extensions[] = {
       &driReadDrawableExtension,
       &driCopySubBufferExtension.base,
       &driSwapControlExtension.base,
       &driFrameTrackingExtension.base,
       &driMediaStreamCounterExtension.base,
+      &dri2TexBufferExtension.base,
       NULL
    };
 
diff --git a/src/gallium/state_trackers/dri/dri_screen.h b/src/gallium/state_trackers/dri/dri_screen.h
index f3335bb09f..f6c56d0f0c 100644
--- a/src/gallium/state_trackers/dri/dri_screen.h
+++ b/src/gallium/state_trackers/dri/dri_screen.h
@@ -49,12 +49,6 @@ struct dri_screen
     */
    driOptionCache optionCache;
 
-   /**
-    * Temporary(?) context to use for SwapBuffers or other situations in
-    * which we need a rendering context, but none is currently bound.
-    */
-   struct dri_context *dummyContext;
-
    /* drm */
    int fd;
    drmLock *drmLock;