st/mesa: translate additional flags in MemoryBarrier

[mesa.git] / src / mesa / state_tracker / st_atom_framebuffer.c

diff --git a/src/mesa/state_tracker/st_atom_framebuffer.c b/src/mesa/state_tracker/st_atom_framebuffer.c
index 4c4f839d1d0b5b4fa98fdcaa1073b0c51242266b..ae883a2535e32ad98931632d4e5b406de1cf67f7 100644 (file)
--- a/src/mesa/state_tracker/st_atom_framebuffer.c
+++ b/src/mesa/state_tracker/st_atom_framebuffer.c
@@ -31,6 +31,8 @@
   *   Brian Paul
   */
  
+#include <limits.h>
+
 #include "st_context.h"
 #include "st_atom.h"
 #include "st_cb_bitmap.h"
@@ -43,6 +45,26 @@
 #include "util/u_format.h"
 
 
+/**
+ * Update framebuffer size.
+ *
+ * We need to derive pipe_framebuffer size from the bound pipe_surfaces here
+ * instead of copying gl_framebuffer size because for certain target types
+ * (like PIPE_TEXTURE_1D_ARRAY) gl_framebuffer::Height has the number of layers
+ * instead of 1.
+ */
+static void
+update_framebuffer_size(struct pipe_framebuffer_state *framebuffer,
+                        struct pipe_surface *surface)
+{
+   assert(surface);
+   assert(surface->width  < UINT_MAX);
+   assert(surface->height < UINT_MAX);
+   framebuffer->width  = MIN2(framebuffer->width,  surface->width);
+   framebuffer->height = MIN2(framebuffer->height, surface->height);
+}
+
+
 /**
  * Update framebuffer state (color, depth, stencil, etc. buffers)
  */
@@ -57,8 +79,8 @@ update_framebuffer_state( struct st_context *st )
    st_flush_bitmap_cache(st);
 
    st->state.fb_orientation = st_fb_orientation(fb);
-   framebuffer->width = fb->Width;
-   framebuffer->height = fb->Height;
+   framebuffer->width  = UINT_MAX;
+   framebuffer->height = UINT_MAX;
 
    /*printf("------ fb size %d x %d\n", fb->Width, fb->Height);*/
 
@@ -81,6 +103,7 @@ update_framebuffer_state( struct st_context *st )
 
          if (strb->surface) {
             pipe_surface_reference(&framebuffer->cbufs[i], strb->surface);
+            update_framebuffer_size(framebuffer, strb->surface);
          }
          strb->defined = GL_TRUE; /* we'll be drawing something */
       }
@@ -90,6 +113,12 @@ update_framebuffer_state( struct st_context *st )
       pipe_surface_reference(&framebuffer->cbufs[i], NULL);
    }
 
+   /* Remove trailing GL_NONE draw buffers. */
+   while (framebuffer->nr_cbufs &&
+          !framebuffer->cbufs[framebuffer->nr_cbufs-1]) {
+      framebuffer->nr_cbufs--;
+   }
+
    /*
     * Depth/Stencil renderbuffer/surface.
     */
@@ -100,12 +129,17 @@ update_framebuffer_state( struct st_context *st )
          st_update_renderbuffer_surface(st, strb);
       }
       pipe_surface_reference(&framebuffer->zsbuf, strb->surface);
+      update_framebuffer_size(framebuffer, strb->surface);
    }
    else {
       strb = st_renderbuffer(fb->Attachment[BUFFER_STENCIL].Renderbuffer);
       if (strb) {
-         assert(strb->surface);
+         if (strb->is_rtt) {
+            /* rendering to a GL texture, may have to update surface */
+            st_update_renderbuffer_surface(st, strb);
+         }
          pipe_surface_reference(&framebuffer->zsbuf, strb->surface);
+         update_framebuffer_size(framebuffer, strb->surface);
       }
       else
          pipe_surface_reference(&framebuffer->zsbuf, NULL);
@@ -122,6 +156,11 @@ update_framebuffer_state( struct st_context *st )
    }
 #endif
 
+   if (framebuffer->width == UINT_MAX)
+      framebuffer->width = 0;
+   if (framebuffer->height == UINT_MAX)
+      framebuffer->height = 0;
+
    cso_set_framebuffer(st->cso_context, framebuffer);
 }