1 files changed, 36 insertions, 3 deletions
diff --git a/mesalib/src/mesa/main/fbobject.c b/mesalib/src/mesa/main/fbobject.c
index 0126e2930..3fdf62667 100644
--- a/mesalib/src/mesa/main/fbobject.c
+++ b/mesalib/src/mesa/main/fbobject.c
@@ -43,6 +43,7 @@
 #include "hash.h"
 #include "macros.h"
 #include "mfeatures.h"
+#include "multisample.h"
 #include "mtypes.h"
 #include "renderbuffer.h"
 #include "state.h"
@@ -474,6 +475,32 @@ _mesa_validate_framebuffer(struct gl_context *ctx, struct gl_framebuffer *fb)
 
 
 /**
+ * Return true if the framebuffer has a combined depth/stencil
+ * renderbuffer attached.
+ */
+GLboolean
+_mesa_has_depthstencil_combined(const struct gl_framebuffer *fb)
+{
+   const struct gl_renderbuffer_attachment *depth =
+         &fb->Attachment[BUFFER_DEPTH];
+   const struct gl_renderbuffer_attachment *stencil =
+         &fb->Attachment[BUFFER_STENCIL];
+
+   if (depth->Type == stencil->Type) {
+      if (depth->Type == GL_RENDERBUFFER_EXT &&
+          depth->Renderbuffer == stencil->Renderbuffer)
+         return GL_TRUE;
+
+      if (depth->Type == GL_TEXTURE &&
+          depth->Texture == stencil->Texture)
+         return GL_TRUE;
+   }
+
+   return GL_FALSE;
+}
+
+
+/**
  * For debug only.
  */
 static void
@@ -1466,6 +1493,7 @@ renderbuffer_storage(GLenum target, GLenum internalFormat,
       "glRenderbufferStorage" : "glRenderbufferStorageMultisample";
    struct gl_renderbuffer *rb;
    GLenum baseFormat;
+   GLenum sample_count_error;
    GET_CURRENT_CONTEXT(ctx);
 
    if (MESA_VERBOSE & VERBOSE_API) {
@@ -1509,9 +1537,14 @@ renderbuffer_storage(GLenum target, GLenum internalFormat,
       /* NumSamples == 0 indicates non-multisampling */
       samples = 0;
    }
-   else if (samples > (GLsizei) ctx->Const.MaxSamples) {
-      /* note: driver may choose to use more samples than what's requested */
-      _mesa_error(ctx, GL_INVALID_VALUE, "%s(samples)", func);
+
+   /* check the sample count;
+    * note: driver may choose to use more samples than what's requested
+    */
+   sample_count_error = _mesa_check_sample_count(ctx, target,
+         internalFormat, samples);
+   if (sample_count_error != GL_NO_ERROR) {
+      _mesa_error(ctx, sample_count_error, "%s(samples)", func);
       return;
    }