mesa: use geometric helper for computing min samples

In case we have a draw buffer without attachments, we should be looking
at the default number of samples.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>

diff --git a/src/mesa/program/program.c b/src/mesa/program/program.c
index 0e78e6ab25de558247f8dd6ca7b9d0779e0c7cdc..27867c48d52319d68c340103ede13ef4da72a3d4 100644 (file)
--- a/src/mesa/program/program.c
+++ b/src/mesa/program/program.c
@@ -31,6 +31,7 @@
 
 #include "main/glheader.h"
 #include "main/context.h"
+#include "main/framebuffer.h"
 #include "main/hash.h"
 #include "main/macros.h"
 #include "program.h"
@@ -534,14 +535,14 @@ _mesa_get_min_invocations_per_fragment(struct gl_context *ctx,
        *  forces per-sample shading"
        */
       if (prog->IsSample && !ignore_sample_qualifier)
-         return MAX2(ctx->DrawBuffer->Visual.samples, 1);
+         return MAX2(_mesa_geometric_samples(ctx->DrawBuffer), 1);
 
       if (prog->Base.SystemValuesRead & (SYSTEM_BIT_SAMPLE_ID |
                                          SYSTEM_BIT_SAMPLE_POS))
-         return MAX2(ctx->DrawBuffer->Visual.samples, 1);
+         return MAX2(_mesa_geometric_samples(ctx->DrawBuffer), 1);
       else if (ctx->Multisample.SampleShading)
          return MAX2(ceil(ctx->Multisample.MinSampleShadingValue *
-                          ctx->DrawBuffer->Visual.samples), 1);
+                          _mesa_geometric_samples(ctx->DrawBuffer)), 1);
       else
          return 1;
    }