main: Support getting GL_PROGRAM_BINARY_LENGTH

V2: call generic _mesa_get_program_binary_length() helper
    rather than driver function directly to allow greater
    code sharing.

Signed-off-by: Timothy Arceri <tarceri@itsqueeze.com>
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com> (v1)
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>i (v1)
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>

diff --git a/src/mesa/main/shaderapi.c b/src/mesa/main/shaderapi.c
index 7282435..82a7fde 100644 (file)
--- a/src/mesa/main/shaderapi.c
+++ b/src/mesa/main/shaderapi.c
@@ -45,6 +45,7 @@
 #include "main/hash.h"
 #include "main/mtypes.h"
 #include "main/pipelineobj.h"
+#include "main/program_binary.h"
 #include "main/shaderapi.h"
 #include "main/shaderobj.h"
 #include "main/transformfeedback.h"
@@ -834,7 +835,11 @@ get_programiv(struct gl_context *ctx, GLuint program, GLenum pname,
       *params = shProg->BinaryRetreivableHint;
       return;
    case GL_PROGRAM_BINARY_LENGTH:
-      *params = 0;
+      if (ctx->Const.NumProgramBinaryFormats == 0) {
+         *params = 0;
+      } else {
+         _mesa_get_program_binary_length(ctx, shProg, params);
+      }
       return;
    case GL_ACTIVE_ATOMIC_COUNTER_BUFFERS:
       if (!ctx->Extensions.ARB_shader_atomic_counters)