mesa/arb_gpu_shader_fp64: add support for glGetUniformdv

This was missed when I did fp64, I've sent a piglit test to cover
the case as well.

Reviewed-by: Timothy Arceri <t_arceri@yahoo.com.au>
Cc: "11.0" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
(cherry picked from commit 45971fd0df1cbfc400f89f2e8df206625b40d65f)

2 files changed, 14 insertions, 16 deletions

diff --git a/src/mesa/main/uniform_query.cpp b/src/mesa/main/uniform_query.cpp
index 988ec764137..10266189259 100644
--- a/src/mesa/main/uniform_query.cpp
+++ b/src/mesa/main/uniform_query.cpp
@@ -319,24 +319,31 @@ _mesa_get_uniform(struct gl_context *ctx, GLuint program, GLint location,
 
       return;
    }
+   if ((uni->type->base_type == GLSL_TYPE_DOUBLE &&
+        returnType != GLSL_TYPE_DOUBLE) ||
+       (uni->type->base_type != GLSL_TYPE_DOUBLE &&
+        returnType == GLSL_TYPE_DOUBLE)) {
+	 _mesa_error( ctx, GL_INVALID_OPERATION,
+	             "glGetnUniform*vARB(incompatible uniform types)");
+	return;
+   }
 
    {
       unsigned elements = (uni->type->is_sampler())
 	 ? 1 : uni->type->components();
+      const int dmul = uni->type->base_type == GLSL_TYPE_DOUBLE ? 2 : 1;
 
       /* Calculate the source base address *BEFORE* modifying elements to
        * account for the size of the user's buffer.
        */
       const union gl_constant_value *const src =
-	 &uni->storage[offset * elements];
+	 &uni->storage[offset * elements * dmul];
 
       assert(returnType == GLSL_TYPE_FLOAT || returnType == GLSL_TYPE_INT ||
-             returnType == GLSL_TYPE_UINT);
-      /* The three (currently) supported types all have the same size,
-       * which is of course the same as their union. That'll change
-       * with glGetUniformdv()...
-       */
-      unsigned bytes = sizeof(src[0]) * elements;
+             returnType == GLSL_TYPE_UINT || returnType == GLSL_TYPE_DOUBLE);
+
+      /* doubles have a different size than the other 3 types */
+      unsigned bytes = sizeof(src[0]) * elements * dmul;
       if (bufSize < 0 || bytes > (unsigned) bufSize) {
 	 _mesa_error( ctx, GL_INVALID_OPERATION,
 	             "glGetnUniform*vARB(out of bounds: bufSize is %d,"
diff --git a/src/mesa/main/uniforms.c b/src/mesa/main/uniforms.c
index ff1df72e1d6..10819e2e21a 100644
--- a/src/mesa/main/uniforms.c
+++ b/src/mesa/main/uniforms.c
@@ -888,16 +888,7 @@ _mesa_GetnUniformdvARB(GLuint program, GLint location,
 {
    GET_CURRENT_CONTEXT(ctx);
 
-   (void) program;
-   (void) location;
-   (void) bufSize;
-   (void) params;
-
-   /*
    _mesa_get_uniform(ctx, program, location, bufSize, GLSL_TYPE_DOUBLE, params);
-   */
-   _mesa_error(ctx, GL_INVALID_OPERATION, "glGetUniformdvARB"
-               "(GL_ARB_gpu_shader_fp64 not implemented)");
 }
 
 void GLAPIENTRY