1 files changed, 52 insertions, 15 deletions

diff --git a/src/mesa/tnl/t_draw.c b/src/mesa/tnl/t_draw.c
index e2aac64ad7..b1967e6541 100644
--- a/src/mesa/tnl/t_draw.c
+++ b/src/mesa/tnl/t_draw.c
@@ -125,6 +125,43 @@ convert_half_to_float(const struct gl_client_array *input,
    }
 }
 
+/**
+ * \brief Convert fixed-point to floating-point.
+ *
+ * In OpenGL, a fixed-point number is a "signed 2's complement 16.16 scaled
+ * integer" (Table 2.2 of the OpenGL ES 2.0 spec).
+ *
+ * If the buffer has the \c normalized flag set, the formula
+ *     \code normalize(x) := (2*x + 1) / (2^16 - 1) \endcode
+ * is used to map the fixed-point numbers into the range [-1, 1].
+ */
+static void
+convert_fixed_to_float(const struct gl_client_array *input,
+                       const GLubyte *ptr, GLfloat *fptr,
+                       GLuint count)
+{
+   GLuint i, j;
+   const GLint size = input->Size;
+
+   if (input->Normalized) {
+      for (i = 0; i < count; ++i) {
+         const GLfixed *in = (GLfixed *) ptr;
+         for (j = 0; j < size; ++j) {
+            *fptr++ = (GLfloat) (2 * in[j] + 1) / (GLfloat) ((1 << 16) - 1);
+         }
+         ptr += input->StrideB;
+      }
+   } else {
+      for (i = 0; i < count; ++i) {
+         const GLfixed *in = (GLfixed *) ptr;
+         for (j = 0; j < size; ++j) {
+            *fptr++ = in[j] / (GLfloat) (1 << 16);
+         }
+         ptr += input->StrideB;
+      }
+   }
+}
+
 /* Adjust pointer to point at first requested element, convert to
  * floating point, populate VB->AttribPtr[].
  */
@@ -175,14 +212,7 @@ static void _tnl_import_array( struct gl_context *ctx,
 	 convert_half_to_float(input, ptr, fptr, count, sz);
 	 break;
       case GL_FIXED:
-         {
-            GLuint i, j;
-            for (i = 0; i < count; i++) {
-               const GLint *in = (GLint *) (ptr + i * input->StrideB);
-               for (j = 0; j < sz; j++)
-                  *fptr++ = *in++ / 65536.0f;
-            }
-         }
+         convert_fixed_to_float(input, ptr, fptr, count);
          break;
       default:
 	 assert(0);
@@ -463,6 +493,7 @@ void _tnl_draw_prims( struct gl_context *ctx,
        */
       struct gl_buffer_object *bo[VERT_ATTRIB_MAX + 1];
       GLuint nr_bo = 0;
+      GLuint inst;
 
       for (i = 0; i < nr_prims;) {
 	 GLuint this_nr_prims;
@@ -477,18 +508,24 @@ void _tnl_draw_prims( struct gl_context *ctx,
 	       break;
 	 }
 
+         assert(prim[i].num_instances > 0);
+
 	 /* Binding inputs may imply mapping some vertex buffer objects.
 	  * They will need to be unmapped below.
 	  */
-	 bind_prims(ctx, &prim[i], this_nr_prims);
-	 bind_inputs(ctx, arrays, max_index + prim[i].basevertex + 1,
-		     bo, &nr_bo);
-	 bind_indices(ctx, ib, bo, &nr_bo);
+         for (inst = 0; inst < prim[i].num_instances; inst++) {
 
-	 TNL_CONTEXT(ctx)->Driver.RunPipeline(ctx);
+            bind_prims(ctx, &prim[i], this_nr_prims);
+            bind_inputs(ctx, arrays, max_index + prim[i].basevertex + 1,
+                        bo, &nr_bo);
+            bind_indices(ctx, ib, bo, &nr_bo);
 
-	 unmap_vbos(ctx, bo, nr_bo);
-	 free_space(ctx);
+            tnl->CurInstance = inst;
+            TNL_CONTEXT(ctx)->Driver.RunPipeline(ctx);
+
+            unmap_vbos(ctx, bo, nr_bo);
+            free_space(ctx);
+         }
 
 	 i += this_nr_prims;
       }