i965: use dri_bo_subdata in vertex upload to get pwrite used.

Otherwise, we would ping-pong objects to GTT and back as we did pwrite on
indices (flushed and mapped to GTT) and mapped for vertices (moved back to
CPU domain).

Fixes bug #17180.

diff --git a/src/mesa/drivers/dri/i965/brw_draw_upload.c b/src/mesa/drivers/dri/i965/brw_draw_upload.c
index 9427131..0122d18 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_draw_upload.c
+++ b/src/mesa/drivers/dri/i965/brw_draw_upload.c
@@ -217,25 +217,6 @@ static GLuint get_index_type(GLenum type)
    }
 }
 
-static void copy_strided_array( GLubyte *dest, 
-                               const GLubyte *src, 
-                               GLuint size, 
-                               GLuint stride,
-                               GLuint count )
-{
-   if (size == stride) 
-      memcpy(dest, src, count * size);
-   else {
-      GLuint i;
-   
-      for (i = 0; i < count; i++) {
-        memcpy(dest, src, size);
-        src += stride;
-        dest += size;
-      }
-   }
-}
-
 static void wrap_buffers( struct brw_context *brw,
                          GLuint size )
 {
@@ -293,13 +274,31 @@ copy_array_to_vbo_array( struct brw_context *brw,
       element->stride = dst_stride;
    }
 
-   dri_bo_map(element->bo, GL_TRUE);
-   copy_strided_array((unsigned char *)element->bo->virtual + element->offset,
-                      element->glarray->Ptr,
-                      dst_stride,
-                      element->glarray->StrideB,
-                      element->count);
-   dri_bo_unmap(element->bo);
+   if (dst_stride == element->glarray->StrideB) {
+      dri_bo_subdata(element->bo,
+                    element->offset,
+                    size,
+                    element->glarray->Ptr);
+   } else {
+      void *data;
+      char *dest;
+      const char *src = element->glarray->Ptr;
+      int i;
+
+      data = _mesa_malloc(dst_stride * element->count);
+      dest = data;
+      for (i = 0; i < element->count; i++) {
+        memcpy(dest, src, dst_stride);
+        src += element->glarray->StrideB;
+        dest += dst_stride;
+      }
+
+      dri_bo_subdata(element->bo,
+                    element->offset,
+                    size,
+                    data);
+      _mesa_free(data);
+   }
 }
 
 static void brw_prepare_vertices(struct brw_context *brw)