diff options
Diffstat (limited to 'src/gallium')
| -rw-r--r-- | src/gallium/drivers/svga/svga_state_constants.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/gallium/drivers/svga/svga_state_constants.c b/src/gallium/drivers/svga/svga_state_constants.c index aee1adeee46..5ae0382cd45 100644 --- a/src/gallium/drivers/svga/svga_state_constants.c +++ b/src/gallium/drivers/svga/svga_state_constants.c @@ -554,6 +554,7 @@ emit_constbuf_vgpu10(struct svga_context *svga, unsigned shader) void *src_map = NULL, *dst_map; unsigned offset; const struct svga_shader_variant *variant; + unsigned alloc_buf_size; assert(shader == PIPE_SHADER_VERTEX || shader == PIPE_SHADER_GEOMETRY || @@ -618,7 +619,16 @@ emit_constbuf_vgpu10(struct svga_context *svga, unsigned shader) */ new_buf_size = align(new_buf_size, 16); - u_upload_alloc(svga->const0_upload, 0, new_buf_size, + /* Constant buffer size in the upload buffer must be in multiples of 256. + * In order to maximize the chance of merging the upload buffer chunks + * when svga_buffer_add_range() is called, + * the allocate buffer size needs to be in multiples of 256 as well. + * Otherwise, since there is gap between each dirty range of the upload buffer, + * each dirty range will end up in its own UPDATE_GB_IMAGE command. + */ + alloc_buf_size = align(new_buf_size, CONST0_UPLOAD_ALIGNMENT); + + u_upload_alloc(svga->const0_upload, 0, alloc_buf_size, CONST0_UPLOAD_ALIGNMENT, &offset, &dst_buffer, &dst_map); if (!dst_map) { |