Mesa (master): st/mesa: Fix blitting from GL_DEPTH_STENCIL to GL_STENCIL_INDEX

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Module: Mesa
Branch: master
Commit: ce89c19b88376bcc4752494d78e4eb220cde6930
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=ce89c19b88376bcc4752494d78e4eb220cde6930

Author: Kenneth Graunke <kenneth at whitecape.org>
Date:   Mon Mar 11 15:03:13 2019 -0700

st/mesa: Fix blitting from GL_DEPTH_STENCIL to GL_STENCIL_INDEX

Fixes assertion failures in Piglit's "framebuffer-blit-levels
{draw,read} stencil" tests on iris.  Also fixes assert failures in
frameretrace, which tries to ReadPixels the stencil values (only)
from a Z24S8 depth/stencil attachment.

Reviewed-by: Kristian H. Kristensen <hoegsberg at chromium.org>

---

 src/mesa/state_tracker/st_cb_texture.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/mesa/state_tracker/st_cb_texture.c b/src/mesa/state_tracker/st_cb_texture.c
index 2caf61e8943..f489f8012f4 100644
--- a/src/mesa/state_tracker/st_cb_texture.c
+++ b/src/mesa/state_tracker/st_cb_texture.c
@@ -794,6 +794,7 @@ st_get_blit_mask(GLenum srcFormat, GLenum dstFormat)
 
    case GL_STENCIL_INDEX:
       switch (srcFormat) {
+      case GL_DEPTH_STENCIL:
       case GL_STENCIL_INDEX:
          return PIPE_MASK_S;
       default: