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st/mesa: Fix blitting from GL_DEPTH_STENCIL to GL_STENCIL_INDEX

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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@chromium.org>
This commit is contained in:
Kenneth Graunke 2019-03-11 15:03:13 -07:00
parent 107a8ec3b3
commit ce89c19b88
1 changed files with 1 additions and 0 deletions
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src/mesa/state_tracker/st_cb_texture.c
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@ -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: