Mesa (master): panfrost: Handle !independent_blend for blend shaders

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Module: Mesa
Branch: master
Commit: f7cf5a30c747e83ef728142e472c341a01f19a70
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=f7cf5a30c747e83ef728142e472c341a01f19a70

Author: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Date:   Fri May 15 12:19:22 2020 -0400

panfrost: Handle !independent_blend for blend shaders

Fixes MRT blending.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5153>

---

 src/gallium/drivers/panfrost/pan_blend_shaders.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/gallium/drivers/panfrost/pan_blend_shaders.c b/src/gallium/drivers/panfrost/pan_blend_shaders.c
index a639e66c1cb..079080879a9 100644
--- a/src/gallium/drivers/panfrost/pan_blend_shaders.c
+++ b/src/gallium/drivers/panfrost/pan_blend_shaders.c
@@ -85,6 +85,9 @@ nir_make_options(const struct pipe_blend_state *blend, unsigned i)
 
         options.logicop_enable = false;
 
+        if (!blend->independent_blend_enable)
+                i = 0;
+
         /* If blend is disabled, we just use replace mode */
 
         nir_lower_blend_channel rgb = {