vc4: Add support for stencil operations.

While depth test state is passed through the fragment shader as sideband,
data, the stencil test state has to be set by the fragment shader itself.

Many tests are still failing, but this gets most of hiz/ passing.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/gallium/drivers/vc4/vc4_context.h b/src/gallium/drivers/vc4/vc4_context.h
index e5864333a68..549becdbf66 100644
--- a/src/gallium/drivers/vc4/vc4_context.h
+++ b/src/gallium/drivers/vc4/vc4_context.h
@@ -203,6 +203,14 @@ struct vc4_depth_stencil_alpha_state {
 
         /* VC4_CONFIGURATION_BITS */
         uint8_t config_bits[3];
+
+        /** Uniforms for stencil state.
+         *
+         * Index 0 is either the front config, or the front-and-back config.
+         * Index 1 is the back config if doing separate back stencil.
+         * Index 2 is the writemask config if it's not a common mask value.
+         */
+        uint32_t stencil_uniforms[3];
 };
 
 static inline struct vc4_context *