gallivm/llvmpipe: simplify front/back stencil ref value handling

Instead of passing an array, just pass two scalar values.

4 files changed, 23 insertions, 14 deletions

diff --git a/src/gallium/drivers/llvmpipe/lp_jit.c b/src/gallium/drivers/llvmpipe/lp_jit.c
index 1eee9212e6f..927e472ff26 100644
--- a/src/gallium/drivers/llvmpipe/lp_jit.c
+++ b/src/gallium/drivers/llvmpipe/lp_jit.c
@@ -96,7 +96,8 @@ lp_jit_init_globals(struct llvmpipe_screen *screen)
 
       elem_types[LP_JIT_CTX_CONSTANTS] = LLVMPointerType(LLVMFloatType(), 0);
       elem_types[LP_JIT_CTX_ALPHA_REF] = LLVMFloatType();
-      elem_types[LP_JIT_CTX_STENCIL_REF] = LLVMArrayType(LLVMInt8Type(), 2);
+      elem_types[LP_JIT_CTX_STENCIL_REF_FRONT] = LLVMInt32Type();
+      elem_types[LP_JIT_CTX_STENCIL_REF_BACK] = LLVMInt32Type();
       elem_types[LP_JIT_CTX_SCISSOR_XMIN] = LLVMFloatType();
       elem_types[LP_JIT_CTX_SCISSOR_YMIN] = LLVMFloatType();
       elem_types[LP_JIT_CTX_SCISSOR_XMAX] = LLVMFloatType();
@@ -113,9 +114,12 @@ lp_jit_init_globals(struct llvmpipe_screen *screen)
       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, alpha_ref_value,
                              screen->target, context_type,
                              LP_JIT_CTX_ALPHA_REF);
-      LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, stencil_ref,
+      LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, stencil_ref_front,
                              screen->target, context_type,
-                             LP_JIT_CTX_STENCIL_REF);
+                             LP_JIT_CTX_STENCIL_REF_FRONT);
+      LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, stencil_ref_back,
+                             screen->target, context_type,
+                             LP_JIT_CTX_STENCIL_REF_BACK);
       LP_CHECK_MEMBER_OFFSET(struct lp_jit_context, scissor_xmin,
                              screen->target, context_type,
                              LP_JIT_CTX_SCISSOR_XMIN);
diff --git a/src/gallium/drivers/llvmpipe/lp_jit.h b/src/gallium/drivers/llvmpipe/lp_jit.h
index 63e05c5d5e1..bbd0c9610de 100644
--- a/src/gallium/drivers/llvmpipe/lp_jit.h
+++ b/src/gallium/drivers/llvmpipe/lp_jit.h
@@ -84,7 +84,7 @@ struct lp_jit_context
 
    float alpha_ref_value;
 
-   uint8_t stencil_ref[2];
+   uint32_t stencil_ref_front, stencil_ref_back;
 
    /** floats, not ints */
    float scissor_xmin, scissor_ymin, scissor_xmax, scissor_ymax;
@@ -103,7 +103,8 @@ struct lp_jit_context
 enum {
    LP_JIT_CTX_CONSTANTS = 0,
    LP_JIT_CTX_ALPHA_REF,
-   LP_JIT_CTX_STENCIL_REF,
+   LP_JIT_CTX_STENCIL_REF_FRONT,
+   LP_JIT_CTX_STENCIL_REF_BACK,
    LP_JIT_CTX_SCISSOR_XMIN,
    LP_JIT_CTX_SCISSOR_YMIN,
    LP_JIT_CTX_SCISSOR_XMAX,
@@ -120,8 +121,11 @@ enum {
 #define lp_jit_context_alpha_ref_value(_builder, _ptr) \
    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_ALPHA_REF, "alpha_ref_value")
 
-#define lp_jit_context_stencil_ref_values(_builder, _ptr) \
-   lp_build_struct_get_ptr(_builder, _ptr, LP_JIT_CTX_STENCIL_REF, "stencil_ref")
+#define lp_jit_context_stencil_ref_front_value(_builder, _ptr) \
+   lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_STENCIL_REF_FRONT, "stencil_ref_front")
+
+#define lp_jit_context_stencil_ref_back_value(_builder, _ptr) \
+   lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_STENCIL_REF_BACK, "stencil_ref_back")
 
 #define lp_jit_context_scissor_xmin_value(_builder, _ptr) \
    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_SCISSOR_XMIN, "scissor_xmin")
diff --git a/src/gallium/drivers/llvmpipe/lp_setup.c b/src/gallium/drivers/llvmpipe/lp_setup.c
index bcc9d1fc1a4..fbb0d6f8a60 100644
--- a/src/gallium/drivers/llvmpipe/lp_setup.c
+++ b/src/gallium/drivers/llvmpipe/lp_setup.c
@@ -407,10 +407,10 @@ lp_setup_set_stencil_ref_values( struct lp_setup_context *setup,
 {
    LP_DBG(DEBUG_SETUP, "%s %d %d\n", __FUNCTION__, refs[0], refs[1]);
 
-   if (setup->fs.current.jit_context.stencil_ref[0] != refs[0] ||
-       setup->fs.current.jit_context.stencil_ref[1] != refs[1]) {
-      setup->fs.current.jit_context.stencil_ref[0] = refs[0];
-      setup->fs.current.jit_context.stencil_ref[1] = refs[1];
+   if (setup->fs.current.jit_context.stencil_ref_front != refs[0] ||
+       setup->fs.current.jit_context.stencil_ref_back != refs[1]) {
+      setup->fs.current.jit_context.stencil_ref_front = refs[0];
+      setup->fs.current.jit_context.stencil_ref_back = refs[1];
       setup->dirty |= LP_SETUP_NEW_FS;
    }
 }
diff --git a/src/gallium/drivers/llvmpipe/lp_state_fs.c b/src/gallium/drivers/llvmpipe/lp_state_fs.c
index 921c51fbe84..0f96654a673 100644
--- a/src/gallium/drivers/llvmpipe/lp_state_fs.c
+++ b/src/gallium/drivers/llvmpipe/lp_state_fs.c
@@ -145,7 +145,7 @@ generate_depth_stencil(LLVMBuilderRef builder,
                        const struct lp_fragment_shader_variant_key *key,
                        struct lp_type src_type,
                        struct lp_build_mask_context *mask,
-                       LLVMValueRef stencil_refs,
+                       LLVMValueRef stencil_refs[2],
                        LLVMValueRef src,
                        LLVMValueRef dst_ptr)
 {
@@ -408,7 +408,7 @@ generate_fs(struct llvmpipe_context *lp,
    LLVMValueRef consts_ptr;
    LLVMValueRef outputs[PIPE_MAX_SHADER_OUTPUTS][NUM_CHANNELS];
    LLVMValueRef z = interp->pos[2];
-   LLVMValueRef stencil_refs;
+   LLVMValueRef stencil_refs[2];
    struct lp_build_flow_context *flow;
    struct lp_build_mask_context mask;
    boolean early_depth_stencil_test;
@@ -418,7 +418,8 @@ generate_fs(struct llvmpipe_context *lp,
 
    assert(i < 4);
 
-   stencil_refs = lp_jit_context_stencil_ref_values(builder, context_ptr);
+   stencil_refs[0] = lp_jit_context_stencil_ref_front_value(builder, context_ptr);
+   stencil_refs[1] = lp_jit_context_stencil_ref_back_value(builder, context_ptr);
 
    elem_type = lp_build_elem_type(type);
    vec_type = lp_build_vec_type(type);