gallivm/draw: refactor vertex header jit type out

mesh shaders will want access to this as well so start moving it to
common code.

Reviewed-by: Brian Paul <brianp@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23065>

4 files changed, 57 insertions, 88 deletions

diff --git a/src/gallium/auxiliary/draw/draw_llvm.c b/src/gallium/auxiliary/draw/draw_llvm.c
index e754f407cd9..d395b23154d 100644
--- a/src/gallium/auxiliary/draw/draw_llvm.c
+++ b/src/gallium/auxiliary/draw/draw_llvm.c
@@ -274,54 +274,6 @@ create_jit_vertex_buffer_type(struct gallivm_state *gallivm,
 }
 
 
-/**
- * Create LLVM type for struct vertex_header;
- */
-static LLVMTypeRef
-create_jit_vertex_header(struct gallivm_state *gallivm, int data_elems)
-{
-   LLVMTargetDataRef target = gallivm->target;
-   LLVMTypeRef elem_types[3];
-   LLVMTypeRef vertex_header;
-   char struct_name[24];
-
-   snprintf(struct_name, 23, "vertex_header%d", data_elems);
-
-   elem_types[DRAW_JIT_VERTEX_VERTEX_ID]  = LLVMIntTypeInContext(gallivm->context, 32);
-   elem_types[DRAW_JIT_VERTEX_CLIP_POS]  = LLVMArrayType(LLVMFloatTypeInContext(gallivm->context), 4);
-   elem_types[DRAW_JIT_VERTEX_DATA]  = LLVMArrayType(elem_types[1], data_elems);
-
-   vertex_header = LLVMStructTypeInContext(gallivm->context, elem_types,
-                                           ARRAY_SIZE(elem_types), 0);
-
-   /* these are bit-fields and we can't take address of them
-      LP_CHECK_MEMBER_OFFSET(struct vertex_header, clipmask,
-      target, vertex_header,
-      DRAW_JIT_VERTEX_CLIPMASK);
-      LP_CHECK_MEMBER_OFFSET(struct vertex_header, edgeflag,
-      target, vertex_header,
-      DRAW_JIT_VERTEX_EDGEFLAG);
-      LP_CHECK_MEMBER_OFFSET(struct vertex_header, pad,
-      target, vertex_header,
-      DRAW_JIT_VERTEX_PAD);
-      LP_CHECK_MEMBER_OFFSET(struct vertex_header, vertex_id,
-      target, vertex_header,
-      DRAW_JIT_VERTEX_VERTEX_ID);
-   */
-   (void) target; /* silence unused var warning for non-debug build */
-   LP_CHECK_MEMBER_OFFSET(struct vertex_header, clip_pos,
-                          target, vertex_header,
-                          DRAW_JIT_VERTEX_CLIP_POS);
-   LP_CHECK_MEMBER_OFFSET(struct vertex_header, data,
-                          target, vertex_header,
-                          DRAW_JIT_VERTEX_DATA);
-
-   assert(LLVMABISizeOfType(target, vertex_header) ==
-          offsetof(struct vertex_header, data[data_elems]));
-
-   return vertex_header;
-}
-
 static LLVMTypeRef
 create_tcs_jit_input_type_deref(struct gallivm_state *gallivm)
 {
@@ -573,7 +525,7 @@ draw_llvm_create_variant(struct draw_llvm *llvm,
       draw_llvm_dump_variant_key(&variant->key);
    }
 
-   variant->vertex_header_type = create_jit_vertex_header(variant->gallivm, num_inputs);
+   variant->vertex_header_type = lp_build_create_jit_vertex_header_type(variant->gallivm, num_inputs);
    variant->vertex_header_ptr_type = LLVMPointerType(variant->vertex_header_type, 0);
 
    draw_llvm_generate(llvm, variant);
@@ -828,8 +780,8 @@ store_aos(struct gallivm_state *gallivm,
 {
    LLVMTypeRef data_ptr_type = LLVMPointerType(lp_build_vec_type(gallivm, lp_float32_vec4_type()), 0);
    LLVMBuilderRef builder = gallivm->builder;
-   LLVMValueRef data_ptr = draw_jit_header_data(gallivm, io_type, io_ptr);
-   LLVMTypeRef data_type = LLVMStructGetTypeAtIndex(io_type, DRAW_JIT_VERTEX_DATA);
+   LLVMValueRef data_ptr = lp_jit_vertex_header_data(gallivm, io_type, io_ptr);
+   LLVMTypeRef data_type = LLVMStructGetTypeAtIndex(io_type, LP_JIT_VERTEX_HEADER_DATA);
    LLVMValueRef indices[3];
 
    indices[0] = lp_build_const_int32(gallivm, 0);
@@ -952,7 +904,7 @@ store_aos_array(struct gallivm_state *gallivm,
       /* OR with the clipmask */
       cliptmp = LLVMBuildOr(builder, val, clipmask, "");
       for (unsigned i = 0; i < vector_length; i++) {
-         LLVMValueRef id_ptr = draw_jit_header_id(gallivm, io_type, io_ptrs[i]);
+         LLVMValueRef id_ptr = lp_jit_vertex_header_id(gallivm, io_type, io_ptrs[i]);
          val = LLVMBuildExtractElement(builder, cliptmp, linear_inds[i], "");
          val = adjust_mask(gallivm, val);
 #if DEBUG_STORE
@@ -1079,7 +1031,7 @@ store_clip(struct gallivm_state *gallivm,
    soa[3] = LLVMBuildLoad2(builder, single_type, outputs[idx][3], ""); /*w0 w1 .. wn*/
 
    for (int i = 0; i < vs_type.length; i++) {
-      clip_ptrs[i] = draw_jit_header_clip_pos(gallivm, io_type, io_ptrs[i]);
+      clip_ptrs[i] = lp_jit_vertex_header_clip_pos(gallivm, io_type, io_ptrs[i]);
    }
 
    lp_build_transpose_aos(gallivm, vs_type, soa, soa);
@@ -2639,7 +2591,7 @@ draw_gs_llvm_create_variant(struct draw_llvm *llvm,
 
    create_gs_jit_types(variant);
 
-   variant->vertex_header_type = create_jit_vertex_header(variant->gallivm, num_outputs);
+   variant->vertex_header_type = lp_build_create_jit_vertex_header_type(variant->gallivm, num_outputs);
    variant->vertex_header_ptr_type = LLVMPointerType(variant->vertex_header_type, 0);
 
    draw_gs_llvm_generate(llvm, variant);
@@ -3812,7 +3764,7 @@ draw_tes_llvm_create_variant(struct draw_llvm *llvm,
 
    create_tes_jit_types(variant);
 
-   variant->vertex_header_type = create_jit_vertex_header(variant->gallivm, num_outputs);
+   variant->vertex_header_type = lp_build_create_jit_vertex_header_type(variant->gallivm, num_outputs);
    variant->vertex_header_ptr_type = LLVMPointerType(variant->vertex_header_type, 0);
 
    if (gallivm_debug & (GALLIVM_DEBUG_TGSI | GALLIVM_DEBUG_IR)) {
diff --git a/src/gallium/auxiliary/draw/draw_llvm.h b/src/gallium/auxiliary/draw/draw_llvm.h
index 05d383c484d..ef00bdaea5f 100644
--- a/src/gallium/auxiliary/draw/draw_llvm.h
+++ b/src/gallium/auxiliary/draw/draw_llvm.h
@@ -49,12 +49,6 @@ struct llvm_geometry_shader;
 struct llvm_tess_ctrl_shader;
 struct llvm_tess_eval_shader;
 
-enum {
-   DRAW_JIT_VERTEX_VERTEX_ID = 0,
-   DRAW_JIT_VERTEX_CLIP_POS,
-   DRAW_JIT_VERTEX_DATA
-};
-
 /**
  * This structure is passed directly to the generated vertex shader.
  *
@@ -85,16 +79,6 @@ enum {
    lp_build_struct_get2(_variant->gallivm, _variant->context_type, _ptr, DRAW_JIT_CTX_VIEWPORT, "viewports")
 
 
-#define draw_jit_header_id(_gallivm, _type, _ptr)              \
-   lp_build_struct_get_ptr2(_gallivm, _type, _ptr, DRAW_JIT_VERTEX_VERTEX_ID, "id")
-
-#define draw_jit_header_clip_pos(_gallivm, _type, _ptr) \
-   lp_build_struct_get_ptr2(_gallivm, _type, _ptr, DRAW_JIT_VERTEX_CLIP_POS, "clip_pos")
-
-#define draw_jit_header_data(_gallivm, _type, _ptr)            \
-   lp_build_struct_get_ptr2(_gallivm, _type, _ptr, DRAW_JIT_VERTEX_DATA, "data")
-
-
 #define draw_jit_vbuffer_stride(_gallivm, _type, _ptr)         \
    lp_build_struct_get2(_gallivm, _type, _ptr, 0, "stride")
 
diff --git a/src/gallium/auxiliary/draw/draw_private.h b/src/gallium/auxiliary/draw/draw_private.h
index e69ae6f3d0c..93fc0d39715 100644
--- a/src/gallium/auxiliary/draw/draw_private.h
+++ b/src/gallium/auxiliary/draw/draw_private.h
@@ -46,14 +46,13 @@
 
 #include "tgsi/tgsi_scan.h"
 
+#include "draw_vertex_header.h"
+
 #ifdef DRAW_LLVM_AVAILABLE
 struct gallivm_state;
 #endif
 
 
-/** Sum of frustum planes and user-defined planes */
-#define DRAW_TOTAL_CLIP_PLANES (6 + PIPE_MAX_CLIP_PLANES)
-
 /**
  * The largest possible index of a vertex that can be fetched.
  */
@@ -111,20 +110,6 @@ struct draw_vertex_buffer {
    uint32_t size;
 };
 
-/**
- * Basic vertex info.  Used to represent vertices after VS (through GS, TESS,
- * etc.) to vbuf output.
- */
-struct vertex_header {
-   unsigned clipmask:DRAW_TOTAL_CLIP_PLANES;
-   unsigned edgeflag:1;
-   unsigned pad:1;
-   unsigned vertex_id:16;
-
-   float clip_pos[4];
-   float data[][4]; // the vertex attributes
-};
-
 /* NOTE: It should match vertex_id size above */
 #define UNDEFINED_VERTEX_ID 0xffff
 
diff --git a/src/gallium/auxiliary/draw/draw_vertex_header.h b/src/gallium/auxiliary/draw/draw_vertex_header.h
new file mode 100644
index 00000000000..da585710273
--- /dev/null
+++ b/src/gallium/auxiliary/draw/draw_vertex_header.h
@@ -0,0 +1,48 @@
+/**************************************************************************
+ *
+ * Copyright 2007 VMware, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#ifndef DRAW_VERTEX_HEADER_H
+#define DRAW_VERTEX_HEADER_H
+
+/** Sum of frustum planes and user-defined planes */
+#define DRAW_TOTAL_CLIP_PLANES (6 + PIPE_MAX_CLIP_PLANES)
+
+/**
+ * Basic vertex info.  Used to represent vertices after VS (through GS, TESS,
+ * etc.) to vbuf output.
+ */
+struct vertex_header {
+   unsigned clipmask:DRAW_TOTAL_CLIP_PLANES;
+   unsigned edgeflag:1;
+   unsigned pad:1;
+   unsigned vertex_id:16;
+
+   float clip_pos[4];
+   float data[][4]; // the vertex attributes
+};
+
+#endif