[PATCH vkd3d 08/11] vkd3d-shader: Add vkd3d_siv_from_sysval_indexed helper.

[Philip Rebohle]

Needed to accurately map tessellation factor semantics.

Signed-off-by: Philip Rebohle <philip.rebohle at tu-dortmund.de>
---
 libs/vkd3d-shader/spirv.c | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/libs/vkd3d-shader/spirv.c b/libs/vkd3d-shader/spirv.c
index af749c5..4dd25a5 100644
--- a/libs/vkd3d-shader/spirv.c
+++ b/libs/vkd3d-shader/spirv.c
@@ -129,7 +129,7 @@ static const void *vkd3d_find_struct_(const struct vkd3d_struct *chain,
     return NULL;
 }
 
-static enum vkd3d_shader_input_sysval_semantic vkd3d_siv_from_sysval(enum vkd3d_sysval_semantic sysval)
+static enum vkd3d_shader_input_sysval_semantic vkd3d_siv_from_sysval_indexed(enum vkd3d_sysval_semantic sysval, uint32_t index)
 {
     switch (sysval)
     {
@@ -137,12 +137,29 @@ static enum vkd3d_shader_input_sysval_semantic vkd3d_siv_from_sysval(enum vkd3d_
             return VKD3D_SIV_NONE;
         case VKD3D_SV_POSITION:
             return VKD3D_SIV_POSITION;
+        case VKD3D_SV_TESS_FACTOR_QUADEDGE:
+            return VKD3D_SIV_QUAD_U0_TESS_FACTOR + index;
+        case VKD3D_SV_TESS_FACTOR_QUADINT:
+            return VKD3D_SIV_QUAD_U_INNER_TESS_FACTOR + index;
+        case VKD3D_SV_TESS_FACTOR_TRIEDGE:
+            return VKD3D_SIV_TRIANGLE_U_TESS_FACTOR + index;
+        case VKD3D_SV_TESS_FACTOR_TRIINT:
+            return VKD3D_SIV_TRIANGLE_INNER_TESS_FACTOR;
+        case VKD3D_SV_TESS_FACTOR_LINEDET:
+            return VKD3D_SIV_LINE_DETAIL_TESS_FACTOR;
+        case VKD3D_SV_TESS_FACTOR_LINEDEN:
+            return VKD3D_SIV_LINE_DENSITY_TESS_FACTOR;
         default:
-            FIXME("Unhandled sysval %#x.\n", sysval);
+            FIXME("Unhandled sysval %#x, index %u.\n", sysval, index);
             return VKD3D_SIV_NONE;
     }
 }
 
+static enum vkd3d_shader_input_sysval_semantic vkd3d_siv_from_sysval(enum vkd3d_sysval_semantic sysval)
+{
+      return vkd3d_siv_from_sysval_indexed(sysval, 0);
+}
+
 #define VKD3D_SPIRV_VERSION 0x00010000
 #define VKD3D_SPIRV_GENERATOR_ID 18
 #define VKD3D_SPIRV_GENERATOR_VERSION 1
-- 
2.23.0