[PATCH vkd3d 2/5] vkd3d-shader: Implement vCoverage shader register.

[Józef Kucia]

From: Józef Kucia

Signed-off-by: Józef Kucia 
---
 libs/vkd3d-shader/dxbc.c  |  1 +
 libs/vkd3d-shader/spirv.c | 13 ++++++++++---
 2 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/libs/vkd3d-shader/dxbc.c b/libs/vkd3d-shader/dxbc.c
index 2fd0cda7b308..0b5f7bc892f6 100644
--- a/libs/vkd3d-shader/dxbc.c
+++ b/libs/vkd3d-shader/dxbc.c
@@ -1566,6 +1566,7 @@ static bool shader_sm4_is_scalar_register(const struct vkd3d_shader_register *re
 {
     switch (reg->type)
     {
+        case VKD3DSPR_COVERAGE:
         case VKD3DSPR_DEPTHOUT:
         case VKD3DSPR_DEPTHOUTGE:
         case VKD3DSPR_DEPTHOUTLE:
diff --git a/libs/vkd3d-shader/spirv.c b/libs/vkd3d-shader/spirv.c
index d2c417f0da6e..ddcaead2a185 100644
--- a/libs/vkd3d-shader/spirv.c
+++ b/libs/vkd3d-shader/spirv.c
@@ -2302,6 +2302,9 @@ static bool vkd3d_dxbc_compiler_get_register_name(char *buffer, unsigned int buf
         case VKD3DSPR_IDXTEMP:
             snprintf(buffer, buffer_size, "x%u", idx);
             break;
+        case VKD3DSPR_COVERAGE:
+            snprintf(buffer, buffer_size, "vCoverage");
+            break;
         case VKD3DSPR_SAMPLEMASK:
             snprintf(buffer, buffer_size, "oMask");
             break;
@@ -2473,7 +2476,7 @@ static void vkd3d_dxbc_compiler_emit_dereference_register(struct vkd3d_dxbc_comp
     {
         indexes[index_count++] = vkd3d_dxbc_compiler_emit_register_addressing(compiler, &reg->idx[1]);
     }
-    else if (reg->type == VKD3DSPR_SAMPLEMASK)
+    else if (reg->type == VKD3DSPR_COVERAGE || reg->type == VKD3DSPR_SAMPLEMASK)
     {
         indexes[index_count++] = vkd3d_dxbc_compiler_get_constant_uint(compiler, register_info->member_idx);
     }
@@ -3116,6 +3119,7 @@ vkd3d_register_builtins[] =

{VKD3DSPR_TESSCOORD,        {VKD3D_TYPE_FLOAT, 3, SpvBuiltInTessCoord}},

+    {VKD3DSPR_COVERAGE,         {VKD3D_TYPE_UINT, 1, SpvBuiltInSampleMask, NULL, true}},
     {VKD3DSPR_SAMPLEMASK,       {VKD3D_TYPE_UINT, 1, SpvBuiltInSampleMask, NULL, true}},

{VKD3DSPR_DEPTHOUT,         {VKD3D_TYPE_FLOAT, 1, SpvBuiltInFragDepth}},
@@ -3437,6 +3441,7 @@ static void vkd3d_dxbc_compiler_emit_input_register(struct vkd3d_dxbc_compiler *
     const struct vkd3d_shader_register *reg = &dst->reg;
     const struct vkd3d_spirv_builtin *builtin;
     struct vkd3d_symbol reg_symbol;
+    unsigned int array_size;
     uint32_t input_id;

assert(!reg->idx[0].rel_addr);
@@ -3449,15 +3454,17 @@ static void vkd3d_dxbc_compiler_emit_input_register(struct vkd3d_dxbc_compiler *
         return;
     }

-    input_id = vkd3d_dxbc_compiler_emit_variable(compiler,
+    array_size = builtin->is_spirv_array ? 1 : 0;
+    input_id = vkd3d_dxbc_compiler_emit_array_variable(compiler,
             &builder->global_stream, SpvStorageClassInput,
-            builtin->component_type, builtin->component_count);
+            builtin->component_type, builtin->component_count, array_size);
     vkd3d_spirv_add_iface_variable(builder, input_id);
     vkd3d_dxbc_compiler_decorate_builtin(compiler, input_id, builtin->spirv_builtin);

vkd3d_symbol_make_register(&reg_symbol, reg);
     reg_symbol.id = input_id;
     reg_symbol.info.reg.storage_class = SpvStorageClassInput;
+    reg_symbol.info.reg.member_idx = 0;
     reg_symbol.info.reg.component_type = builtin->component_type;
     reg_symbol.info.reg.write_mask = vkd3d_write_mask_from_component_count(builtin->component_count);
     vkd3d_dxbc_compiler_put_symbol(compiler, &reg_symbol);