Józef Kucia : libs/vkd3d-shader: Translate geometry shader "cut" instructions.

[Alexandre Julliard]

Module: vkd3d
Branch: master
Commit: f6c708a3cc34b248e06d05ea8525244da8e6fc06
URL:    https://source.winehq.org/git/vkd3d.git/?a=commit;h=f6c708a3cc34b248e06d05ea...

Author: Józef Kucia 
Date:   Sun Feb  4 23:58:23 2018 +0100

libs/vkd3d-shader: Translate geometry shader "cut" instructions.

Signed-off-by: Józef Kucia 
Signed-off-by: Henri Verbeet 
Signed-off-by: Alexandre Julliard

---

libs/vkd3d-shader/spirv.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/libs/vkd3d-shader/spirv.c b/libs/vkd3d-shader/spirv.c
index ca0beb8..ac638e9 100644
--- a/libs/vkd3d-shader/spirv.c
+++ b/libs/vkd3d-shader/spirv.c
@@ -1400,6 +1400,11 @@ static void vkd3d_spirv_build_op_emit_vertex(struct vkd3d_spirv_builder *builder
     return vkd3d_spirv_build_op(&builder->function_stream, SpvOpEmitVertex);
 }

+static void vkd3d_spirv_build_op_end_primitive(struct vkd3d_spirv_builder *builder)
+{
+    return vkd3d_spirv_build_op(&builder->function_stream, SpvOpEndPrimitive);
+}
+
 static void vkd3d_spirv_build_op_control_barrier(struct vkd3d_spirv_builder *builder,
         uint32_t execution_id, uint32_t memory_id, uint32_t memory_semantics_id)
 {
@@ -5458,6 +5463,26 @@ static void vkd3d_dxbc_compiler_emit_emit_stream(struct vkd3d_dxbc_compiler *com
     vkd3d_spirv_build_op_emit_vertex(builder);
 }

+static void vkd3d_dxbc_compiler_emit_cut_stream(struct vkd3d_dxbc_compiler *compiler,
+        const struct vkd3d_shader_instruction *instruction)
+{
+    struct vkd3d_spirv_builder *builder = &compiler->spirv_builder;
+    unsigned int stream_idx;
+
+    if (instruction->handler_idx == VKD3DSIH_CUT_STREAM)
+        stream_idx = instruction->src[0].reg.idx[0].offset;
+    else
+        stream_idx = 0;
+
+    if (stream_idx)
+    {
+        FIXME("Multiple streams are not supported yet.\n");
+        return;
+    }
+
+    vkd3d_spirv_build_op_end_primitive(builder);
+}
+
 /* This function is called after declarations are processed. */
 static void vkd3d_dxbc_compiler_emit_main_prolog(struct vkd3d_dxbc_compiler *compiler)
 {
@@ -5720,6 +5745,10 @@ void vkd3d_dxbc_compiler_handle_instruction(struct vkd3d_dxbc_compiler *compiler
         case VKD3DSIH_EMIT_STREAM:
             vkd3d_dxbc_compiler_emit_emit_stream(compiler, instruction);
             break;
+        case VKD3DSIH_CUT:
+        case VKD3DSIH_CUT_STREAM:
+            vkd3d_dxbc_compiler_emit_cut_stream(compiler, instruction);
+            break;
         case VKD3DSIH_NOP:
             break;
         default: